Abe, J., Nabeshima, T. (2021) focused on investigating whether the GPGV virus had spread to other wine regions, specifically in Japan. Through RNA sequencing using the DNBSEQ-G400 ™ platform, two ‘contigs’ were obtained covering almost the entire GPGV virus genome. Confirmation of GPGV virus infection was performed by amplifying the complete capsid protein (CP) gene using the designed primer pair. This corroborated GPGV virus infection in two of fifteen Vitis Coignetiae plant samples. Abe, J., Nabeshima, T. (2021). First report of grapevine Pinot gris virus in wild grapevines (Vitis coignetiae) in Japan. J Plant Pathol 103, 725.