ABSTRACT
ABA is one of the 5 phytohormones in higher plants, which is also the most important hormone that regulateshigher plants in response to environmental stress, by ABA signal transduction. Understanding ABA signal transduction at themolecular level is crucial to biology and ecology, and rational breeding complied with corresponding eco-environmental changes.Great advancements have taken place over the past 10 years by application of the Arabidopsis experimental system. Manycomponent（剩余889字）