The grapevine VvibZIPC22 transcription factor is involved in the regulation of flavonoid biosynthesis.

ABSTRACT: In grapevine, flavonoids constitute one of the most abundant subgroups of secondary metabolites, influencing the quality, health value, and typicity of wines. Their synthesis in many plant species is mainly regulated at the transcriptional level by modulation of flavonoid pathway genes either by single regulators or by complexes of different regulators. In particular, bZIP and MYB factors interact synergistically in the recognition of light response units present in the promoter of some genes of the pathway, thus mediating light-dependent flavonoid biosynthesis. We recently identified VvibZIPC22, a member of clade C of the grapevine bZIP family, in a quantitative trait locus (QTL) specifically associated with kaemperol content in mature berries. Here, to validate the involvement of this ca

SUBMITTER: Malacarne G 

PROVIDER: S-EPMC4892739 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature