The R3-MYB Transcription Factor DcMYB56 Regulates Anthocyanin Accumulation by Activating the Expression of Anthocyanin Biosynthesis-Related Genes in <i>Dendrobium candidum</i>.

ABSTRACT: Dendrobium candidum is a traditional Chinese medicinal herb with green and red stems. D. candidum, which has red stems, is highly nutritious. However, there is a need to clarify the mechanisms of transcriptional regulation underlying anthocyanin biosynthesis in D. candidum. In this study, we found that the red stem of D. candidum has a high anthocyanin content and a wide variety of types. Cyanidin derivatives of anthocyanins were found to be responsible for red pigmentation in red leaves. An R3-MYB transcription factor, DcMYB56, which modulates anthocyanin biosynthesis, along with homologs of other plants, was isolated and identified. Compared with that in green stems, DcMYB56 expression in D. candidum red stems markedly increased. The binding of DcMYB56

SUBMITTER: Jia N 

PROVIDER: S-EPMC12197011 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature