PYR/PYL/RCAR蛋白介导植物ABA的信号转导

doi:10.3724/SP.J.1005.2012.00560

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

PYR/PYL/RCAR蛋白介导植物ABA的信号转导

胡帅^1,2, 王芳展^1,2, 刘振宁^1,2, 刘亚培^1,2, 余小林^1,2

1. 浙江大学蔬菜研究所, 杭州 310058 2. 农业部园艺植物生长发育与品质调控重点开放实验室, 杭州 310058

收稿日期:2011-10-09 修回日期:2011-02-12 出版日期:2012-05-20 发布日期:2012-05-25
通讯作者: 余小林 E-mail:xlyu@zju.edu.cn
基金资助:
浙江省自然科学基金项目(编号: Y3090294)和浙江省人事厅归国留学人员启动基金(编号: J20090028)资助

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

摘要/Abstract

摘要： 脱落酸(ABA)在各个植物生长发育阶段以及植物对生物与非生物胁迫的响应过程中都发挥着重要的作用。最近研究表明, 在ABA信号转导途径中有3种核心组份：ABA受体PYR/PYL/RCAR蛋白、负调控因子2C类蛋白磷酸酶(PP2C)和正调控因子SNF1相关的蛋白激酶2(SnRK2), 它们共同组成了一个双重负调控系统—— PYR/PYL/RCAR—| PP2C—| SnRK2来调控ABA信号转导及其下游反应, 且3种核心组份在植物体内的结合方式受时空和生化等因素的影响, 通过特定组合形成的ABA信号转导复合体介导特定的ABA信号反应。文章就PYR/PYL/RCAR蛋白介导的植物ABA信号识别与转导途径的分子基础及其调控机制, 以及PYR/PYL/RCAR—PP2C—SnRK2参与的ABA信号调控网络等研究进展做一概述, 并对该领域今后的研究进行了展望。

关键词: ABA, 信号转导, PYR/PYL/RCAR蛋白, PP2C, SnRK2

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

胡帅，王芳展，刘振宁，刘亚培，余小林. PYR/PYL/RCAR蛋白介导植物ABA的信号转导[J]. 遗传, 2012, 34(5): 560-572.

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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PYR/PYL/RCAR蛋白介导植物ABA的信号转导

ABA signaling mediated by PYR/PYL/RCAR in plants

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