Evolutionary and Functional Genomics of Virus-Plant Interactions

Monday, August 3; 8:30 Ð 11:30 a.m.; B113-114
Section: Molecular/Cellular Plant Microbe Interactions
Organizers: Alexander Karasev, University of Idaho, Moscow, ID; Savithramma Dinesh-Kumar, Yale University, New Haven, CT
Sponsoring Committee: Virology
Financial Sponsors: Noble Foundation, USDA-APHIS

The life cycle of a plant virus is intimately linked to the normal plant genome expression. To survive and successfully evolve, viruses acquired a host of counter-measures to evade and overcome host plant defenses. Virus replication and underlying virus-host interactions in a plant may become visible through a range of virus-induced symptoms, and sometimes result in plant disease. In recent years, many such virus-induced outcomes were studied in great detail. We want to address modern developments in the studies of virus-plant interactions on the broadest possible scale. These will include mechanisms of plant defense systems, host and virus factors shaping the disease response, and evolutionary aspects of virus-host interactions.

8:30 a.m.	S-42. Small RNA-directed silencing pathways in plants. J. C. CARRINGTON (1). (1) Oregon State University, Corvallis, OR, U.S.A.
9:00 a.m.	S-43. Mechanisms of plant resistance to viruses. S. P. DINESH-KUMAR (1). (1) Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, U.S.A.
9:30 a.m.	S-44. The diverse routes of plant virus evolution. E. V. KOONIN (1). (1) National Library of Medicine, NIH, Bethesda, MD, U.S.A.
10:00 a.m.	S-45. TMV MP gates plasmodesmata via ANK, a tobacco ankyrin-repeat protein which down-regulates callose deposits. V. CITOVSKY (1). S. Ueki (1). (1) Department of Biochemistry and Cell Biology, State University of New York, Stony Brook, NY, U.S.A.
10:30 a.m.	S-46. Yeast as a model host to explore plant virus-host interactions. P. D. NAGY (1). (1) Department of Plant Pathology, University of Kentucky, Lexington, KY, U.S.A.
11:00 a.m.	S-47. Virus-host Òarms raceÓ as a shaping force in virus evolution. V. V. DOLJA (1). (1) Department of Botany & Plant Pathology, Oregon State University, Corvallis, OR, U.S.A.

"New" Nuances in Virus-Vector Biology

Sunday, August 2; 1:00 Ð 3:30 p.m.; B113-114
Section: Biology of Pathogens
Organizers: Anna Whitfield, Dept Plant Pathology, Kansas State University, Manhattan, KS; Judith Brown, University of Arizona, Tucson, AZ
Sponsoring Committee: Virology

With the development of genomic and proteomic technologies, scientists are beginning to uncover the viral and vector proteins that are required for virus transmission by arthropods. This session will highlight new developments in our understanding of the molecular interactions between plant viruses and their vectors.

1:00 p.m.	S-16. Elucidating the functional role of the Crinivirus capsid protein(s) in mediating semi-persistent transmission by whitefly vectors. J. NG (1). (1) University of California, Riverside, CA, U.S.A.
1:30 p.m.	S-17. -Omics for exploring whitefly-Begomovirus interactions. J. BROWN (1). (1) University of Arizona, Tucson, AZ, U.S.A.
2:00 p.m.	S-18. Vector and virus proteins contributing to the regulation of Yellow dwarf virus (Luteoviridae) transmission by aphids. F. GILDOW (1), S. Gray (2). (1) Penn State, University Park, PA, U.S.A.; (2) USDA-ARS, Cornell University, Ithaca, NY, U.S.A.
2:30 p.m.	S-19. Exploiting vector specificity to inhibit Tospovirus transmission. T. GERMAN (1). (1) University of Wisconsin, Madison, WI, U.S.A.
3:00 p.m.	S-20. Molecular and cellular interactions between rhabdoviruses and their insect hosts. A. WHITFIELD (1). (1) Kansas State University, Manhattan, KS, U.S.A.