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.