1 - 4 pm 151A-C
Plant Disease Management
Discussion: Chitin and Chitinase in Soil

Sponsor(s): APS Soil Microbiology and Root Diseases Committee. Presiding: M.L. Smither-Kopperl, Entomos LLC, Gainesville FL, and L.E. Hanson, USDA ARS, Ft. Collins CO

1:00 Introduction. M.L. SMITHER-KOPPERL. Entomos LLC, Gainesville FL

1:05 Chitin as biomass, its origin and role in nutrient cycling. M.L. SMITHER-KOPPERL. Entomos LLC, Gainesville FL

1:35 A molecular approach to analysis of a chitinolytic community. M. KRSEK, University of Warwick, Coventry UK

2:05 Break

2:15 Chitin amendments for suppression of plant parasitic nematodes and fungal pathogens. N. KOKALIS-BURELLE. USDA ARS, Fort Pierce FL

2:45 Role of the endochitinase Ech42 in parasitism by Trichoderma and factors determining its expression. A. Herrera-Estrella. Unidad Irapuato, Irapuato, Gto., México

3:15 Discussion: Significance for disease managment

1 - 4 pm 150DEF
APS 2nd I.E. Melhus Graduate Student Symposium
New Frontiers in Plant Disease Losses and Disease Management

Sponsor(s): APS Foundation and APS Plant Disease Losses Committee. Presiding: F.W. Nutter, Jr., Iowa State University, Ames

1:00 Introduction. F.W. NUTTER JR. Iowa State University, Ames

1:05 Opening remarks. S. COAKLEY (APS Foundation). Oregon State University, Corvallis

1:10 Harpin-induced resistance for the control of blue mold of apples. G. de CAPDEVILLE (1), S.V. Beer (1), C.B. Watkins (1), C.L. Wilson (2), and J.R. Aist (1). (1) Cornell University, Ithaca NY, and (2) USDA ARS, Kearneysville WV

1:40 Assessing the risk of Stewart’s disease of corn through improved knowledge of the role of the corn flea beetle vector. P.D. ESKER and F.W. Nutter, Jr. Iowa State University, Ames

2:10 Ontogenic resistance and plant disease management: A case study of grape powdery mildew. A. FICKE. Cornell University, Geneva NY

2:40 Management of grape black rot based on disease epidemiology and fungicide activity. L.E. HOFFMAN. Cornell University, Geneva NY

3:10 The spatiotemporal genetic structure of Phytophthora capsici in Michigan and implications for disease management. K.H. LAMOUR and M.K. Hausbeck. Michigan State University, East Lansing

1 - 4 pm 151DE
Professionalism/Outreach/Service
Discussion: Business Opportunities in Private Practice

Sponsor(s): APS Private Practice Committee. Presiding: J. Whaley, Whaley & Associates, Fresno CA

1:00 Introduction: The development of private practice in plant pathology. J.W. WHALEY. Whaley & Associates, Fresno CA

1:15 "Plant Doctor" careers. H.C. MELLINGER. Glades Crop Care, Jupiter FL

1:45 Crop loss consulting. W.T. COBB. Cobb Consulting Services, Kennewick WA

2:15 Contract research. A. R. CHASE. Chase Research Gardens, Inc., Mount Aukum CA

2:45 Information technology. L.J. STOWELL. PACE/PTRI, San Diego CA

3:15 Open discussion

1 - 4:15 pm 250E
APS Oral Presentations
Biology of Plant Pathogens: Viruses I

Presiding: R. Lee and B. Falk

1:00 Properties of a begomovirus isolated from sweet potato infected with sweetpotato leaf curl virus. P. Lotrakul, R. A. VALVERDE, and C. A. Clark. Louisiana State University, Baton Rouge

1:15 Localization of the capsid protein (CP) and minor CP of Citrus tristeza virus in relation to the genomic RNA. F.M. OCHOA (1), V.J. Febres (2), C.N. Niblett (2) and R.F.Lee (1). (1) University of Florida, Lake Alfred, and (2) University of Florida, Gainesville

1:30 Is aphid transmission of Citrus tristeza virus a genetic bottleneck? H.M. SHETA (1), L. Rubio (2), E. Grafton-Cardwell (3), M. Polek (4), D.J. Gumpf (3), B.W. Falk (5), and D.E. Ullman (1). (1) University of California, Davis; (2) IVIA, Valencia, Spain; (3) University of California, Riverside; (4) CCTEA, CDFA; and (5) University of California, Davis

1:45 Natural field infection of sweet orange by Citrus tristeza virus in south Florida. C.A. POWELL, P.A. Rundell, and R.R. Pelosi. University of Florida, Fort Pierce

2:00 First detection of Rupestris stem pitting associated virus particles in grapevine using the antibody to the recombinant coat protein. N. PETROVIC (1), B. Meng (2), M. Ravnikar (1), I. Mavric (1), and D. Gonsalves (2). (1) National Institute of Biology, Ljubljana, Slovenia, and (2) Cornell University, Geneva NY

2:15 Characterisation of a novel mite-transmitted virus associated with pigeonpea sterility mosaic disease. P.L. KUMAR (1), A.T. Jones (2), G.H. Duncan (2), I.M. Roberts (2), and D.V.R. Reddy (1). (1) International Crops Research Institute of Semi-Arid Tropics, Patancheru, India, and (2) Scottish Crop Research Institute, Invergowrie, Dundee, UK

2:30 Tobacco mild green mosaic virus induces a lethal hypersensitive response in tropical soda apple (Solanum viarum Dunal). M.S. Pettersen (1), R. CHARUDATTAN (2), E. Hiebert (3) and F.W. Zettler (4). University of Florida, Gainesville

2:45 Molecular characterization and comparison of the 3¢-terminal region of two Canadian isolates of plum pox virus. D. JAMES (1) and C. Upton (2). (1) Canadian Food Inspection Agency, Sidney, BC, and (2) University of Victoria, Victoria, BC, Canada

3:00 Break

3:15 Use of GFP-tagged begomoviruses to investigate virus-host interactions. H. JIANG (1), M.R. Sudarshana (1), Y.-M. Hou (2), and R.L. Gilbertson (1). (1) University of California, Davis, and (2) Torrey Mesa Research Institute, San Diego CA

3:30 Genetic diversity in the coat protein genes of soybean dwarf virus isolates collected in Japan. A. ALI, S. Kanematsu, H. Terauchi, K. Honda and K. Ishiguro. Tohoku National Agric. Exp. Stn., Shimo-kuriyagawa, Morioka, Japan

3:45 Resistance to red clover necrotic mosaic virus mediated by post-transcriptional gene silencing. Z. WENG and Z. Xiong. University of Arizona, Tucson

4:00 Replicase proteins of Panicum mosaic virus. J.S. BATTEN, S. Faure, and K-B.G. Scholthof. Texas A&M University, College Station

1 - 4:15 pm Ballroom B
SON Symposium
Evolution of Parasitism in Nematoda

Sponsor(s): SON. Presiding: P.S. Grewal, Ohio State University, Wooster

1:00 Introduction. P.S. GREWAL. Ohio State University, Wooster

1:05 An overview of evolution of parasitism in nematodes. M.R. SIDDIQI. IACR, Rothamsted, UK

1:30 Trends in the evolution of insect parasitism by nematodes. G.O. POINAR Jr.. Oregon State University, Corvallis

1:55 Evolution of insect parasitism in mermithids. E.G. PLATZER. University of California, Riverside

2:20 Evolution of insect parasitism in rhabditid and diplogastrid nematodes. W. SUDHAUS. Institute fuer Zoologie, Berlin, Germany

2:45 Break

2:55 Evolution of host search strategies in entompathogenic nematodes. J.F. CAMPBELL. USDA ARS, Manhattan KS

3:15 Evolution of plant parasitism in nematodes. T.O. POWERS (1), B.J. Adams (2), P.G. Mullin (1), and A.L. Szalanski (1). (1) University of Nebraska, Lincoln, and (2) University of Forida, Gainesville

3:35 Evolution of parasitism in insect-transmitted plant nematodes. R.M. GIBLIN DAVIS (1), K.A. Davies (2), K. Morris (3), and W.K. Thomas (3). (1) University of Florida, Davis; (2) Adelaide University, South Australia; and (3) University of Missouri, Kansas City

3:55 Evolution of mollusk parasitism in nematodes. P.S. GREWAL, S.K. Grewal, and L. Tan. Ohio State University, Wooster

1 - 4:15 pm Ballroom A
Professionalism/Outreach/Service
Presenting Biotechnology to the Public

Sponsor(s): APS Biotechnology Impact Assessment Committee. Presiding: R.R. Martin, USDA ARS, Corvallis OR

1:00 Introduction: Why should plant pathologists be involved in the biotech debate. R.R. MARTIN. USDA ARS, Corvallis

1:05 Impact of plant diseases on food and fiber production. G.L. SCHUMANN. University of Massachusetts, Amherst

1:30 Application of biotechnology to plant disease control. J.L. NORELLI. USDA ARS, Kearneysville WV

2:00 Public perception and concerns about biotechnology. T.L. LOMAX. Oregon State University, Corvallis

2:30 Break

2:45 How to present biotechnology to the public. P.G. LEMAUX. University of California, Berkeley

3:15 Food safety issues related to Bt corn and other GMO crops. G.P. MUNKVOLD. Iowa State University, Ames

3:45 Environmental issues surrounding biotechnology. P.C. JEPSON. Oregon State University, Corvallis

1 - 5:00 pm 250C
APS Oral Presentations
Epidemiology/Ecology/Environmental Plant Pathology I

Presiding: P. Gay and S. Thomson

1:00 Environmental factors affecting germination and sporulation of Colletotrichum acutatum on symptomless strawberry leaves. L.F.S. LEANDRO, M.L. Gleason, S.N. Wegulo, and F.W. Nutter, Jr. Iowa State University, Ames

1:15 Species diversity and genetic variation among Fusarium isolated from prairie grasses. J.F. LESLIE (1), K.A. Zeller (1), A. Logrieco (2) and A. Moretti (2). (1) Kansas State University, Manhattan, and (2) Istituto Tossine e Micotossine da Parassiti Vegetali, Bari, Italy

1:30 Characterization of Phytophthora infestans in western Washington during 2000. D.A. INGLIS and M.L. Derie. Washington State University, Mount Vernon

1:45 Effects of the tobacco downy mildew pathogen, Peronospora tabacina, on seed germination in Nicotiana repanda. E.P. HEIST, W.C. Nesmith and C.L. Schardl. University of Kentucky, Lexington

2:00 Temporal variation in population dynamics of Sclerotinia homoeocarpa. T. HSIANG and X. Ma. University of Guelph, Guelph, ON, Canada

2:15 Biological interactions during secondary infection of blueberry by Monilinia vaccinii-corymbosi. H.K. NGUGI (1), H. Scherm (1), J.S. Lehman (2). (1) University of Georgia, Athens, and (2) Otterbein College, Westerville, OH

2:30 Measuring patchiness in diseases caused by Phomopsis viticola and P. vaccinii using the information fractal dimension. J. ROGERS, A.M.C. Schilder, and A.M. Jarosz. Michigan State University, East Lansing

2:45 Effect of leaf wetness frequency and duration on the seasonal rate of Venturia inaequalis ascospore depletion. V. PHILION (1) and O. Carisse (2). (1) IRDA, St.-Hyacinthe, QC, Canada, and (2) CRDH, St.-Jean, QC, Canada

3:00 Break

3:15 Sequencing of two pathogens of the invasive weed Chromolaena odorata in South Africa. A. DEN BREEYEN. ARC-PPRI, Stellenbosch, South Africa

3:30 The dynamics of Tomato spotted wilt virus replication in the alimentary canal tissues of a thrips vector. F.M. ASSIS FILHO, R. Naidu, C.M. Deom, and J.L. Sherwood. University of Georgia, Athens

3:45 Spatial and temporal attributes of Erwinia amylovora on apple and pear leaves following natural inoculation. S.C. OCKEY and S.V. Thomson. Utah State University, Logan

4:00 Quantifying escape of Phytophthora infestans sporangia from a potato canopy. D.E. AYLOR (1), W.E. Fry (2), and H. Mayton (2). (1) Connecticut Agricultural Experiment Station, New Haven, and (2) Cornell University, Ithaca NY

4:15 Water transfer by rain splash in a canopy and a few consequences for splash-dispersed spores. S. SAINT-JEAN (1,2), L. Huber (2), M. Chelle (2), and L.V. Madden (1). (1) Ohio State University, Wooster, and (2) INRA-EGC, Thiverval-Grignon, France

4:30 Mid-term prediction of regional prevalence of soybean Sclerotinia stem rot. A.L. MILA, A.L. Carriquiry, and X.B. Yang. Iowa State University, Ames

4:45 Relationship between weather patterns and prevalence of sorghum ergot in the Texas Panhandle. F. WORKNEH and C. M. Rush. Texas Agricultural Experiment Station, Bushland

1 - 5 pm 250F
SON Oral Presentations
Management I

Presiding: R. Ingham and S. Schneider

1:00 A revised classification scheme for genetically diverse populations of Heterodera glycines. T.L. NIBLACK (1), R D. Riggs (2), P.R. Arelli (1), G.R. Noel (3), C.H. Opperman (4), J.H. Orf (5), D.P. Schmitt (6), J. G. Shannon (1), G. L. Tylka (7). (1) University of Missouri, Columbia; (2) University of Arkansas, Fayetteville; (3) USDA ARS, Urbana; (4) North Carolina State University, Raleigh; (5) University of Minnesota, St. Paul; (6) University of Hawaii, Honolulu; and (7) Iowa State University, Ames

1:15 Identification of genes for resistance to pathogens in non-host plants. A.H. ELLINGBOE. University of Wisconsin, Madison

1:30 Crop production systems for nonchemical control of Rotylenchulus reniformis. R.E. Edgar (1), C.F. WEAVER (2), R. Rodriguez-Kabana (2), C.R. Taylor (2), and D.G. Robertson (2). (1) Edgar Farm, Deatsville AL, and (2) Auburn University, Auburn AL

1:45 Impact of green manure crops on sustainable management of sugar beet cyst nematode. S.L. HAFEZ and P. Sundararaj. University of Idaho, Parma

2:00 Utilization of various cropping sequences for control of soybean nematodes. P.S. KING and R. Rodriguez-Kabana. Auburn University, Auburn AL

2:15 Depth distribution of Rotylenchulus reniformis under different tillage systems and crops. A. WESTPHAL (1), and J. Smart (2). (1) Texas Agricultural Extension Service, Weslaco, and (2) USDA ARS, Weslaco TX

2:30 Efficacy of oil seed meals for management of Heterodera schachtii and Meloidogyne chitwoodi under greenhouse conditions. S.L. Hafez and P. SUNDARARAJ. University of Idaho, Parma

2:45 Alternatives to methyl bromide for vineyard replant and grapevine nurseries. S.M. SCHNEIDER (1), H. Ajwa (1), T. Trout (1), and J. Sims (2). (1) USDA ARS, Fresno, CA, and (2) University of California, Riverside

3:00 Break

3:15 Biofumigation and soil heating to control Meloidogyne incognita and M. javanica. A.T. PLOEG. University of California, Riverside

3:30 Effect of entomopathogenic nematodes on root penetration and egg production of Meloidogyne incognita on tomato seedlings. E.E. PEREZ and E.E. Lewis. Virginia Polytechnic Institute and State University, Blacksburg

3:45 Reduction of root-knot nematode, M. javanica, in soil treated with ozone. J.J. QIU (1), B.B. Westerdahl (1), A. Pryor (2), and C.E. Anderson (1). (1) University of California, Davis, and (2) SoilZone, Inc., Davis, CA

4:00 Influence of Ethoprop, Fenamiphos, Carbofuran, and Oxamyl on Heterodera avenae populations and yield of wheat. S.M. Al-REHIAYANI. King Saud University, Al-Qassim Branch, Saudi Arabia

4:15 Telone II for the management of the reniform nematode in cotton during 1999-2000 in northern Louisiana and southern Mississippi. C. OVERSTREET (1), E.C. McGawley (1), and G.W. Lawrence (2). (1) Louisian State University, Baton Rouge, and (2) Mississippi State University, Mississippi State

4:30 Control of soilborne diseases in potato with shanked-in metam sodium. R. E. INGHAM and P.B. Hamm. Oregon State University, Corvallis

4:45 Effect of sub-lethal doses of systemic nematicides on root-knot nematode on tomato. A.A. KHAN. Aligarh Muslim University, Aligarh, UP, India

1:30 - 5 pm 150AB
Joint APS/MSA-Biology of Pathogens
What is a Fungal Species?

Sponsor(s): MSA, APS Mycology and Genetics Committees. Presiding: S. Goodwin, USDA ARS, West Lafayette IN, and T. Peever, Washington State University, Pullman

1:30 Introduction: What is a fungal species? S. GOODWIN. USDA ARS, West Lafayette IN

1:35 Lineages, phenotype and the practical species. T.C. HARRINGTON. Iowa State University, Ames

2:05 Species, concepts and classification of asexual fungi. J.W. TAYLOR. University of California, Berkeley

2:35 Break

2:50 Regulatory issues-Why species identification is important. M. PALM. USDA, Beltsville MD

3:20 Application of the phylogenetic species concept in Fusarium. K. O’DONNELL and T. Ward. USDA ARS, Peoria IL

3:50 Defining species boundaries in the smut fungi. L.M. CARRIS and L.A. Castlebury (2). (1) Washington State University, Pullman, and (2) USDA ARS, Beltsville MD

4:20 Defining species boundaries with gene flow analysis. S.B. GOODWIN. USDA ARS, Purdue University, West Lafayette IN

4:50 Concluding remarks. T. PEEVER. Washington State University, Pullman

2 - 4:45 pm Ballrooms E-H
Cell Biology of Fungi

Sponsor(s): MSA. Presiding: R. Roberson, Arizona State University, Tempe

2:00 Introduction. R. ROBERSON. Arizona State University, Tempe

2:05 Regulation of sepatation in Aspergillus nidulans. B. LIU and Y.R.J. Lee. University of California, Davis

2:35 Trends in imaging fungal pathogens for cell biological studies of plant disease. R. J. HOWARD (1), T.M. Bourett (2), K.E. Duncan (1), J.A. Sweigard (1) and K.J. Czymmek (2). (1) Dupont Crop Genetics, Wilmington DE, and (2) University of Delaware, Newark

3:05 How mitotic spindles form in Aspergillus. B.R. OAKLEY. Ohio State University, Columbus, OH

3:35 Nanobiotechnology: Applications and opportunities for cell biology. H. C. HOCH. Cornell University, Geneva NY

4:05 Integrating cytoskeleton function in the insect-pathogenic zygomycete, Entomophaga aulicae. F. MURRIN. Memorial University of Newfoundland, St. John’s, NF, Canada

2:15 - 5 pm 250B
MSA Contributed Presentations
Ecology and Population Biology

Presiding: U.L. Rosewich, University of Minnesota, St. Paul

2:15 Longitudinal and temporal distribution of freshwater ascomycetes and dematiaceous hyphomycetes in the Lam Tsuen River, Hong Kong. K.M. TSUI, K.D. Hyde, and I.J. Hodgkiss. University of Hong Kong

2:30 Examination of genet size of two ectomycorrhizal fungi from the southern Sierra Nevada: Gautieria monticola and Suillus (Gastrosuillus) suilloides using AFLP markers. J. TAN, L.C. Grubisha, F.J. Camacho, and T.D. Bruns. University of California, Berkeley

2:45 Origins and epidemiology of Sclerotinia sclerotiorum genotypes on Southeastern US canola: the power of multilocus DNA sequence data, combined datasets and phylogeographic statistical approaches. L. M. KOHN and I. Carbone. University of Toronto, Mississauga, ON, Canada

3:00 Competition by soil microbes with roots under decomposing logs. J.D. LODGE, D. Winter, and N.C. Clum. USDA Forest Service, Luquillo PR

3:15 Species diversity of saprotrophic macromycetes in the Pakaraima Mountains of Guyana. M.C. AIME and T.W. Henkel. Duke University, Durham NC

3:30 Factors influencing the distribution of mangrove fungi. J.P. SCHMIT and C.A.Shearer. University of Illinois, Urbana

3:45 Break

4:00 Population genetic analysis of Fusarium graminearum lineages 6 and 7. U.L. ROSEWICH, C.A. Hernick, K. Takamura and H.C. Kistler. USDA ARS, University of Minnesota, St. Paul

4:15 Studies in the genetics of a new Phytophthora species associated with Sudden Oak Death in California. M. GARBELOTTO (1), D.M. Rizzo 2), and J.M. Davidson (2). (1) University of California, Berkeley, and (2) University of California, Davis

4:30 Transmission of Phytophthora associated with Sudden Oak Death in California. J.M. DAVIDSON (1), D.M. Rizzo (1), and M. Garbelotto (2). (1) University of California, Davis, and (2) University of California, Berkeley

4:45 Biodiversity and distribution of fungal endophytes on eastern white pine (Pinus strobus) needles. S. SOKOLSKI (1), Y. Piché (1), and J.A. Bérubé (2). (1) Université Laval, Ste-Foy, QC, Canada, and (2) Canadian Forest Service, Ste-Foy, QC, Canada

2:15 - 5:45 pm 250A
MSA Contributed Presentations
Systematics and Evolution I

Presiding: J. Platt, University of California, Berkeley

2:15 Taxonomic biodiversity and community structure of saprotrophic fungi in improved and unimproved upland grasslands. J.E. PRYCE MILLER (1), B.W. Bainbridge (1) J.C. Frankland (2), and C. H. Robinson (1). (1) King’s College, London, UK, and (2) Centre for Ecology & Hydrology, Cumbria, UK

2:30 Extreme morphological variability among sympatric neotropical species of Clavulina and Craterellus. J. THACKER, T.W. Henkel, and R. Vilgalys. Duke University, Durham, NC

2:45 Molecular systematics of the genus Lactarius (Russulaceae, Russulales) from North America. J.R. HERR (1), A.S. Methven (2), and S.L. Miller (1). (1) University of Wyoming, Laramie, and (2) Eastern Illinois University, Charleston

3:00 A challenge to traditional classification of Leotia species - phylogenetic and biogeographic studies of Leotia species by ITS and RPB2 sequences. Z. ZHONG and D.H. Pfister. Harvard University, Cambridge, MA

3:15 Molecular phylogenetics of the genus Hysterangium and the Gomphales/Phallales fungi. K. HOSAKA (1), W. Colgan III (2), M.A. Castellano (3), and J.W. Spatafora (1). (1) Oregon State University, Corvallis; (2) Louisiana Tech University, Ruston; and (3) US Forest Service, Corvallis, OR

3:30 Criteria for species delimitation in the chytrid genus Rhizophydium. P.M. LETCHER, J.G. Chambers, and M.J. Powell. University of Alabama, Tuscaloosa

3:45 Break

4:00 Identity of Amanita species infected by Hypomyces hyalinus. H.E. HALLEN and G.C. Adams. Michigan State University, East Lansing

4:15 Phylogeography and population biology of Russula brevipes. S.E. BERGEMANN and S.L. Miller. University of Wyoming, Laramie

4:30 Aliquandostipitaceae (Dothideomycetes; Ascomycota), a family with dimorphic ascomata and unusually wide hyphae. P. INDERBITZIN and M.L. Berbee. University of British Columbia, Vancouver, BC, Canada

4:45 Transition of a pathogenic endophyte to a mutualist by host shift. D. BREM and A. Leutchmann. Geobotanical Institute, ETH, Zurich, Switzerland

5:00 Phylogenetic relationships of Pestalotiopsis and allied genera inferred from ribosomal DNA sequences. R.V. JEEWON, E.C.V Liew, G.J.D. Smith, I.J. Hodgkiss, and K.D. Hyde. University of Hong Kong

5:15 The use of multi-gene phylogenies and morphology in establishing species boundaries in the Lasiosphaeria ovina (Lasiosphaeriaceae, Sordariales, Ascomycetes) species complex. A.N. MILLER (1,2) and S.M. Hundorf (2). (1) University of Illinois, Chicago, and (2) The Field Museum of Natural History, Chicago IL

5:30 Molecular systematics of the Xylariales inferred from 18S rDNA sequence data. G.J.D. SMITH, E.C.V. Liew, R.V. Jeewon, and K.D. Hyde. The University of Hong

Monday, August 27

8 - 11 am 251F
Plant Disease Management
Promises and Pitfalls of GMO Crops in the Tropics

Sponsor(s): APS Tropical Plant Pathology Committee. Presiding: J.Y. Uchida, University of Hawaii, Honolulu

8:00 Introduction. J. UCHIDA. University of Hawaii, Honolulu

8:35 Attitudes towards the introduction of genetically-modified crops into West Africa. M. SETAMOU (1), A.H. Bokonon-Ganta (1,2), and G. Gbehounou (2). (1) Texas A&M University, College Station, and (2) Plant Protection Service, Republic of Benin

9:05 The science and politics of genetically-modified plants in Latin America. L.A. CALVERT. CIAT, Cali, Colombia

9:35 Break

9:50 Rainbow and Sunup for papaya ringspot virus control: The Hawaiian experience. S. FERREIRA. University of Hawaii, Honolulu

10:20 Genetically-modified crops in the Pacific islands: Attitudes and opportunities. M.N. PEARSON (1) and J. Wright (2). (1) University of Auckland, Auckland, New Zealand, and (2) Secretariat of the Pacific Community, Suva, Fiji

8 - 11:15 am 250C
APS Oral Presentations
Molecular/Cellular Plant-Microbe Interactions I

Presiding: B. Kirkpatrick and D. Sands

8:00 Genome-scale gene identification, disruption and function analysis in filamentous fungi. C. LO, R. Heiniger, M. Tanzer, A. Skalchunes, B. Darveaux, M. Giagnacova, S. Mahanty, G. Nelson, K. Peoples, K. Adachi, S. Frank, T. Dezwaan, M. Montenegro, W. Zhang, L. Hamer, and J. Shuster. Paradigm Genetics Inc., Research Triangle Park NC

8:15 Transposon mutagenesis of Xylella fastidiosa by electroporation of Tn5 synaptic complexes. M.R. GUILHABERT (1), L.M. Hoffman (2), D.A. Mills (1) and B.C. Kirkpatrick (1). (1) University of California, Davis, and (2) Epicentre Technologies, Madison WI

8:30 Reaction of Chenopodium quinoa leaves to infiltrated Xylella fastidiosa. G. BRUENING (1), E.L. Civerolo (1,2), J. Jernstedt (1), E.B. Re (1), and J.M. Buzayan (1). (1) University of California, Davis, and (3) USDA ARS, Davis CA

8:45 Cloning and characterization of the gene encoding a transcription factor involved in the negetive thermoregulation of argK of Pseudomonas syringae pv. phaseolicola. R. Xu, G. Mocz, K.B. Rowley and S.S. PATIL. University of Hawaii, Honolulu

9:00 Towards the development of short synthetic genes for multiple virus resistance. G. FERMIN and D. Gonsalves. Cornell University, Geneva NY

9:15 Satellite panicum mosaic virus capsid protein induces symptoms in a non-host plant. W.P. QIU (1) and K.-B. G. Scholthof (2). (1) Southwest Missouri State University, Mountain Grove, and (2) Texas A&M University, College Station

9:30 Resistance to turnip crinkle virus: Understanding defense signaling against a viral pathogen of Arabidopsis. P. KACHROO, M. Cooley, H.J. Wu, S. Pathirana, K. Yoshioka, and D. Klessig. Boyce Thompson Institute, Ithaca, NY

9:45 Characterization of the viral component in Odontoglossum ringspot virus that limits its ability to infect Nicotiana sylvestris. S. RABINDRAN and W.O. Dawson. University of Florida, Lake Alfred

10:00 Break

10:15 Suppression of RNA silencing in plants. A. Mallory, T. H. Smith, B. Roth, and V.B. VANCE. University of South Carolina, Columbia

10:30 Systemic induction of ferulic acid and other phenolic compounds in Pinus nigra inoculated with Sphaeropsis sapinea. J.T. BLODGETT and P. Bonello. Ohio State University

10:45 Introduction of a citrus blight associated gene into Carrizo citrange (C. sinensis x Poncirus trifoliata [L.] ) by Agrobacterium tumefaciens. M.K. KAYIM (1), T.L. Ceccardi (2), M.J.G. Berretta (1), G.A. Barthe (1), and K.S. Derrick (1). (1) University of Florida, Lake Alfred, and (2) Celera Functional Genomics, South San Francisco CA

11:00 Amino acids and their role in plant disease. D.C. SANDS and A.L. Pilgeram. Montana State University, Bozeman

8 - 11:30 am 250B
APS Oral Presentations
Diseases of Plants: Field Crops

Presiding: G. Tabor and J. Lamondia

8:00 Effects of the sudden death syndrome and charcoal rot pathogens on nodulation and N₂ fixation in soybean. D.P. PARTRIDGE, J.S. Russin, and B.P. Klubek. Southern Illinois University, Carbondale

8:15 Soybean sudden death syndrome and the soil physical environment: A two-year study. C.M. VICK, S.K., Chong, J.P. Bond, and J.S. Russin. So_{uthern Illinois University, Carbondale}

8:30 Root health problems affecting wheat production in Saudi Arabia. J.O. BECKER (1) and M.A. Braim (2). (1) University of California, Riverside, and (2) Corpslanding, Hutton Cranswick, Driffield, UK

8:45 Multiplex PCR detection of Clavibacter michiganensis subsp. sepedonicuswith molecular beacon technology. D. MILLS, B.W. Russell, J.M. Schrunk, and Å.K. Preston. Oregon State University, Corvallis

9:00 Impatiens necrotic spot virus in georgia peanut. L. WELLS, A.K. Culbreath, and H.R. Pappu. University of Georgia, Tifton

9:15 In vivo and in vitro tests to determine effects of soybean herbicides on the charcoal rot fungus, Macrophomina phaseolina. A.J. HOSKINS, B.G. Young, and J.S. Russin. Southern Illinois University, Carbondale

9:30 Control of bacterial panicle blight of rice with foliar applications of bactericides. D.E. GROTH (1), A.K.M. Shahjahan (2), and M.C. Rush (2). (1) Rice Research Station, Crowley LA, and (2) Louisiana Statea University, Baton Rouge

9:45 Fungal pathogens associated with corn roots in Illinois. E.S. BUCHER (1), J.S. Russin (1), and W.L. Pedersen (2). (1) Southern Illinois University, Carbondale, and (2) University of Illinois, Urbana

10:00 Break

10:15 Management of root diseases of strawberry. F.N. MARTIN. USDA ARS, Salinas CA

10:30 Heterodera glycines increases susceptibility of soybeans to Phialophora gregata. G.M. TABOR, G.L. Tylka, and C.R. Bronson. Iowa State University, Ames

10:45 The relation between tobacco cyst nematode density and damage to broadleaf tobacco. J.A. LAMONDIA. Connecticut Agricultural Experiment Station, Windsor

11:00 Remote detection of beet necrotic yellow vein virus. K. STEDDOM, G. Heidel, D. Jones, and C.M. Rush. Texas Agricultural Experiment Station, Bushland

11:15 A comprehensive diagnostic kit for the detection of bacteria, fungi, viroids, and viruses in a single test. D. SCOTT (1,2), K. Haymes (1), and C. Thomas (1). (1) D-Squared BioTechnologies Incorporated, Atlanta GA, and (2) Morehouse College, Atlanta GA

8 - 11: 30 am 250F
APS Oral Presentations
Biology of Plant Pathogens: Fungi I

Presiding: S. Goodwin and J. Travis

8:00 Population structure of Phytophthora infestans in Nepal. S.R. GHIMIRE, I.J. Hodgkiss, K.D. Hyde, and E.C.Y. Liew. University of Hong Kong, Hong Kong

8:15 Visual viability assay for oospores of Aphanomyces cochlioides. A.T. DYER and C.E. Windels. University of Minnesota, Crookston

8:30 Investigating factors that may contribute to the increased prevalence of Phytophthora capsici-induced diseases in south Florida. R.C. PLOETZ, J. Haynes, G. Heine, and M. Watson. University of Florida, Homestead

8:45 Cold tolerance of mycelium from four different genotypes of Phytophthora infestans. R.S. SHAW and W.W. Kirk. Michigan State University, East Lansing

9:00 Is Alternaria alternata ubiquitous or commonly misidentified? R. G. ROBERTS. USDA ARS, Wenatchee WA

9:15 Species and mating-type distribution of Tapesia yallundae and Tapesia acuformis in the U.S. Pacific Northwest. G.W. DOUHAN (1), T.D. Murray (1), and P.S. Dyer (2). (1) Washington State University, Pullman, and (2) University of Nottingham, Nottingham, UK

9:30 Sexual reproduction and host resistance in the Mycosphaerella graminicola-wheat pathosystem. C. COWGER and C.M. Mundt. Oregon State University, Corvallis

9:45 Genetic diversity of Colletotrichum graminicola in a worldwide collection of isolates from sorghum. S.B. WARE, C.A. Guerber, and D.O. TeBeest. University of Arkansas, Fayetteville

10:00 Break

10:15 The biology and distribution of Gibberella zeae in Australia and Southeast Asia. L.W. BURGESS (1), B.A. Summerell (2), J.L. Smith-White (1,2), M. Colville (1) and T.N. Ha (1). (1) University of Sydney, Australia, and (2) Royal Botanic Gardens, Australia

10:30 Genetic characterization and detection of Typhula species and Typhula ishikariensis biological species by DNA markers and sequences of transcribed ribosomal DNA. G. JUNG, S. Hong, and D. Maxwell. University of Wisconsin, Madison

10:45 Pathogenicity of Fusarium spp., Cylindrocarpon sp. and Diplodina sp. on grape roots. B.K. GUGINO, J.W. Travis, and E.L Stewart. Pennsylvania State University, University Park

11:00 Phylogenetic analyses of ITS and 18S rDNA sequences reveal the evolutionary relationships of Rhynchosporium secalis. S.B. GOODWIN. USDA ARS, Purdue University, West Lafayette IN

11:15 A transposable element from Mycosphaerella graminicola. Y. TIAN (1), J.R. Cavaletto (2), and S.B. Goodwin (2). (1) Purdue University, West Lafayette IN, and (2) USDA ARS, West Lafayette IN

8 - 11:30 am 250E
SON Oral Presentations
Student Paper Competition

Presiding: R. Bolla and D. Bird

8:00 Evaluating the potential for antagonism between an aphid predator and entomopathogenic nematodes. J.R. POWELL and J.M. Webster. Simon Fraser University, Burnaby, Vancouver, BC, Canada.

8:15 Effects of benzo-(1,2,3)-thiadiazole-7-carbothioic acid S-methyl ester on reproduction of Rotylenchulus reniformis on cowpea and pineapple. B. CHINNASRI, B.S. Sipes, and D.P. Schmitt. University of Hawaii, Honolulu

8:30 A novel cell wall degrading enzyme in the plant parasitic nematode Meloidogyne incognita. M. DAUTOVA, H. Overmars, A. Schots, F.J. Gommers, J. Bakker, and G. Smant. Wageningen University and Research Center, Wageningen, Netherlands

8:45 Application of geostatistical tools to assess the spatial distribution of Heterodera glycines. F. AVENDAÑO (1), F.J. Pierce (2), O. Schabenberger (3) and H. Melakeberhan (1). (1) Michigan State University, East Lansing; (2) Washington State University, Prosser; (3) Virginia Polytechnic Institute and State University, Blacksburg

9:00 Potential management of Colorado potato beetle with the entomopathogenic nematode Heterorhabditis marelatus. N. COTTRELL, E. Grafius, and H. Melakeberhan. Michigan State University, East Lansing

9:15 Magnesium partitioning in Coffea arabica infected with Meloidogyne konaensis. D.R. HURCHANIK, D.P. Schmitt, and N.V. Hue. University of Hawaii, Honolulu

9:30 Virulence mechanism of the rhabditid nematode Phasmarhabditis hermaphrodita and it associated bacterium Moraxella osloensis to the grey garden slug Deroceras reticulatum. L. TAN and P.S. Grewal. Ohio State University, Wooster

9:45 Identification of RFLP loci flanking a nematode resistance locus in peanut. G.T. CHURCH (1), C.E. Simpson (2), M.D. Burow (3), and J.L. Starr (1). (1) Texas A&M University, College Station; (2) Texas Agricultural Experiment Station, Stephenville; and (3) Texas Agricultural Experiment Station, Lubbock

10:00 Break

10:15 Evaluation of bacterial communities associated with the soybean cyst nematode, Heterodera glycines Ichinohe. E. HUI. University of Western Ontario, London, ON, Canada

10:30 Tritrophic interactions between perennial ryegrass, black cutworms, and an entomopathogenic nematode. B.A. KUNKEL and P.S. Grewal. Ohio State University, Wooster

10:45 Role of endophyte-infected fescue for nematode suppression in West Virginia orchards. J.R. HENDRICKS and J. B. Kotcon. West Virginia University, Morgantown

11:00 Transgenic arabidopsis that expresses CaMV gene VI complements a CaMV isolate that contains a lethal mutation. W. YU and J.E. Schoelz. University of Missouri, Columbia

11:15 Mechanisms by which Tylenchulus semipenetrans may mitigate virulence of Phytophthora nicotianae to citrus seedlings. F.E. KORA, L.W. Duncan, and J.H. Graham. University of Florida, Lake Alfred

8 am - 12 pm Ballroom D
Professionalism/Outreach/Service
Extension.edu

Sponsor(s): APS Extension Committee Presiding: B. Turechek, Cornell University, Geneva NY

8:00 Introduction. B. TURECHEK. Cornell University, Ithaca, NY

8:05 Adult learners and technology. B. DRAPER. Southwest State University, Marshall MN

8:35 Webpage design: Starting from scratch and effective use of graphics. D.M. EASTBURN. University of Illinois, Urbana

9:20 Communicating over land, air, and sea: A rapid-fire demonstration of wireless, streaming, and application serving technologies. E. HAWLEY. Utah State University, Logan

10:10 Break

10:25 It’s infectious! Plant diseases on the web. J.A. CHATFIELD. Ohio State University, Wooster

10:55 Hide and seek on the Internet: A guide to effective searching and listing. K.K. BREWER. Utah State University, Logan

11:25 Open discussion

9 - 10 am Ballroom B
MSA Karling Lecture
Natural Genetic Variation-A Hidden Resource

Sponsor(s): MSA. Presiding: S.O. Rogers, Bowling Green State University, Bowling Green OH

9:00 Introduction. S.O. ROGERS. Bowling Green State University, Bowling Green OH

9:05 Natural genetic variation - A hidden resource. L. HARTWELL. Fred Hutchinson Cancer Research Center, Seattle, Washington

9 am - 12 pm Ballroom C
Joint APS/SON Symposium
Nematicides in the Past, Present and Future

Sponsor(s): SON Industry Committee, APS Chemical Control and Nematology Committees. Presiding: C. Kohls, BASF Corp., Princeton NJ

9:00 Introduction. C. KOHLS. BASF Corp., Princeton NJ

9:05 Nematicides of the Past. V. MORTON. Viva, Inc., Greensboro NC

9:35 Present regulatory challenges for nematicide registration. L. ZANG. Syngenta Crop Protection, Greensboro NC

9:55 Present needs for new nematicides. Speaker to be announced and R. Michell. Environmental Protection Agency, Dale City VA

10:15 Present products for nematode suppression. J. NOLING. University of Florida, Lake Alfred

10:45 Break

11:00 Hurdles for integrated control methods. J.O. BECKER. University of California, Riverside

11:30 Current research for future products. L. PAYAN. Novartis Crop Protection, Vero Beach FL

9 am - 12 pm 151A
12 - 5 pm Thanksgiving Point Institute (field trip)
Professionalism/Outreach/Service Workshop
School Gardens: Nourishing Bodies, Expanding Minds

Sponsor(s): APS Youth Programs Committee. Presiding: R.N. Raid, University of Florida, Belle Glade

9:00 Introduction and overview. R. RAID. University of Florida, Belle Glade

9:15 Youth garden programs around the U.S. J. FLINT. National Gardening Association, Burlington VT

10:00 How to organize and set up a school garden: Funding, materials and supplies, volunteers, linkages. R.N. RAID. University of Florida, Belle Glade

10:30 Break

10:45 School gardens-Behavioral and nutritional aspects. M.E. REUTER. University of Florida, Belle Glade

11:05 School gardens-Expanding minds. The relevance of school gardens to the curricula. D. SPIELMAKER. Utah State University, Logan

11:25 Achieving the full potential: An overview

Field Trip

12:00 Travel to Thanksgiving Point Institute (Lehi, UT) by Gray Lines Motor Coach

12:30 Catered lunch

1:00 Youth gardening and educational programs at Thanksgiving Point Institute. D. SPIELMAKER. Utah State University, Logan

2:45 Break

3:00 School gardens as a means of introducing youth to the plant sciences

3:30 Garden tour

4:30 Return to Salt Lake City Convention Center

9 am - 12:15 pm Ballroom A
Epidemiology/Ecology/Environmental Plant Pathology
Enhancing Microbial Biocontrol of Postharvest Fruit Pathogens

Sponsor(s): APS Postharvest Pathology and Biological Control Committees. Presiding: W.J. Janisiewicz and W.S. Conway, USDA ARS, Kearneysville, WV, and Beltsville, MD

9:00 Introduction: Next generation of biological control against postharvest diseases of fruits. W. JANISIEWICZ. USDA ARS, Kearneysville WV

9:30 Assessing microbial habitats on plants to understand processes leading to biological control of diseases. S. LINDOW. University of California, Berkeley

10:00 Use of molecular tools to enhance antagonistic activity of yeasts against postharvest diseases of apples. H. JIJAKLI, D. Declerq, S. Cognet, S. Massart, C. Grevesse and P. Lepoivre. University des Sciences Agronomiques, Gembloux, Belgium

10:30 Break

10:45 Bioactive coating for control of postharvest diseases of citrus fruits. A. EL GHAOUTH, C. Wilson (2), M. Wisniewski (2), S. Droby (3), J. Smilanick (4), and L. Korsten (5). (1) Micro Flo Co., Memphis, TN; (2) USDA-ARS, Kearneysville, WV; (3) Volcani Center, Israel; (4) USDA ARS, Fresno CA; and (5) University of Pretoria, Pretoria, South Africa

11:05 Enhancing antagonist’s ecological fitness by manipulation of endogenous polyols and sugars to improve efficacy of biocontrol of fruit decays. J. USALL, (1), N. Teixidó (1), N. Magan (2), and I. Viñas (1). (1) CeRTACatalonia, Spain, and (2) Cranfield University, Cranfield, Bedford, UK

11:25 Control of postharvest diseases of pome fruits by field application of biocontrol agents. D. SUGAR. Southern Oregon Research and Extension Center, Medford

11:45 Discussion

9:30 am - 12:00 pm 251DE
Epidemiology/Ecology/Environmental Plant Pathology
Risks of Introducing Invasive Species on Seed and Propagative Materials: Regulations and Their Consequences

Sponsor(s): APS Seed Pathology and Regulatory Plant Pathology Committees. Presiding: P. Himmel, Seminis Vegetable Seeds, Woodland CA

9:30 Introduction. P. HIMMEL. Seminis Vegetable Seeds, Woodland CA

9:35 Safeguarding plant resources: An overview of recommendations and the regulatory process. E. PODLECKIS. USDA APHIS PPQ BATS, Riverdale MD

9:55 New methodologies (biosensors, molecular beacons, etc.) for detecting invasive species. J. VAN DER WOLF. ISC, Wageningen The Netherlands

10:15 Risk assessment models for seedborne diseases. J. PATAKY. University of Illinois, Urbana

10:35 Break

10:50 Industry perspective: The executive order on risk assessment for invasive species and their regulation. L. CAHILL. ASTA

11:10 Is the seed industry over regulated? D. McGEE. Iowa State University, Ames

11:30 Discussion

10 am - 1:00 pm Ballroom B
Joint APS/MSA Symposium
Ustilago maydis

Sponsor(s): MSA, APS. Presiding: F. Banuett, University of California, San Francisco

10:00 Introduction. F. BANUETT. University of California, San Francisco

10:05 From bud to appressorium: Morphology of the Ustilago maydis transition from saprobic to parasitic growth. K. SNETSELAAR and M.P. McCann. St. Joseph’s University, Philadelphia, PA

10:35 Behavior of Ustilago maydis in the experimental infection of alternate hosts and tissue cultures. J. RUIZ-HERRERA. CINVESTAV, Irapuato, Mexico

11:05 Signaling and pathogenic development in Ustilago maydis. R. KAHMANN. Max-Planck-Institut fuer terrestrische Mikrobiologie, Marburg, Germany

11:35 Signal transduction in the in vitro dimorphic transition of Ustilago maydis (corn smut). A.D. MARTÍNEZ-ESPINOZA (1,2), J. Ruiz-Herrera (2), C. Leon-Ramirez (2), and S.E. Gold (1). (1) University of Georgia, Athens, and (2) CINVESTAV-IRAPUATO, Iruapuato, Gto., Mexico

12:05 Morphological mutants of Ustilago maydis. M. BÖLKER and L. Leveleki. University of Marburg, Germany

12:35 Sex, signaling and morphogenesis in smut fungi. J. KRONSTAD, N. Lee, K. Wake, G. Jiang, J. Klose, J. Schein, M. Marra and S. Jones. University of British Columbia, Vancouver, BC, Canada

10:30 - 12:30 pm 250A
MSA Contributed Presentations
Ecology and Pathology I

Presiding: W.A. Unteriener, Brandon University, Manitoba

10:30 Characterization of the ectomycorrhizal fungi associated with Kobresia myosuroides. C.W. SCHADT and S. K. Schmidt. University of Colorado, Boulder CO

10:45 Ectotrophic symbionts of tree seedlings across Rhododendron maximum gradients in the Appalachian Mountains. J.F. WALKER and O.K. Miller. Virginia Polytechnic Institute and State University, Blacksburg, VA

11:00 The role of naturally occurring ectomycorrhizae in revegetation of a trace metal stressed site in Southwest Virginia. R.A. BELLING and O.K. Miller. Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg, VA

11:15 The statistical comparison of species diversity among fungal communities. D.L.L. CZEDERPILTZ, G.R. Stanosz, and E.V. Nordheim. University of Wisconsin, Madison

11:30 Biocontrol species of Trichoderma have Hypocrea teleomorphs with green ascospores. P. CHAVERRI (1), G.J. Samuels (1), and E.L. Stewart (2). (1) USDA ARS, Beltsville, MD, and (2) Pennsylvania State University, University Park

11:45 Habitat associations of three Cantherellus species in the Oregon Cascade Mountains. K.P. COLLINS, S. Dunham, T. O’Dell, and R. Molina. Oregon State University, Corvallis, OR

12:00 Dicymbe forests as habitat islands for ectomycorrhizal fungi in the Pakaraima Mountains of Guyana. T. HENKEL, J. Terborgh, and R. Vilgalys, Duke University, Durham, NC

12:15 Integration of physical, chemical and biological methods for control of wheat root and foot rot caused by Fusarium graminearum and Cochliobolus sativus. M.A. EL-MELEIGI. King Saud University, Burydah, Saudi Arabia

1 - 2:15 pm 250F
APS Oral Presentations
Plant Disease Management: Cultural

Presiding: D. Huber

1:00 Effects of soil temperature, moisture and planting date on soybean sudden death syndrome root and foliar disease. J.D. VEST and J.S. Russin. Southern Illinois University, Carbondale

1:15 Stalk rot of corn relative to N rate, form and kernel sink sufficiency. D.M. HUBER (1), K. Schnelle (2), J. Young (2), J.D. Leuck (1), and I.A. Thompson (1). (1) Purdue University, West Lafayette IN, and (2) Dow AgroSciences

1:30 Susceptibility of California strawberry cultivars to California isolates of Phytophthora fragariae var. fragariae. M.R. VAZQUEZ (1) and G.T. Browne (2). (1) University of California, Davis, and (2) USDA ARS, University of California, Davis

1:45 Severity of gray leaf spot (blast) of perennial ryegrass turf as influenced by nitrogen source. W. UDDIN, M. D. Soika, J. Shelton, and E. L. Soika. Pennsylvania State University, University Park

2:00 Effect of sowing times and fungicides on blackleg severity and yield of canola in Western Australia. R. KHANGURA and M. Barbetti. Agriculture Western Australia, Bentley, WA, Australia

1 - 3 pm 150G
Joint APS/MSA-Professionalism/Outreach/Service
Workshop: Fungi and Indoor Air Quality

Sponsor(s): APS Mycology Committee. Presiding: F. Dugan, USDA ARS, Pullman WA

1:00 Introduction. F. DUGAN. USDA ARS, Pullman WA

1:05 Fungi in indoor environments - Detection and identification. R.A. SAMSON. Centraalbureau voor Schimmelcultures, Baarn, The Netherlands

1:35 Fungal diseases associated with indoor environments. M.R. McGINNIS. University of Texas, Galveston

2:05 Break

2:10 Examination of materials

1 - 3:15 pm 250E
SON Oral Presentations
Biochemistry/Physiology/Molecular Biology

Presiding: E. Platzer and B. Hyman

1:00 Termination of obligate developmental dormancy in an ascarid. E.G. PLATZER (1), L.T. Luong (2), and N. Hinkle (3). (1) University of California, Riverside; (2) University of California, Davis; and (3) University of California, Riverside

1:15 AFLP analysis to investigate the parasitic ability of the soybean cyst nematode, Heterodera glycines. N. ATIBALENTJA, G.R. Noel, and L.L. Domier. (1) University of Illinois, Urbana, and (2) USDA-ARS, Urbana IL

1:30 Multiplex PCR identification and diagnostic system of Meloidogyne species. D.D. SUI (1), D.A. Kluepfel (1), B.A. Fortnum (2), and S.A. Lewis (1). (1) Clemson University, Clemson SC, and (2) Clemson University, Florence SC

1:45 Patterns of nucleotide substitution within the Meloidogyne rDNA D3 region. P.C. CHEN (1), P.A. Roberts (1), A.E. Metcalf (2) and B.C. Hyman (1). (1) University of California, Riverside, and (2) California State University, San Bernardino

2:00 Screening a soybean cyst nematode BAC library for cellulase gene organization. Y. YAN, B. Sosinski, C. Opperman, and E.L. Davis. North Carolina State University, Raleigh

2:15 Screening of peanut germplasm segregating for resistance to the root-knot nematode using SCAR primers and RFLP markers. I.F. BENDEZU (1), M. Burow (2), C. Simpson (3) and J. L. Starr (1). (1) Texas A&M University, College Station; (2) Texas Agricultural Experiment Station, Lubbock; and (3) Texas Agricultural Experiment Station, Stephenville

2:30 Cloning and analysis of root-knot nematode esophageal gland genes. K.N. LAMBERT. University of Illinois, Urbana

2:45 Cloning and characterization of new esophageal gland genes in root-knot nematode. S. BEKAL and K.N. Lambert. University of Illinois, Urbana

3:00 Cloning putative parasitism genes expressed in the esophageal gland cells of the soybean cyst nematode. B. GAO (1), R. Allen (1), T. Maier (2), E.L. Davis (3), T.J. Baum (2), and R.S. Hussey (1). (1) University of Georgia, Athens; (2) Iowa State University, Ames; and (3) North Carolina State University, Raleigh

1 - 4 pm Ballroom C
Joint APS/MSA-Biology of Pathogens
Role of Fungal Extracellular Matrix in Host Infection

Sponsor(s): APS Phyllosphere and Microbiology Committees, MSA. Presiding: R.L Nicholson, Purdue University, West Lafayette IN

1:00 Concept, visualization, and function of the fungal extracellular matrix in host infection. R.L NICHOLSON. Purdue University, West Lafayette IN

1:30 Extracellular fungal matrix: Role in adhesion. L. EPSTEIN. University of California, Davis

2:00 The extracellular matrix of Bipolaris sorokiniana. D. APOGA (1), H.-B. Jansson (1), B. Ek (2), and A. Tunlid (1). (1) Lund University, Lund, Sweden, and (2) The Swedish University of Agricultural Sciences, Uppsala, Sweden

2:30 Break

2:45 Colletotrichum graminicola and Bipolaris maydis ECM, release and interaction-specific gene expression. J.A. SUGUI (1,2), H.B. Deising (2), and R.L. Nicholson (2). (1) Martin Luthern University, Halle-Wittenberg, Germany, and (2) Purdue University, West Lafayette, IN

3:15 Surface sensing and response in Blumeria graminis: Micromanipulation and geometric modeling. A.J. WRIGHT and T.L.W. Carver. The Institute for Grasslands and Environmental Research, Near Aberystwyth, Wales

3:45 Visualization of the extracellular matrix and conidial morphology of Pestalotia malicola. A. GEVENS and R.L. Nicholson. Purdue University, West Lafayette IN

1 - 4 pm 250C
APS Oral Presentations
Plant Disease Management: Biological I

Presiding: M. Boehm and K. Horst

1:00 Potential pathogenic fungi on orobanche spp. in Jordan. K.M. HAMEED and Z. Al-Shyab. Jordan University, Irbid, Jordan

1:15 Induced resistance by Stenotrophomonas maltophilia strain C3 suppresses conidial germination and leaf spot development by Bipolaris sorokiniana (Bs). O. KILIC and G.Y. Yuen. University of Nebraska, Lincoln

1:30 Integration of physical, chemical and biological methods for control of wheat root and foot rot caused by Fusarium graminearum and Cochliobolus sativus. M.A. El-MELEIGI. King Saud University, Burydah, Saudi Arabia

1:45 Scale-up of biomass production, processing and storage for two yeast antagonists of Gibberella zeae. D.A. SCHISLER (1), N.I. Khan (2), L.B. Iten (1), and M.J. Boehm (2). (1) USDA ARS, Peoria, IL, and (2) Ohio State University, Columbus

2:00 Phenotypic characteristics of protoplast fusants of Trichoderma virens and T. longibrachiatum. C.R. HOWELL (1), L.E. Hanson (2), L.S. Puckhaber (3), and R.D. Stipanovic (1). (1) USDA ARS, College Station TX; (2) USDA ARS, Ft. Collins CO; and (3) Texas A&M University

2:15 Potential of uridine augmentation to enhance wheat head colonization and efficacy of Fusarium head blight antagonist Bacillus subtilus AS 43.3. J. M. IERULLI (1), D. A. Schisler (1) and R. V. Gessner (2). (1) USDA ARS, Peoria IL, and (2) Western Illinois University, Macomb

2:30 Combinations of dry rot antagonistic bacteria enhance biological control consistency in stored potatoes. P.J. SLININGER (1), D.A. Schisler (1), and G. Kleinkopf (2). (1) USDA ARS, Peoria IL, and (2) University of Idaho, Kimberly

2:45 Break

3:00 Pesta-encapsulated Fusarium oxysporum f. sp. orthoceras, a capable mycoherbicide for Orobanche cumana. Y.M. SHABANA and J. Sauerborn. University Hohenheim, Stuttgart, Germany

3:15 Use of mutualistic fungal endophytes for biological enhancement of tissue culture derived planting material for the control of fungal wilt and plant parasitic nematodes on banana. R.A. SIKORA, University Bonn, Bonn, Germany

3:30 Enhancement of biocontrol of fire blight with an iron chelate. V.O. STOCKWELL (1), K.B. Johnson (1), and J.E. Loper (1,2). (1) Oregon State University, Corvallis, and (2) USDA ARS, Corvallis OR

3:45 Interaction between the vesicular arbuscular mycorrhizal fungus Glomus intraradices and white rot in onions caused by Sclerotium cepivorum Berk. M.D.L.A. JAIME, T. Hsiang, and M.R. McDonald. University of Guelph, Guelph, ON, Canada

1 - 5 pm 250B
APS Oral Presentations
Epidemiology/Ecology/Environmental Plant Pathology II

Presiding: R. Hamelin and J. Bérubé

1:00 Disease gradients from rice blast inoculum sources observed at the beginning of epidemics. K. ISHIGURO (1), R. Harasawa (2), and T. Kobayashi (1). (1) Tohoku National Agricultural Experiment Station, Morioka, Japan, and (2) Niigata Agricultural Research Institute, Nagaoka, Japan

1:15 Serological relationships of whitefly-transmitted geminiviruses in and around cotton fields in Punjab, Pakistan. M.S. Haider, (1) A. NADEEM (2), A.A.F. Evans (2), and P.G. Markham (4). (1) Pest Warning Dept., Lodhran, Pakistan; (2) Central Cotton Research Institute, Multan, Pakistan; (3) Imperial College, Silwood Park, UK; and (4) John Innes Center, Norwich, UK

1:30 Survival of Gibberella zeae ascospores on the plant surface. Y. JIN, X. Zhang, and L. Osborne. South Dakota State University, Brookings

1:45 Influence of weather on barley yellow dwarf severity and yields of wheat in Alabama. K.L. BOWEN and K. Burch. Auburn University, AL

2:00 Use of an ordinal categorical model to compare and optimize disease severity rating schemes in Rhizoctonia root rot of sugarbeet disease nurseries. D.J. JOHNSON (1), J.M. Halloin (1,2) and L. Panella (3). (1) Michigan State University, East Lansing; (2) USDA ARS, East Lansing MI; and (3) USDA ARS, Ft. Collins CO

2:15 Using a Geographic Information System as a tool to improve the integrated management of barley yellow dwarf in virginia wheat. P.M. SFORZA, S.L. Moore, E.L. Stromberg, and D.A. Herbert. Virginia Polytechnic Institute and State University, Blacksburg

2:30 The interactive disease triangle: An interactive teaching model for introductory plant pathology courses. S. A. HEUCHELIN and M. D. Brooks. Iowa State University, Ames

2:45 Dynamics of Gibberella zeae ascospore dispersal. S. MARKELL and L. Francl. North Dakota State University, Fargo

3:00 Break

3:15 Fungal agents for biological control of invasive Prosopis species in South Africa. C.L. LENNOX and M. Serdani. ARC-PPRI, Stellenbosch, South Africa

3:30 Involvement of Aureobasidium pullulans and Rhodotorula glutinis in russet of d’Anjou pear fruit. R. A. SPOTTS and L.A. Cervantes. Oregon State University, Hood River

3:45 Functional relationship between estimated and actual disease severity. M. NITA, M.A. Ellis, and L.V. Madden. Ohio State University, Wooster

4:00 Effect of cultivar and density of Verticillium dahliae in soil on Verticillium wilt of strawberry. J.J. HAO (1), C.L. Xiao (2), J.M. Duniway (1), and D.M. Dopkins (1). (1) University of California, Davis, and (2) Washington State University, Wenatchee

4:15 Determination of the environmental parameters required for leaf and cane infection by Phomopsis viticola. O. ERINCIK, L.V. Madden, D.C. Ferree, and M.A. Ellis. Ohio State University, Wooster

4:30 Genetic analysis suggests that non-strawberry hosts are a source of inoculum for Colletotrichum crown rot of strawberry. S.J. MACKENZIE, C.L. Xiao, and D.E. Legard. University of Florida, Dover

4:45 Effect of pathogen concentration and exposure frequency on Phytophthora blight of annual vinca under drip irrigation systems. C.X. HONG and G. Epelman. Virginia Polytechnic Institute and State University, Virginia Beach

1- 5 pm 251DE
Molecular/Cellular-Plant-Microbe Interactions
Secretion in Plant-Associated Bacteria, Fungi, and Nematodes

Sponsor(s): APS Genetics, Bacteriology, Biochemistry, Physiology and Molecular Biology Committees. Presiding: G. Upchurch, North Carolina State University, Raleigh

1:00 Introduction. G. UPCHURCH, North Carolina State University, Raleigh

1:05 The type III protein secretion system of Pseudomonas syringae. S.-Y. HE. Michigan State University, East Lansing

1:35 The Agrobacterium T-DNA transfer system: A type IV secretion machine for macromolecular transfer to a wide range of eukaryotic cell types. P.J. CHRISTIE. University of Texas, Houston

2:05 Fungal transporters involved in secretion of natural toxic compounds and fungicides. M. DeWAARD. Wageningen University, Wageningen, Netherlands

2:35 The role of secreted proteins of the pathogenic fungus Cladosporium fulvum in (a)virulence on its host, tomato. M.H.A.J. JOOSTEN, B.F. Brandwagt, R.A.L. van der Hoorn, C.F. de Jong, J.W. Van ’t Klooster, M.J.D. de Kock, M. Kruijt, R. Luderer, F.L.W. Takken, N. Westerink, and P.J.G.M. de Wit. Wageningen University, Wageningen, Netherlands

3:05 Nematode esophageal gland cells: The key to understanding nematode parasitism of plants. R. HUSSEY. University of Georgia, Athens

3:35 Nematode secretions: The makings of a plant parasite. T.J. BAUM. Iowa State University, Ames

4:05 Speaker round table discussion

1 - 5:15 pm 250A
MSA Contributed Presentations
Genetics and Evolution

Presiding: J. Spatafora, Oregon State University, Corvallis

1:00 Clone size, fine-scale population structure, and phylogenetic species in the ectomycorrhizal false-truffle Rhizopogon vinicolor complex. A.M. Kretzer (1), R. Molina (2), L.C. Grubisha (3) and J. W. SPATAFORA (1). (1) Oregon State University, Corvallis; (2) US Forest Service, Corvallis OR, and (3) University of California, Berkeley

1:15 Exploring phlogenetically informative genes applicable to chytrid systematics. J.G. CHAMBERS, P.M. Letcher, V.A. Albert, P.F. Churchill, and M.J. Powell. Tuscaloosa, AL

1:30 A multilocus molecular marker system for studying population subdivision in the rice blast fungus, Magnaporthe grisea B. COUCH and L.M. Kohn. University of Toronto, ON, Canada

1:45 A multigene phylogeny for Cordyceps and the Clavicipitaceae. G.-H. SUNG (1), K.T. Hodge (2), and J.W. Spatafora (1). (1) Oregon State University, Corvallis, and (2) Cornell University, Ithaca, NY

2:00 Major lineages of loculoascomycetes (Ascomycota) inferred from multiple-gene-analyses. R. LINDEMUTH and H.T. Lumbsch. FB9/Botanik, University of Essen, Germany

2:15 Gene expression during Ustilago maydis teliospore germination. N.T. SACADURA, and B.J. Saville. University of Toronto, ON, Canada

2:30 Mitotic and meiotic mapping of Aspergillus nidulans swo mutants. X.R. LIN, B.D. Shaw, and M. Momany. University of Georgia, Athens

2:45 mip as a tool for cloning hymenomycete mating-type genes. T.Y. JAMES (1), U. Kues (2), and R. Vilgalys (1). (1) Duke University, Durham NC, and (2) Swiss Federal Institute of Technology, Zurich, Switzerland

3:00 Break

3:15 The Aspergillus nidulans septin AspB localizes to areas of new growth pre- and post-mitotically. P.J. WESTFALL and M. Momany. University of Georgia, Athens

3:30 Cloning and characterization of Aspergillus nidulans swoA and swoF genes involved in cell polarity. B.D. SHAW, X.R. Lin, and M. Momany. University of Georgia, Athens

3:45 Morphogenesis and apical surface gradients in saprolegniaceous hyphae. J. DIEGUEZ-URIBEONDO (1), G. Gierz (1), and S. Bartnicki-Garcia (2). (1) University of California, Riverside, and (2) CICESE, Centro de Investigaciones Cientificas y Estudios Superiores de Ensenada, Mexico

4:00 The molecular basis of field resistance to QoI fungicides in Pyricularia grisea. M.L. FARMAN. University of Kentucky, Lexington

4:15 Isolation of an Ustilago maydis glycogen synthase kinase 3 gene. A. Mori and B.J. SAVILLE. University of Toronto, ON, Canada

4:30 Evolution and functional analysis of mating type genes (MAT) in sexual (Cochliobolus) and asexual (Bipolaris) fungi. G.S. SAENZ (1), M.L. Berbee (2),and B.G. Turgeon (1). (1) Cornell University, Ithaca NY, and (2) University of British Columbia, Vancouver, BC Canada

4:45 Live cell imaging of hyphal fusions in growing Neurospora colonies. P.C. Hickey (1), D.J. Jacobson (2), N.D. Read (1) and N.L. Glass (2). (1) University of Edinburgh, Edinburgh, UK, and (2) University of California at Berkeley

5:00 Population genomics of drug resistance in experimental populations of Candida albicans. L.E. COWEN, L.M. Kohn, and J.B. Anderson. University of Toronto, ON, Canada

1 - 5:15 pm Ballroom D
Joint APS/SON Symposium
Application of GIS and GPS Precision Agriculture Technologies in Nematology and Plant Pathology

Sponsor(s): SON, APS Plant Disease Losses and Integrated Pest Management Committees. Presiding: H. Melakeberhan, Michigan State University, East Lansing

1:00 Embracing the emerging precision agriculture technologies. H. MELAKEBERHAN. Michigan State University, East Lansing

1:10 Site-specific management in plant pathology. J.E. KURLE. University of Minnesota, St. Paul

1:40 Site-specific management of nematodes-Pitfalls and practicalities. K. EVANS, R.M. Webster, P.D. Halford, A.D. Barker, and M.D. Russell. IARC Rothamsted, Harpenden, England

2:10 Utilization of GIS/GPS-based information technology in commercial crop decision making in California. C.S. THOMAS (1), P.W. Skinner (2), A. Fox (3), and C.A. Greer (1). (1) Fieldwise Inc., Bodega Bay CA; (2) Terra Spase, St. Helena CA; and (3) Fox Weather, Oxnard CA

2:50 Break

3:05 Integration of GIS and remote sensing for perennial crop management. P.V. OUDEMANS. Rutgers University, Chatsworth NJ

3:35 Monitoring hemlock forest decline using satellite change detection techniques. R.G. LATHROP and D.D. Royle. Rutgers University, New Brunswick NJ

4:05 Use of GIS and remote sensing to detect the plant stress caused by soybean cyst nematode. F.W. NUTTER JR., G.L. Tylka, J. Guan, A.J.D. Moreira, C. Marett, J.P. Basart, and C.S. Chong. Iowa State University, Ames

4:35 Discussion. H. MELAKEBERHAN and F.W. NUTTER JR. (moderators)

1 - 5:20 pm Ballroom A
Plant Disease Management
Discussion: New Products and Services

Sponsor(s): APS Industry Committee. Presiding: C.L. Palmer, FMC Corp., Philadelphia, PA

1:00 Introduction

1:05 Cyazofamid-A new systemic fungicide for the control of oomycete plant diseases. M. D. GROVE (1), S. Mitani (2), and T. Bardinelli (3). (1) ISK Biosciences Corp., Houston TX; (2) Ishihara Sangyo Kaisha Ltd., Kusatsu, Japan; and (3) BASF Corporation, Research Triangle Park NC

1:20 Cyazofamid-Efficacy against oomycete fungi. M. D. GROVE (1), S. Mitani (2) and T. Bardinelli (3). (1) ISK Biosciences Corp., Houston TX; (2) Ishihara Sangyo Kaisha Ltd., Kusatsu, Japan; and (3) BASF Corporation, Research Triangle Park NC

1:35 Cyazofamid-Mode of action and disease resistance. M. D. GROVE (1), S. Mitani (2) , H. Miyoshi (3) and T. Bardinelli (4). (1) ISK Biosciences Corp., Houston TX; (2) Ishihara Sangyo Kaisha Ltd., Kusatsu, Japan; (3) Kyoto University, Kyoto, Japan; and (4) BASF Corporation, Research Triangle Park NC

1:50 Milsana bioprotectant-Update. K. Ferrand and H. VON AMSBERG. KHH BioSci, Inc., Raleigh NC

2:05 Stature MZ: A new broad spectrum fungicide for ornamental crops. M. BELL, K. Kalmowitz, and S. Cockreham. SePRO, Corp. Carmel IN, and BASF, Research Triangle Park NC

2:20 Bicarbonate based fungicides: Control of foliar and soil-borne fungal caused diseases. R. K. HORST, M. S. Szyndel, and S. Lajoie. H&I Agritech, Ithaca NY, and Church & Dwight, Princeton NJ

2:35 Previcur Flex: New label directions for late blight control in potatoes, an IPM approach. R. P. Kaiser. Aventis CropScience, Research Triangle Park NC

2:50 Efficacy of Fenomen, a novel fungicide for downy mildew control in potatoes, cucurbits, onions, and lettuce. R. P. Kaiser. Aventis CropScience, Research Triangle Park NC

3:05 Break

3:20 Preview of BASF’s new fungicide products: Activity spectrum and intended uses. T. BARDINELLI, J.S. Barnes, H.L Ypema, and E.J. Butterfield. BASF Corporation, Research Triangle Park NC and Visalia CA

3:35 Update on the status of Acrobat registrations. C. BECKER, C. Hartman, and S. Broscious. BASF Corporation, Romulus NY, Princeton NJ, and Research Triangle Park NC

3:50 Switch: A new fungicide designed to control foliar fungal diseases of onion. G. CLOUD, B. Minton, and B. Bassi. Syngenta Crop Protection, Greensboro NC

4:05 Exploring disease control with Seranade. J. HENSLEY. Agra Quest, Davis CA

4:20 Introduction TM-438-01-Foliar, translaminar fungicide for turf and ornamentals. R. F. FLETCHER. Cleary Chemical Company, Dayton NJ

4:35 Quintec fungicide. J. P. MUELLER. Dow AgroSciences, Brentwood CA

4:50 Medallion-Efficacy for turfgrass diseases. M. L. AGNEW and D. C. Ross. Syngenta Crop Protection, Greensboro NC

5:05 Contans WG (Coniothyrium minitans). B. STONEMAN. Encore Technologies LLC, Minnetonka MN

2 - 4:30 pm 251F
Diseases of Plants
Discussion: Importance of Plant Pathology in Global Trade

Sponsor(s): APS Office of International Programs. Presiding: R. Bennett, USDA ARS, Beltsville MD

2:00 Introduction. G. ABAWI. Cornell University, Ithaca NY

2:10 Science-based initiatives to expedite global trading and exchange of seeds and commodities. D. MCGEE. Iowa State University, Ames

2:40 The smuts and their effect on global wheat trade. D. MATHRE. Montana State University, Bozeman

3:10 International trade and late blight of potato and tomato. W.E. FRY. Cornell University, Ithaca NY

3:40 Fire blight and free trade: A story of science and politics. R. ROBERTS. USDA-ARS, Wanatche WA

4:10 General discussion

7:30 - 9 pm Ballroom D
SON Colloquium
Digitized Images, Video, and 3-D Models for Research and Teaching Nematology and Plant Pathology

Presiding: U. Zunke, University of Hamburg, Hamburg, Germany, and J. D. Eisenback, Virginia Polytechnic Institute and State University, Blacksburg

7:30 Introduction. U. ZUNKE, University of Hamburg, Hamburg, Germany

7:35 An introduction to digitized image databases. J.D. EISENBACK, Virginia Polytechnic Institute and State University, Blacksburg

8:00 Introduction to digitized video for research, teaching and extension. U. ZUNKE, University of Hamburg, Hamburg, Germany

8:30 3-D animations for teaching in agricultural pest management. P. SFORZA, Virginia Polytechnic Institute and State University, Blacksburg

Tuesday, August 28

8 - 11 am 150G
Fungal Systematics: From Species Discovery to Phylogenetic Genomics

Sponsor(s): MSA. Presiding: M.L. Berbee, University of Vancouver, BC Canada

8:00 Introduction. M.L. BERBEE. University of British Columbia, Vancouver, BC, Canada

8:05 Geological time, the common currency of systematics. J.W. TAYLOR (1) and M.L. Berbee (2). (1) University of California, Berkeley, and (2) University of British Columbia, Vancouver, BC, Canada

8:45 Evolution of corticioid basidiomycetes: Exploring the roles of elaboration and reduction in fungal morphological evolution. D.S. HIBBETT and M. Binder. Clark University, Worcester MA

9:25 Phylogenetic relationships among obscure fungi: Why does it matter? A.Y. ROSSMAN, D.F. Farr and L.A. Castlebury. USDA, Beltsville MD

10:05 Trouble(s) with lichen(s). D. HAWKSWORTH. Universidad Complutense, Madrid, Spain, and MycoNova, London, UK

8:30 am - 12 pm 250F
SON Oral Presentations
Management II

Presiding: P. King and R. Steckler

8:30 Agri 50: A non-toxic, broad-spectrum chemical pest management tool. R.M. STECKLER. Cal Agri Products, LLC, Los Angeles CA

8:45 Mapping soybean cyst nematode field distribution. P.A. DONALD (1), K.A. Sudduth (2), and N.R. Kitchen (2). (1) University of Missouri, Columbia, and (2) USDA ARS, University of Missouri, Columbia

9:00 Survey to determine nematodes associated with coffee in Hawaii. D.P. SCHMITT, M. Serracin, and N.V. Hue. University of Hawaii, Honolulu

9:15 Optimizing time of year for remote sensing based nematode sampling in cotton. T.A. WHEELER (1), K. Siders (2), and H.W. Kaufman (1). (1) Texas A&M Research and Extension Center, Lubbock, and (2) Texas Agriculture Extension Service, Levelland

9:30 Molecular diagnostics of economically important nematodes. A.L. SZALANSKI, P.G. Mullin, and T.O. Powers. University of Nebraska, Lincoln

9:45 Growth and yield of coffee as influenced by irrigation, tree age and Meloidogyne konaensis. M. SERRACIN (1), D.P. Schmitt (1) and B.S. Sipes (1). (1) University of Hawaii, Honolulu

10:00 Break

10:15 Fluorescence correlation spectroscopy for in vivo monitoring of resistance mechanisms. A. SCHOTS, R. Dees, A. Goverse, J.W. Borst, J. Bakker and A.J.W.G. Visser. Wageningen University, Wageningen, Netherlands

10:30 Selection and reproduction of Heterodera glycines on resistant soybean germplasm. G.R. NOEL (1,2), S.J. Bauer (2), M.S. Assunção (3), and N. Atibalentja (2). (1) USDA ARS, Urbana IL; (2) University. of Illinois, Urbana; and (3) EMBRAPA Goinia, GO, Brazil

10:45 Tolerance of sugar beet to Heterodera schachtii. J. HALLMANN (1), J. Schlang (2), K. Gierth (1), J. Muller (2), and R.A. Sikora (1). (1) Institut fur Pflanzenkrankheiten, Bonn, Germany, and (2) Institut fur Nematologie und Wirbeltierkunde, Munster, Germany

11:00 Frequency of virulence to cowpea gene Rk in isofemale lines of Meloidogyne incognita. M.D. PETRILLO and P.A. Roberts. University of California, Riverside

11:15 Effect of pearl millet and sorghum hybrids on Pratylenchus penetrans populations and potato yields in Quebec. G. BELAIR, Y. Fournier, and N. Dauphinais. Agriculture and Agri-Food Canada, St.-Jean-sur-Richelieu, QC, Canada

11:30 Plant-parasitic nematodes associated with horseradish in Illinois. S.A. WALTERS (1), M. Babadoost (2), J.P. Bond (1), and D.I. Edwards. (1) Southern Illinois University, Carbondale, and (2) University of Illinois, Urbana

11:45 Chemical management of nematodes in Louisiana: field and microplot trials with cotton, soybean, rice and assorted vegetable species. E.C. MCGAWLEY and C. Overstreet. Louisiana State University, Baton Rouge

9 - 11:30 am 250C
APS Oral Presentations
Plant Disease Management: Host Resistance I

Presiding: L. du Toit and A. Anderson

9:00 Late blight resistance in advanced potato lines. L.D. PORTER (1), D.A. Johnson (1), and D.A. Inglis (2). (1) Washington State University, Pullman, and (2) Washington State University, Mount Vernon

9:15 Red light therapy for management of seedling death caused by Phytophthora capsici. in pumpkin and tomato. S.Z. ISLAM (1), M. Babadoost (1), and Y. Honda (2). (1) University of Illinois, Urbana, and (2) Shimane University, Matsue, Japan

9:30 QTL mapping for resistance to gray leaf spot in perennial ryegrass. J. CURLEY (1), G. Jung (1), S. Warnkes (2), R. Barker (2), and S. Leong (1). (1) University of Wisconsin, Madison, and (2) USDA ARS, Oregon State University, Corvallis

9:45 RGAP markers for stripe rust resistance gene Yr5. G.P. Yan (1), X.M. CHEN (1,2), and R.F. Line (1). (1) Washington State University, Pullman, and (2) USDA ARS, Washington State University, Pullman

10:00 Discrimination of alfalfa populations for resistance to Aphanomyces euteiches using real-time fluorescent PCR. G.J. VANDEMARK (1) and M.A. Gritsenko (2). (1) USDA ARS, Prosser WA, and (2) Washington State University, Prosser

10:15 Inheritance of field response to soybean sudden death syndrome. R.Y. HASHMI, J.H. Klein, R.E. Whelan, C.A. Schmidt, and M.E. Schmidt. Southern Illinois University, Carbondale

10:30 RFLP markers associated with silk antibiotic compounds, husk coverage, and resistance to aflatoxin formation. B. GUO (1), A. Butrón (1), N.W. Widstrom (1), D.M. Wilson (2), M.E. Snook (2), and R.E. Lynch (1). (1) USDA ARS, Tifton GA, and (2) University of Georgia, Tifton

10:45 Cultivar selection and fungicide treatments for control of common smut of sweet corn. P.B. HAMM (1), G.H. Clough (1), M. Baune (1), and L. du Toit (2). (1) Oregon State University, Hermiston, and (2) Washington State University, Mt. Vernon WA

11:00 Stimulation of systemic resistance marker PR1a in tobacco by Oxycom. K.A. BLEE (1), K.Y. Yang (2) and A.J. Anderson (2). (1) California State University, Chico, and (2) Utah State University, Logan

11:15 Disease resistance through biotechnology: assessing benefits to U.S. growers. C.S. SILVERS and L.P. Gianessi. National Center for Food and Agricultural Policy, Washington DC

9 - 12:15 pm 250B
APS Oral Presentations
Biology of Plant Pathogens: Viruses II

Presiding: J. Brown and R. Charudattan

9:00 Spatial subdivision within plants, vector transmission, and cross protection facilitate genetic isolation in WSMV. D.C. STENGER (1), J.S. Hall (1), G.L. Hein (2), T.J. Morris (2), and R. French (1). (1) USDA ARS, Lincoln NE,and (2) University of Nebraska, Scottsbluff

9:15 Silent mutations in the P3 cistron of WSMV affect replication and movement. R. FRENCH, I.-R. Choi, and D.C. Stenger. USDA ARS and University of Nebraska, Lincoln

9:30 Production of the HIV-1 tat protein in plants using a virus-based vector system. A.V. KARASEV, B.V. Kim, K.J. Shon, and H. Koprowski. Thomas Jefferson University, Doylestown PA

9:45 Satellite DNAs associated with monopartite begomoviruses of malvaceous hosts in Sudan. A. M. IDRIS and J. K. Brown. University of Arizona, Tucson

10:00 Infectious clones of Cucurbit leaf curl virus and viable reassortants with squash leaf curl viruses. J.K. BROWN (1), A.M. Idris (1), C. Alteri (1), and D.C. Stenger (2). (1) University of Arizona, Tucson, and (2) USDA ARS, University of Nebraska, Lincoln

10:15 Identification of RCNMV movement protein domains involved in virus cell-to-cell movement, subcellular localization, and intermolecular complementation. D. TREMBLAY and S.A. Lommel. North Carolina State University, Raleigh

10:30 Intracellular distribution of the three virion-sense encoded proteins of Beet curly top virus. M.J. SOTO and R.L. Gilbertson. University of California, Davis

10:45 Systemic movement of 17K and CP mutants of PLRV In Nicotiana species. L. LEE (1), P. Palukaitis (2), and S.M. Gray (1). (1) Cornell University and USDA ARS, Ithaca, NY, and (2) Scottish Crop Research Institute, Invergowrie, Dundee, UK

11:00 Suppression by potato virus Y of posttranscriptional gene silencing mediated by red clover necrotic mosaic virus sequence. M.C. SOLOFOHARIVELO, Z. Weng, and Z. Xiong. University of Arizona, Tucson

11:15 Detection and relationships of two new badnaviruses from temperate berryfruit plants. A.T. JONES (1), W.J. McGavin (1), A. Geering (2), and B.E.L. Lockhart (3). (1) Scottish Crop Research Institute, Invergowrie, Dundee, UK; (2) Queensland Horticulture Institute, Indooroopilly, QLD, Australia, and (3) University of Minnesota, St. Paul

11:30 Host-specific accumulation of Tomato bushy stunt virus defective interfering RNAs. R.T. OMAROV (1), J.A.M. Rezende (2), and H. B. Scholthof (1). (1) Texas A&M University, College Station, and (2) University São Paulo, Piracicaba, Brazil

11:45 Host factors interacting with Tomato bushy stunt virus movement-associated proteins. S. FAURE, B. Desvoyes, R. Omarov, J.-W. Park, and H.B. Scholthof. Texas A&M University, College Station

12:00 Biological studies and molecular characterization of the High Plains Disease pathogen. J. MIRABILE, K-B. G. Scholthof, and H. B. Scholthof. Texas A&M University, College Station

9 am - 12:30 pm 251F
Professionalism/Outreach/Service
Mycotoxins: Achieving Food Security and Food Quality

Sponsor(s): APS Mycotoxicology Committee. Presiding: K. Cardwell, IITA, Benin, West Africa

9:00 Introduction: What are the issues? K. CARDWELL. IITA, Cotonou, Benin

9:05 The costs of mycotoxin management to the U.S.A. J. ROBENS. USDA, Beltsville MD

9:35 Potential impact of FDA fumonisin guidelines for corn in the U.S.A. G.P. MUNKVOLD. Iowa State University, Ames

10:05 Fusarium species and mycotoxins in Nepalese food grains: A case study of smallholder farms. A.E. DESJARDINS, G. Manandhar (2), H. K. Manandhar (2), R. D. Plattner (1), C. M. Maragos (1), K. Shrestha (2), and S. P. McCormick (1). (1) USDA ARS, Peoria IL, and (2) Nepal Agricultural Research Council, Khumaltar, Lalitpur, Nepal

10:35 Break

10:50 Regulatory standards and risk: Trade issue vs. protection of public health. S.H. HENRY, G. Wood, P.M Bolger, and T.C. Troxell. FDA, Washington DC

11:20 Child health and consumption of aflatoxin contaminated foods across agroecologies of West Africa. K. CARDWELL (1), A. Hounsa (1), S. Egal (1), C.P. Wild (2), A.J. Hall (3), Y.Y. Gong (2), and P.C. Turner (2). (1) International Institute of Tropical Agriculture; (2) University of Leeds, UK; and (3) London School of Hygiene and Tropical Medicine, London, UK

11:50 Open discussion

9 am - 12:30 pm Ballroom C
Molecular/Cellular-Plant-Microbe Interactions
Interactions Between Different Host Defense Pathways

Sponsor(s): APS Virology, Bacteriology, Physiology, and Molecular Biology Committees. Financial Sponsors: Monsanto, The Samuel Roberts Noble Foundation, Syngenta. Presiding: W. Gassmann and J. Schoelz, University of Missouri, Columbia

9:00 Introduction. W. GASSMANN. University of Missouri, Columbia

9:05 Resistance to Turnip crinkle virus: Understanding defense signaling against a viral pathogen of Arabidopsis. P. KACHROO (1,2), M. Cooley (2), H. Wu (1,2), S. Pathirana (2), K. Yoshioka (1,2), and D. Klessig (1,2). (1) Boyce Thompson Institute, Ithaca NY, and (2) State University of New Jersey, Piscataway NJ

9:40 Dissection of signaling networks triggering resistance to downy mildew in Arabidopsis. J.M. McDOWELL (1), T. Eulgem (2), J.L. Dang (2), and E.B. Holub (3). (1) Virginia Tech University, Blacksburg VA; (2) University of North Carolina, Chapel Hill; and (3) Horticulture Research International, Wellesbourne, UK

10:15 The role of coronatine, a Pseudomonas syringae phytotoxin, in virulence on plants. B.N. KUNKEL, D. Brooks, V. Joardar, and A. Kloek. Washington University, St. Louis MO

10:50 Break

11:05 Regulation of systemic acquired resistance by NPR1 and its partners. W.E. DURRANT, X. Li, Y. Zhang, W. Fan, M. Kinkema, J.D. Clarke, and X. Dong. Duke University, Durham, NC

11:40 Combining genetics and gene expression profiling for studies of signaling pathways controlling activation of plant defense responses. J. GLAZEBROOK, W. Chen, H.-S. Chang, G. Zou, B. Han, and T. Zhu. Torrey Mesa Research Institute, San Diego CA

9 am - 12:45 pm 250E
APS Oral Presentations
Diseases of Plants: Forest Pathology

Presiding: G. Adams and G. Stanosz

9:00 Ceratocystis albofundus, a wilt pathogen of Acacia mearnsii in Africa. J. ROUX, G. Nakabonge, I. Barnes, M.J. Wingfield and B.D. Wingfield. University of Pretoria, Pretoria, South Africa

9:15 Characterization of Sphaeropsis sapinea morphotypes using multiple gene genealogies and microsatellite markers. J. DE WET (1,2,3), T. Burgess (1,2), M.J. Wingfield (1,2) and B.D. Wingfield (1,2,3). (1) Forestry and Agricultural Biotechnology Institute; (2) Tree Pathology Co-operative Programme; and (3) University of Pretoria, Pretoria, South Africa

9:30 The association of a Longidorus spp. with stunted loblolly pine seedlings. S.W. FRAEDRICH and M.M. Cram. USDA Forest Service, Athens GA

9:45 Sycamore dieback research in Mississippi and Alabama. T.D. LEININGER (1), K.O. Britton (2), C.J. Chang (3), and N.M. Schiff (1). (1) USDA Forest Service, Stoneville, MS; (2) USDA Forest Service, Athens, GA; and (3) University of Georgia, Griffin

10:00 Etiology of red stain in living boxelder (Acer negundo). A.C. MORSE and R.A. Blanchette. University of Minnesota, St. Paul

10:15 Size and number of starch grains in root cells define health of loblolly and longleaf pines. C.H. WALKINSHAW and W.J. Otrosina. USDA Forest Service, Athens GA

10:30 Forest management and the occurrence of tree decay fungi. D. CZEDERPILTZ (1), H. Burdsall, Jr. (2), and G. Stanosz (1). (1) University of Wisconsin, Madison, and (2) USDA Forest Service, Madison WI

10:45 The potential for Pityophthorus setosus to provide infection courts for pitch canker on Pinus radiata. J.M. SAKAMOTO (1), T.R. Gordon (1), A.J. Storer (2), and D.L. Wood (2). (1) University of California, Davis, and (2) University of California, Berkeley

11:00 Pathogenicity of some fungi associated with Melaleuca quinquenervia in south Florida. M.B. RAYACHHETRY, T.K. Van, P.D. Pratt and T.D. Center. University of Florida, Fort Lauderdale

11:15 Genetic variability of Ophiostoma piliferum in Canada. L. BERNIER (1), G. Racine (1), É. St-Michel (1), S.H. Kim (2), and C. Breuil (2). (1) Université Laval, Québec, QC, Canada, and (2) University of British Columbia, Vancouver, BC, Canada

11:30 Distribution and spread of dogwood anthracnose and powdery mildew in Michigan forests. Z. BLANKENHEIM and G.C. Adams. Michigan State University, East Lansing

11:45 Koa dieback in Hawai’i. R.C. ANDERSON and D.E. Gardner. USGS, Honolulu HI

12:00 A new Phytophthora canker disease as the probable cause of sudden oak death in California. D.M. RIZZO (1), M. Garbelotto (2), J.M. Davidson (1), G.W. Slaughter (1) and S.T. Koike (3). (1) University of California, Davis; (2) University of California, Berkeley; and (3) University of California, Salinas

12:15 Preliminary studies on chemical and cultural control of Phytophthora associated with sudden oak death. M. GARBELOTTO (1) and D.M. Rizzo (2). (1) University of California, Berkeley, and (2) University of California, Davis

12:30 Detection, identification and quantification of Rhabdocline infection in symptomless foliage of Douglas fir. M. CATAL (1), G.C. Adams (1), and G.A. Chastagner (2). (1) Michigan State University, East Lansing, and (2) Washington State University, Puyallup

9 am - 1 pm Ballroom D
Molecular/Cellular-Plant-Microbe Interactions
Quorum Sensing in Plant-Associated Bacteria: Party Lines in the Rhizosphere-Are No Conversations Private?

Sponsor(s): APS Bacteriology Committee. Presiding: S. Von Bodman, University of Connecticut, Storrs

9:00 Introduction. S.K. FARRAND. University of Illinois, Urbana

9:05 TraR, the new paradigm: The role of the acyl-homoserine lactone signal in quorum-dependent transcriptional activation. S.K. FARRAND. University of Illinois, Urbana IL

9:35 A new mechanism involved in the control quorum sensing by Erwinia carotovora. M. WELCH, University of Cambridge, Cambridge, UK

10:05 Quorum sensing control of capsular polysacharide synthesis in Pantoe stewartii subsp. Stewartii-Not quite like the paradigm. S. VON BODMAN (1), T. Minogue (1), M. Wehland (2), and F. Bernhard (2). (1) University of Connecticut, Storrs, and (2) Freie Universität Berlin, Berlin, Germany

10:35 Break

10:45 Positive and negative communication among rhizobacteria: Effect on patterns of microbial gene expression. L.S. PIERSON III. University of Arizona, Tucson

11:15 Signal mimic compounds from plants can affect quorum sensing-regulated behaviors in associated bacteria. W.D. BAUER, M. Teplitski, and M. Gao. The Ohio State University, Columbus

11:45 Plants genetically modified to produce N-acylhomoserine lactones signal to bacteria. R.G. FRAY. Nottingham University, Loughborough UK

12:15 Quenching quorum sensing-dependent bacterial infection. L.-H. ZHANG. The National University of Singapore, Singapore

12:45 Final comments

9 am - 1 pm Ballroom B
Biology of Pathogens
Biology of Magnaporthe grisea on Turfgrass

Sponsor(s): APS Turfgrass Pathology Committee. Presiding: L. Datnoff, University of Florida, Belle Grade

9:00 Introduction and welcome. L. DATNOFF. University of Florida, Belle Grade

9:05 Gray leaf spot research: Recent advances and current challenges. W. UDDIN. Pennsylvania State University, University Park

9:35 Population structure and host specificity of Magnaporthe grisea causing gray leaf spot (blast) of perennial ryegrass. G. VIJI, W. Uddin, B. Wu, S. Kang, and D.R. Huff. Pennsylvania State University, University Park

10:05 Perennation of Magnaporthe grisea in the Midwest: Disease management implications. P. HARMON and R. Latin. Purdue University, West Lafayette IN

10:35 Break

10:50 The population biology of the rice blast pathogen Magnaporthe grisea in the United States. J. CORRELL and Y. Jia. University of Arkansas, Fayetteville, and USDA ARS, Stuttgart AR

11:20 Population genetics of Magnaporthe grisea and implications to gray leaf spot management. L. TREDWAY, K.L. Stevenson, and L.L. Burpee. University of Georgia, Athens

11:50 Breeding for gray leaf spot resistance. A. HAMBLIN and N.E. Hofmann. University of Illinois, Urbana

12:20 Best management practices for the control of gray leaf spot. B. CLARKE and S.S. Vaiciunas. Rutgers University, New Brunswick NJ

12:50 Discussion

9 am - 1 pm 150AB
Epidemiology/Ecology/Environmental Plant Pathology
Workshop: Statistical Epidemiology: Time Series Analysis

Sponsor(s): APS Epidemiology Committee. Presiding: N. Grunwald, Cornell University, Ithaca NY

9:00 Introduction. N. GRÜNWALD. Cornell University, Ithaca NY

9:15 Time series analysis. H. Scherm and L. Madden. University of Georgia, Athens, and Ohio State University, Wooster

The goals of the workshop are to acquaint participants with properties of time series and their statistical analysis. It will include the use of time series analysis for descriptive purposes, particularly for identifying patterns - trends, stationarity, autocorrelation, cyclic behavior - in time series data. The use of time series analysis for predictive purposes, particularly for modeling with Box-Jenkins models, will be demonstrated. More specialized topics, such as time series intervention analysis and spectral analysis, will be discussed briefly. Handouts, sample data sets, and demonstration programs will be made available via the worldwide web in July. Participants will need to bring their own computers with SAS/ETS software installed.

This is the second in a series of workshops entitled “Statistical Epidemiology,” structured to keep epidemiologists abreast of latest developments in the area of theoretical and statistical epidemiology. They are intended to be hands-on so that participants gain both an understanding of the theory underlying the workshop topic as well as the ability to apply the novel technique to their own research. This workshop is limited to 30 participants, on a first-come, first-served basis. See #13 on the registration form.

9:15 - 11:15 am 250A
MSA Contributed Presentations
Ecology and Pathology II

Presiding: J.J. Worrall, USDA Forest Service, Gunnison CO

9:15 Matter and antimatter - the clash between field mycology and the lab bench. S.A. REDHEAD. Agriculture & Agri-Food Canada, Ottawa, ON

9:30 Glycine betaine in fungi. M. BLACKWELL, D.J. Longstreth, C. David, and Barker. Louisiana State University, Baton Rouge

9:45 Yeasts from the gut of Coleoptera: taxonomic characteristics and molecular phylogeny. S.-O. SUH (1), J.V. McHugh (2), and M. Blackwell (1). (1) Louisiana State University, Baton Rouge, and (2) University of Georgia, Athens, GA

10:00 Ectomycorrhizal morphotypes of red spruce/Fraser fir and northern hardwood forests on Roan Mountain, NC/TN. C.E. BIRD and S.C. McCleneghan. Appalachian State University, Boone NC

10:15 Gliocephalis hyalina: An obligate parasite of Fusarium species. K. JACOBS, K.M. Holzman, and K.A. Seifert. Agriculture and Agri-Food Canada, Ottawa, ON

10:30 Armillaria root disease in campgrounds of southern Colorado. J.J. WORRALL (1), K. F. Sullivan (1), and T.C. Harrington (2). (1) USDA Forest Service, Gunnison CO, and (2) Iowa State University, Ames

10:45 Arctic-alpine agarics: new records from the Southern Rocky Mountains. C.L. CRIPPS and E. Horak (2). (1) Montana State University, Bozeman, MT, and (2) Geobotanic Institute ETH, Zurich, Switzerland

11:00 Trichomycetes from black flies in northwestern South Carolina are seasonal. C.E. BEARD, and P.H. Adler. Clemson University, Clemson SC

9:30 am - 12 pm Ballroom A
SON Symposium
Nematode Parasitism Genes

Sponsor(s): SON. Presiding: R.S. Hussey. University of Georgia, Athens

9:30 Introduction. R.S. HUSSEY. University of Georgia, Athens

9:35 Gene discovery in the soybean cyst nematode. E.L. DAVIS. North Carolina State University, Raleigh

10:05 Novel approach to the discovery of parasitism genes in the potato cyst nematode. G. SMANT (1), Q. Ling (1), P. Prins (1), A. Goverse (1), A. Schots (1), J.T. Jones (2), J. Helder (1), and J. Bakker (1). (1) Wageningen University and Research Centre, Wageningen, Netherlands, and (2) Scottish Crop Research Institute, Invergowrie, Dundee, UK

10:35 Break

10:50 Genome projects for human nematode parasites. S.A. WILLIAMS. Smith College, Northampton MA, and University of Massachusetts, Amherst

11:20 Applied genomics in nematode discovery: An industry perspective. L.X. LIU. Cambria Biosciences, Bedford MA

9:30 am - 12:30 pm 151G
Plant Disease Management
Economics of IPM versus Traditional Pest Control

Sponsor(s): APS Integrated Pest Management, Chemical Control, and Private Practice Committees. Presiding: L. Fougt, Bayer Corp., Winters CA, and G. Schuster, West Texas A&M University, Canyon

9:30 Introduction. L. FOUGHT. Bayer Corp., Winters CA

9:40 Why do cotton and grain sorghum growers use IPM? T.W. FUCHS. Texas A&M Research and Extension Center, San Angelo

10:05 IPM and economic comparisons for tomato growers. C. MELLINGER and G. Franz. Glades Crop Care, Inc., Jupiter, FL

10:30 IPM and economic comparisons for pecan growers. B. REE. Texas A&M Agricultural Extension Service, Bryan

10:55 Economics of technology-based citrus integrated crop management programs. R. MURARO and S. Rodgers. University of Florida, Lake Alfred, and ENTONET, Inc., Highland City FL

11:20 Break

11:40 Forum

1 - 5:45 pm 250A
MSA Contributed Presentations
Systematics and Evolution II

Presiding: P. Crous, University of Stellenbosch, South Africa

1:00 Redefining anamorph concepts in Mycosphaerella based on ITS rDNA sequence and morphology. P.W. CROUS, (1) J.-C. Kang (1), and U. Braun (2). (1) University of Stellenbosch, Stellenbosch, South Africa and (2) Martin-Luther University, Halle (Saale), Germany

1:15 Species concepts in Cylindrocladium based on sequence data, sexual compatibility and morphology. P.W. CROUS, J.-C. Kang, and C.L. Schoch. University of Stellenbosch, South Africa

1:30 Evolutionary switches between brown rotting saprophytes and ectomycorrhizal symbionts in the Boletales. M. BINDER, and D.S. Hibbett. Clark University, Worcester MA

1:45 Evolution of symbiotic associations within peltigerous lichens (Peltigerineae, Ascomycota). J. MIADLIKOWSKA and F. Lutzoni. Duke University, Durham, NC

2:00 Faster rates of nucleotide substitution observed in mutualistic fungi (Omphalina, lichenized Basidiomycetes) when compared to their symbiotic green algae (Coccomyxa). S. ZOLLER and F. Lutzoni. Duke University, Durham NC

2:15 Exploring the relationships of gut fungi (Harpellales) using ribosomal DNA. M.M. WHITE. University of Kansas, Lawrence

2:30 Annulatascaceae pruned. J. CAMPBELL and C.A. Shearer. University of Illinois, Urbana

2:45 Fungal rust DNA sequences demonstrate new relationships. B.D. WINGFIELD (1), L. Ericson (2), and J. Burdon (3). (1) University of Pretoria, Pretoria, South Africa, (2) Umea University, Sweden, and (3) CSIRO Plant Industry, Canberra, Australia

3:00 Break

3:15 Molecular examination of the Russula/Lactarius interface. S.L. MILLER (1), T. M. McClean (1), and B. Buyck (2). (1) University of Wyoming, Laramie, and (2) Museum National dHistoire naturelle, Paris, France

3:30 Reevaluating generic limits in Tilletiales. L.A. CASTLEBURY (1) and L.M. Carris (2). (1) USDA ARS, Beltsville MD, and (2) Washington State University, Pullman

3:45 Morphology and molecular phylogenetics of Cytospora species on Eucalyptus. G.C. ADAMS (1) and M.J. Wingfield (2). (1) Michigan State University, East Lansing, and (2) University of Pretoria, Pretoria, South Africa

4:00 Molecular phylogeny of the genus Russula in Europe with a comparison of modern infrageneric classifications. S.L. MILLER (1), T.M. McClean (1), and B. Buyck (2). (1) University of Wyoming, Laramie WY, and (2) Museum National dHistoire naturelle, Paris, France.

4:15 Genetic homogeneity in Aspergillus fumigatus. J.L. PLATT (1), D.M. Geiser (2), and J.W. Taylor (1). (1) University of California, Berkeley, and (2) Pennsylvania State University, University Park

4:30 Cryptic speciation in Gibberella fujikuroi mating population E. E.T. STEENKAMP (1), T.A. Coutinho (1), A.E. Desjardins (2), B.D. Wingfield (1), W.F.O. Marasas (3), and M.J. Wingfield (1). (1) University of Pretoria, Pretoria, South Africa; (2) USDA, Peoria, IL; and (3) PROMEC, Tygerberg, South Africa.

4:45 Genetic relationship among three genetically distinct groups of Typhula ishikariensis using tester monokaryons assays. Y. RANGEL and G. Jung. University of Wisconsin, Madison, WI

5:00 Phylogeny of the Southern Hemisphere Armillaria species. M. COETZEE, B.D. Wingfield, P. Bloomer, and M.J. Wingfield. Department of Genetics, Tree Pathology Co-operative Programme (TPCP), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa

5:15 Fitness and evolution of azole resistance in Saccharomyces cerevisiae. J.B. ANDERSON, L.E Cowen, and L. M. Kohn. University of Toronto, Toronto, ON, Canada

1:30 - 3:30 pm 250F
SON Oral Presentations
Ecology/Systematics/Behavior/Methods and Techniques

Presiding: H. Ferris and A. Szalanski

1:30 Nematode faunal profiles of soil ecosystems. H. FERRIS (1), T. Bongers (2), and R.G.M. de Goede (2). (1) University of California, Davis, and (2) Wageningen University, Wageningen, Netherlands

1:45 Analysis of nematode community structure. M.F. BERNEY and G.W. Bird. Michigan State University, East Lansing

2:00 Evaluation of turfgrass phytonematode population distributions on a New York State putting green. K.L. SNOVER and E.B. Nelson. Cornell University, Ithaca NY

2:15 Status of Campydora (Nematoda: Campydorina). P.G. MULLIN, A.L. Szalanski, T.S. Harris, and T.O. Powers. (1) University of Nebraska, Lincoln

2:30 A molecular phylogeny of selected Paratrichodorus and Trichodorus species. K. BOUTSIKA, V.C. Blok, M.S. Phillips, and D.J.F. Brown. Scottish Crop Research Institute, Invergowrie, Dundee, Scotland

2:45 Evaluation of Baermann funnel extraction for nematode community study. H. OKADA. Tohoku National Agricultural Experiment Station, Fukushima, Japan

3:00 Construction and preliminary screening of monoclonal antibodies prepared against Xiphinema index. Q. CHEN (1), R. Curtis (2), D.J.F. Brown (1), and J.T. Jones (1). (1) Scottish Crop Research Institute, Invergowrie, Dundee, Scotland, and (2) IACR Rothamsted, Harpenden, Herts., England

3:15 Mycoflorae in cysts, females and eggs of the soybean cyst nematode in Minnesota. F.J. Chen and S.Y. CHEN. University of Minnesota, Waseca

1:30 - 4 pm 250B
APS Oral Presentations
Plant Disease Management-Biological II

Presiding: D. Weller and M. Lyons

1:30 Nematode-trapping hyphomycetes as mycoparasites on sclerotia of Sclerotinia sclerotiorum in soil. S.D. LI, Y.H. Zhang, Z.Q. Miao, and X.Z. Liu. Chinese Academy of Agric Sciences, Beijing, China

1:45 Phenotypic, genetic and functional characterizing of Metchnikowia pulcherrima strains that control blue mold of apple. W.J. JANISIEWICZ (1), T.J. Tworkoski (1), and C.P. Kurtzman (2). (1) USDA ARS, Kearneysville WV, and (2) USDA ARS, Peoria IL

2:00 Crop preference by genotypes of 2,4-diacetylphloroglucinol (DAPG)-producing Pseudomonas spp. B.B. LANDA and D.M. Weller. USDA ARS, Washington State University, Pullman

2:15 Mechanisms of disease control in compost amended Pythium suppressive soil: Role of seed colonizing fatty acid metabolizing bacterial communities. M.E. MCKELLAR and E.B. Nelson. Cornell University, Ithaca NY

2:30 Interaction of citrus bacterial canker, citrus leaf miner and pest management. J. Belasquez (1), A. L. Parra (2), M.C.M. Chagas (2), C. Behe (3), A. J. Ayres (1), J. R.P. Parra (2), and J.S. HARTUNG. (1) FundeCitrus, Araraquara, SP, Brazil; (2) University of Sao Paulo, Piricicaba, SP, Brazil; and (3) USDA ARS, Beltsville MD

2:45 Burkholderia cepacia complex in soil from urban environments. S.M. MILLER (1), J.L. Parke (1), S. Bies (2), and J.J. LiPuma (2). (1) Oregon State University, Corvallis, and (2) University of Michigan, Ann Arbor

3:00 Stability of E. coli/Pseudomonas shuttle vectors in a biocontrol strain of Pseudomonas syringae. C.L. BASSETT and W. Janisiewicz. USDA ARS, Kearneysville WV

3:15 Efficacy of combinations of Pseudomonas aeruginosa and Armicarb for control of Sphaerotheca pannosa on rose. F. PONCE, K. Horst, and E. Nelson. Cornell University, Ithaca NY

3:30 Biological control of pink rot by Trichoderma atroviride. J.H. MCBEATH, P.A. Gay, and T. Yokogi. University of Alaska, Fairbanks

3:45 Combining Basamid, composts and Brassica amendments to control southern blight of tomato. M.T. LYONS and C.E. Sams. University of Tennessee, Knoxville

1:30 - 4 pm 250E
APS Oral Presentations
Molecular/Cellular Plant-Microbe Interactions II

Presiding: E.L. Davis and T. Mitchell

1:30 The calcineurin catalytic subunit, Ucn1, affects morphology, mating and pathogenicity in Ustilago maydis. J.D. EGAN and S.E. Gold. University of Georgia, Athens

1:45 Identification of NBS-LRR R-gene homologues in the physical region of the resistance gene Fom-2 in melon. T. JOOBEUR (1), S.J. Nolin (1), C.E. Thomas (2) and R.A. Dean (1). (1) North Carolina State University, Raleigh, and (2) USDA ARS, Charleston SC

2:00 Induction of proteins in Trichoderma atroviride in association with biological control of Botrytis cinerea, Phytophthora erythroseptica and Rhizoctonia solani. P.A. GAY, M. Cheng, and J.H. McBeath. University of Alaska, Fairbanks

2:15 Mechanisms of harpin-induced resistance against blue mold of apples. G. de CAPDEVILLE (1), S.V. Beer (1), C.L. Wilson (2), and J.R. Aist (1). (1) Cornell University, Ithaca NY, and (2) USDA-AFRS, Kearneysville WV

2:30 Host cell death and disease susceptibility. Y. YANG, M. Qi, and M.W. Lee. University of Arkansas, Fayetteville

2:45 Understanging molecular interaction mechanisms of the Pi-ta rice resistance gene and the rice blast pathogen. Y. JIA (1), J.C. Correll (2), F.N. Lee (2), G.C. Eizenga (1), Y. Yang (2), D.R. Gealy (1), B. Valent (3) and Q. Zhu (3). (1) USDA ARS, Stuttgart AR; (2) University of Arkansas, Stuttgart; and (3) DuPont, Wilmington DE

3:00 An Agrobacterium chromosomal gene involved in tumorigenesis encodes a homolog of a Rhizobium outer membrane protein. Y.H. Jia (1), L.P. Li (1), Q.M. Hou (1), and S.Q. PAN (1,2). (1) National University of Singapore, Singapore, and (2) China Agricultural University, Beijing, China

3:15 Expression and purification of soybean cyst nematode cellulases from Pichia pastoris. W. DU (1), D.M. Meyers (2), and E.L. Davis (1). (1) North Carolina State University, Raleigh, and (2) ICAgen Inc., Apex NC

3:30 Endoglucanase expression in plant-nematode interactions. M. GOELLNER, X. Wang and E.L. Davis. North Carolina State University, Raleigh

3:45 Role of bacterial biosurfactant as a virulence-enhancer in the decay of minimally processed vegetables. A. Hernandez, T. SUSLOW, L. Leloup, and C. Kado. University of California, Davis

1:30 - 5:15 pm 250C
APS Oral Presentations
Plant Disease Management: Chemical I

Presiding: R.M. Davis and P. McManus

1:30 Physiological and biochemical characterization Fusarium spp. associated with symptomatic orchids. D.E. WEDGE (1), P.F. Pace (2), and W.H. Elmer (3). (1) USDA ARS, University, MS; (2) AgroStat, Oxford, MS; and (3) Connecticut Agricultural Experiment Station, New Haven

1:45 Effect of calcium salts on postharvest cranberry fruit rot and fruit rot fungi. A.B. BLODGETT, R.W. Caldwell, and P.S. McManus. University of Wisconsin, Madison

2:00 Development of fungicide resistance by cobweb disease on mushrooms. D. M. BEYER and J.J. Kremser. Pennsylvania State University, University Park

2:15 The effects of Messenger, a harpin protein, on cotton development and reniform nematode. G.B. PADGETT (1), C. Overstreet (2), and J. Price (1). (1) Louisiana State University, Winnsboro, and (2) Louisiana State University, Baton Rouge

2:30 Efficacy of fungicides for Cercospora leaf spot control on sugarbeet. M.F.R. KHAN (1), L. Smith (2), and M. Bredehoeft (3). (1) North Dakota State University, Fargo; (2) Northwest Research and Outreach Center, Crookston, MN; and (3) Southern Minnesota Beet Sugar Cooperative, Renville

2:45 Physiological effects of strobilurins on wheat yield. E.-C. OERKE, C. Beck, and H.-W. Dehne. University of Bonn, Bonn, Germany

3:00 Break

3:15 Critical Aphanomyces soil index values for sowing hymexazol-treated sugar beet. C.E. Windels and J.R. BRANTNER. University of Minnesota, Crookston

3:30 Repeated soil application reduces mefanoxam activity against cavity spot of carrot. J.J. FARRAR (1) and R.M. Davis (2). (1) California State University, Fresno, and (2) University of California, Davis

3:45 Effect of continuous chemigation of mancozeb on residue levels and disease control in potato. J.S. MILLER (1), T.D. Miller (2), N.L. Olsen (1), S. Young (3), and J.A. Quinn (4). (1) University of Idaho, Aberdeen; (2) Miller Research, Inc., Rupert ID; (3) Desert View Farms; and (4) Rohm and Haas, Co., Spring House PA

4:00 Effects of azoxystrobin, tebuconazole and flutolanil on Aspergillus populations and aflatoxin formation in peanut. T.B. BRENNEMAN and D.M. Wilson. University of Georgia, Tifton

4:15 Terramaster: A new use fungicide for control of Pythium root rot in tobacco float-bed system. J.E. FAJARDO (1), R.C. Parker (1), W.A. Gutierrez (2), and T.A. Melton (2). (1) Crompton Corporation, Middlebury CT, and (2) North Carolina State University, Raleigh

4:30 Cuprofix Disperss: A new fungicide-bactericide tool for the protection of perennial and annual crops. P. W. ROBINSON (1), B. Sears (1), A. Estes (1), J. J. Heller (2), G. Joncheray (2), and C. Vergnet (2). (1) Cerexagri, Inc., King of Prussia PA, and (2) Cerexagri S.A., Plaisir, France

4:45 A review of the IR-4 methyl bromide alternatives program in strawberries. J. A. NORTON and D.C. Thompson. Rutgers University, New Brunswick, NJ

5:00 Comparison of fungicide spray programs for control of scab on peaches. E.J. SIKORA (1), J.A. Pitts (2), R. Boozer (1) and E.M. Bauske (3). (1) Auburn University, Auburn AL; (2) Chilton Area Hort. Station, Clanton AL; and (3) AWIS Weather Services, Auburn AL

1:30 - 5:30 pm Ballroom D
Plant Disease Management
Discussion: APS Affiliated Industry: A Look to the Past and Vision for the Future

Sponsor(s): APS Industry Committee. Presiding: E. Tedford, Syngenta Crop Protection, Basle, Switzerland

1:30 Introduction. E. TEDFORD. Syngenta Crop Protection, Basle, Switzerland

1:35 APS affiliated industry-A look to the past. B.J. JACOBSEN. Montana State University, Bozeman

2:00 Vision for the future-Worldwide crop protection. R. NYFELER. Syngenta Crop Protection Research, Basle, Switzerland

2:30 Vision for the future-Diagnostics. C. SUTULA. Agdia Inc., Elkhart IN

2:55 Break

3:10 Vision for the future-Project management. W.R. LANDIS. Landis and Associates, Valdosta GA

3:35 Vision for the future-Contract research. A. CHASE. Chase Research Gardens Inc., Mount Aukum CA

4:00 Vision for the future-Private consulting. L. STOWELL. Pace Turfgrass Research, San Diego CA

4:25 Vision for the future-Floriculture industry. A. BISHOP. Yoder Bros., Lancaster PA

4:50 Vision for the future-Flower and vegetable seed industry. R. MORRISON. Sakata Seeds, Salinas CA

5:15 Discussion

1:30 - 5:30 pm 150G
Joint APS/MSA-Molecular/Cellular-Plant-Microbe Interactions
Genomics of Plant Pathogens: Current Status

Sponsor(s): MSA, APS Genetics, Biochemistry, Physiology, and Molecular Biology Committees. Presiding: S.E. Gold, University of Georgia, Athens

1:30 Introduction. S. GOLD. University of Georgia, Athens

1:35 Blast off! Magnaporthe grisea genome project successfully launched. R.A. DEAN. North Carolina State University, Raleigh

2:05 Genomics of Clavibacter/Leifsonia xyli subsp. xyli, causal organism of ratoon stunting disease of sugarcane. S.M. BRUMBLEY (1), C.B.M. Vitorello (2), and L.E.A. Carmargo (2). (1) Bureau of Sugar Exp. Stations, Indooroopilly, Queensland, Australia, and (2) University of Sao Paulo, Piracicaba, SP, Brazil

2:35 Genomics-based approaches to control of fungal pathogens. J. MARGOLIS. Exelixis, Inc., South San Francisco CA

3:05 Break

3:25 Phytophthora genomics consortium. S.T. LAM. Syngenta, Research Triangle Park NC

3:55 Public funding of plant pathogen genomics. A. LICHENS-PARK. USDA, Washington DC

4:25 Genome-wide analysis of fungal pathogenicity. O.C. YODER and B.G. Turgeon. Torrey Mesa Research Institute, San Diego CA

4:55 Results from high throughput gene discovery in parasitic nematodes. J.P. McCARTER (1), D. Bird (2), S. Clifton (1), R. Waterston (1), and the GSC EST Lab Group (1). (1) Washington University, St. Louis MO, and (2) North Carolina State University, Raleigh

1:30 - 5:30 pm Ballroom B
Epidemiology/Ecology/Environmental Plant Pathology
Landscape Pathology: Toward Understanding Ecological Interactions of Forest Dwelling Microbes at the Landscape

Sponsor(s): APS Forest Pathology Committee. Presiding: J. Lundquist and G.I. McDonald, USDA Forest Service, Fort Collins CO and Moscow ID

1:30 Landscape Pathology: Defining a framework. J.E. LUNDQUIST (1) and G.I. McDonald (2). (1) USDA Forest Service, Fort Collins CO, and (2) USDA Forest Service, Moscow ID

1:40 Blister rust in white pine ecosystems: The imminent decline of western biodiversity. D. TOMBACK. University of Colorado, Denver

2:00 Human influences on pathogen dynamics in the Sierra Nevada and Sierra San Pedro Martir, Baja, Mexico. D. RIZZO. University of California, Davis

2:20 Interaction of various ecosystem components with prescribed fires in ponderosa pine stands in the southern Blue Mountains. W. THIES and C. Niwa. USDA Forest Service, Corvallis, OR

2:40 Spatial molecular analysis of forest decline epidemics. R. HAMELIN. Natural Resources Canada, Ste-Foy, Canada

3:00 Describing the spatial distribution of forest diseases. R.M. REICH. Colorado State University, Fort Collins

3:20 Break

3:30 Disturbance agents on the landscape of production forests. F. BAKER (1), K. Knowles (2), and Y. Beaubien (2). (1) Utah State University, Logan, and (2) Manitoba Conservation, Winnipeg, MB, Canada

3:50 Armillaria species in Ozark landscapes. J.N. BRUHN and J.D. Mihail. University of Missouri, Columbia

4:10 Application of molecular tools to understand landscape genetic architecture of conifers. M.-S. KIM, B.A. Richardson, N.B. Klopfenstein, G.I. McDonald, and S.J. Brunsfield. (1) University of Idaho, Moscow, and (2) USDA Forest Service, Moscow

4:30 Application of molecular tools to understand genecological aspects of the genus Armillaria. N.B. KLOPFENSTEIN (1), M.-S. Kim (2), G.I. McDonald (1), and B.A. Richardson (1,2). (1) USDA Forest Service, Moscow ID, and (2) University of Idaho, Moscow

4:50 Bringing it all together: Using remotely sensed data, local plot data, and GIS models to map ecosystems and their functions. G.I. MCDONALD (1), J.E. Lundquist (2), N.B. Klopfenstein (1), and M.-S. Kim (3). (1) USDA Forest Service, Moscow ID; (2) USDA Forest Service, Fort Collins CO; and (3) University of Idaho, Moscow

5:10 Discussion

1 - 4 pm Ballroom A
Joint APS/SON- Plant Disease Management
Spectacular Resistance Crashes: Accidents Waiting to Happen

Sponsor(s): APS Host Resistance and SON Plant Resistance to Nematodes Committees. Presiding: J.A. Thies, USDA ARS, Charleston SC

1:00 Introduction. J. THIES. USDA ARS, Charleston SC

1:05 Evolution of resistance breakdown and gene evolution: Soybean cyst nematode and rhg1. D.A. LIGHTFOOT (1), E. Ruben (1), K. Triwitakorn (1), J. Aziz (1), J. Afzal (1), K. Meksem (1), and P.R. Arelli (2). (1) Southern Illinois University, Carbondale, and (2) University of Missouri, Columbia

1:45 Strategies to avoid the boom-and-bust cycle. C.C. MUNDT. Oregon State University, Corvallis

2:25 Break

2:40 EPA and regulation of pesticide resistance management: Protection of Bt. S.R. MATTEN. US EPA, Washington DC

3:20 Breaking the treadmill: Emerging needs and resistance strategies for pearl millet. J.P. WILSON (1), R.P. Thakur (2), C.T. Hash (2), K.N. Rai (2), and C.R. Casela (3). (1) USDA ARS, Tifton, GA; (2) ICRISAT, Patancheru, India; and (3) EMBRAPA, Sete Lagoas, Brazil

2 - 5 pm 151A-C
MSA Symposium
Fungal Biodiversity

Sponsor(s): MSA Biodiversity Committee. Presiding: D. J. Lodge, USDA Forest Service, Luquillo PR

2:00 Introduction. D. J. LODGE. USDA Forest Service, Luquillo PR

2:05 Biodiversity of ascomycetes in freshwater habitats. C.A. SHEARER. University of Illinois, Urbana

2:35 A comparison of little slime molds in mesic forests of Hawai’I and the Smokies. F.W. SPIEGEL (1), J.D. Shadwick (1), and D.E. Hemmes (2). (1) University of Arkansas, Fayetteville, and (2) University of Hawaii, Hilo

3:05 Costa Rican National Fungal Inventory. G.M. MUELLER (1), M. Mata (2), L. Umana (2), S. Huhndorf (1), F. Fernandez (1), J. Carranza (3), and R.E. Halling (4). (1) Field Museum of Natural History, Chicago IL; (2) INBio, Santo Domingo de Heredia, Costa Rica; (3) University of Costa Rica, Costa Rica; and (4) Inst. of Systematic Botany, New York Botanical Garden, Bronx NY

3:35 Patterns in ectomycorrhizal community structure in pinaceous ecosystems. T.D. BRUNS (1), E.A. Lilleskov (1), M.I. Bidartondo (1), and T.R. Horton (2). (1) University of California, Berkeley, Oregon State University

4:05 Elevational trends in soil fungal biodiversity in an arid landscape. E. SOBEK and J.C. Zak. Texas Tech University, Lubbock

2:30 - 5 pm 251F
Diseases of Plants
Teach-In: Development and Application of Pest Risk Assessments

Sponsor(s): APS Regulatory Plant Pathology and Seed Pathology Committees. Presiding: E. Podleckis, USDA APHIS PPQ, Riverdale MD

2:30 An introduction to plant pest risk analysis. E.V. PODLECKIS. USDA APHIS PPQ, Riverdale MD

3:00 International standards and obligations for plant pest risk analysis. R.L. GRIFFIN. International Plant Protection Convention, Rome, Italy

3:30 The safeguarding review and its impact on plant pest risk assessment in USDA. D. ZADIG, California Dept of Food and Agriculture, Sacramento

4:00 A risk analysis model using the CABI database. D.C. MCGEE. Iowa State University, Ames

4:30 Climate analysis to predict range size of introduced species. R.C. VENETTE. University of Minnesota, St. Paul

2:30 - 5 pm Ballroom C
Joint APS/MSA-Biology of Pathogens
Soilborne and Fungal-transmitted Viruses

Sponsor(s): MSA, APS Virology Committee. Presiding: J. Verchot, Oklahoma State University, Stillwater

2:30 Introduction. J. VERCHOT. Oklahoma State University, Stillwater

2:35 Molecular and biochemical studies of the interaction between cucumber necrosis virus and zoospores of the fungal vector, Olpidium bornovanus. D. ROCHON (1), K. Kakani (2) and R. Reade(1). (1) Agriculture and Agri-Food Canada, Summerland, BC, and (2) University of British Columbia, Vancouver

3:00 Identification of a distinct Tombusvirus that causes disease of lettuce and tomato in the western United States. G.C. WISLER (1), C. Obermeier (2), J.L. Sears (1), H.Y. Liu (1), K.O. Sschleuter (1), E.J. Ryder (1), J.E. Duffus (1), and S.T. Koike (3). (1) USDA ARS, Salinas CA 93905; (2) Humboldt-Universität zu Berlin, Berlin, Germany; and (3) University of California, Salinas

3:25 Interactions between BNYVV and BSBMV in sugarbeet affect virus titer and beet development. W.M. WINTERMANTEL, G.C. Wisler, R.T. Lewellen, H.-Y. Liu, and J. Sears. USDA-ARS, Salinas, CA

3:50 Break

4:05 Soilborne wheat mosaic virus moves long distance through the xylem. J. VERCHOT, B.A. Driskel, Y. Zhu, and L.J. Littlefield. Oklahoma State University, Stillwater

4:30 Identification of genes involved in the transmission of viruses by plasmodiophorid vectors. M.J. ADAMS (1), J.F. Antoniw (1), and J.G.L. Mullins (2). (1) IACR-Rothamsted, Harpenden, UK and (2) University of Luton, Bedfordshire, UK

Sponsor(s): APS Plant Pathogen and Disease Detection, Bacteriology, Virology, and Mycology Committees. Presiding: L. Levy, USDA APHIS PPQ, Beltsville MD

1:00 Introduction. L. LEVY. USDA APHIS PPQ, Beltsville MD

1:05 The use of conserved DNA sequences in molecular taxonomy and detection of fungi. C.A. LEVESQUE. Agriculture and Agri-Food Canada, Ottawa, ON

1:40 Detection and identification of phytoplasmas using PCR primers derived from conserved and semi-conserved gene sequences. B. KIRKPATRICK and C.L. Blomquist. University of California, Davis

2:15 Molecular diagnostics of nematodes as part of the pest-pathogen complex in cropping system soils. J. CURRAN. CSIRO, Canberra, Australia

2:50 Break

3:05 PCR tests based on required, host-specific, pathogenicity genes. D. GABRIEL. University of Florida, Gainesville

3:40 Conserved nucleotide sequence-based applications for detection and differentiation of plant viruses. B. FALK, (1), T.Tian (1), H.-X. Lin (1), L. Rubio (2), and P.L. Guy (3). (1) University of California, Davis; (2) IVIA, Valencia, Spain; and (3) University of Otago