脱落酸
调节器
生物
信号转导
非生物胁迫
激酶
磷酸化
细胞生物学
蛋白激酶A
生物化学
基因
作者
Tianjun Zhou,Fang-Zhan Wang,Zhenning Liu,Ya-Pei Liu,Xiaolin Yu
出处
期刊:Yichuan
[China Science Publishing & Media Ltd.]
日期:2012-06-27
卷期号:34 (5): 560-572
被引量:9
标识
DOI:10.3724/sp.j.1005.2012.00560
摘要
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.
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