Ye Nenghui, Jia Liguo, Zhang Jianhua
Department of Biology, Hong Kong Baptist University, Hong Kong, China.
Department of Biology, Hong Kong Baptist University, Hong Kong, China ; School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China.
Rice (N Y). 2012 Feb 27;5(1):1. doi: 10.1186/1939-8433-5-1. eCollection 2012.
Ever since its discovery, abscisic acid (ABA) has been intensively studied due to its versatile functions in plant developmental and physiological processes. Many signaling details of ABA have been well elucidated and reviewed. The identification of ABA receptors is a great breakthrough in the field of ABA study, whereas the discovery of ABA transporter has changed our concept that ABA is delivered solely by passive transport. The intensity of ABA signaling pathway is well known to be controlled by multi-regulators. Nonetheless, the interaction and coordination among ABA biosynthesis, catabolism, conjugation and transportation are seldom discussed. Here, we summarize the biological functions of ABA in response to different stresses, especially the roles of ABA in plant defense to pathogen attack, and discuss the possible relationships of these determinants in controlling the specificity and intensity of ABA signaling pathway in the rice.
自脱落酸（ABA）被发现以来，因其在植物发育和生理过程中的多种功能而受到深入研究。ABA的许多信号转导细节已得到充分阐明和综述。ABA受体的鉴定是ABA研究领域的一项重大突破，而ABA转运蛋白的发现改变了我们认为ABA仅通过被动运输传递的观念。众所周知，ABA信号通路的强度受多种调节因子控制。然而，ABA生物合成、分解代谢、共轭作用和运输之间的相互作用与协调却很少被讨论。在此，我们总结了ABA在应对不同胁迫时的生物学功能，尤其是ABA在植物抵御病原体攻击中的作用，并探讨了这些决定因素在控制水稻ABA信号通路特异性和强度方面可能存在的关系。
