Research Progress on Abscisic Acid and Plant Abiotic Stress Tolerance

As an important plant hormone,abscisic acid(ABA)plays a crucial role in abiotic stress response and tolerance of plants.In this paper,the biosynthesis and catabolism of ABA,the major ABA signaling pathway and its role in regulating plant tolerance to abiotic stress were described;and also ABA synthesis and molecular mechanisms and response to abiotic stress ABA generate resistance and other aspects of the molecular mechanisms in the regulation of the plant were discussed.