First Report of Grapevine fabavirus in Grapevines in China

Recently, a novel virus tentatively named grapevine fabavirus (GFabV) was reported in North America, it currently classified as a putative member of the genus Fabavirus (Al Rwahnih et al. 2016). Currently, its effects on grapevines remain unknown. In this study, leaves of three virus-eliminating ‘Beta’ grapevines (Vitis riparia×V.labrusca) showed chlorotic mottling and deformation after being grafted with ‘Ruby seedless’ grapevine (Vitis vinifera L.) scion. Before grafting, the ‘Beta’ and ‘Ruby seedless’ grapevines had been screened by RT-PCR for Grapevine leafroll-associated virus -1-4 and 7 (GLRaV-1-4 and 7), Grapevine fanleaf virus, Grapevine rupestris stem pitting-associated virus, Grapevine fleck virus, Grapevine virus A (GVA), GVB, GVE, Grapevine pinot gris virus, and Grapevine berry inner necrosis virus. No viruses were detected in the ‘Beta’ grapevines, except for GLRaV-3 in the ‘Ruby seedless’ grapevine. Additionally, small RNAs from the diseased ‘Beta’ leaves were sequenced as described previous...