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环境刺激的信号转导是植物信号转导的一个重要研究方向。热激反应(heat-shockresponse,HSR)是动植物细胞或器官在遇到外界热刺激时所产生的一种保护性反应,是正常的蛋白质合成受阻时产生热激蛋白(heat-shockprotein,HSP)的一种细胞生理活动,其表达通过热休克转录因子(heat-shock factor,HSF)来进行调控[1]。编码热激蛋白基因的启动子区域存在着一段保守的DNA序列,是热休克转录因子的结合位点(heat-shockelement,HSE)。当植物受到外界的热刺激时,HSF可以与HSE特异性结合,激活热激蛋白基因的表达,
Environmental stimuli signal transduction is an important research direction of plant signal transduction. Heat-shock response (HSR) is a protective reaction of plant cells or organs in the face of external thermal stimuli. It is the result of heat shock protein (HSP) production when normal protein synthesis is blocked. A cellular physiological activity whose expression is regulated by the heat shock factor (HSF) [1]. There is a conserved DNA sequence in the promoter region of the gene encoding heat shock protein, which is the heat-shock receptor (HSE). When plants are stimulated by external heat, HSF can bind specifically with HSE to activate the expression of heat shock protein gene,