Occurrence of Nine Grapevine Viruses in Commercial Vineyards of Mendoza, Argentina

GOMEZ TALQUENCA, SEBASTIAN; ALONSO, RODRIGO; LUNA, FACUNDO; LANZA VOLPE, MELISA; BUSCEMA, FERNANDO

Viruses

MDPI

Lugar: Basel; Año: 2023 vol. 15

Grapevine is a widely grown fruit crop that is seriously affected by different viruses,reducing grape yield and quality, as well as threatening profitability. Vineyard disease managementrequires accurate identification of viral infections. This study aimed to survey the presence of tengrapevine viruses in four geographic sites in the Mendoza province of Argentina. Two hundredtwenty-three composite cane samples from 1060 plants of six cultivars were collected from 26 blocks distributed across 11 vineyards. The cane samples were screened by RT-PCR for the following viruses: grapevine leafroll-associated viruses 1–4 (GLRaV 1, 2, 3, and 4), grapevine fanleaf virus (GFLV), grapevine fleck virus (GFkV), grapevine virus A (GVA) and B (GVB), grapevine rupestrisstem pitting associated virus (GRSPaV), and arabis mosaic virus (ArMV). The results showed anuneven occurrence of viruses through the sampled regions, with GRSPaV being prevalent (71.1%),followed by GFLV (28.9%), GFkV (20.6%), and GLRaV-2 (14.7%). GVB was not detected. This studyrevealed a moderate prevalence of viruses associated with economically impactful diseases in thevineyards surveyed.