C-TERMINAL DOMAIN PHOSPHATASE-LIKE 1 promotes flowering with TAF15b by repressing the floral repressor gene FLOWERING LOCUS C.

ABSTRACT: Arabidopsis TATA-BINDING PROTEIN-ASSOCIATED FACTOR15b (TAF15b) is a plant-specific component of the transcription factor IID complex. TAF15b is involved in the autonomous pathway for flowering and represses the transcription of FLOWERING LOCUS C (FLC), a major floral repressor in Arabidopsis. While components of the autonomous flowering pathway have been extensively studied, scant attention has been directed toward elucidating the direct transcriptional regulators responsible for repressing FLC transcription. Here, we demonstrate that C-TERMINAL DOMAIN PHOSPHATASE-LIKE 1 (CPL1) is a physical and functional partner of TAF15b, playing a role in FLC repression. CPL1 is a protein phosphatase that dephosphorylates the C-terminal domain of RNA polymerase II (Pol II). Through the immunoprecipitat

SUBMITTER: Kyung J 

PROVIDER: S-EPMC11822305 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature