Abstract
Wild grapevines (Vitis vinifera spp. sylvestris) grow in the northern part of Tunisia, and can potentially be natural reservoirs of pathogens including viruses. Grapevine Rupestris stem pitting-associated virus (GRSPaV), a member of the genus Foveavirus in the family of Betaflexiviridae. It is present in grapevines worldwide and is associated with rupestris stem pitting (RSP) and grapevine vein necrosis (Meng et al. 2013). The virus has been detected in the pollen of infected grapevines (Rowhani et al. 2000), but its spread through pollen is not confirmed, although it is transmitted by seed from infected mother plants to their progeny (Lima et al. 2006b). In Tunisia, GRSPaV is very common in table grape cultivars (Soltani et al. 2013) but no data are currently available on the presence of viruses in Tunisian wild grapevines, which can play a role in the dissemination of viruses to the cultivated grapevines. To address this knowledge gap, a survey was carried out in the mountain forests of northern Tunisia...
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