VvmybA1 genotype determines grape skin color

Introduction: The skin color of grapes is deter-mined by the quantity and composition of anthocy-anins. Black and red cultivars accumulate anthocyanins in their skins, whereas white cultivars do not synthesize them. In grape, Myb-related genes such as VlmybA1-1 of Vitis labruscana regulate anthocyanin biosynthesis by controlling expression of the gene for UDP-glu-cose: flavonoid 3-O-glucosyltransferase (K