共 106 条
ABA signal transduction at the crossroad of biotic and abiotic stress responses
被引:518
作者:
Lee, Sung Chul
[2
]
Luan, Sheng
[1
,3
]
机构:
[1] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA
[2] Chung Ang Univ, Sch Biol Sci, Program BK21, Seoul 156756, South Korea
[3] Chonnam Natl Univ, DBST WCU Program, Kwangju, South Korea
基金:
新加坡国家研究基金会;
美国国家科学基金会;
关键词:
drought;
hormones;
pathogens;
stomata;
ABSCISIC-ACID BIOSYNTHESIS;
PROTEIN PHOSPHATASE 2C;
ANION CHANNEL SLAC1;
GENE-EXPRESSION;
9-CIS-EPOXYCAROTENOID DIOXYGENASE;
ANTAGONISTIC INTERACTION;
DISEASE RESISTANCE;
NEGATIVE REGULATOR;
STOMATAL CLOSURE;
PLASMA-MEMBRANE;
D O I:
10.1111/j.1365-3040.2011.02426.x
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
Abscisic acid (ABA) regulates key processes relevant to seed germination, plant development, and biotic and abiotic stress responses. Abiotic stress conditions such as drought induce ABA biosynthesis initiating the signalling pathways that lead to a number of molecular and cellular responses, among which the best known are the expression of stress-related genes and stomatal closure. Stomatal closure also serves as a mechanism for pathogen defence, thereby acting as a platform for crosstalk between biotic and abiotic stress responses involving ABA action. Significant advances in our understanding of ABA signal transduction have been made with combination of approaches including genetics, biochemistry, electrophysiology and chemical genetics. Molecular components associated with the ABA signalling have been identified, and their relationship in the complex network of interactions is being dissected. We focused on the recent progress in ABA signal transduction, especially those studies related to identification of ABA receptors and downstream components that lead ABA signal to cellular response. In particular, we will describe a pathway model that starts with ABA binding to the PYR/PYL/RCAR family of receptors, followed by inactivation of 2C-type protein phosphatases and activation of SnRK2-type kinases, and eventually lead to activation of ion channels in guard cells and stomatal closure.
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页码:53 / 60
页数:8
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