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ARS Home » Pacific West Area » Corvallis, Oregon » Horticultural Crops Research Unit » Research » Publications at this Location » Publication #336216
Title: Grape (Vitis spp.)- Grapevine red blotch disease

Author
item Martin, Robert
item PSCHEIDT, JAY - Oregon State University

Submitted to: Pacific Northwest Plant Disease Control Handbook
Publication Type: Other
Publication Acceptance Date: 12/5/2016
Publication Date: 12/10/2016
Citation: Martin, R.R., Pscheidt, J. 2016. Grape (Vitis spp.)- Grapevine red blotch disease. Pacific Northwest Plant Disease Control Handbook. Available: https://pnwhandbooks.org/plantdisease.

Interpretive Summary:

Technical Abstract: This disease is caused by Grapevine red blotch-associated virus (GRBaV), which was first reported in 2012 from New York and subsequently in California, Washington, Oregon, Idaho, and elsewhere in the United States The discovery occurred when grapevines with red leaf symptoms that tested negative for Grapevine leafroll associated viruses (1-10) (GLRaV) were analyzed for possible new viruses. GRBaV is a graft transmissible DNA virus tentatively assigned to the family Geminiviridae. It has been shown to be transmitted by the three cornered alfalfa hopper (Spissistilus festinus) and other potential vectors are being studied. ODA has added GRBaV to the quarantine pest list for grape at the wine grape industry's request. At this time there are many unknowns about how this virus moves into and within fields and recommended control measures are primarily based on planting clean plants and roguing of diseased plants. Links to recent research publications and a national webinar on grapevine red blotch disease are provided.