Project Number: 1907-22000-015-00
Project Type: Appropriated

Start Date: Nov 13, 2002
End Date: Oct 31, 2007

Objective:
1. Elucidate genetic and abiotic factors that influence potato-nematode and potato/grain-virus-vector interactions, and those that affect pest/pathogen population structure. 2. Develop novel, consumer-acceptable, and environmentally sound disease control strategies using genetic engineering and plant breeding technologies in coordination with cultural practices.

Approach:
Genomic and proteomic technologies will identify nematode resistance mechanisms in potato that alter nematode-plant interactions and contribute to the emergence of new races of the golden nematode and to shifts in nematode population dynamics and structure. Similar approaches will identify virus receptors in vectors and corresponding ligands on the virus surface that regulate virus transmission competency in vector populations. Molecular markers for nematode resistance genes will facilitate development of new potato varieties. Molecular diagnostics will facilitate nematode race and virus strain identification. Novel forms of virus and nematode resistance will be developed using genetically modified plants expressing resistance genes in appropriate select tissues. Pathogen/pest and plant populations will be studied before and after deployment of new resistance genes to mitigate risks and ensure consumer acceptance.

Project Team

Gray, Stewart Gibson, Donna

Project Annual Reports

FY 2003

Related National Programs

Plant Diseases (303)

Related Projects

Golden Nematode Resistant Potatoes    Functional Genomics of Luteovirus Movement in Plant Hosts and Aphid Vectors    The Genetic and Biochemical Regulation of Luteovirus Transmission in Aphids    Microsatellite Markers for Schizaphis Graminum    Genetic and Biochemical Regulation of Circulative Virus Transmission in Aphids    Global Bydv/cydv Sequencing Project