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Arabidopsis RZFP34/CHYR1, a Ubiquitin E3 Ligase, Regulates Stomatal Movement and Drought Tolerance via SnRK2.6-Mediated Phosphorylation
Ding, Shuangcheng1; Zhang, Bin; Qin, Feng
2015
发表期刊PLANT CELL
ISSN1040-4651
卷号27期号:11页码:3228-3244
摘要Abscisic acid (ABA) is a phytohormone that plays a fundamental role in plant development and stress response, especially in the regulation of stomatal closure in response to water deficit stress. The signal transduction that occurs in response to ABA and drought stress is mediated by protein phosphorylation and ubiquitination. This research identified Arabidopsis thaliana RING ZINC-FINGER PROTEIN34 (RZP34; renamed here as CHY ZINC-FINGER AND RING PROTEIN1 [CHYR1]) as an ubiquitin E3 ligase. CHYR1 expression was significantly induced by ABA and drought, and along with its corresponding protein, was expressed mainly in vascular tissues and stomata. Analysis of CHYR1 gain-of-function and loss-of-function plants revealed that CHYR1 promotes ABA-induced stomatal closure, reactive oxygen species production, and plant drought tolerance. Furthermore, CHYR1 interacted with SNF1-RELATED PROTEIN KINASE2 (SnRK2) kinases and could be phosphorylated by SnRK2.6 on the Thr-178 residue. Overexpression of CHYR1(T178A), a phosphorylation-deficient mutant, interfered with the proper function of CHYR1, whereas CHYR1(T178D) phenocopied the gain of function of CHYR1. Thus, this study identified a RING-type ubiquitin E3 ligase that functions positively in ABA and drought responses and detailed how its ubiquitin E3 ligase activity is regulated by SnRK2.6-mediated protein phosphorylation.
学科领域Biochemistry & Molecular Biology ; Plant Sciences ; Cell Biology
DOI10.1105/tpc.15.00321
收录类别SCI
语种英语
WOS关键词SNRK2 PROTEIN-KINASES ; ABSCISIC-ACID ; HYDROGEN-PEROXIDE ; GENE-EXPRESSION ; TRANSCRIPTION FACTORS ; POSITIVE REGULATOR ; SEED-GERMINATION ; PLANT-RESPONSES ; STRESS ; ABA
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号WOS:000368295800016
出版者OXFORD UNIV PRESS INC
文献子类Article
出版地CARY
EISSN1532-298X
资助机构National Basic Research Program of China [2012CB114302-4] ; National Natural Science Foundation of China [31171163, 31300995]
作者邮箱qinfeng@ibcas.ac.cn
作品OA属性Green Published, Bronze
引用统计
被引频次:109[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/25761
专题中科院植物分子生理学重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing 100093, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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GB/T 7714
Ding, Shuangcheng,Zhang, Bin,Qin, Feng. Arabidopsis RZFP34/CHYR1, a Ubiquitin E3 Ligase, Regulates Stomatal Movement and Drought Tolerance via SnRK2.6-Mediated Phosphorylation[J]. PLANT CELL,2015,27(11):3228-3244.
APA Ding, Shuangcheng,Zhang, Bin,&Qin, Feng.(2015).Arabidopsis RZFP34/CHYR1, a Ubiquitin E3 Ligase, Regulates Stomatal Movement and Drought Tolerance via SnRK2.6-Mediated Phosphorylation.PLANT CELL,27(11),3228-3244.
MLA Ding, Shuangcheng,et al."Arabidopsis RZFP34/CHYR1, a Ubiquitin E3 Ligase, Regulates Stomatal Movement and Drought Tolerance via SnRK2.6-Mediated Phosphorylation".PLANT CELL 27.11(2015):3228-3244.
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