Figure 6
From: Genetic mechanisms underlying the methylation level of anthocyanins in grape (Vitis viniferaL.)
Synthetic scheme of the regulation of anthocyanin methylation in grape berry. The red arrows present the main influence of MybA protein cis-regulating AOMT1, the key enzyme involved in anthocyanin methylation. In addition, AOMT2, less influenced by MybA, trans-regulate anthocyanin methylation through allelic structural variation influencing enzymatic efficiency. Finally, AOMT3 expression was not detected in mature berries.