A histone deacetylase complex regulates anthocyanin biosynthesis during normal plant growth and development and in response to jasmonate.

ABSTRACT: Anthocyanins are plant pigments that play diverse roles in plant growth, adaptation, and stress tolerance. Anthocyanin biosynthesis is tightly regulated, but the underlying regulatory mechanisms remain unclear. Here, we identify a regulatory module composed of the DNA-binding protein VAL1 (VIVIPAROUS1/ABI3-LIKE 1) and a SIN3 (SWI-INDEPENDENT 3)-like histone deacetylase complex that dynamically regulates anthocyanin biosynthesis in Arabidopsis thaliana. Under normal growth conditions, VAL1 recruits the SNL (SIN3-Like)-HDA19 (HISTONE DEACETYLASE 19) complex (SNL-HDA19c) to the PRODUCTION OF ANTHOCYANIN PIGMENT 1 (PAP1) locus for histone deacetylation. Moreover, the negative regulators of jasmonic acid (JA) signaling, JASMONATE-ZIM DOMAIN (JAZ) proteins, interact with VAL1 and further stabili

SUBMITTER: Huang F 

PROVIDER: S-EPMC12902250 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature