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Cryptochromes Orchestrate Transcription Regulation of Diverse Blue Light Responses in Plants
Author(s) -
Yang Zhaohe,
Liu Bobin,
Su Jun,
Liao Jiakai,
Lin Chentao,
Oka Yoshito
Publication year - 2017
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12663
Subject(s) - cryptochrome , photomorphogenesis , transcription factor , phototropin , microbiology and biotechnology , biology , blue light , ubiquitin ligase , transcription (linguistics) , phytochrome , genetics , ubiquitin , gene , arabidopsis , botany , red light , circadian clock , linguistics , physics , philosophy , optics , mutant
Abstract Blue light affects many aspects of plant growth and development throughout the plant lifecycle. Plant cryptochromes ( CRY s) are UV ‐A/blue light photoreceptors that play pivotal roles in regulating blue light‐mediated physiological responses via the regulated expression of more than one thousand genes. Photoactivated CRY s regulate transcription via two distinct mechanisms: indirect promotion of the activity of transcription factors by inactivation of the COP 1/ SPA E3 ligase complex or direct activation or inactivation of at least two sets of basic helix–loop–helix transcription factor families by physical interaction. Hence, CRY s govern intricate mechanisms that modulate activities of transcription factors to regulate multiple aspects of blue light‐responsive photomorphogenesis. Here, we review recent progress in dissecting the pathways of CRY signaling and discuss accumulating evidence that shows how CRY s regulate broad physiological responses to blue light.