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United States Department of Agriculture

Agricultural Research Service

Title: Distribution of Paratrichodorus Allius and Tobacco Rattle Virus in Pacific Northwest Potato Fields

item Mojtahedi, Hassan - WASHINGTON STATE UNIV
item Handoo, Zafar
item Crosslin, James
item Brown, Charles
item Thomas, Peter

Submitted to: Society of Nematology Meeting
Publication Type: Abstract Only
Publication Acceptance Date: June 24, 2000
Publication Date: N/A

Technical Abstract: Soil samples from potato fields in Washington, Oregon, and Idaho were collected, and the only stubby root nematode species identified was Paratrichodorus allius (PA). PA was extracted and added to Samsun NN tobacco to determine the presence of tobacco rattle virus (TRV). The pathogenic potential of TRV isolates was also determined on 'Russet Burbank' and 'Norkotah' potato using PA as vector. PA was found in 30 percent of potato fields, of which 10 percent were viruliferous. Regardless of PA density, potato plant age or duration of exposure to PA, TRV from Pasco, WA, was the most virulent strain followed by Umatilla, OR, and Mattawa, WA.

Last Modified: 3/5/2015
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