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ARS Home » Pacific West Area » Wapato, Washington » Temperate Tree Fruit and Vegetable Research » Research » Publications at this Location » Publication #395408

Research Project: Developing New Potatoes with Improved Quality, Disease Resistance, and Nutritional Content

Location: Temperate Tree Fruit and Vegetable Research

Title: Potato mop-top virus in Washington seed lots

item Swisher Grimm, Kylie
item Quick, Rich
item Cimrhakl, Launa
item BROWN, CHARLES - Former ARS Employee
item HOLDEN, ZACH - Washington State University
item GARZA, RUDY - Washington State University
item CANTU, VITO - Washington State University
item PAVEK, MARK - Washington State University

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/23/2022
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Potato mop-top virus (PMTV) is a pathogen of economic concern for potato growers in the Northwest U.S. PMTV is vectored to potato by Spongospora subterranea, a fungal pathogen that causes root galling and powdery scab on tuber surfaces (Figure 1A, B). PMTV causes internal tuber necrosis (Figure 1C, D). Visually, PMTV symptoms are indistinguishable from Tobacco rattle virus (TRV). Between 2016 and 2022, tubers from the Washington Seed Lot Trial were tested for the presence of both tuber necrotic viruses to determine the prevalence of PMTV and TRV in seed.