EPPO Bulletin (2006) 36, 523-528

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T. Mslmanieh, M. Digiaro, T. Elbeaino, D. Boscia and G.P. Martelli (2006)
Viruses of grapevine in Syria
EPPO Bulletin 36 (3), 523-528
Abstract: Surveys for virus and virus-like diseases were carried out in commercial vineyards and nurseries in seven different Syrian provinces (Aleppo, Dara'a, As Suwayda, Al Qunaytirah, Homs, Hamah, Tartous). Samples were collected at random from 835 individual vines (735 Vitis vinifera and 100 rootstock accessions) for laboratory testing. Grapevine fanleaf virus (GFLV), Arabis mosaic virus (ArMV), and Grapevine virus A (GVA) were the only viruses recovered by mechanical transmission to herbaceous hosts. Vein necrosis developed in c. 53% of graft-inoculated 110R indicators and vein mosaic in V. riparia inoculated with material from cv. Corna Alegra. A total of 71% of the ELISA-tested V. vinifera plants (522 out of 735) were infected by one (14.8%) or more (55.8%) viruses. GVA was the most widespread (54.7%), followed by Grapevine leafroll-associated virus 1 (GLRaV-1, 47.3%), Grapevine fleck virus (GFkV, 29.7%), and Grapevine leafroll-associated virus 3 (GLRaV-3, 23.9%). Other economically relevant viruses were scarcer, i.e. Grapevine leafroll-associated virus 2 (GLRaV-2, 9%), GFLV (0.8%) and ArMV (0.1%). The most important Syrian grapevine varieties, i.e. Hellwany, Salty, Balady, and Zeiny, had average infection rates that ranged between 44% and 91%. The highest incidence of infections was observed at Damascus (90%), whereas it ranged between 68% and 79% in the other provinces, except for Hama (36%). Rootstocks were in much better sanitary condition (25% infection). GFkV (22%) was the most common virus, whilst the presence of GLRaV-3 (3%), GLRaV-1, and GFLV (1%) was negligible. Grapevine rupestris stem pitting associated virus (GRSPaV) was detected in 72.3% of the samples by RT-PCR. A high percentage of the GRSPaV-positive vines (80%) induced vein necrosis reactions in 110R, thus confirming the recently established correlation between this virus and vein necrosis.
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Link to article at publishers website
Database assignments for author(s): Toufic Elbeaino, Michele Digiaro

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution


Pest and/or beneficial records:

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


Grapevine leafroll-associated virus 3 Grapevine (Vitis) Syria
Grapevine leafroll-associated virus 2 Grapevine (Vitis) Syria
Grapevine fanleaf virus Grapevine (Vitis) Syria
Arabis mosaic virus Grapevine (Vitis) Syria
Grapevine fleck virus Grapevine (Vitis) Syria
Grapevine rupestris stem pitting-associated virus Grapevine (Vitis) Syria
Grapevine virus A Grapevine (Vitis) Syria
Grapevine leafroll-associated virus 1 Grapevine (Vitis) Syria