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ARS Home » Pacific West Area » Aberdeen, Idaho » Small Grains and Potato Germplasm Research » Research » Research Project #439716

Research Project: Development of Sustainable System-Based Management Strategies for two Vector-Borne, Tuber Necrotic Viruses in Potato

Location: Small Grains and Potato Germplasm Research

Project Number: 2050-21000-035-038-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Oct 1, 2020
End Date: Sep 30, 2022

Objective:
1. Conduct Potato virus Y (PVY) demonstration plots to be held at 2-3 locations across the U.S. two times during the grant to educate and transfer PVY research to growers and the industry. 2. Investigate movement of PVY in potato treated with crop oil to limit PVY in the final crop. 3. Develop germplasm resistant to necrotic potato tuber viruses, PVY and Potato mop-top virus (PMTV) as well as powdery scab, the vector for PMTV. Develop use of CRISPR technology to determine exact location of Ry genes for PVY resistance, thereby serving as a tool kit to identify and utilize other disease resistant genes that exist in potato.

Approach:
PVY demonstration plots will be created by originating infected and healthy seed material at Aberdeen for use in nationwide plots. Movement of PVY in crop oil treated potato will be done in greenhouse and field experiments. This will be done in susceptible and partially resistant varieties developed by the breeding program to better understand how crop oil can be used effectively by seed growers to reduce PVY. Hybridizations to develop virus resistant populations and select agronomically acceptable types will be done at Aberdeen, Idaho, and germplasm will be shared with other breeding programs in the U.S. to gather performance data and to increase diversity of germplasm at other breeding programs, and for mapping of PVY and PMTV resistance genes.