Sah Saroj K, Reddy Kambham R, Li Jiaxu
Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University Mississippi State, Mississippi, MS, USA.
Department of Plant and Soil Sciences, Mississippi State University Mississippi State, Mississippi, MS, USA.
Front Plant Sci. 2016 May 4;7:571. doi: 10.3389/fpls.2016.00571. eCollection 2016.
Abiotic stress is a primary threat to fulfill the demand of agricultural production to feed the world in coming decades. Plants reduce growth and development process during stress conditions, which ultimately affect the yield. In stress conditions, plants develop various stress mechanism to face the magnitude of stress challenges, although that is not enough to protect them. Therefore, many strategies have been used to produce abiotic stress tolerance crop plants, among them, abscisic acid (ABA) phytohormone engineering could be one of the methods of choice. ABA is an isoprenoid phytohormone, which regulates various physiological processes ranging from stomatal opening to protein storage and provides adaptation to many stresses like drought, salt, and cold stresses. ABA is also called an important messenger that acts as the signaling mediator for regulating the adaptive response of plants to different environmental stress conditions. In this review, we will discuss the role of ABA in response to abiotic stress at the molecular level and ABA signaling. The review also deals with the effect of ABA in respect to gene expression.
非生物胁迫是未来几十年满足全球粮食需求的农业生产面临的主要威胁。在胁迫条件下，植物会减缓生长和发育进程，最终影响产量。在胁迫条件下，植物会形成各种胁迫机制来应对胁迫挑战的强度，尽管这不足以保护它们。因此，人们已经采用了许多策略来培育耐非生物胁迫的作物，其中，脱落酸（ABA）植物激素工程可能是一种选择方法。ABA是一种类异戊二烯植物激素，它调节从气孔开放到蛋白质储存等各种生理过程，并使植物适应许多胁迫，如干旱、盐和冷胁迫。ABA也被称为一种重要的信使，作为信号介质调节植物对不同环境胁迫条件的适应性反应。在这篇综述中，我们将在分子水平上讨论ABA在应对非生物胁迫中的作用以及ABA信号传导。该综述还涉及ABA对基因表达的影响。
