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Plant dual‐specificity tyrosine phosphorylation‐regulated kinase optimizes light‐regulated growth and development in Arabidopsis
Author(s) -
Huang WenYu,
Wu YiChen,
Pu HsinYi,
Wang Ying,
Jang GengJen,
Wu ShuHsing
Publication year - 2017
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/pce.12977
Subject(s) - photomorphogenesis , arabidopsis , circadian clock , biology , microbiology and biotechnology , regulator , phosphorylation , circadian rhythm , arabidopsis thaliana , photoperiodism , kinase , tyrosine phosphorylation , botany , genetics , gene , neuroscience , mutant
Abstract Light controls vegetative and reproductive development of plants. For a plant, sensing the light input properly ensures coordination with the ever‐changing environment. Previously, we found that LIGHT‐REGULATED WD1 (LWD1) and LWD2 regulate the circadian clock and photoperiodic flowering. Here, we identified Arabidopsis YET ANOTHER KINASE1 (AtYAK1), an evolutionarily conserved protein and a member of dual‐specificity tyrosine phosphorylation‐regulated kinases (DYRKs), as an interacting protein of LWDs. Our study revealed that AtYAK1 is an important regulator for various light responses, including the circadian clock, photomorphogenesis and reproductive development. AtYAK1 could antagonize the function of LWDs in regulating the circadian clock and photoperiodic flowering. By examining phenotypes of atyak1 , we found that AtYAK1 regulated light‐induced period‐length shortening and photomorphogenic development. Moreover, AtYAK1 mediated plant fertility especially under inferior light conditions including low light and short‐day length. This study discloses a new regulator connecting environmental light to plant growth.