Dynamic regulation of PIF5 by COP1-SPA complex to optimize photomorphogenesis in Arabidopsis.

ABSTRACT: Light signal provides the spatial and temporal information for plants to adapt to the prevailing environmental conditions. Alterations in light quality and quantity can trigger robust changes in global gene expression. In Arabidopsis thaliana, two groups of key factors regulating those changes in gene expression are CONSTITUTIVE PHOTOMORPHOGENESIS/DEETIOLATED/FUSCA (COP/DET/FUS) and a subset of basic helix-loop-helix transcription factors called PHYTOCHROME-INTERACTING FACTORS (PIFs). Recently, rapid progress has been made in characterizing the E3 ubiquitin ligases for the light-induced degradation of PIF1, PIF3 and PIF4; however, the E3 ligase(s) for PIF5 remains unknown. Here, we show that the CUL4^{COP 1- SPA} complex is necessary for the red light-induced

SUBMITTER: Pham VN 

PROVIDER: S-EPMC6177295 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature