Unlocking the color code: The role of VvBBX44 and VvMYBA1 in regulating grape anthocyanin biosynthesis
A model for the BBX44-MYBA1 regulatory loop controlling anthocyanin biosynthesis in grapevine berry. Credit: Horticulture Research Anthocyanins significantly influence grape quality and color, with transcription factors HY5 and MYBA1 playing pivotal roles in their biosynthesis. Recent findings show that VvBBX44, a B-box protein, inhibits anthocyanin production in grapes by suppressing VvHY5 expression, yet the specific