HY5: A Pivotal Regulator of Light-Dependent Development in Higher Plants

ELONGATED HYPOCOTYL5 (HY5), a bZIP-type transcription factor, acts as a master regulator that regulates various physiological and biological processes in plants such as photomorphogenesis, root growth, flavonoid biosynthesis and accumulation, nutrient acquisition, and response to abiotic stresses. H...

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Published inFrontiers in plant science Vol. 12; p. 800989
Main Authors Xiao, Yuntao, Chu, Li, Zhang, Yumeng, Bian, Yeting, Xiao, Jiahui, Xu, Dongqing
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 17.01.2022
Subjects
HY5
nutrient utilization
photomorphogenesis
pigment accumulation
Plant Science
root growth
pigment accumulation
photomorphogenesis
nutrient utilization
root growth
HY5
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Summary:ELONGATED HYPOCOTYL5 (HY5), a bZIP-type transcription factor, acts as a master regulator that regulates various physiological and biological processes in plants such as photomorphogenesis, root growth, flavonoid biosynthesis and accumulation, nutrient acquisition, and response to abiotic stresses. HY5 is evolutionally conserved in function among various plant species. HY5 acts as a master regulator of light-mediated transcriptional regulatory hub that directly or indirectly controls the transcription of approximately one-third of genes at the whole genome level. The transcription, protein abundance, and activity of HY5 are tightly modulated by a variety of factors through distinct regulatory mechanisms. This review primarily summarizes recent advances on HY5-mediated molecular and physiological processes and regulatory mechanisms on HY5 in the model plant as well as in crops.
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This article was submitted to Plant Cell Biology, a section of the journal Frontiers in Plant Science
Reviewed by: Xiaodong Xu, Henan University, China; Hirokazu Tanaka, Meiji University, Japan
Edited by: Zhaojun Ding, Shandong University, China
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2021.800989