DREB转录因子在植物抗逆胁迫中的作用机理及应用研究进展  

Mechanism and Application Prospect of DREB Transcription Factors in Plant Stress Resistance

作　　者：倪志勇[1,2] 徐兆师[1] 李连城[1] 陈明[1] 马有志[1] 

机构地区：[1]国家农作物基因资源与基因改良重大科学工程,农业部作物遗传育种重点开放实验室,中国农业科学院作物科学研究所,北京100081 [2]新疆农业科学院核技术生物技术研究所,新疆乌鲁木齐830000

出　　处：《麦类作物学报》2008年第6期1100-1106,共7页Journal of Triticeae Crops

基　　金：国家高技术研究发展计划(863计划)项目(2007AA10Z130);国家自然科学基金项目(30700504和30700508)

摘　　要：干旱、高盐和低温等非生物胁迫严重影响植物的生长发育和作物产量。转录因子在调节植物生长发育以及对外界环境胁迫的响应方面起着重要作用。DREB转录因子含有一个保守的AP2/EREBP结构域,参与外界环境胁迫的应答响应,通过结合DRE(Dehydration responsive element)顺式作用元件,调控下游胁迫相关基因的转录表达,改良植物的抗性。本文在前人研究的基础上,综述了DREB转录因子的结构特征、介导的信号传递途径、对非生物胁迫的响应以及转基因的研究进展,旨在为作物的抗逆育种提供理论依据。Abiotic stresses, including drought, high-salinity and low-temperature, seriously affected plant growth and crop yield. Transcription factors play important roles in regulation of plant growth and development and in responses to environmental stresses. Drought responsive element-binding （DREB） proteins, containing a conserved AP2/EREBP domain, can regulate the expression of down- stream stress-related genes by specifically binding to drought-responsive elements （DREs）, and improve stress tolerance in transgenic plants. Based on previous research, the present paper reviews the structural characteristics, mediated-signal transduction pathways, responses to abiotic stresses and and their advances in transgenic plants to provide reference for crop stress-resistance breeding.

关 键 词：DREB 转录因子 信号传递 非生物胁迫 转基因 抗逆育种 

分 类 号：S512.1[农业科学—作物学] S336