PYR/PYL/RCAR蛋白介导植物ABA的信号转导

doi:10.3724/SP.J.1005.2012.00560

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HEREDITAS ›› 2012, Vol. 34 ›› Issue (5): 560-572.doi: 10.3724/SP.J.1005.2012.00560

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ABA signaling mediated by PYR/PYL/RCAR in plants

HU Shuai^1,2, WANG Fang-Zhan^1,2, LIU Zhen-Ning^1,2, LIU Ya-Pei^1,2, YU Xiao-Lin^1,2

1. Institute of Vegetable Sciences, Zhejiang University, Hangzhou 310058, China 2. Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Hangzhou 310058, China

Received:2011-10-09 Revised:2011-02-12 Online:2012-05-20 Published:2012-05-25
Contact: Yu Xiaolin E-mail:xlyu@zju.edu.cn

Abstract

Abstract: Abscisic acid (ABA) is a phytohormone that plays critical roles in numerous developmental stages as well as in adaptive responses to biotic and abiotic stresses. Recent breakthroughs in the field of ABA signaling have indicated that there are three major components, PYR/PYL/RCAR (an ABA receptor), type 2C protein phosphates (PP2C, a negative regulator), and SNF1-related protein kinase 2 (SnRK2, a positive regulator). Further results show that these three proteins construct a double negative regulatory system, PYR/PYL/RCAR—| PP2C—| SnRK2, to regulate ABA signal responses in plant cells. Moreover, the combination patterns of these components in vivo are restricted by spatio-temporal and biochemical determinants and the combinational variation in the ABA signalosome is specific to different ABA signal responses. This review summarizes recent advances of study on the molecular basis and regulatory mechanism of PYR/PYL/RCAR-mediated ABA signaling pathway and PYR/PYL/RCAR―PP2C―SnRK2 complex-mediated ABA signal regulation network in plants. The perspectives related to this study are proposed.

Key words: ABA, signal transduction, PYR/PYL/RCAR, PP2C, SnRK2

HU Shuai, WANG Fang-Zhan, LIU Zhen-Ning, LIU Ya-Pei, YU Xiao-Lin. ABA signaling mediated by PYR/PYL/RCAR in plants[J]. HEREDITAS, 2012, 34(5): 560-572.

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ABA signaling mediated by PYR/PYL/RCAR in plants

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