European Journal of Plant Pathology (2010) 126, 135-144

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Shaista Lunden, Baozhong Meng, John Avery Jr. and Wenping Qiu (2010)
Association of Grapevine fanleaf virus, Tomato ringspot virus and Grapevine Rupestris stem pitting-associated virus with a grapevine vein-clearing complex on var. Chardonnay
European Journal of Plant Pathology 126 (2), 135-144
Abstract: A disease complex was observed on grapevine var. Chardonnay (Vitis vinifera) in a commercial vineyard in Missouri that destroyed the affected vineyard. Conspicuous vein-clearing symptoms on the leaves of originally diseased Chardonnay vines and bud-grafted Chardonnay, V. vinifera 'Cabernet Franc', V. vinifera 'Baco Blanc', and hybrid 'LN-33' vines are characteristics of the disease complex, which is referred to as the grapevine vein-clearing complex (GVCC). By applying reverse-transcription polymerase chain reaction (RT-PCR) using virus-specific primers, we detected combinations of Grapevine fanleaf virus (GFLV), Tomato ringspot virus (ToRSV) and Grapevine rupestris stem pitting-associated virus (GRSPaV), in symptomatic Chardonnay vines. Sequencing of RT-PCR amplified DNA fragments confirmed the identity of each virus, indicating the occurrence of ToRSV yellow vein strain, and two distinct strains of GRSPaV in the GVCC-affected Chardonnay vines. This is the first report of the co-infection of two nepoviruses and GRSPaV in var. Chardonnay. This study demonstrated that mixed infections of grapevine viruses belonging to different taxonomic groups pose a great threat to vineyards under certain climatic and soil conditions.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Wenping Qiu, Baozhong Meng

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Grapevine fanleaf virus Grapevine (Vitis) U.S.A. (mid N)
Tomato ringspot virus Grapevine (Vitis) U.S.A. (mid N)
Grapevine rupestris stem pitting-associated virus Grapevine (Vitis) U.S.A. (mid N)