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2014 APS-CPS Joint Meeting Presentations

Presentations now available for purchase

The following presentations were recorded during the APS-CPS Joint Meeting in Minneapolis, MN, August 9-13, 2014. Registered attendees are able to sign in and view presentations at no additional charge. All website visitors can view the submitted abstracts.

Non-attendees can now purchase the presentations at the following price points. APS members receive the recordings for free one year after publish date.

Presentations are grouped by Session Title. To view the presentation titles use the image to expand/collapse.

14th I. E. Melhus Graduate Student Symposium: New Contributions to Epidemiology and Plant Health

New approaches to assess coast live oak resistance before infection by the invasive pathogen Phytophthora ramorum A. O. CONRAD (1), L. Rodriguez-Saona (1), B. McPherson (2), D. Wood (2), P. Bonello (1). (1) The Ohio State University, Columbus, OH, U.S.A.; (2) University of California, Berkeley, Berkeley, CA, U.S.A. View Abstract | View Presentation

Modes of seed infection by Clavibacter michiganensis subsp. michiganensis and population diversity in New York. M. A. TANCOS (1), C. D. Smart (1). (1) Cornell University, Geneva, NY, U.S.A. View Abstract | View Presentation

Staying one step ahead of a pathogen: Hop powdery mildew in the Pacific Northwest. S. WOLFENBARGER (1), M. C. Twomey (1), D. M. Gadoury (2), B. J. Knaus (3), N. J. Grunwald (4), D. H. Gent (5). (1) Oregon State University, Department of Botany and Plant Pathology, Corvallis, OR, U.S.A.; (2) Cornell University, Department of Plant Pathology and Plant-Microbe Biology, Geneva, NY, U.S.A.; (3) US Department of Agriculture-Agricultural Research Servi View Abstract | View Presentation

A Systems Approach for Microbe Management: From Food Safety to Plant Health

Critical role of practical research and extension in a systems approach to microbial food safety for the produce supply-chain T. V. SUSLOW (1), T. Suslow (1). (1) Univ of California, Davis, CA, U.S.A. View Abstract | View Presentation

A systems approach for managing Phytophthora diseases in horticultural nurseries. J. L. PARKE (1). (1) Oregon State University, Corvallis, OR, U.S.A. View Abstract | View Presentation

The Hazard Analysis Critical Control Point (HACCP) Approach S. ILIC (1). (1) The Ohio State University, Columbus, OH, U.S.A. View Abstract | View Presentation

Introduction: Why do we need systems approaches to manage plant diseases? N. J. GRUNWALD (1). (1) Oregon State University, Department of Botany and Plant Pathology, US Department of Agriculture-Agricultural Research Service, Horticultural Crop Research Unit, Corvallis , OR, U.S.A. View Abstract | View Presentation

A systems approach for producing greenhouse tomatoes free of human pathogens and plant pathogens. M. LEWIS IVEY (1), S. Ilic (2), F. Baysal-Gurel (3), J. T. LeJeune (4), S. A. Miller (4). (1) Agcenter, Louisiana State University, Baton Rouge, LA, U.S.A.; (2) The Ohio State University, Columbus, OH, U.S.A.; (3) The Ohio State Univ., Wooster, OH, U.S.A.; (4) The Ohio State University, Wooster, OH, U.S.A. View Abstract | View Presentation

An Expanding Virome of Cultivated Plants: Home-Grown or Imported?

Viruses of berry crops: Emerging, newly identified, and getting around. R. R. MARTIN (1). (1) USDA-ARS Horticultural Crops Research Unit, Corvallis, OR, U.S.A. View Abstract | View Presentation

Emergence, origins, and potential control points for new viruses affecting ornamental crops. J. HAMMOND (1). (1) USDA-ARS, USNA, Floral and Nursery Plants Research Unit, Beltsville, MD, U.S.A. View Abstract | View Presentation

With a little help from their 'friends': The worldwide emergence of geminiviruses R. GILBERTSON (1). (1) Department of Plant Pathology University of California-Davis, Davis, CA, U.S.A. View Abstract | View Presentation

Viroids: New and continuing risks to agriculture. R. W. HAMMOND (1). (1) USDA ARS MPPL, Beltsville, MD, U.S.A. View Abstract | View Presentation

Major virus diseases of Vitis, where they originated from? G. P. MARTELLI (1), G. P. Martelli (1). (1) University Aldo Moro, Bari, Bari, , Italy View Abstract | View Presentation

The origin and spread of viruses infecting vegetables and row crops-Lessons to be learned from past decades. W. MENZEL (1). (1) Leibniz Institute DSMZ - Plant Virus Department, Braunschweig, Germany View Abstract | View Presentation

Banned: Turfgrass Disease Control in the Age of Restrictive Pesticide Legislation

Alternatives ways for managing turfgrass diseases J. M. VARGAS (1). (1) Michigan State University, East lansing, MI, U.S.A. View Abstract | View Presentation

Canadian Pesticide Restrictions – A Cautionary History T. YAMADA (1). (1) IPM Council of Canada, Milton, ON, Canada View Abstract | View Presentation

Beyond Borlaug: How the Next Generation of Plant Pathologists are Advancing the Green Revolution

A window of opportunity: Summer tomato production in Bangladesh. A. I. HUERTA (1), C. H. Lin (2), S. Ahmad (3), U. M. Zahir (4), M. N. Uddin (5), B. Sazib (6), J. F. Wang (2). (1) University of Wisconsin, Madison, WI, U.S.A.; (2) AVRDC-The World Vegetable Center, Shanhua, Taiwan; (3) AVRDC-The World Vegetable Center, Dhaka, Bangladesh; (4) AVRDC-The World Vegetable Center, Jessore, Bangladesh; (5) Bangladesh Agricultural Resear View Abstract | View Presentation

Seeding a participatory soil and plant health program in Morogoro, Tanzania. A. L. TESTEN (1), D. P. Mamiro (2), E. R. Mbega (3), S. A. Miller (1). (1) The Ohio State University, Wooster, OH, U.S.A.; (2) Sokoine University of Agriculture, Morogoro, Tanzania; (3) Agricultural Research Institute Ilonga, Kilosa, Tanzania View Abstract | View Presentation

Agricultural Science Capacity Building in Afghanistan: Reading Agrios in Kabul T. C. CRESWELL (1). (1) Purdue University, West Lafayette, IN, U.S.A. View Abstract | View Presentation

Mountains beyond mountains: Challenges and opportunities for managing peanut diseases in Haiti. A. M. FULMER (1), R. C. Kemerait (2), T. B. Brenneman (2). (1) University of Georgia, Tifton , GA, U.S.A.; (2) University of Georgia, Tifton, GA, U.S.A. View Abstract | View Presentation

Capacity building of tomato farmers in Ghana: The case of IPM package. M. K. KWABENA OSEI (1), S. A. Miller (2), R. L. Gilbertson (3). (1) CSIR-Crops Research Institute, Kumasi, Ghana; (2) Ohio State University, Ohio, OH, U.S.A.; (3) UC Davis, California, Davis, CA, U.S.A. View Abstract | View Presentation

Biology of Pathogens

Association between brown marmorated stink bug (Halymorpha halys) injury and mycotoxin contamination in Virginia field corn H. L. MEHL (1), D. A. Herbert (1). (1) Virginia Tech Tidewater AREC, Suffolk, VA, U.S.A. View Abstract | View Presentation

Diversity of Aspergillusspecies causing aflatoxin contamination of maize and groundnuts in Zambia P. w. KACHAPULULA (1), R. Bandyopadhyay (2), J. Akello (3), M. Mukanga (4), P. J. Cotty (5). (1) Univ of Arizona, Tucson, AZ, U.S.A.; (2) IITA Nigeria, IBADAN, Nigeria; (3) IITA ZAMBIA, LUSAKA, Zambia; (4) Zambia Agricultural Research Institute, LUSAKA, Zambia; (5) Univ of Arizona/USDA-ARS, Tucson, AZ, U.S.A. View Abstract | View Presentation

An RNA-sequencing analysis implicates the presence of multiple cell-to-cell signaling pathways in the rice pathogenic bacterium Burkholderia glumae  J. H. HAM (1), R. Chen (1). (1) Dept. Plant Pathology and Crop Physiology, Louisiana State Univ Agric Ctr, Baton Rouge, LA, U.S.A. View Abstract | View Presentation

Cyclic di-GMP regulates biofilm formation in Erwinia amylovora through cellulose biosynthesis L. F. CASTIBLANCO (1), G. W. Sundin (2). (1) Michigan State Univ, East Lansing, MI, U.S.A.; (2) Michigan State University, East Lansing, MI, U.S.A. View Abstract | View Presentation

Response of Blueberry and Cranberry Fruit Rotting Fungi to Host Plant Floral Extracts  T. J. WALLER (1). (1) Rutgers University, Chatsworth, NJ, U.S.A. View Abstract | View Presentation

Seasonality of canker induction and expansion by Neofabraea perennans and Cryptosporiopsis kienholzii in apple trees C. AGUILAR (1), M. Mazzola (2), C. L. Xiao (3). (1) WSU Tree Fruit Research & Extension Center, Wenatchee, WA, U.S.A.; (2) USDA-ARS Tree Fruit Research Lab, Wenatchee, WA, U.S.A.; (3) USDA-ARS, Parlier, CA, U.S.A. View Abstract | View Presentation

Vertical profile of Plasmodiophora brassicae resting spores in mineral and muck soils T. J. CRANMER (1), B. D. Gossen (2), A. Deora (1), M. R. McDonald (1). (1) University of Guelph, Guelph, ON, Canada; (2) Agriculture and Agri-Food Canada, Saskatoon, SK, Canada View Abstract | View Presentation

Characterization of a regional population of Phytophthora nicotianae.  K. MCCORKLE (1), K. Ivors (1), D. Shew (1). (1) North Carolina State University, Raleigh, NC, U.S.A. View Abstract | View Presentation

Evolutionary relationships and displacements of historic and present day Phytophthora infestans A. Saville (1), M. D. Martin (2), M. T. Gilbert (2), J. B. RISTAINO (1). (1) North Carolina State University, Raleigh, NC, U.S.A.; (2) Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen,, Copenhagen K, Denmark., Denmark View Abstract | View Presentation

Compounds from Zoospore Exudate Serve as a Signal to Promote Zoosporic Germination and Infection of Phytophthora erythroseptica H. JIANG (1), J. Hao (1), K. D. Bishop (1). (1) University of Maine, Orono, ME, U.S.A. View Abstract | View Presentation

Evaluation of potential inhibitory peptides targeting the essential PhoP/Q two-component regulatory system in Xylella fastidiosa B. PIERCE (1), B. Kirkpatrick (1). (1) UC Davis, Davis, CA, U.S.A. View Abstract | View Presentation

Pyrosequencing analyses of endophytic bacterial populations in tomato leaves infected by ‘Candidatus Liberibacter solanacearum’ N. CLARK (1), T. L. Frigulti (1), J. Bushoven (2), Z. Zheng (3), C. Wallis (4), J. Chen (5). (1) California State University, Fresno, CA, U.S.A.; (2) California State Univerisity, Fresno, CA, U.S.A.; (3) South China Agricultural University, Guangzhou, China; (4) USDA-ARS, Parlier, CA, U.S.A.; (5) USDA ARS PWA, Parlier, CA, U.S.A. View Abstract | View Presentation

Two phases of root loss caused by citrus huanglongbing are independent of root growth E. G. JOHNSON (1), K. M. Gerberich (1), J. Wu (2), J. H. Graham (1). (1) University of Florida, Citrus Research and Education Center, Lake Alfred, FL, U.S.A.; (2) University of Florida, Lake Alfred, FL, U.S.A. View Abstract | View Presentation

Spatio-temporal spread of Grapevine leafroll disease in Washington vineyards B. P. DONDA (1), R. Naidu (1). (1) Washington State University, Prosser, WA, U.S.A. View Abstract | View Presentation

Tracking Raspberry bushy dwarf virus from pollen to systemic infection reveals RNA1 replicates in a resistant cultivar in the absence of RNA2 K. K. LANNING (1), P. P. Moore (1), R. R. Martin (2). (1) Washington State Univ, Puyallup, WA, U.S.A.; (2) USDA-ARS Horticulture Crops Research Unit, Corvallis, OR, U.S.A. View Abstract | View Presentation

Grapevine red blotch-associated virus is widespread in United States vineyards B. Krenz (1), J. R. Thompson (1), H. L. McLane (1), M. FUCHS (2), K. L. Perry (1). (1) Cornell University, Ithaca, NY, U.S.A.; (2) Cornell Univ, Geneva, NY, U.S.A. View Abstract | View Presentation

Boxwood Blight: Confronting an Emerging Disease Through Collaborative Connections

Boxwood blight and the dawn of a research collaboration. S. M. DOUGLAS (1), D. M. Benson (2), J. A. Crouch (3), N. L. Dart (4), M. L. Daughtrey (5), C. Hong (6), K. L. Ivors (2), J. A. LaMondia (7), R. E. Marra (1), C. L. Palmer (8), N. Shishkoff (9). (1) The Connecticut Agricultural Experiment Station, New Haven, CT, U.S.A.; (2) North Carolina State University, Raleigh, NC, U.S.A.; (3) USDA ARS, Systematic Mycology and Microbiology Laboratory, Beltsville, MD, U.S.A.; (4) Virginia Department of Agricul View Abstract | View Presentation

Survival and detection of the boxwood blight pathogen in soil. N. Dart (1), N. SHISHKOFF (2). (1) Virginia Department of Agriculture and Consumer Services,, Richmond , VA, U.S.A.; (2) FDWSRU/ARS/USDA, Frederick, MD, U.S.A. View Abstract | View Presentation

Kryptonite for boxwood blight: Management with fungicides and sanitizers. J. A. LAMONDIA (1), S. M. Douglas (2), K. L. Ivors (3), N. Shishkoff (4). (1) The Connecticut Agricultural Experiment Station, Windsor, CT, U.S.A.; (2) The Connecticut Agricultural Experiment Station, New Haven, CT, U.S.A.; (3) North Carolina State University, Raleigh, NC, U.S.A.; (4) USDA ARS FDWSRU, Frederick, MD, U.S.A. View Abstract | View Presentation

The show must go on: Boxwood and beyond. M. Ganci (1), D. M. Benson (1), J. A. LaMondia (2), K. IVORS (3). (1) North Carolina State Univ, Raleigh, NC, U.S.A.; (2) The Connecticut Agricultural Experiment Station, Windsor, CT, U.S.A.; (3) North Carolina State University, Raleigh, NC, U.S.A. View Abstract | View Presentation

Destructive Tree Diseases Associated with Ambrosia/Bark Beetles: Black Swan Events in Tree Pathology

Ambrosia and bark beetle-associated tree diseases: An overview. R. PLOETZ (1). (1) University of Florida, Homestead, FL, U.S.A. View Abstract | View Presentation

Rapid crown decline and mortality of hickory associated with numerous Ceratocystis smalleyi infections and mass attacks by the hickory bark beetle J. JUZWIK (1), J. H. Park (2). (1) U.S. Forest Service, St. Paul, MN, U.S.A.; (2) Korea Forest Research Institute, Seoul, South Korea View Abstract | View Presentation

New perspectives on thousand cankers disease of walnut M. T. KASSON (1), G. J. Griffin (2), D. M. Geiser (3), E. S. O"Neal (3), J. Juzwik (4), S. Reed (5), N. Tisserat (6), R. M. Turcotte (7), D. K. Martin (7), D. D. Davis (3), K. A. Fenstermacher (3), K. O'Donnell (8). (1) West Virginia University, Morgantown, WV, U.S.A.; (2) Virginia Tech, Blacksburg, VA, U.S.A.; (3) Pennsylvania State University, University Park, PA, U.S.A.; (4) USDA Forest Service, St. Paul, MN, U.S.A.; (5) University of Missouri, Columbia, MO, U.S.A View Abstract | View Presentation

Pine-specific beetle-fungus symbioses in Asia that have not yet invaded the US: empirical assessment of threat J. HULCR (1), C. Bateman (1), W. Bo (2). (1) University of Florida, Gainesville, FL, U.S.A.; (2) Chinese Academy of Sciences, Xishuangbanna, China View Abstract | View Presentation

Laurel wilt disease: An exceptional Black Swan event. J. A. SMITH (1), R. C. Ploetz (2), J. Hulcr (1), J. McCutcheon (3), T. J. Dreaden (1), M. A. Hughes (1), D. Spence (4), K. Shin (1), S. Inch (5), J. Ploetz (2), A. Campbell (6). (1) School of Forest Resources and Conservation, University of Florida, Gainesville, FL, U.S.A.; (2) Tropical Research and Education Center, University of Florida, Homestead, FL, U.S.A.; (3) University of Montana, MIssoula, MT, U.S.A.; (4) Florida Native View Abstract | View Presentation

Disease Control and Pest Management

Management of Phytophthora blight (Phytophthora capsici) of pepper in Illinois M. BABADOOST (1), C. Pavon (2), S. Z. Islam (3). (1) Univ of Illinois, Urbana, IL, U.S.A.; (2) University of Illinois, Urbana, IL, U.S.A.; (3) Syngenta Seeds, Inc., Naples, FL, U.S.A. View Abstract | View Presentation

Improving the health of vegetatively-propagated crops: better integration of disease management strategies for seed produced on-farm S. THOMAS-SHARMA (1), J. Andrade-Piedra (2), M. Carvajal Yepes (3), J. Hernandez Nopsa (1), P. Kromann (2), J. Legg (4), J. Yuen (5), G. Forbes (6), K. Garrett (1). (1) Kansas State University, Manhattan, KS, U.S.A.; (2) International Potato Center, Quito, Ecuador; (3) International Center for Tropical Agriculture, Cali, Colombia; (4) International Institute of Tropical Agriculture, Dar es Salaam, Tanzania; (5) Swedi View Abstract | View Presentation

Managing Bacterial wilt of Tomatoes in North Carolina through Grafting with Disease Resistant Rootstocks E. J. SILVERMAN (1), J. Driver (1), J. Kressin (1), F. Louws (1), D. Panthee (1). (1) North Carolina State Univ, Raleigh, NC, U.S.A. View Abstract | View Presentation

Management of bacterial wilt of tomato with a combination of grafting and a systemic acquired resistance inducer S. KUNWAR (1), M. L. Paret (2), J. B. Jones (1), L. Ritchie (2), J. H. Freeman (2), S. M. Olson (2). (1) Plant Pathology Department, University of Florida, Gainesville, FL, U.S.A.; (2) NFREC, University of Florida, Quincy, FL, U.S.A. View Abstract | View Presentation

Impact of white pine blister rust on resistant and previously immune cultivated Ribes and neighboring Eastern white pine in New Hampshire I. A. MUNCK (1), P. Tanguay (2), K. Lombard (3), J. Weimer (3), S. Villani (4), K. Cox (4). (1) USDA Forest Service, Durham, NH, U.S.A.; (2) Canadian Forest Service, Québec, QC, Canada; (3) New Hampshire Division of Forests and Lands, Concord, NH, U.S.A.; (4) Cornell University, Geneva, NY, U.S.A. View Abstract | View Presentation

In field resistance to asiatic citrus canker of Citrus spp. genotypes.  W. M. Nunes (1), S. A. Carvalho (2), J. Belasque (3), A. M. O. Gonçalves-Zuliani (1), M. A. Machado (4), J. Croce Filho (5), Z. Abdo (6), C. H. BOCK (7). (1) Universidade Estadual de Maringa, Maringa, Parana, Brazil; (2) Instituto Agronomico de Campinas, Cordeiropolis, Brazil; (3) Universidade de Sao Paulo, Piracicaba, SP, Brazil; (4) Instituto Agronomico de Campinas, Cordeiropolis, SP, Brazil; (5) Agencia View Abstract | View Presentation

Graft and psyllid transmissions indicate resistance to ‘CandidatusLiberibacter asiaticus’ is expressed in the citrus relative orange jasmine M. E. HILF (1), D. G. Hall (2). (1) USDA ARS USHRL, Ft Pierce, FL, U.S.A.; (2) USDA ARS USHRL, Fort Pierce, FL, U.S.A. View Abstract | View Presentation

Searching for sources of resistance to Verticillium wilt of olive in seedlings from the genus Olea C. TRAPERO (1), C. M. Diez (1), L. Rallo (1), F. J. López-Escudero (1), D. Barranco (1). (1) University of Cordoba, Cordoba, Spain View Abstract | View Presentation

Comparative Analysis of Populus trichocarpa Resistance to Melampsora spp. Leaf Rust Disease J. LA MANTIA (1), J. Klápště (1), Y. A. El-Kassaby (1), S. D. Mansfield (1), C. J. Douglas (1), R. C. Hamelin (2). (1) University of British Columbia, Vancouver, BC, Canada; (2) The University of British Columbia, Vancouver, BC, Canada View Abstract | View Presentation

Investigation into the mechanism of resistance to azoxystrobin in Cercospora sojina, the causal agent of frogeye leaf spot J. STANDISH (1), M. Tomaso-Peterson (1), T. W. Allen (2), S. Sabanadzovic (3), N. Aboughanem-Sabanadzovic (4). (1) Mississippi State Univ, Mississippi State, MS, U.S.A.; (2) Delta Research and Extension Center, Stoneville, MS, U.S.A.; (3) Mississippi State University, Mississippi State, MS, U.S.A.; (4) Institute for Genomics, Biocomputing & Biotechnology, Mississi View Abstract | View Presentation

Variation in the reaction of hard red winter wheat cultivars to common root rot and spot blotch N. GRAF GRACHET (1), R. M. Hunger (1), M. E. Payton (1), J. Edwards (1). (1) Oklahoma State Univ, Stillwater, OK, U.S.A. View Abstract | View Presentation

Can antagonistic fungi reduce the growth of Cryphonectria parasitica in dual culture? M. KOLP (1), A. M. Jarosz (1). (1) Michigan State University, East Lansing, MI, U.S.A. View Abstract | View Presentation

Baseline sensitivity of tangerine-infecting Alternaria alternata to boscalid and molecular characterization of the SDH complex B. VEGA (1), M. M. Dewdney (1). (1) University of Florida, Lake Alfred, FL, U.S.A. View Abstract | View Presentation

Trunk-injected potassium phosphites and acibenzolar-S-methyl induce SAR in apple trees allowing control of fire blight (Erwinia amylovora) S. G. AĆIMOVIĆ (1), Q. Zeng (1), G. C. McGhee (1), J. C. Wise (1), G. . Sundin (1). (1) Michigan State University, East Lansing, MI, U.S.A. View Abstract | View Presentation

Efficacy assessment of Demethylation Inhibitor (DMI) fungicides against Guignardia citricarpa, the causal agent of Citrus Black Spot (CBS) N. THAPA (1), M. M. Dewdney (1). (1) Citrus Research and Education Center, University of Florida, Lake Alfred, FL, U.S.A. View Abstract | View Presentation

Evaluation of oxathiapiprolin for management of downy mildew on sunflower R. HUMANN (1), K. Johnson (2), T. Gulya (3), S. Meyer (1), J. Jordahl (1), A. Friskop (1), M. Wunsch (4), S. Markell (1). (1) North Dakota State University, Fargo, ND, U.S.A.; (2) DuPont Field Development, Grand Forks, ND, U.S.A.; (3) USDA ARS, Fargo, ND, U.S.A.; (4) NDSU Carrington Research Extension Center, Carrington, ND, U.S.A. View Abstract | View Presentation

Spatial and temporal distribution of fungicides applied to creeping bentgrass K. R. HOCKEMEYER (1), R. X. Latin (1). (1) Purdue University, West Lafayette, IN, U.S.A. View Abstract | View Presentation

The effect of spirotetramat (Movento®) against reniform nematode, Rotylenchulus reniformis, on pineapple, Ananas comosus. P. WAISEN (1), B. Sipes (2). (1) pwaisen@hawaii.edu, Honolulu, HI, U.S.A.; (2) Univ of Hawaii At Manoa, Honolulu, HI, U.S.A. View Abstract | View Presentation

Response of Fusarium thapsinum to sorghum brown midrib lines and to phenolic metabolites D. L. FUNNELL-HARRIS (1), S. E. Sattler (2). (1) USDA ARS, Lincoln, NE, U.S.A.; (2) USDA-ARS, Lincoln, NE, U.S.A. View Abstract | View Presentation

Resistance the ultimate solution for bacterial panicle blight disease of rice  Y. WAMISHE (1), Y. Jia (2), M. Rasheed (1), C. Kelsey (3), S. Belmar (3), T. Gebremariam (1). (1) Univ of Arkansas Coop Ext Svc, Stuttgart, AR, U.S.A.; (2) USDA ARS, Stuttgart, AR, U.S.A.; (3) Univ of Arkansas, Stuttgart, AR, U.S.A. View Abstract | View Presentation

Breeding for root lesion nematode resistance in Montana winter wheat D. MAY (1), A. Dyer (1), P. Bruckner (1), J. Berg (1). (1) Montana State University - Bozeman, Bozeman, MT, U.S.A. View Abstract | View Presentation

Disease severity assessment in epidemiological studies: accuracy and reliability of visual estimates of Septoria leaf blotch (SLB) in winter wheat M. El Jarroudi (1), L. Kouadio (2), C. Mackels (1), B. Tychon (1), P. Delfosse (3), C. H. BOCK (4). (1) Univ of Liege, Arlon, Belgium; (2) Agriculture and Agri-Food Canada | Agriculture et Agroalimentaire Canada, Lethbridge, Alberta, Canada; (3) Centre de Recherche Public - Gabriel Lippmann, Belvaux, Luxembourg; (4) USDA-ARS-SEFTNRL, Byron, GA, U.S.A. View Abstract | View Presentation

Effect of glyphosate application on sudden death syndrome of soybean under different field conditions Y. R. KANDEL (1), C. A. Bradley (2), K. A. Wise (3), M. Chilvers (4), A. Tenuta (5), V. M. Davis (6), P. Esker (6), D. L. Smith (6), D. Mueller (7). (1) Iowa State University, Ames , IA, U.S.A.; (2) University of Illinois, Urbana, IL, U.S.A.; (3) Purdue University, West Lafayette, IN, U.S.A.; (4) Michigan State University, East Lansing , MI, U.S.A.; (5) Ontario Ministry of Agriculture and Food, Guelph View Abstract | View Presentation

Distribution, genetic diversity, and impact of fungicide resistant Cercospora sojina, the cause of frogeye leaf spot in soybean, in Tennessee H. KELLY (1), K. Lamour (2), W. J. Jordan (1), A. Cochran (1). (1) University of Tennessee, Jackson, TN, U.S.A.; (2) University of Tennessee, Knoxville, TN, U.S.A. View Abstract | View Presentation

Efficacy of Seed Treatments on Viability of Fusarium oxysporum f. sp. vasinfectum race 4 in Infected Cotton Seed. H. DOAN (1), R. M. Davis (2). (1) Univ of California, Davis, CA, U.S.A.; (2) University of California, Davis Department of Plant Pathology, Davis, CA, U.S.A. View Abstract | View Presentation

Field and laboratory evaluation of resistance to boxwood blight in Buxus cultivars M. GANCI (1), K. Ivors (2), D. M. Benson (1). (1) North Carolina State Univ, Raleigh, NC, U.S.A.; (2) North Carolina State University, Raleigh, NC, U.S.A. View Abstract | View Presentation

Resistance reaction of flax germplasm to fusarium wilt V. P. EDIRISINGHE (1), H. R. Kutcher (1), H. Booker (1), K. Y. Rashid (2), S. Cloutier (3), F. M. You (2). (1) University of Saskatchewan, Saskatoon, SK, Canada; (2) Agriculture & Agri-Food Canada, Morden, MB, Canada; (3) Agriculture & Agri-Food Canada, Ottawa, ON, Canada View Abstract | View Presentation

Suppression of late blight by resistant tomato cultivars M. T. MCGRATH (1). (1) Cornell Univ, Riverhead, NY, U.S.A. View Abstract | View Presentation

Effect of simultaneous water deficit stress and Meloidogyne incognita infection on cotton yield and fiber quality R. F. DAVIS (1), H. J. Earl (2), P. Timper (1). (1) USDA ARS, Tifton, GA, U.S.A.; (2) University of Guelph, Guelph, ON, Canada View Abstract | View Presentation

Grower perceptions of preventative practices for management of trunk diseases of grape K. BAUMGARTNER (1), R. Travadon (2), V. Hillis (2), J. Kaplan (3), M. Cooper (2), M. Lubell (2). (1) USDA ARS, Davis, CA, U.S.A.; (2) UC Davis, Davis, CA, U.S.A.; (3) California State University, Sacramento, Sacramento, CA, U.S.A. View Abstract | View Presentation

Wheat Curl Mite Populations under Deficit Irrigation A. R. SIMMONS (1), F. Worneh (2), S. O'Shaugnessy (3), S. Evett (3), C. M. Rush (4). (1) Texas A&M Agrilife, Amarillo, TX, U.S.A.; (2) Texas A&M Agrilife Research, Amarillo , TX, U.S.A.; (3) USDA-ARS, Bushland, TX, U.S.A.; (4) Texas A&M Agrilife Research, Amarillo, TX, U.S.A. View Abstract | View Presentation

Effect of anaerobic soil disinfestation and vermicompost on soilborne phytopathogenic agents under tree-crop nursery conditions S. STRAUSS (1), D. Kluepfel (2), G. Browne (3). (1) USDA ARS, Davis, CA, U.S.A.; (2) USDA-ARS CPGRU, Davis, CA, U.S.A.; (3) USDA-ARS, Davis, CA, U.S.A. View Abstract | View Presentation

Fungicide resistance phenotypes in Botrytis cinerea populations from blueberries in California and Washington S. SAITO (1), T. Michailides (2), C. L. Xiao (3). (1) USDA ARS, Parlier, CA, U.S.A.; (2) University of California-Davis, Parlier, CA, U.S.A.; (3) USDA Agricultural Research Service, Parlier, CA, U.S.A. View Abstract | View Presentation

Stability of boscalid resistance and fluopyram sensitivity of Corynespora cassiicola strains in commercial cucumber greenhouses H. ISHII (1). (1) Natl Inst for Agro-Environmental Sciences, Tsukuba, Japan View Abstract | View Presentation

High fungicide insensitivity and reciprocity of iprodione sensitivity in Botrytis cinerea populations from berry crops in the Pacific Northwest J. E. ADASKAVEG (1), H. Forster (1), C. Clemens (2), S. Midboe (3). (1) Univ of California, Riverside, CA, U.S.A.; (2) Syngenta Crop Protection, Richland, WA, U.S.A.; (3) Whatcom Farmers Coop, Bellingham, WA, U.S.A. View Abstract | View Presentation

Population structure and fungicide resistance profile of Botrytis spp. causing damping-off disease in stone- and pome fruit rootstock seedlings S. KONSTANTINOU (1), G. Sarmis (1), G. S. Karaoglanidis (2). (1) Aristotelian University of Thessaloniki, Faculty of Agriculture, Plant Pathology Laboratory, Thessaloniki, Greece; (2) Aristotelian Univ of Thessaloniki, Thessaloniki, Greece View Abstract | View Presentation

Root-knot Nematode Suppression in Tomato with Selected Organic Amendments in Comparison to Carbofuran O. K. ADEKUNLE (1), O. K. Adekunle (2). (1) Obafemi Awolowo University, Ile-Ife., Ile-Ife, Nigeria; (2) Department of Crop Production and Protection , Obafemi Awolowo University, Ile-Ife, Nigeria View Abstract | View Presentation

Development of a molecular marker to detect the Potato virus Y resistance gene Rychc in diploid populations of potato A. C. FULLADOLSA (1), S. H. Jansky (2), D. A. Halterman (3), A. O. Charkowski (1). (1) University of Wisconsin-Madison, Madison, WI, U.S.A.; (2) University of Wisconsin-Madison/USDA-ARS, Madison, WI, U.S.A.; (3) USDA-ARS, Madison, WI, U.S.A. View Abstract | View Presentation

Common bean lines with resistance to all known races of Uromyces appendiculatus and the strains of the BCMV, BCMNV, and BGYMV viruses M. A. PASTOR-CORRALES (1), J. A. Beaver (2), J. C. Rosas (3), T. G. Porch (4), G. Godoy-Lutz (5), E. Prophete (6). (1) USDA ARS, Beltsville, MD, U.S.A.; (2) University of Puerto Rico, San Juan, U.S.A.; (3) EAP/Zamorano, Tegucigalpa, Honduras; (4) USDA ARS SAA TARS, Mayaguez, U.S.A.; (5) University of Nebraska, Lincoln, NE, U.S.A.; (6) Service National Semencier, Port- View Abstract | View Presentation

Development of glasshouse bioassay for assessing resistance to verticillium wilt disease in potato V. N. DHARJONO (1), N. S. Crump (2), T. Wiechel (3), P. W. J. Taylor (1). (1) The University of Melbourne, Parkville, Australia; (2) ViCSPA, Toolangi, Australia; (3) Department of Environment and Primary Industries, Bundoora, Australia View Abstract | View Presentation

Phylogenetic analysis and association mapping for agronomic and quality traits in USDA pea PSP collection P. CHENG (1), W. Holdsworth (2), Y. Ma (1), M. Mazourek (2), M. Grusak (3), C. Coyne (1), R. McGee (1). (1) Washington State Univ, Pullman, WA, U.S.A.; (2) Cornell University, Ithaca, NY, U.S.A.; (3) USDA-ARS Children's Nutrition Research Center, Houston, TX, U.S.A. View Abstract | View Presentation

Variation in response among Pythium species and isolates to Streptomyces lydicus. J. WEILAND (1). (1) USDA ARS, Corvallis, OR, U.S.A. View Abstract | View Presentation

Use of Bacillus mycoides isolate J induced resistance in IPM programs B. J. JACOBSEN (1), S. C. Ockey (2), H. B. Highland (3), M. B. Dimock (4). (1) Montana State Univ, Bozeman, MT, U.S.A.; (2) Certis USA, Yakima, WA, U.S.A.; (3) Certis USA, Nokomis, FL, U.S.A.; (4) Certis USA, Columbia, MD, U.S.A. View Abstract | View Presentation

Antagonism of black rot Xanthomonas campestris pv. campestris in cabbage by mixtures of plant growth-promoting rhizobacteria (PGPR) strains K. LIU (1), C. Garrett (1), J. Kloepper (1). (1) Auburn University, Auburn, AL, U.S.A. View Abstract | View Presentation

Mutagenic strain development of Trichoderma harzianum to enhance antagonism against soil borne plant pathogens and its commercialization A. HANNAN (1), M. J. Saleem (2), S. T. Sahi (3), K. Riaz (1). (1) Univ of Agriculture Faisalabad, Faisalabad, Pakistan; (2) University of the Punjab Lahore Pakistan, Lahore, Pakistan; (3) University of Agriculture Faisalabad, Faisalabad, Pakistan View Abstract | View Presentation

Evaluation of Solanum sisymbriifolium as a Potential Host for Colletotrichum coccodes and Verticillium dahliae Z. A. FREDERICK (1), T. F. Cummings (2), D. A. Johnson (1). (1) Washington State University, Pullman, WA, U.S.A.; (2) Washington State University, Pullman, ND, U.S.A. View Abstract | View Presentation

Diseases of Plants

How many standard area diagram sets are needed for accurate disease severity assessment? C. H. BOCK (1), M. W. Hotchkiss (1), B. W. Wood (1). (1) USDA-ARS-SEFTNRL, 21 Dunbar Road, Byron, GA, U.S.A. View Abstract | View Presentation

VirFind: An Online Bioinformatics Tool for Plant Virus Detection and Discovery T. HO (1), I. E. Tzanetakis (1). (1) University of Arkansas, Fayetteville, AR, U.S.A. View Abstract | View Presentation

A loop-mediated isothermal amplification with bacterial enrichment assay for detection of Xanthomonas fragariae in strawberry H. WANG (1), W. Turechek (2). (1) Univ of Florida, Ft Pierce, FL, U.S.A.; (2) ARS-USDA, Fort Pierce, FL, U.S.A. View Abstract | View Presentation

Rapid isothermal detection and species-specific assay of Phytophthora in plant samples using recombinase polymerase amplification T. D. MILES (1), F. N. Martin (2), M. D. Coffey (3). (1) USDA/ARS, East Lansing, CA, U.S.A.; (2) USDA/ARS, Salinas, CA, U.S.A.; (3) University of California - Riverside, Riverside, CA, U.S.A. View Abstract | View Presentation

Use of nested PCR to detect Ceratocystis fagacearum in sapwood of diseased northern oak species A. YANG (1), J. Juzwik (2), D. Mollov (3). (1) Department of Plant Pathology, University of Minnesota, St. Paul, MN, U.S.A.; (2) Northern Research Station, US Forest Service, St. Paul, MN, U.S.A.; (3) National Germplasm Resources Laboratory, USDA ARS, Beltsville, MD, U.S.A. View Abstract | View Presentation

Spruce decline: Phomopsis spp. may be the main pathogen in the Lower Peninsula of Michigan C. K. MCTAVISH (1), D. W. Fulbright (2), A. M. Jarosz (2). (1) Michigan State University, Rochester, MN, U.S.A.; (2) Michigan State University, East Lansing, MI, U.S.A. View Abstract | View Presentation

Occurrence of different pathotypes of Synchytrium endobioticum in Europe, and detection by molecular methods G. C. VAN LEEUWEN (1), P. C. van Rijswick (2), B. T. van de Vossenberg (1), M. Westenberg (1). (1) NPPO the Netherlands, Wageningen , Netherlands; (2) NPPO the Netherlands, Wageningen, Netherlands View Abstract | View Presentation

Etiology of soybean root rot caused by Fusarium solani and its effect on root and above ground plant development F. J. SESSOMS (1), L. K. Otto-Hanson (2), J. Lencowski (2), D. K. Malvick (2), J. E. Kurle (2). (1) Department of Plant Pathology, College of Food, Agriculture, and Natural Sciences, University of Minnesota, St Paul, MN, U.S.A.; (2) Department of Plant Pathology, College of Food, Agriculture, and Natural Sciences, University of Minnesota, St. Paul, View Abstract | View Presentation

Incidence of Botrytis cinerea and Sclerotinia sclerotiorum in seed alfalfa fields of southern Alberta J. REICH (1), D. Johnson (1), S. Chatterton (2). (1) University of Lethbridge, Lethbridge, AB, Canada; (2) Agriculture and Agri-Food Canada, Lethbridge, AB, Canada View Abstract | View Presentation

Soybean Cultivars and Fungicide Responses to Frogeye Leaf Spot – Ten Years of Field Data W. J. JORDAN (1), H. M. Kelly (1), M. A. Newman (1). (1) University of Tennessee, Jackson, TN, U.S.A. View Abstract | View Presentation

Detection of Pseudoperonspora cubensis and P. humuli using 5’ nuclease probes, specific primers and high resolution melt curve analysis C. F. SUMMERS (1), D. H. Gent (2), C. D. Smart (1). (1) Cornell NYSEAS, Geneva, NY, U.S.A.; (2) USDA-ARS, Corvallis, OR, U.S.A. View Abstract | View Presentation

Etiology and management of stem rot diseases of Stevia A. KOEHLER (1), H. D. Shew (1). (1) North Carolina State University, Raleigh, NC, U.S.A. View Abstract | View Presentation

Black root rot of industrial chicory (Cichorium intybus L. var. sativum) in Chile caused by Boeremia exigua var. exigua. D. E. GRINBERGS (1), R. A. France (2). (1) INIA, Chillan, Chile; (2) INIA, Chillán, Chile View Abstract | View Presentation

Prevalence and fungal isolates associated with Korogwe leaf spot disease (KLS) of sisal O. G. MTUNG'E (1), L. Luo (1), X. Liu (1), R. B. Mabagala (2), Y. Diao (1), Y. Meng (1), J. Li (1). (1) China Agricultural University, Beijing, China; (2) Sokoine University of Agriculture, Morogoro, Tanzania View Abstract | View Presentation

Detection and identification of ‘Candidatus Phytoplasma asteris’-related phytoplasma associated with a witches’broom disease of cassava in Cambodia E. ALVAREZ (1), J. M. Pardo (2), M. J. Truke (2). (1) CIAT, Cali, Colombia; (2) CIAT, Palmira, Colombia View Abstract | View Presentation

Genetic diversity studies and molecular diagnostics of Cacao swollen shoot virus (CSSV) N. CHINGANDU (1), J. K. Brown (1). (1) University of Arizona, School of Plant Sciences, Tucson, AZ, U.S.A. View Abstract | View Presentation

Ecology and Epidemiology

Factors influencing Erysiphe necator ascocarp overwintering and ascospore release of in the Willamette Valley of Oregon L. THIESSEN (1), W. F. Mahaffee (2). (1) Oregon State Univ, Corvallis, OR, U.S.A.; (2) USDA ARS, Corvallis, OR, U.S.A. View Abstract | View Presentation

Detection of the downy mildew pathogens of spinach (Peronospora effusa) and beet (P. schachtii) using spore traps and quantitative PCR assays S. J. KLOSTERMAN (1), A. Anchieta (2), N. McRoberts (3), S. Koike (4), K. V. Subbarao (5), H. Voglmayr (6), Y. J. Choi (7), M. Thines (8), F. N. Martin (9). (1) USDA ARS, Salinas, CA, U.S.A.; (2) USDA, Salinas, CA, U.S.A.; (3) University of California, Davis, CA, U.S.A.; (4) University of California Cooperative Extension - Monterey County, Salinas, CA, U.S.A.; (5) Univ of California, Salinas, CA, U.S.A.; (6) View Abstract | View Presentation

Decaying leaf litter supports Phytophthora ramorum and endemic Phytophthora species in streams. K. ARAM (1), D. M. Rizzo (2). (1) Univ of California, Davis, CA, U.S.A.; (2) University of California, Davis, CA, U.S.A. View Abstract | View Presentation

Atmospheric variations of rust spore concentrations during sugarcane growing seasons in Florida P. C. ROTT (1), M. Kanaan (2), N. Glynn (3), W. G. Gibson (4), J. Haudenshield (5), M. Irey (6), C. LaBorde (7), R. Raid (1), J. Shine (8), J. C. Comstock (2). (1) University of Florida, Belle Glade, FL, U.S.A.; (2) USDA/ARS, Canal Point, FL, U.S.A.; (3) Syngenta Seeds Inc., Longmont, CO, U.S.A.; (4) BASF, Vero Beach, FL, U.S.A.; (5) USDA/ARS, Urbana, IL, U.S.A.; (6) United States Sugar Corporation, Clewiston, F View Abstract | View Presentation

Effects of two rice viruses on host preference and development of their vector and non-vector insects G. ZHOU (1), B. Ling (1), D. Xu (1), M. Zhang (1). (1) South China Agric Univ, Guangzhou, China View Abstract | View Presentation

Polymyxa graminis isolates from Australia: identification in wheat roots and soil, molecular characterization and wide genetic diversity  B. A. Cox (1), H. Luo (2), R. JONES (3). (1) University of Western Australia, Crawley, Australia; (2) Deaprartment of Agriculture and Food Western Australia, South Perth, Australia; (3) Univ of Western Australia, South Perth, WA, Australia View Abstract | View Presentation

Geographic variation in the mycangial mycoflora of Xyleborus glabratus in Florida A. S. CAMPBELL (1), R. C. Ploetz (1), P. E. Kendra (2), W. S. Montgomery (2). (1) University of Florida, Homestead, FL, U.S.A.; (2) Subtropical Horticulture Research Station, USDA-ARS, Miami, FL, U.S.A. View Abstract | View Presentation

Comparing populations of epiphytic bacteria in Pennsylvania’s organic and conventional stone fruit orchards as it relates to bacterial spot management S. BARDSLEY (1), M. d. Jimenez-Gasco (1). (1) Penn State Univ, University Park, PA, U.S.A. View Abstract | View Presentation

Multilocus analysis reveals phylogenetic placement of novel ERI fungi within Magnaporthaceae and Phaeosphaeriaceae of Ascomycota  P. L. VINES (1), M. Tomaso-Peterson (1), T. W. Allen (2), F. Hoffmann (1). (1) Mississippi State Univ, Mississippi State, MS, U.S.A.; (2) Delta Research and Extension Center, Stoneville, MS, U.S.A. View Abstract | View Presentation

Diversity of Diaporthe species causing wood-canker diseases of fruit and nuts crops in northern California D. LAWRENCE (1), R. Travadon (1), K. Baumgartner (2). (1) University of California-Davis, Davis, CA, U.S.A.; (2) USDA-ARS, Davis, CA, U.S.A. View Abstract | View Presentation

Genetic characterization of Aspergillus flavus soil populations in Kenya using simple sequence repeat (SSR) markers M. S. ISLAM (1), K. A. Callicott (1), K. T. Meyers (2), R. Bandyopadhyay (3), C. Mutegi (4), P. J. Cotty (1). (1) USDA-ARS, Tucson, AZ, U.S.A.; (2) School of Plant Sciences, The University of Arizona, Tucson, AZ, U.S.A.; (3) International Institute of Tropical Agriculture, Ibadan, Nigeria; (4) International Institute of Tropical Agriculture, Nairobi, Kenya View Abstract | View Presentation

Global population genetics of the wheat leaf rust fungus Puccinia triticina J. KOLMER (1), M. Ordonez (2). (1) USDA ARS, St Paul, MN, U.S.A.; (2) Pontifical University Catholica, Quito, Ecuador View Abstract | View Presentation

Networks of stored wheat: towards improving sampling and management strategies in the United States and Australia J. F. HERNANDEZ NOPSA (1), G. Daglish (2), D. Hagstrum (3), J. Leslie (4), T. Phillips (3), C. Scoglio (5), S. Thomas-Sharma (4), G. Walter (6), K. Garrett (7). (1) Kansas State University and Plant Biosecurity Cooperative Research Centre (CRC), Canberra, Australia, Manhattan, KS, U.S.A.; (2) Department of Agriculture, Fisheries and Forestry, Agri-Science Queensland, Australia, and Plant Biosecurity Cooperative R View Abstract | View Presentation

Race structure characterization and genetic diversity analysis of Puccinia striiformis f. sp. tritici in Saskatchewan G. S. Brar (1), G. S. BRAR (1), R. Kutcher (1), Y. B. Fu (2). (1) University of Saskatchewan, Saskatoon, SK, Canada; (2) Plant Gene Resources of Canada, Agriculture and Agri-Food Canada, Saskatoon Research Centre, Saskatoon, SK, Canada View Abstract | View Presentation

Regional differences in genetic structure of Puccinia striiformis f. sp. tritici, the wheat stripe rust pathogen, in the U.S. revealed by SSR makers A. WAN (1), M. Wang (1), X. Chen (2). (1) Washington State University, Pullman, WA, U.S.A.; (2) USDA ARS, Pullman, WA, U.S.A. View Abstract | View Presentation

Effects of Climate Change on the Components of Wheat Leaf Rust Disease on Winter Wheat. A. M. MASHAHEET (1), D. S. Marshall (2), K. O. Burkey (2). (1) North Carolina State Univ, Raleigh, NC, U.S.A.; (2) North Carolina State University, Raleigh, NC, U.S.A. View Abstract | View Presentation

An agro-climatic approach to determine citrus postbloom fruit drop risk in the São Paulo State, Brazil A. R. S. COLLETTI (1), P. C. Sentelhas (1). (1) University of São Paulo, Piracicaba, Brazil View Abstract | View Presentation

Evaluation of a quantitative (q)PCR assay as the basis for a stem rot of canola (Sclerotinia sclerotiorum) risk assessment tool B. R. ZIESMAN (1), T. K. Turkington (2), U. Basu (1), E. J. deMilliano (3), S. E. Strelkov (1). (1) University of Alberta, Edmonton, AB, Canada; (2) Agriculture and Agri-Food Canada, Lacombe, AB, Canada; (3) Crop Production Services, Fort Saskatchewan, AB, Canada View Abstract | View Presentation

Effect of Temperature and Wetness Duration on Anthracnose Fruit Rot Development on Different Strawberry Cultivars B. B. FORCELINI (1), N. Peres (2). (1) University of Florida, Wimauma, FL, U.S.A.; (2) University of Florida, Gulf Coast Research and Education Center, Wimauma, FL, U.S.A. View Abstract | View Presentation

Comparison of sampling methods for incidence of fungicide resistance. O. CARISSE (1). (1) Agric & Agri-Food Canada, St-Jean-sur-Richelieu, QC, Canada View Abstract | View Presentation

Finding an optimal spatial scale for citrus health management in California W. LUO (1), T. R. Gottwald (2). (1) Center for Integrated Pest Management, Raleigh, NC, U.S.A.; (2) USDA ARS, Fort Pierce, FL, U.S.A. View Abstract | View Presentation

EPA's Endocrine Disruptor Screening Program and Its Relationship to Plant Protection Products

Industry perspective. B. CARROLL (1). (1) -, Greensboro, NC, U.S.A. View Abstract | View Presentation

The Endocrine Disruptor Screening Program and a Potential Relationship to Future Plant Disease Control Efforts P. M. BRANNEN (1), L. A. Fall (2). (1) University of Georgia, Athens, GA, U.S.A.; (2) University of Georgia, Byron, GA, U.S.A. View Abstract | View Presentation

Extension Yesterday, Today, and Tomorrow

History of extension and land-grant universities.  M. F. KHAN (1). (1) North Dakota State University & University of Minnesota, Fargo, ND, U.S.A. View Abstract | View Presentation

Extension today: Challenges of keeping extension relevant. B. R. Durgan (1), B. R. DURGAN (1). (1) University of Minnesota, Saint Paul, MN, U.S.A. View Abstract | View Presentation

Future of extension: Challenges and opportunities. H. R. DILLARD (1). (1) University of California, Davis, CA, U.S.A. View Abstract | View Presentation

Challenges of funding an evolving extension service. M. A. DRAPER (1). (1) USDA-NIFA, Washington, DC, U.S.A. View Abstract | View Presentation

Education of future extensionists and clientele. S. A. MILLER (1). (1) The Ohio State University, Wooster, OH, U.S.A. View Abstract | View Presentation

Frontiers in Biosynthesis and Management of Mycotoxins

Genetics and next-generation sequencing in identifying marker for aflatoxin resistance in maize. M. L. WARBURTON (1), W. P. Williams (1), G. Windham (1), S. Murray (2), W. Xu (2), A. Perkins (3), J. Tang (1), L. Hawkins (1). (1) USDA ARS CHPRRU, Mississippi State, MS, U.S.A.; (2) Dept. Soil and Crop Sciences TAMU, College Station, TX, U.S.A.; (3) Computer Science and Engineering Mississippi State University, Mississippi State, MS, U.S.A. View Abstract | View Presentation

From one to many: Effective aflatoxin management in farmers' fields in West and East Africa R. BANDYOPADHYAY (1), P. J. Cotty (2), J. Atehnkeng (1), S. E. Bonkoungou (3), K. A. Callicott (2), R. Jaime-Garcia (4), C. K. Mutegi (5), C. Probst (6), L. Senghor (7). (1) International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria; (2) USDA/ARS, School of Plant Sciences, University of Arizona, Tucson, AZ, U.S.A.; (3) INERA, Bobo-Dioulasso, Burkina faso; (4) University of Arizona, School of Plant Sciences, T View Abstract | View Presentation

Insights into the evolution of mycotoxin biosynthesis in the fungus Fusarium R. H. PROCTOR (1), T. Lee (2), M. T. Amatulli (3), S. P. McCormick (3), D. W. Brown (3), M. Busman (3), C. Maragos (3), T. J. Ward (3). (1) USDA ARS MWA NCAUR, Peoria, IL, U.S.A.; (2) National Academy of Agricultural Science, Rural Development Administration, Suwon, Korea; (3) USDA ARS NCAUR, Peoria, IL, U.S.A. View Abstract | View Presentation

Role of plant elicitor peptides and phytoalexins in enhancing maize resistance to Aspergillus flavus infection. A. HUFFAKER (1), J. Sims (1), S. Christensen (1), E. A. Schmelz (1). (1) USDA-ARS CMAVE, Gainesville, FL, U.S.A. View Abstract | View Presentation

Funding Opportunities for Cooperative International Research

International Programs and Opportunities at NIFA K. F. Cardwell (1), K. F. CARDWELL (2). (1) National Institute of Food and Agriculture, Washington, DC, U.S.A.; (2) USDA, NIFA, Washington, DC, U.S.A. View Abstract | View Presentation

USAID Fellowship Programs. C. K. COHEN (1). (1) US Agency for International Development, Washington, DC, U.S.A. View Abstract | View Presentation

Innovative Approaches to Control Difficult Bacterial Pathogens

Precise engineering of plant genomes with sequence-specific nucleases. D. F. VOYTAS (1). (1) University of Minnesota, St. Paul, MN, U.S.A. View Abstract | View Presentation

Interconnected Lifecycles: Multitrophic Interactions Between Plants, Pathogens, and Insects

Interconnected Lifecycles: Multitrophic interactions between plants, pathogens, and insects D. ROTENBERG (1). (1) Kansas State University, Dept Plant Pathology, Manhattan, KS, U.S.A. View Abstract | View Presentation

Characterizing the interaction between salt-stressed soybeans, viral infection, and vector performance. A. G. LANEY (1), K. L. Korth (1). (1) University of Arkansas, Fayetteville, AR, U.S.A. View Abstract | View Presentation

Insect vectors are attracted to sub-optimal pathogen-infected plants; Can environment be manipulated to prevent vectors from finding infected trees? L. L. STELINSKI (1). (1) University of Florida, Lake Alfred, FL, U.S.A. View Abstract | View Presentation

A tale of how phytoplasma effectors alter plant-pathogen-insect interactions: It's a mad MADS world. A. M. MACLEAN (1), Z. Orlovskis (1), A. Sugio (1), H. Kingdom Gibbard (1), S. A. Hogenhout (1). (1) John Innes Centre, Norwich, United Kingdom View Abstract | View Presentation

Molecular/Cellular/Plant-Microbe Interactions

A Host-Pathogen Interaction Paradigm: Is Leptosphaeria maculans’s New Races Adopting Rapidly to Canadian Canola in Western Canada? D. FERNANDO (1), S. Liban (2), X. Zhang (2), G. Peng (3), D. Cross (4). (1) Univ of Manitoba, Winnipeg, MB, Canada; (2) University of Manitoba, Winnipeg, MB, Canada; (3) Agriculture and Agri-Food Canada, Saskatoon, Saskatoon, SK, Canada; (4) Agriculture and Agri-Food Canada, Melfort, Melfort, SK, Canada View Abstract | View Presentation

Fighting back against blackleg: Utilization of high throughput RNA-seq to characterize the blackleg-canola pathosystem M. G. BECKER (1), I. J. Girard (2), T. de Kievit (2), D. Fernando (2), M. F. Belmonte (2). (1) University of Manitoba, Ile Des Chenes, MB, Canada; (2) University of Manitoba, Winnipeg, MB, Canada View Abstract | View Presentation

RNAseq and histological analysis of the canola – Sclerotinia pathosystem s. MAO (1), M. F. Belmonte (1), D. Fernando (1), T. De Kievit (1). (1) University of Manitoba, Winnipeg, MB, Canada View Abstract | View Presentation

Bull’s-eye: tissue processing improvements for isolating high quality RNA from laser microdissected pathogen infected cells and tissues I. J. GIRARD (1), D. Fernando (1), M. G. Becker (1), M. F. Belmonte (1). (1) University of Manitoba, Winnipeg, MB, Canada View Abstract | View Presentation

Mechanisms of drought-induced susceptibility of Austrian pine to Diplodia pinea P. SHERWOOD (1), C. Villari (1), P. Capretti (2), P. Bonello (1). (1) The Ohio State Univ, Columbus, OH, U.S.A.; (2) Università degli Studi di Firenze, Firenze, Italy View Abstract | View Presentation

Infection and colonisation of pyrethrum leaves by Stagonosporopsis tanaceti M. A. H. BHUIYAN (1), T. Groom (2), P. W. J. Taylor (1). (1) The University of Melbourne, Melbourne, Australia; (2) Botanical Resources Australia Pty Ltd, Tasmania, Australia View Abstract | View Presentation

Transcription factor Zfp1 required for full pathogenesis in Ustilago maydis. H. K. Cheung (1), K. L. Spence (1), B. J. SAVILLE (2). (1) Trent University, Peterborough, ON, Canada; (2) Trent University, Ennismore, ON, Canada View Abstract | View Presentation

Using comparative genomics to develop a new model of understanding Verticillium wilt resistance in potato. A. MEIER (1), D. Halterman (2). (1) University of Wisconsin, Madison, Madison, WI, U.S.A.; (2) USDA/ARS, Madison, WI, U.S.A. View Abstract | View Presentation

Function, evolution, and interaction of the coupled genes responsible for the Pik-h encoded blast resistance of rice Q. PAN (1), C. Zhai (1), W. Wu (1), Y. Zhang (1), L. Wang (1). (1) South China Agricultural University, Guangzhou, China View Abstract | View Presentation

Whole genome sequencing and comparative genomics of multiple F. graminearum isolates S. WALKOWIAK (1), R. Subramaniam (2), L. Wang (2), O. Rowland (1). (1) Carleton University, Ottawa, ON, Canada; (2) Agriculture and Agri-Food Canada, Ottawa, ON, Canada View Abstract | View Presentation

Detecting the grapevine wood-canker pathogen Neofusicoccum parvum (Botryosphaeria dieback) based on host markers of infection E. R. GALARNEAU (1), S. Czemmel (2), R. Travadon (3), G. Cramer (2), A. J. McElrone (1), K. Baumgartner (1). (1) USDA-ARS CPGRU Davis, Davis, CA, U.S.A.; (2) University of Nevada-Reno, Reno, NV, U.S.A.; (3) University of California-Davis, Davis, CA, U.S.A. View Abstract | View Presentation

The impact of tissue type, growth stage and fertilizers on the community structure of cultured bacterial wheat endophytes in the Broadbalk experiment R. R. ROBINSON (1), B. A. Fraaije (1), I. M. Clark (1), R. W. Jackson (2), P. R. Hirsch (1), T. H. Mauchline (1). (1) Rothamsted Research, Harpenden, United Kingdom; (2) University of Reading, Reading, United Kingdom View Abstract | View Presentation

Chemical inducers of systemic acquired resistance in plants M. H. EL-SHETEHY (1), C. Wang (2), S. Baby (1), K. Yu (1), A. Kachroo (1), P. Kachroo (1). (1) University of Kentucky, Lexington, KY, U.S.A.; (2) College of Agronomy and Plant Protection, Key Lab of Integrated Crop Pest Management of Shandong Province, Qingdao Agricultural University, 700 Changcheng Road, Qingdao 266109, China, Qingdao, China View Abstract | View Presentation

Comparative genomics of Ralstonia solanacearum strain P781 that infects Mandevilla and Dipladenia plants A. M. BOCSANCZY (1), J. M. F. Yuen (2), A. J. Palmateer (3), D. J. Norman (1). (1) Univ of Florida Mid-Florida Research and Education Center, Apopka, FL, U.S.A.; (2) University of Florida Mid-Florida Research and Education Center, Apopka, FL, U.S.A.; (3) University of Florida Tropical research and Education Center, Homestead, FL, U. View Abstract | View Presentation

Characterization of host resistance and Asian soybean rust (ASR) pathogen variability for durable resistance P. TIAN (1), S. Smith (1). (1) Univ of Georgia, Athens, GA, U.S.A. View Abstract | View Presentation

Comparative analysis of differential gene expression in response to rust pathogens J. BRIGGS (1), J. Garbe (1), M. Rouse (2), J. Kurle (1). (1) University of Minnesota-Twin Cities, St. Paul, MN, U.S.A.; (2) USDA-ARS, St. Paul, MN, U.S.A. View Abstract | View Presentation

Differential proteomic profiles of sugarbeet resistance genes Rz1 and Rz2 during interactions with Beet necrotic yellow vein virus K. M. WEBB (1), W. M. Wintermantel (2), L. Hldaky (2), P. Covey (1), C. J. Broccardo (3), J. E. Prenni (3). (1) USDA ARS NPA SBRU, Fort Collins, CO, U.S.A.; (2) USDA ARS CIPRU, Salinas, CA, U.S.A.; (3) Colorado State University, Fort Collins, CO, U.S.A. View Abstract | View Presentation

The link between RNA structure, factor requirement and plant viral resistance. J. Zhang (1), R. Roberts (1), L. Mayberry (2), S. Tatineni (3), K. Browning (2), A. RAKOTONDRAFARA (4). (1) University of Wisconsin-Madison, Madison, WI, U.S.A.; (2) University of Texas-Austin, Austin, TX, U.S.A.; (3) University of Nebraska-Lincoln, Lincoln, NE, U.S.A.; (4) University of Wisconsin - Madison, Madison, WI, U.S.A. View Abstract | View Presentation

Potatoes tolerant of ‘Candidatus Liberibacter solanacearum’ infection do not undergo changes in tuber physiology associated with zebra chip disease C. WALLIS (1), J. Munyaneza (2), R. Novy (3). (1) USDA-ARS San Joaquin Valley Agricultural Sciences Center, Parlier, CA, U.S.A.; (2) USDA-ARS Yakima Agricultural Research Laboratory, Wapato, WA, U.S.A.; (3) USDA-ARS Small Grains and Potato Germplasm Research Unit, Aberdeen, ID, U.S.A. View Abstract | View Presentation

A new gene in the Luteoviridae essential for systemic infection W. A. MILLER (1), E. Smirnova (2), A. E. Firth (3), D. Scheidecker (2), A. Rakotondrafara (4), B. Chung (3), V. Ziegler-Graff (2). (1) Iowa State Univ, Ames, IA, U.S.A.; (2) Institut de Biologie Moléculaire des Plantes, Strasbourg, France; (3) University of Cambridge, Cambridge, United Kingdom; (4) University of Wisconsin, Madison, WI, U.S.A. View Abstract | View Presentation

Myths and Realities of Biopesticides: Academic, Industry, and Grower Perspectives

Introduction to commercially available biopesticides and the biopesticide industry: History and current status. W. STONEMAN (1). (1) Biopesticide Industry Alliance, McFarland, WI, U.S.A. View Abstract | View Presentation

Foliar biopesticides: Mechanisms, strengths, and limitations. S. ZHANG (1). (1) Tropical Research and Education Center, University of Florida, Homestead, FL, U.S.A. View Abstract | View Presentation

Development, marketing, support, and effective use of biopesticides in organic, sustainable, and conventional crop production. M. S. KRAUSE (1). (1) BioWorks, Inc., Victor, NY, U.S.A. View Abstract | View Presentation

Optimizing use of biopesticides for successful, cost-effective plant disease management in ornamentals production. R. MCGAUGHEY (1). (1) Pioneer Gardens Inc., Deerfield, MA, U.S.A. View Abstract | View Presentation

Soilborne biopesticides: Mechanisms, strengths, and limitations. B. MCSPADDEN GARDENER (1). (1) The Ohio State University, Wooster, OH, U.S.A. View Abstract | View Presentation

Optimizing use of biopesticides for successful, cost-effective plant disease management in greenhouse vegetable production. M. BLEDSOE (1). (1) Village Farms International, Heathrow, FL, U.S.A. View Abstract | View Presentation

Plant Pathologists of the Future: Showcasing the Top Graduate Students from APS Division Meetings

Southern Division - Effects of infection timing on Wheat streak severity J. A. PRICE (1), J. Gray (2), F. Workneh (2), C. M. Rush (2). (1) Texas A&M AgriLife Research, Amarillo, TX, U.S.A.; (2) Texas A&M AgriLife Research, Bushland, TX, U.S.A. View Abstract | View Presentation

Potomac Division - Xanthomonas effector AvrRxo1 suppresses plant immunity by regulating the plant stomatal aperture sizes S. WU (1), C. Zhou (1), Y. Liu (1), Q. Cheng (2), B. Zhao (1). (1) Virginia Tech, Blacksburg, VA, U.S.A.; (2) Nanjing Forestry University, Nanjing, China View Abstract | View Presentation

Pacific Division -What Alternaria species cause diseases of potato in the Pacific Northwest? L. TYMON (1), T. F. Cummings (1), T. L. Peever (1), D. A. Johnson (1). (1) Washington State University, Pullman, WA, U.S.A. View Abstract | View Presentation

Professionalism-Outreach

An online course "Simulation Modeling in Botanical Epidemiology and Crop Loss Analysis" in The Plant Health Instructor on the APSnet Education Center S. Savary (1), K. Bowen (2), K. L. Stevenson (3), L. WILLOCQUET (1). (1) INRA, Castanet Tolosan Cedex, France; (2) Auburn Univ., Auburn, AL, U.S.A.; (3) Univ. Georgia, Tifton, GA, U.S.A. View Abstract | View Presentation

Revealing the Stories of the Genome Via Genotyping-By-Sequencing (GBS)

Genetic basis of quantitative virulence and the impact of recombination hotspots in Zymoseptoria tritici identified by high-throughput RAD-sequencing D. CROLL (1), E. Stewart (1), B. A. McDonald (1). (1) ETH Zurich, Zurich, Switzerland View Abstract | View Presentation

Schroth Faces of the Future: Virology

Reverse genetics and virus epidemiology: Integrating basic and applied research for disease management T. THEKKE-VEETIL (1). (1) Department of Plant Pathology, Division of Agriculture, University of Arkansas System., Fayetteville, AR, U.S.A. View Abstract | View Presentation

Special Session

The Borlaug Global Rust Initiative: A Successful Cooperative International Research Community M. ROUSE (1), S. D. Evanega (2), D. Coffman (2). (1) USDA-ARS and University of Minnesota, Saint Paul, MN, U.S.A.; (2) Cornell Univ, Highland, NY, U.S.A. View Abstract | View Presentation

Supply, Physical Access, Economic Access, and Utilization: How are the Four Dimensions of Food Security Affected by Plant Diseases?

The multiple dimensions of food security and their challenges. P. S. TENG (1). (1) National Institute of Education, Nanyang Technological University, Singapore, Singapore View Abstract | View Presentation

Environmental interactions and multiple forcing leading to shifts and variability of crop yield losses. S. SAVARY (1). (1) INRA, Castanet Tolosan Cedex, France View Abstract | View Presentation

Loss and wastage in the food supply chain caused by microbes. T. V. SUSLOW (1), E. J. Mitcham (1). (1) University of California, Davis, CA, U.S.A. View Abstract | View Presentation

How important are plant diseases as major causes of food insecurity? C. A. HOLLIER (1). (1) Louisiana State University Agricultural Center, Baton Rouge, LA, U.S.A. View Abstract | View Presentation

The Complicated Lifestyles of Dothideomycete Fungi: Understanding Novel Mechanisms of Pathogenicity

Investigations of how the necrotrophic specialist Parastagonospora nodorum is using the dual function necrotrophic effector SnTox1 to infect wheat. T. L. FRIESEN (1), Z. Liu (2), Y. M. Kim (2), Y. Gao (2), P. J. De Wit (3), J. D. Faris (1). (1) USDA-ARS Northern Crop Science Laboratory, Cereal Crops Research Unit, Fargo, ND, U.S.A.; (2) North Dakota State University, Fargo, ND, U.S.A.; (3) Wageningen University, Wageningen, Netherlands View Abstract | View Presentation

The stealth pathogenicity of Mycosphaerella graminicola (aka Zymoseptoria tritici). S. B. GOODWIN (1). (1) USDA-ARS / Purdue University, West Lafayette, IN, U.S.A. View Abstract | View Presentation

Understanding Phytobiomes to Improve Agricultural Productivity

How do organisms communicate (cross-kingdom communications) in the phytobiome? V. VENTURI (1). (1) International Centre for Genetic Engineering and Biotechnology, Trieste, Italy View Abstract | View Presentation

Separating signal from noise in the design and analysis of host-microbial communities. E. W. TRIPLETT (1). (1) University of Florida, Gainesville, FL, U.S.A. View Abstract | View Presentation

Phytobiome, a new view of crop productionv- an industry perspective. M. GUILHABERT-GOYA (1). (1) Bayer CropScience LP, Davis, CA, U.S.A. View Abstract | View Presentation

The phyllosphere microbiome: Responses to and impacts on plants. J. A. VORHOLT (1). (1) ETH Zurich, Zurich, Switzerland View Abstract | View Presentation

What's App? Using Apps and Technology in Integrated Plant Disease Management Programming

The Turfpath App: Crowdsourcing the path of turfgrass pests. J. E. KAMINSKI (1). (1) Penn State, University Park, PA, U.S.A. View Abstract | View Presentation

Integrating grower-driven and publically held data for improved plant protection. R. GROVES (1), K. Frost (1), A. Huseth (2). (1) University of Wisconsin, Madison, WI, U.S.A.; (2) Cornell University, Ithaca, NY, U.S.A. View Abstract | View Presentation

Are apps the future? D. MUELLER (1), B. Anderson (2). (1) Iowa State University, Ames, IA, U.S.A.; (2) Vox Media, Ames, IA, U.S.A. View Abstract | View Presentation