Grapevine Red Blotch Virus Discovered
During the 17th scientific meeting of the International
Council for the Study of Virus and Virus-Like Diseases of
the Grapevine (ICVG) held at UC Davis, October 7-14,
2012, scientists from Cornell and UC Davis reported the
discovery of a new grapevine virus. Dr. Keith Perry, Department
of Plant Pathology of Cornell Univeristy, reported
a new circular DNA virus from grapevine which is named
"Grapevine cabernet franc-associated virus (GCFaV)". Dr.
Mysore Sudarshana, USDA-ARS, Department of Plant Pathology
of UC Davis reported a circular DNA virus in
grapevines affected by red blotch diseases. They named this
virus "Grapevine red blotch-associated virus (GRBaV)".
It is believed that GCFaV and GRBaV are the same virus
that belongs to the family of Geminiviridae. Noteworthy is
the fact that it is a circular DNA virus composed of 3,206
nucleotides as opposed to linear RNA viruses which make
up the majority of the grapevine virodom. For more information, please download the Grapevine Red Blotch Virus Brochure prepared by Agri-Analysis.
Spring Grapevine Virus Testing is in Season!
Fall is the best time to test for grapevine leafroll-associated viruses and other grapevine viruses. Agri-Analysis uses the state-of-the-art technologies such as polymerase chain reaction (PCR) and the enzyme-linked immunoasorbent assay (ELISA) for the accurate detection of all grapevine viruses. Our Standard Vineguard Panel of assays detects the most significant and most commonly encountered viral and bacterial pathogens affecting grapevine production as listed below. Call us today for your virus testing needs.
VINEYARD VIRUS SURVEY PAYS!
Grapevine viruses are field-transmitted by pests from infected vines to healthy vines such as glassy-winged sharpshooters, nematodes, mealy bugs. Due to the wide presence of these pests in California vineyards, certified nursery stocks may not guarantee virus-free vineyards. Therefore, it is crucial for growers and management companies to regularly and consistently screen and survey their vineyards for the presence of common grapevine viruses to determine the extent of their spread and the health status of their vines. Agri-Analysis is proud to offer the "Vineyard Virus Survey Pays" program. Our scientists would work with your viticulturists and management team to develop a survey plan that inludes site selection, sampling density, time interval, data analysis, reporting method, information management, and survey costs. Our Extensive Vineguard Panel includes eighteen (18) grapevine viruses and other pathogens listed below. Please call us today for more information of our Vineyard Virus Survey Program.
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Grapevine leafroll-associated virus type 1 (GLRaV-1)
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Grapevine leafroll-associated virus type 2 (GLRaV-2)
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Grapevine leafroll-associated virus type 3 (GLRaV-3)
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Grapevine fanleaf virus (GFLV)
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Grapevine virus B (GVB, corky bark associated virus)
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Pierce's Disease (Xylella fastidiosa)
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Grapevine leafroll-associated virus type 4 (GLRaV-4)
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Grapevine leafroll-associated virus type 5 (GLRaV-5)
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Grapevine leafroll-associated virus type 6 (GLRaV-6)
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Grapevine leafroll-associated virus type 7 (GLRaV-7)
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Grapevine leafroll-associated virus type 9 (GLRaV-9)
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Grapevine fleck virus (GFkV)
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Grapevine virus A (GVA)
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Grapevine virus D (GVD)
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Grapevine Rupestris stem-pitting associated virus (GRSPaV)
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Grapevine Leafroll associated virus 2 Red Globe Strain (LR2-RG)
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Grapevine syrah virus - 1 (GSyV-1)
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Grapevine rupestris stem pitting associated virus syrah strain (GRSPaV-Syrah)
VINEGUARD PANEL FOR YOUNG VINE DECLINE FUNGI (Petri disease, Esca):
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Phaeoacremonium aleophilum and other Phaeoacremonium spp.
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Phaeomoniella chlamydospora
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Cylindrocarpon spp.
Other Assays for Detectiing Important Grapevine Diseases: