Annual Meeting Program Book - American Phytopathological Society

sequencing has permitted scientists to quickly and easily sequence
phytopathogen genomes from all domains of life. Our
tool box of new and cost-effective pyrosequencing and microarray
technologies remains a largely untapped resource for
the examination of plant pathogens and soilborne microbial
communities. Furthermore, molecular phytopathologists have
uncovered the biology that underlies pathogenesis through
gene expression analysis using these sequencing technologies
and DNA microarrays. This session highlights the technologies
and research supporting pyro- and high throughput sequencing,
DNA microarrays, and gene expression analysis to communicate
the impact of this knowledge.
1:00 p.m. S-76. Integrating molecular and computational
methods to evaluate the Pseudomonas syringae
transcriptome I. M. FILIATRAULT (1), P. Stodghill
(1). (1) USDA-ARS Plant-Microbe Interactions
Research Unit, Ithaca, NY, U.S.A.
1:30 p.m. S-77. Integrating molecular and computational
methods to evaluate the Pseudomonas syringae
transcriptome II. P. STODGHILL (1), M.
Filiatrault (1). (1) USDA-ARS Plant-Microbe
Interactions Research Unit, Ithaca, NY, U.S.A
2:00 p.m. S-78. Genomic perspectives on plant-associate
enterobacteria. J. D. GLANSER (1). (1) Genome
Center of Wisconsin, University of Wisconsin-
Madison, Madison, WI, U.S.A.
2:30 p.m. S-79. GeoChip: A high throughput genomics
technology for characterizing microbial functional
community structure. J. ZHOU (1). (1) Institute
for Environmental Genomics and Department
of Botany and Microbiology, University of
Oklahoma, Norman, OK, U.S.A.
3:00 p.m. S-80. Comparative and functional genomics
of oomycete infection. B. M. TYLER (1). (1)
Virginia Bioinformatics Institute, Virginia Tech,
Blacksburg, VA, U.S.A.
3:30 p.m. S-81. Comparative genomics, sequence mining
and transcript profiling of cyst nematodes
during plant parasitism. A. A. ELLING (1). (1)
Department of Plant Pathology, Washington State
University, Pullman, WA, U.S.A.
APS-ISF Collaboration to Implement a System to
Standardize Naming of Plant Pathogen Races and Strains
1:00 – 3:30 p.m.; A106
Section: Diseases of Plants
Organizer: Phyllis Himmel, Monsanto Vegetable Seeds,
Woodland, CA, U.S.A.
Moderator: Lindsey du Toit, Washington State University,
Mount Vernon, WA, U.S.A.
Sponsoring Committees: Seed Pathology; Ad Hoc Committee
on Culture Collections; APS-ISF Ad Hoc Committee on
Naming Pathogen Races/Strains
Inconsistency in protocols used to name plant pathogen races
and strains can undermine the value of disease resistance
claims made for specific cultivars, particularly in specialty
crops such as vegetables. A broader understanding of the
impact of naming pathogen races and strains on the vegetable
industry is needed. For example, inconsistencies in naming
of races, pathotypes, and/or strains of the downy mildew
pathogens of spinach and lettuce, as well as the Fusarium wilt
pathogens of tomato, melon, and watermelon, cause continuing
confusion for growers, the vegetable seed industry and
academia. There is no internationally recognized authority on
nomenclature for new races and strains. Readily available sets
of differential host cultivars and reference cultures of pathogen
races and strains are needed to help standardize the nomenclatural
system and provide clarity for claims of disease resistance.
Members of APS, the American Seed Trade Association, and
the International Seed Federation are collaborating to implement
a network of private and public research laboratories
and seed companies in the United States for the maintenance,
storage, multiplication, and distribution of reference pathogen
cultures and seed of differential host cultivars, to facilitate
standardizing the naming of plant pathogen races and strains.
The proposed system should complement existing systems in
Europe (i.e., Naktuinbouw in the Netherlands and Group for
Control and Testing Varieties and Seeds - GEVES in France)
and comply with U.S. regulatory requirements. The complexity
and challenges of implementing this system, demand for
such a system, and proposed protocols will be discussed in
the session. Feedback from the APS community is critical to
development of a system of reference pathogen cultures and
differential host sets for naming of pathogen races and strains
with guidelines that are accepted globally by the scientific
community.
1:00 p.m. S-82. Overview of proposed system. P. HIMMEL
(1). (1) Monsanto, Woodland, CA, U.S.A.
1:30 p.m. S-83. Current European systems. C. VAN
ETTEKOVEN (1). (1) Naktuinbouw,
Roelofarendsveen, The Netherlands
2:00 p.m. S-84. Proposed U.S. permitting strategy
for pathogen race and strain distribution.
R. DUNKLE (1). (1) American Seed Trade
Association, Alexandria, VA, U.S.A.
2:30 p.m. S-85. Naming of spinach downy mildew races, a
case study. J. C. CORRELL (1), S. T. Koike (2),
S. Smilde (3). (1) Department of Plant Pathology,
University of Arkansas, Fayetteville, AR,
U.S.A.; (2) University of California Cooperative
Extension, Salinas, CA, U.S.A.; (1) University of
Arkansas, Fayetteville, AK, U.S.A.
3:00 p.m. Discussion
Carboxoylic Acid Amide Fungicides (CAA) FRAC Group 40
1:00 – 3:00 p.m.; B110-112
Section: Plant Disease Management
Organizers: Gilberto Olaya, Syngenta Crop Protection, Vero
Beach, FL, U.S.A.; Alex Cochran, Syngenta, Roseville, CA,
U.S.A.
Moderator: Gilberto Olaya, Syngenta Crop Protection, Vero
Beach, FL, U.S.A.
Sponsoring Committees: Chemical Control; Pathogen
Resistance
Financial Sponsor: FRAC
31
MondaY