Abscisic acid(ABA) is an important plant hormone that regulates plant growth, development and in response to environmental stresses. In the model plant Arabidopsis thaliana, the ABA reaction and its mechanism were studied. The phosphorylation of key regulators has been shown to play a fundamental role in the initialation of ABA responses. In terms of the molecular basis of core network of early ABA signaling, phosphorylation of ABI5-like bZIP transcription factors(ABI5 and ABFs) by SnRK1-or SnRK2-type proei...