New developments in abscisic acid perception and metabolism

被引:103
作者
Verslues, Paul E.
Zhu, Jian-Kang
机构
[1] Univ Calif Riverside, Inst Integrat Genome Biol, Riverside, CA 92521 USA
[2] Univ Calif Riverside, Dept Bot, Riverside, CA 92521 USA
关键词
D O I
10.1016/j.pbi.2007.08.004
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Abscisic acid is a powerful signaling molecule that accumulates in response to abiotic stress. However, no potential receptors that could perceive this increase in abscisic acid had been identified until recent reports of three abscisic acid binding proteins: the nuclear protein Flowering Time Control Locus A, the chloroplast protein Magnesium Protoporphyrin-IX Chelatase H subunit, and the membrane-associated protein G Protein Coupled Receptor 2. Abscisic acid metabolism also has a new and prominent component with the identification of a beta-glucosiclase capable of releasing biologically active abscisic acid from inactive abscisic acid-glucose ester in a stress-inducible manner. These observations refocus our attention on the metabolism underlying abscisic acid accumulation, sites of abscisic acid perception, and delivery of abscisic acid to those sites.
引用
收藏
页码:447 / 452
页数:6
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