TOR and RPS6 transmit light signals to enhance protein translation in deetiolating Arabidopsis seedlings.

ABSTRACT: Deetiolation is an essential developmental process transforming young plant seedlings into the vegetative phase with photosynthetic activities. Light signals initiate this important developmental process by triggering massive reprogramming of the transcriptome and translatome. Compared with the wealth of knowledge of transcriptional regulation, the molecular mechanism underlying this light-triggered translational enhancement remains unclear. Here we show that light-enhanced translation is orchestrated by a light perception and signaling pathway composed of photoreceptors, CONSTITUTIVE PHOTOMORPHOGENESIS 1 (COP1), the phytohormone auxin, target of rapamycin (TOR), and ribosomal protein S6 (RPS6). In deetiolating Arabidopsis seedlings, photoreceptors, including phytochrome A and crypt

SUBMITTER: Chen GH 

PROVIDER: S-EPMC6294885 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature