Oral Technical Sessions


Biological and Cultural Disease Management 

August 3, 10:15 - 11:30 a.m.

  • Grass residues as a sustainable carbon source in application of anaerobic soil disinfestation for control of apple nursery replant disease:  Shashika Hewavitharana, Washington State University 
  • Management of Fusarium wilt Tropical race 4 in bananas: ANDRE DRENTH, The University of Queensland, Australia 
  • Organic rice disease management research in the United States: XIN-GEN ZHOU, Texas A&M AgriLife Research U.S.A. 
  • Efficacy of biopesticides on root diseases and pests in hydroponic production of vegetables: ANISSA POLEATEWICH, Vineland Research and Innovation Centre, Canada
  • Pseudomonas sp associated with Smilax bona-nox display strong activity against Phytophthora spp: GUL ALI, University of Florida, U.S.A. 

 

Bacterial Disease Management 
August 3, 10:15 - 11:30 a.m.

  • Epidemiology and management of bacterial leaf spot caused by novel Pseudomonas syringae strains on watermelon in Florida: ERIC NEWBERRY NFREC, University of Florida, U.S.A. 
  • Whole genome sequencing of Xanthomonas perforans identifies effectors that influence breeding strategies: SUJAN TIMILSINA, University of Florida, U.S.A. 
  • Cybridization: A promising plant resistance for citrus canker control: MAYARA MURATA, University of Florida, U.S.A.
  • Biological control of plant pathogenic bacteria: GIORA KRITZMAN, Nobactra Israel 
  • Investigation of the anti-bacterial activity of SERENADE® ASO against bacterial diseases of crops:TAD SMITH, Bayer, Crop Science Division - Biologics Research, U.S.A.

 

Bacterial Virulence Regulation 
August 2, 9:45 - 11:00 a.m.

  • Characterization of RpfB-dependent DSF-Family Quorum Sensing Signal Turnover System in the Phytopathogen Xanthomonas: LIAN ZHOU, Shanghai Jiao Tong University China  
  • The in planta regulon of the major Ralstonia solanacearum virulence regulator PhcA: DEVANSHI KHOKHANI, University of Wisconsin, Madison, U.S.A. 
  • Determination of CsrA/RsmA regulon in Xanthomonas citri subsp. citri: MAXUEL ANDRADE, Dept. Microbiology and Cell Science, CREC- University of Florida, U.S.A. 
  • Construction of phosphodiesterase mutants in Erwinia amylovora to evaluate the role of cyclic di-GMP in virulence regulation: ROSHNI KHARADI, Michigan State University U.S.A. 
  • Integration of plant host-derived signals to coordinate developmental processes involved in Pantoea stewartii subsp. stewartii biofilm maturation: M. CAROLINE ROPER, University of California, Riverside, U.S.A.

 

Effector Biology 
August 3, 1:00 - 2:15 p.m.

  • Xanthomonas effector kinase XopAU promotes disease symptoms by activation of host MAPKK: DORON TEPER, Department of Molecular Biology and Ecology of Plants, Tel Aviv University, Israel 
  • Dissecting the function and downstream targets of CsLOB1 in citrus: SHUO DUAN, Citrus research and education center, U.S.A.
  • Resistance of Carolina Gold Select rice to African strains of Xanthomonas oryzae pv. oryzicola is triggered by inactivated TAL effectors: LINDSAY TRIPLETT, The Connecticut Agricultural Experiment Station, U.S.A. 
  • Ralstonia solanacearum effector RipAA host target and the effect of intron spliced hairpin RNA silencing on host susceptibility: AFTAB KHAN, University of Florida, U.S.A.
  • Degradation of the master regulator of plant defense NPR1 by the type III effector HopAB2: ZHENGQING FU, University of South Carolina, U.S.A.

 

Fungal Diseases 
August 1, 10:15 - 11:30 a.m.

  • Worldwide distribution of the sweet potato strains of Ceratocystis fimbriata: QIAN LI, China Agricultural University/Postdoctoral Fellows Workstation of Haidian Science Park, China
  • Occurrence of foliar diseases of watermelon on commercial farms in South Carolina in 2015: GABRIEL RENNBERGER, Coastal Research and Education Center, Clemson University, U.S.A.
  • Fungi associated with cankers and wounds of cultivated and wild olives in the Western Cape, South Africa: CHRISTOFFEL SPIES, ARC Infruitec-Nietvoorbij, South Africa
  • Identifying sources of inoculum and timing of tissue infection by fungal pathogens associated with winterberry fruit rot: SHAN LIN, The Ohio State University, U.S.A.
  • Improving genomic resources for the detection of Macrophomina phaseolina infection of strawberry: ALYSSA BURKHARDT, USDA, U.S.A.

 

Fungal Genomics 
August 3, 10:15 - 11:30 a.m.

  • Genetic basis for pathogenicity in Fusarium oxysporum f.sp. cepae causing basal rot in onion: JOHN CLARKSON, Warwick Crop Centre, University of Warwick United Kingdom
  • Enhancing our understanding of Fusarium maize stalk rot pathogenesis through gene association subnetwork module analyses: HUAN ZHANG, Texas A&M University, U.S.A. 
  • Elucidating the genetic basis of race differentiation in Cercospora sojina through genotype-by-sequencing approaches: SANDEEP SHARMA, University of Arkansas, U.S.A. 
  • RNA-Seq analysis of stuA mutants in Fusarium verticillioides indicates dramatic genomic wide transcriptional reprogramming: MANISHA RATH, University of Georgia & USDA, U.S.A.
  • Quantitative pyrosequencing for rapid detection and quantification of Aspergillus flavus atoxigenic active ingredients in complex fungal communities: KENNETH SHENGE, USDA-ARS, U.S.A.

 

Fungal Pathogenicity
August 1, 1:00 - 2:15 p.m.

  • Magnaporthe oryzae zinc finger effector1 exploits rice HIRA/AS1/AS2 complex to alter plant development and increase disease susceptibility: YUEYING CHEN, Penn State University, U.S.A. 
  • Comparative Genomics of Two Magnaporthe oryzae Field Isolates Uncovers Novel Candidate Effector Genes: JUN HUANG, Fujian-Taiwan Joint Center for Ecological Control of Crop Pests, Fujian Agriculture and Forestry University, Fuzhou China
  • Genetics behind avirulence: identification of novel avr-genes in Magnaporthe oryzae: DOMINIQUE TATE, The Ohio State University, U.S.A. 
  • Molecular dissection of a complex gene locus conferring high virulence on barley cv. Bowman in the fungal cereal pathogen Cochliobolus sativus: SHAOBIN ZHONG, North Dakota State University, U.S.A.
  • A forward genetic screen in Phomopsis longicolla provides unique insights into pathogenesis: MARCIO ZACCARON, University of Arkansas, U.S.A. 

 

Fungicide Resistance 
August 2, 1:30 - 2:45 p.m.

  • Assessing potential virulence differences between QoI-sensitive and -resistant Cercospora sojina isolates from Mississippi soybean: NICOLE BROCHARD, Mississippi State University U.S.A.
  • Fungicide resistance profiles of unique and clonal genotypes of gummy stem blight fungi from the southeastern United States: HAO-XI LI, University of Georgia, U.S.A.
  • Fitness and competition studies of QoI resistant and sensitive Cercospora sojina isolates, the causal agent of frogeye leaf spot: BINBIN LIN, University of Tennessee-Entomology & Plant Pathology 
  • Survey for Quinone Outside Inhibitor Resistant Cercospora sojina in Virginia Soybeans: TIAN ZHOU, Virginia Tech Tidewater, AREC, U.S.A. 
  • ADEPIDYNTM fungicide: Cross resistance patterns in Alternaria solani: GILBERTO OLAYA, Syngenta, U.S.A.

 

Host Plant Resistance 
August 2, 1:30 - 2:45 p.m.

  • Characterization of Arabidopsis Defense-related Gene Homologues in Tomato and Strawberry: JULIANA PEREIRA, University of Florida, U.S.A.
  • Speeding up the discovery of novel sources of leaf rust resistance in wheat: ADNAN RIAZ, The University of Queensland, Queensland Alliance for Agriculture and Food Innovation, St Lucia, QLD 4072, Australia 
  • Development of molecular markers tightly linked to Potato virus Y resistance gene Rychc in a diploid potato population: ANA FULLADOLSA, University of Wisconsin-Madison U.S.A.
  • Utilizing mapping-by-sequencing to identify the Dominant Net Form Net Blotch Resistance Gene from Barley Line CI 5791: PRABIN TAMANG, North Dakota State University, U.S.A.
  • Mapping of two QTL conferring adult plant resistance to Puccinia graminis f. sp. tritici race TTKSK (Ug99) and evidence for race specificity: JORDAN BRIGGS, University of Minnesota, U.S.A.

 

Isothermal Pathogen Detection 
August 3, 2:45 - 4:00 p.m.

  • An Integrated Microfluidic Device for Rapid Plum Pox Virus Enrichment and Detection: SIYANG ZHENG, The Pennsylvania State University, U.S.A.
  • AMP lights the way: early detection of airborne inoculum of Magnaporthe oryzae in turfgrass fields: FRANCESCA PEDUTO HAND, The Ohio State University, U.S.A.
  • Development of a rapid AmplifyRP Acceler8 test for grapevine red blotch-associated virus in grapevines: RUGANG LI, Agdia Inc., U.S.A.
  • Rapid LAMP diagnostics for detection and disease alerts of Phytophthora infestans: JEAN RISTAINO, North Carolina State University, U.S.A.
  • Detection of the select agent Rathayibacter toxicus using recombinase polymerase amplification coupled with a lateral flow device: MOHAMMAD ARIF, Department of Plant Pathology, Kansas State University, U.S.A.

 

Latest in Fungicides 
July 31, 2:45 - 4:00 p.m.

  • Trivapro™ fungicide, a new fungicide for broad spectrum control of diseases of corn, soybeans, and wheat: ERIC TEDFORD, Syngenta, U.S.A. 
  • Pimaricin: A new post-harvest fungicide for selected citrus, stone, and pome fruits: DANIEL CHEN, Department of Plant Pathology and Microbiology, University of California, Riverside, U.S.A.
  • Evaluation of new fungicides for management of Phytophthora root rot of citrus: MORGAN GRAY, University of California, Riverside U.S.A. 
  • ADEPIDYNTM:  A new broad-spectrum carboxamide fungicide: TYLER HARP, Syngenta Crop Protection, U.S.A. 
  • Evaluation of fungicides for management of Fusarium wilt of watermelon: NATHAN MILLER, North Carolina State University, U.S.A. 

 

Liberibacter 
August 3, 10:15 - 11:30 a.m.

  • Proposed model for Candidatus Liberibacter asiaticus and solanacearum systemic invasion and multiplication in the psyllid host and vector: JUDITH BROWN, The University of Arizona, U.S.A.
  • Engineering mobile RNA in Carrizo to enhance plant defense responses to control citrus greening: SHUJIAN ZHANG, Integrated Plant Genetics, U.S.A. 
  • Systemic infection of split root trees by Candidatus Liberibacter asiaticus suggests rapid movement between phloem sieve tubes: JAMES ORROCK, Citrus Research and Education Center, University of Florida, U.S.A.
  • Developing resistance to citrus huanglongbing: CHANDRIKA RAMADUGU, University of California Riverside, U.S.A.

 

Metagenomics and the Phytobiome 
August 2, 1:30 - 2:45 p.m.

  • Genetic determinants of bacterial adaptation to plants: ASAF LEVY DOE Joint Genome Institute, U.S.A.
  • Unravelling the sugarcane microbiome to resolve the Yellow Canopy Syndrome in Australia: KELLY HAMONTS, Hawkesbury Institute for the Environment, Australia
  • Metabarcoding the soybean seed core mycobiome: RODRIGO PEDROZO, Kansas State University, U.S.A.
  • Soil microbiomes associated with alternative strategies to manage Verticillium dahlia: PATRIK INDERBITZIN, UC Davis, U.S.A. 
  • Root and rhizosphere microbiome responses to new tomato rootstock systems: RAVIN POUDEL, Plant Pathology Department, Institute for Sustainable Food Systems, and Emerging Pathogens Institute, U.S.A.

 

Mycotoxins 
August 3, 2:45 - 4:00 p.m.

  • Aspergillus communities contaminating red chilies with aflatoxins: PUMMI SINGH, University of Arizona, U.S.A. 
  • RNAseq analysis reveals oxidative stress responses of Aspergillus flavus are related to stress tolerance and aflatoxin production: JAKE FOUNTAIN, University of Georgia, U.S.A.
  • Diversity of the Aspergillus section Flavi S morphotype in Mozambique:  LOURENA ARONE, University of Arizona, U.S.A.
  • Relationship between invasive brown marmorated stink bug and fumonisin contamination of field corn in the Mid-Atlantic: JOSEPH OPOKU, Virginia Tech, U.S.A.
  • Hypoxia tolerance as a factor in Aspergillus flavus invasion and toxin contamination of developing maize seeds: SUBBAIAH CHALIVENDRA, Louisana State University, U.S.A.

 

Nematodes 
August 1, 10:15 - 11:30 a.m.

  • Multiple mechanisms of nematode control conferred by seed and root applications of microbial biocontrol agents, Trichoderma and Bacillus: MOLLY CADLE-DAVIDSON, Advanced Biological Marketing, Inc., U.S.A. 
  • Adaptation of soybean cyst nematode populations to the PI 88788 source of resistance from 2000 through 2015 in Iowa and the effects on soybean yields: GREGORY TYLKA, Iowa State University, U.S.A. 
  • Interaction between Fusarium and soybean cyst nematode on soybean: PAUL OKELLO, South Dakota State University, U.S.A. 
  • Enhanced nematicidal actitivity of abamectin via nanoparticle formulation: RICHARD GUENTHER, North Carolina State University, U.S.A.
  • Effect of Seed Treatments on Root-Knot Management for Soybean and Cotton: WEASAM ALJAAFRI, Mississippi State University, U.S.A. 

 

Oomycete Biology 
August 1, 1:00 - 2:15 p.m.

  • Effect of red light on morphology of Peronospora belbahrii sporangia: JAIMIN PATEL, Tropical Research and Education Center, University of Florida, U.S.A. 
  • Temperature and light effects on germination of Peronospora effuse: ROBIN CHOUDHURY, University of California, Davis, U.S.A. 
  • What is a clone? Rethinking the ancestry of US clonal lineages of Phytophthora infestans using whole genome sequences: BRIAN KNAUS, USDA ARS, Horticultural Crops Research Laboratory, U.S.A. 
  • Oomycete species richness in cacao soil assessed by massive amplicon sequencing of the cytochrome oxidase II gene: MARIA RATTI, Plant Pathology Department, University of Florida, U.S.A.
  • Genome sequence and effector repertoire of the hop downy mildew pathogen Pseudoperonospora humuliLILIANA CANO, University of Florida, U.S.A.

 

Pathogen Detection 
August 2, 8:00 - 9:45 a.m.

  • Precision diagnostics and next-generation decision support systems NEIL BOONHAM FERA, United Kingdom
  • An inexpensive visual PCR method for field detection of Candidatus Liberibacter asiaticus associated with citrus huanglongbing. MANJUNATH KEREMANE, USDA ARS, U.S.A. 
  • Next generation sequencing evaluation for detection of potential threats or emerging forest pest, entry point from spore and insect traps: GUILLAUME BILODEAU, Canadian Food Inspection Agency, Canada 
  • Comparison of two deep sequencing methods for the detection of viruses in sweet potato: RUHUI LI, USDA-ARS, U.S.A.
  • Fluorogenic Detection of Plant Viruses by Helicase Dependent Amplification with Self-Quenched Primers: SANTIAGO MOLINA CÁRDENAS, Oklahoma State University, U.S.A.

 

Pathogen Dispersal 
August 3, 1:00 - 2:15 p.m.

  • Validation of the CDM ipmPIPE Forecasting System: Relating Aerial Transport of Pathogen Spores to Outbreaks of Cucurbit Downy Mildew:  KATIE NEUFELD, Department of Plant Pathology, North Carolina State University, U.S.A. 
  • Plant pathogens were collected over Florida up to 3500 m by a wing-mounted dust collection system called DART (Dust Atmospheric Recovery Technology): ANDREW SCHUERGER, University of Florida, U.S.A. 
  • Detection and quantification of Bremia lactucae by spore trapping and quantitative PCR: SRIDHARA KUNJETI, University of California Davis, U.S.A. 
  • Timing of primary inoculum release by Monilinia vaccinii-corymbosi infecting blueberries in the US Pacific Northwest.: DALPHY HARTEVELD, Washington State University, U.S.A. 
  • Trapping conidia spores of Podosphaera aphanis in high tunnels and field strawberry plots:  RODRIGO ONOFRE, University of Florida, U.S.A.

 

Pathogen Diversity 
August 2, 1:30 - 2:45 p.m.

  • Genetic diversity of Colletotrichum isolates from Sorghum bicolor and S. halepense in the Southeastern United States: KATIA XAVIER, Department of Plant Pathology, University of Kentucky, U.S.A. 
  • Microsatellite genotyping reveals high genetic diversity in Phytophthora infestans from Mexico: SHANKAR SHAKYA, Oregon State University, U.S.A.
  • Illuminating the diversity of rust fungi infecting millets Jill Demers USDA-ARS, U.S.A.
    Characterization of isolates of Phytophthora capsici from the mid-Atlantic region, US: NILWALA ABEYSEKARA, University of Delware, U.S.A. 
  • Phylogenetic and population analyses of the brown root-rot pathogen (Phellinus noxius) highlight the existence of two distinct populations: JANE STEWART, Colorado State University, U.S.A.

 

Pathogen Ecology
August 2, 8:00 - 9:15 a.m.

  • Evidence for sexual reproduction in Fusicladium effusum: NIKKI CHARLTON, The Samuel Roberts Noble Foundation, U.S.A. 
  • Long-term rotation history and previous crop effects on corn seedling health Maria: SOLEDAD BENITEZ, USDA, Northe Central Agricultural Research Laboratory, U.S.A. 
  • Ecological Impact of Signaling Chemicals on Phytophthora erythroseptica: HELEN JIANG, University of Maine, U.S.A.
  • Model for the geographic origin and spread of the globally distributed pathogen Phytophthora palmivora: JIANAN WANG, University of Florida, U.S.A.

 

Plant Resistance 
August 3, 10:15 - 11:30 a.m.

  • COS-OGA stimulates plant innate immunity in a cumulative process that involves salicylic acid: GERALDINE VAN AUBEL, University of Namur, Belgium 
  • Antifungal mechanisms of a plant defensin MtDef4 are not conserved between ascomycete fungi, Neurospora crassa and Fusarium graminearum: KAZI ISLAM, Donald Danforth Center, U.S.A. 
  • Identifying genetic variation in the Sorghum PAMP response: DONGQIN CHEN, Divisions of Plant Science and Biochemistry, University of Missouri-Columbia, MO, U.S.A.
  • Cultivar-specific wheat miRNAs during stripe rust infection in Triticum aestivum: SOWMYA RAMACHANDRAN, Washington State University, U.S.A.
  • Understanding quantitative disease resistance in rice: defense response gene regulation and promoter patterns: BRADLEY TONNESSEN, Colorado State University, U.S.A.
  • Epidemiology and Population Biology of Grape Downy Mildew (Plasmopara viticola) in Georgia: CHENG-FANG HONG, University of Georgia, U.S.A.

 

Population Dynamics
August 2, 9:45 - 11:00 a.m.

  • Pseudoperonospora cubensis on commercial and non-commercial cucurbits in North Carolina: population structure determined by simple sequence repeats: EMMA WALLACE, NCSU, U.S.A.
  • Changes in Plasmopara obducens population structure corresponded with the emergence and rapid spread of the impatiens downy mildew epidemics: CATALINA SALGADO-SALAZAR  USDA-ARS, Rutgers University, U.S.A.
  • Emergent rudbeckia downy mildew epidemics caused by Plasmopara halstedii are genetically distinct from the pathogen populations infecting sunflower: YAZMIN RIVERA  USDA-ARS Systematic Mycology and Microbiology Laboratory and Rutgers University, U.S.A.
  • Species diversity and population structure of Pythium and Globisporangium in Long Island, NY ornamental greenhouses in 2014: MARIA FERNANDA PROANO, Oklahoma State University, U.S.A. 

 

Risk Assessment 
August 1, 10:15 - 11:30 a.m.

  • Association between temperature sensitivity and virulence of Blumeria graminis f. sp. tritici: YILIN ZHOU, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, China 
  • Spatio-temporal aspects of rust and nutrition of coffee plants in different irrigation systems: MARILIA SILVA, UFLA, Brazil 
  • Validation and refinement of a predictive model for Sclerotinia sclerotiorum apothecial development in soybean fields: JAIME WILLBUR, University of Wisconsin - Madison U.S.A.
  • Weather-based risk assessment models for common leaf spot and black seed disease of strawberry caused by Mycosphaerella fragariae: ODILE CARISSE, Agriculture and AgriFood Canada, Canada 
  • Spatio-temporal analysis of rice blast incidence in China: FANGFANG GUO, China Agricultural University, China

 

Viral Diseases 
July 31, 1:00 - 2:15 p.m.

  • Threat to control Canna Yellow Streak Virus; altered infectivity by associating with a Sub-viral element of novel Canna Yellow Mottle Virus: DULANJANI WIJAYASEKARA, Oklahoma State University, U.S.A. 
  • Investigating the spread of Grapevine red blotch-associated virus: ELIZABETH CIENIEWICZ, Cornell University New York State Agriculture Experiment Station, U.S.A. 
  • Factors that influence the structure of Citrus tristeza virus populations: SCOTT HARPER, Department of Plant Pathology, University of Florida, U.S.A.
  • Epidemiological insights into an emerging virus disease: Blueberry shock virus on cranberry: SARA THOMAS-SHARMA, University of Wisconsin-Madison, U.S.A.
  • Virus populations associated with Maize lethal necrosis (MLN) in East Africa: LUCY STEWART, USDA-ARS Corn, Soybean and Wheat Quality Research Unit, U.S.A.

 

Virus-Host Interactions 
August 1, 1:00 - 2:30 p.m.

  • Understanding superinfection exclusion by complex populations of Citrus tristeza virus: SUNG-HWAN KANG, University of Florida, U.S.A. 
  • Bean common mosaic virus isolate overcomes the bc-3 resistance allele in common bean: virus genetic determinants defining a novel pathogenicity group: XUE FENG, University of Idaho, U.S.A. 
  • Determination and characterization of a symptom determinant of Grapevine fanleaf virus: LARISSA OSTERBAAN, Section of Plant Pathology and Plant-Microbe Biology, Cornell University, New York State Agricultural Experiment Station, U.S.A.
  • Ethylene inhibition can prevent aphid attraction and Potato Virus Y spread: AURELIE BAK, UC Davis, U.S.A.
  • Potato virus Y strains co-localize and compete in single epidermal leaf cells: SHAONPIUS MONDAL, Cornell University, U.S.A.
  • Phylogeny of geminivirus coat protein sequences and dPCR aid in identifying Spissistilus festinus as a vector of grapevine red blotch-associated virus. BRIAN BAHDER, University of California, Davis, CA, U.S.A.

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