Downstream effectors of light- and phytochrome-dependent regulation of hypocotyl elongation in Arabidopsis thaliana.

ABSTRACT: Arabidopsis, like most plants, exhibits tissue-specific, light-dependent growth responses. Cotyledon and leaf growth and the accumulation of photosynthetic pigments are promoted by light, whereas hypocotyl growth is inhibited. The identification and characterization of distinct phytochrome-dependent molecular effectors that are associated with these divergent tissue-specific, light-dependent growth responses are limited. To identify phytochrome-dependent factors that impact the photoregulation of hypocotyl length, we conducted comparative gene expression studies using Arabidopsis lines exhibiting distinct patterns of phytochrome chromophore inactivation and associated disparate hypocotyl elongation responses under far-red (FR) light. A large number of genes was misregulated in plants lacki

SUBMITTER: Oh S 

PROVIDER: S-EPMC3597320 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature