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Counteraction of ABA-Mediated Inhibition of Seed Germination and Seedling Establishment by ABA Signaling Terminator in Arabidopsis

文献类型：期刊论文

作者Wang, Zhijuan5; Ren, Ziyin5; Cheng, Chunhong1,2,4; Wang, Tao4,6; Ji, Hongtao5; Zhao, Yang8,9; Deng, Zhiping7; Zhi, Liya4; Lu, Jingjing5; Wu, Xinying5
刊名MOLECULAR PLANT
出版日期2020-09-07
卷号13期号:9页码:1284-1297
关键词ABA ABT ABA signaling PYR1/PYL/RCAR-ABA-PP2Cs complex seed germination post-germinative development
ISSN号1674-2052
DOI10.1016/j.molp.2020.06.011
通讯作者Li, Xia(xli@mail.hzau.edu.cn)
英文摘要Seed germination and seedling establishment are important for the reproductive success of plants, but seeds and seedlings typically encounter constantly changing environmental conditions. By inhibiting seed germination and post-germinative growth through the PYR1/PYL/RCAR ABA receptors and PP2C co-receptors, the phytohormone abscisic acid (ABA) prevents premature germination and seedling growth under unfavorable conditions. However, little is known about how the ABA-mediated inhibition of seed germination and seedling establishment is thwarted. Here, we report that ABA Signaling Terminator (ABT), a WD40 protein, efficiently switches off ABA signaling and is critical for seed germination and seedling establishment. ABT is induced by ABA in a PYR1/PYL/RCAR-PP2C-dependent manner. Overexpression of ABT promotes seed germination and seedling greening in the presence of ABA, whereas knockout of ABT has the opposite effect. We found that ABT interacts with the PYR1/PYL/RCAR and PP2C proteins, interferes with the interaction between PYR1/PYL4 and ABI1/ABI2, and hampers the inhibition of ABI1/ABI2 by ABA-bound PYR1/PYL4, thereby terminating ABA signaling. Taken together, our results reveal a core mechanism of ABA signaling termination that is critical for seed germination and seedling establishment in Arabidopsis.
WOS关键词PHOSPHATASES TYPE 2C ; PROTEIN PHOSPHATASES ; ACID ; TRANSDUCTION ; DEGRADATION ; STRESS ; ABI1 ; RECEPTORS ; KINASES ; PATHWAY
资助项目National Key Research and Development Program of China[2016YFA0500503] ; Fundamental Research Funds for the Central Universities[2662018PY075] ; National Natural Science Foundation of China[31730066] ; National Natural Science Foundation of China[91540112] ; Huazhong Agricultural University's Scientific and Technological Self-innovation Foundation[2015RC014]
WOS研究方向Biochemistry & Molecular Biology ; Plant Sciences
语种英语
WOS记录号WOS:000566895400014
出版者CELL PRESS
资助机构National Key Research and Development Program of China ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; Huazhong Agricultural University's Scientific and Technological Self-innovation Foundation
源URL[http://ir.psych.ac.cn/handle/311026/32851]  
专题心理研究所_中国科学院心理健康重点实验室
通讯作者Li, Xia
作者单位1.Yangtze Normal Univ, Coll Life Sci & Technol, Chongqing, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Hebei Normal Univ, Coll Life Sci, Shijiazhuang 050024, Hebei, Peoples R China
4.Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, Shijiazhuang 050021, Hebei, Peoples R China
5.Huazhong Agr Univ, Coll Plant Sci & Technol, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Hubei, Peoples R China
6.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing, Peoples R China
7.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 3210021, Zhejiang, Peoples R China
8.Chinese Acad Sci, Shanghai Ctr Plant Stress Biol, Shanghai Inst Biol Sci, Shanghai 200032, Peoples R China
9.Purdue Univ, Dept Hort & Landscape Architecture, W Lafayette, IN 47907 USA
推荐引用方式
GB/T 7714		 Wang, Zhijuan,Ren, Ziyin,Cheng, Chunhong,et al. Counteraction of ABA-Mediated Inhibition of Seed Germination and Seedling Establishment by ABA Signaling Terminator in Arabidopsis[J]. MOLECULAR PLANT,2020,13(9):1284-1297.
APA Wang, Zhijuan.,Ren, Ziyin.,Cheng, Chunhong.,Wang, Tao.,Ji, Hongtao.,...&Li, Xia.(2020).Counteraction of ABA-Mediated Inhibition of Seed Germination and Seedling Establishment by ABA Signaling Terminator in Arabidopsis.MOLECULAR PLANT,13(9),1284-1297.
MLA Wang, Zhijuan,et al."Counteraction of ABA-Mediated Inhibition of Seed Germination and Seedling Establishment by ABA Signaling Terminator in Arabidopsis".MOLECULAR PLANT 13.9(2020):1284-1297.

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来源：心理研究所

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