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Title: The first report of Grapevine red blotch virus in the National Vitis Germplasm Repositories

item PETERSEN, SYLVIA - Missouri State University
item THOMPSON, TRYSTAN - Missouri State University
item Londo, Jason
item WENPING, QIU - Missouri State University

Submitted to: Plant Disease
Publication Type: Research Notes
Publication Acceptance Date: 10/20/2017
Publication Date: 11/28/2017
Citation: Petersen, S., Thompson, T., Londo, J.P., Wenping, Q. 2017. The first report of Grapevine red blotch virus in the National Vitis Germplasm Repositories. Plant Disease. 102(4):828.

Interpretive Summary:

Technical Abstract: Grapevine red blotch virus (GRBV) is a growing threat to cultivated grapevine production. The physiology of this disease is under investigation and efforts to document disease vectors and rate of spread are under way. Currently, this virus is wide spread among commercial vineyards and has been sampled from free-living feral vines and wild grapevines adjacent to vineyards. This study examined wild grapevine species held in the USDA grapevine germplasm repositories (Davis, CA and Geneva, NY) for the presence of this virus using PCR primers designed to detect GRBV. 16 wild grapevine accessions from the Davis, NY repository were shown to be infected by GRBV and included the species V. aestivalis, V. nesbittiana, V. biformis, V. monticola, V. blancoii, V. bloodworthiana, and V. amurensis. Presence of the virus was not detected in the Geneva, NY repository.