《生命科学》 2015, 27(2): 208-216
摘 要：摘 要：干旱、高盐以及低温作为主要的非生物胁迫在全球范围内影响了许多粮食作物的生长和产量。植物对非生物胁迫的适应性应答主要是通过复杂的信号通路改变大量下游基因表达来实现。bHLH 作为植物体内第二大类转录因子，能与E-box 顺式作用元件特异性结合，调控胁迫- 应答相关基因的表达。侧重对植物中bHLH 转录因子参与非生物胁迫信号通路的最新研究进展进行综述，以期进一步了解植物bHLH 转录因子在逆境胁迫方面发挥作用的分子机理，为基因工程调控植物应答胁迫的能力提出理论依据。
Abstract: Abstract: The growth and yield of many grain crops are influenced by drought， high salt concentration， and low temperature， which are main abiotic stress factors throughout the world. The adaptive response of plants to abiotic stress is realized mainly through complex signaling pathways changing the expressions of many downstream genes. As the second largest category of transcription factors， the bHLH transcription factors in plants could regulate the expression of the stress-responsive genes with the specific binding to the E-box cis-acting element in their promoters. In this paper， the new progress of plant bHLH transcription factors involved in abiotic stress signaling pathways is reviewed. We hope to further understand the molecular mechanisms of the plants bHLH transcription factors functioning under environmental stress， so as to provide theoretical basis for regulating the stress-responsive capability of plant through the genetic engineering.
