Local HY5 Activity Mediates Hypocotyl Growth and Shoot-to-Root Communication.

ABSTRACT: Plants optimize their growth in fluctuating environments using information acquired by different organs. This information is then transmitted through the rest of the plant using both short- and long-distance signals, including hormones and mobile proteins. Although a few of these signals have been characterized, long-distance signaling is not well understood in plants. Recently, the light-regulated transcription factor HY5 was reported to move from the shoot to the root to regulate root growth. We generated a cell-type specifically expressed HY5 fusion protein that could not be detected outside the tissue in which it was targeted. By expressing this DOF-HY5 protein in specific cell types of the hypocotyl, we showed that its local activity was sufficient to regulate hypocotyl growth. We als

SUBMITTER: Burko Y 

PROVIDER: S-EPMC7521671 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature