A grapevine anthocyanin acyltransferase, transcriptionally regulated by VvMYBA, can produce most acylated anthocyanins present in grape skins

ABSTRACT: Anthocyanins are flavonoid compounds responsible for red/purple colours in the leaves, fruit and flowers of many plant species. They are produced through a multistep pathway which is controlled by MYB transcription factors. VvMYBA1 and VvMYBA2 activate anthocyanin biosynthesis in grapevine (Vitis vinifera) and are non-functional in white grapevine cultivars. In this study, transgenic grapevines with altered VvMYBA gene expression were developed, and transcript analysis was carried out on berries using a microarray technique. The results showed that VvMYBA is a positive regulator of the later stages of anthocyanin synthesis, modification and transport in Shiraz. One up-regulated gene ANTHOCYANIN 3- O-GLUCOSIDE-6”-O-ACYLTRANSFERASE (Vv3AT) encodes a BAHD acyltransferase protein, belonging

ORGANISM(S): Vitis vinifera

SUBMITTER: Marianna Fasoli 

PROVIDER: E-GEOD-56915 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress