摘要
植物激素脱落酸(abscisic acid,ABA)在植物的生长、发育和胁迫反应方面起重要的调控作用,其信号转导通路由4个核心组分共同组成一个双重负调控系统(PYR/PYL/RCAR—|PP2C—|SnRK2—ABF/AREB),调控ABA应答反应。本文在综述和分析ABA信号通路4个核心组分的起源与进化的基础上,初步提出ABA信号通路的起源与进化路径:A类PP2C、第Ⅲ亚类SnRK2以及转录因子AREB/ABF在水生植物轮藻中已经进化产生,当陆生植物进化产生ABA受体PYR/PYL/RCAR后,即与其它3个组分形成完整的ABA信号通路。在植物进化过程中,ABA信号通路4个核心组分各家族成员的数量(亚类)呈递增趋势。
Abscisic acid（ABA） is a plant hormone that plays critical roles in growth and development as well as in response to biotic and abiotic stresses.It is well known that ABA signal transduction pathway consists of four core components,and these proteins construct a double negative regulatory system（PYR/PYL/RCAR— ｜ PP2C— ｜ SnRK2—ABF/AREB） to regulate ABA signal responses in plant cells.Based on the overview and analysis about the origin and evolution of four core components that participate in ABA signal transduction pathway,we speculate that group A PP2 C,subclass ⅢSnRK2 and ABF/AREB have existed in Klebsormidium flaccidum that belongs to aquatic algae.When the ABA receptor PYR/PYL/RCAR has been evolved in terrestrial plants,a complete ABA signaling pathway is formed.In addition,the number of each family member in ABA signaling pathway tends to increase during evolution.
出处
《中国生物化学与分子生物学报》
CAS
CSCD
北大核心
2016年第8期856-863,共8页
Chinese Journal of Biochemistry and Molecular Biology
基金
国家自然科学基金项目(No.31171167)
山西省自然科学基金项目(No.2009011044-1)资助~~
关键词
脱落酸
信号转导通路
核心组分
起源与进化
abscisic acid（ABA）
signal transduction pathway
core components
origin and evolution
