果实中脱落酸的研究进展与展望  

Research Advances and Prospects of ABA in Fleshy Fruit

作　　者：祝军[1] 柴璐[2] 侯柄竹[2] 沈元月[2] 郭家选[2] 

机构地区：[1]青岛农业大学园艺学院,山东青岛266109 [2]北京农学院植物科学技术学院,北京102206

出　　处：《园艺学报》2015年第9期1664-1672,共9页Acta Horticulturae Sinica

基　　金：国家自然科学基金项目(31471837);北京市属高等学校创新团队建设与教师职业发展计划项目(IDHT20140509);"十二五"国家科技支撑计划项目(2013BAD02B00)

摘　　要：综述了果实中脱落酸(abscisic acid,ABA)的生理作用、代谢及信号转导的研究进展,并提出了果实中ABA从产生到作用的分子机制。果实中ABA的积累主要受4种关键酶的调控,包括NCEDs、CYP707As、GTs和BGs。在果实成熟过程中,ABA信号的启动是通过PYRs等受体蛋白感知,并通过ABI1和Sn RK2等蛋白的可逆磷酸化作用将信号传递给下游转录因子和顺式元件,最终促发果实软化、糖分积累及着色等成熟相关基因的表达。进一步深入研究ABA调控果实成熟的信号转导分子机制及ABA、糖和乙烯交叉调控网络是未来重要的研究领域。This review summarizes abscisic acid（ABA）physiological function,metabolism and signaling transduction,and provides insight into the molecular mechanism of ABA from production to action. ABA accumulation in fruit is mainly regulated by four key enzymes,including NCEDs,CYP707 As,GTs and BGs. In the processes of fruit ripening,ABA signal is perceived by some receptor proteins,such as PYRs,in turn is transmitted to the downstream transcription factors and cis-elements through protein reversible phosphorylation of ABI1 and Sn RK2 to trigger the expression of the genes related to fruit ripening,such as softening,sugar accumulation and coloration. The molecular mechanisms of ABA in the regulation of fruit ripening and regulatory network of ABA,sugar and ethylene will be important research area in the future.

关 键 词：果实发育和成熟 脱落酸 代谢 信号转导 

分 类 号：S6[农业科学—园艺学]