Arabidopsis noncoding RNA mediates control of photomorphogenesis by red light.

ABSTRACT: Seedling photomorphogenesis is a sophisticated developmental process that is controlled by both the transcriptional and posttranscriptional regulation of gene expression. Here, we identify an Arabidopsis noncoding RNA, designated hidden treasure 1 (HID1), as a factor promoting photomorphogenesis in continuous red light (cR). We show that HID1 acts through phytochrome-interacting factor 3 (PIF3), which encodes a basic helix-loop-helix transcription factor known to be a key repressor of photomorphogenesis. Knockdown of HID1 in hid1 mutants leads to a significant increase in the expression of PIF3, which in turn drives the development of elongated hypocotyls in cR. We identified two major stem-loops in HID1 that are essential for its modulation of hypocotyl growth in cR-grown seedlings. Furth

SUBMITTER: Wang Y 

PROVIDER: S-EPMC4104870 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature