Molecular Transduction Mechanism of Plant Hormone Abscisic Acid(ABA)

Phytohorme abscisic acid(ABA)plays a pivotal role in various processes involved in seeds germination and maturation,plant flowering and organ senescence.Study on how ABA signals are perceived and relayed is necessary for dissecting its molecular functions in higher plant.The functions of accepting ABA signal and activating related downstream component so as to complete physiological function were elaborated through introducing the action modes of FCA,ABAR/CHLH),GCR2,GTG1/GTG2 and PYR1/PYL/RCAR in perceiving ABA's signal.