Functional redundancy of R2R3-MYB transcription factors involved in anthocyanin biosynthesis is manifested in anther pigmentation in petunia.

ABSTRACT: Accumulation of anthocyanin provides pigmentation in plant tissues. In petunia, gene expression profiles that lead to anthocyanin production have been extensively characterized in terms of pigmentation in flower petals. Anthers are also pigmented, but the transcriptional control of the genes for anthocyanin biosynthesis in anthers has not been fully characterized. Here we addressed this issue by analyzing the expression of structural genes and genes encoding transcription factors (TFs) of the pathway. Ectopic expression of the PURPLE HAZE (PHZ) gene encoding an R2R3-MYB activator induced pigmentation in anthers. The pigmentation was accompanied by an increase in mRNA levels of AN1, MYB27 and MYBx among the genes encoding TFs. Among the structural genes, m

SUBMITTER: Yuhazu M 

PROVIDER: S-EPMC11500589 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature