Partial characterization of two divergent variants of Grapevine leafroll-associated virus 4 [Vitis vinifera L.; Israel; Turkey]

amino acid sequences arn distanza genetica elisa genetic distance genetic variation grapevine leaf roll virus grapevines identification identificazione immune serum immunological techniques immunserum israel israele microscopia microscopie microscopy pcr rna sequenze aminoacidiche siero immune suero inmune technique immunologique tecniche immunologiche test elisa turchia turkey turquia turquie variazione genetica variedades varieties varietà vid vigne virus del enrollado de la vid virus dell'accartocciamento fogliare della vite virus enroulement de la vigne viti vitis vinifera