植物热激转录因子家族的多样性和复杂性

doi:10.11924/j.issn.1000-6850.casb17120040

摘要/Abstract

摘要： 植物热激转录因子(Heat shock transcription factor,Hsf)能够与热激蛋白或其他相关蛋白启动子区域的热激元件结合而直接激活下游基因的表达,从而启动热激反应,因此成为生物体在热胁迫下基因转录激活信号转导通路中关键的调节因子,在传递热胁迫信号以及提高植物耐热性方面发挥重要的调控功能。全面开展植物Hsf研究,在解析基因特性、功能及其网络调控机制的基础上,获得强效Hsf基因,进而通过现代生物技术对植物耐热性进行遗传改良从而创制有利用价值的种质资源,对于植物耐热性机理及耐热育种均具有重要的理论和实践意义。植物热激转录因子家族成员多、特性和功能多样,调控机制复杂。前人相关研究主要集中于模式植物,近年来在大田作物上逐渐有所报道。本文就近年来相关方面的研究进行综述和展望,以期为解析植物Hsf家族提供理论和技术基础,同时推动植物耐热性遗传改良的快速发展。

关键词: 马蓝, 马蓝, 次生代谢产物, 酚类, 萜类, 含氮化合物

Abstract: Plant heat shock transcription factor (Hsf), as a kind of crucial regulators in network regulation, can respond to multiple biological stresses and abiotic stresses, and confer various tolerances to plants. Hsf research in plant mainly focuses on model plant, the most research objectives are class A members. The researches on crop Hsf families are relatively lagging, and gradually develop to be hot fields in recent years. In this paper, the structure, classification, functional diversity and regular mechanism of Hsf in plant are reviewed. It emphatically points out that the pleiotropic roles of plant Hsf could not only benefit the adaptation to single stress environment, but also enable plants to easily adapt to the cross stress environments which are more similar to natural environment, so Hsfs are a kind of ideal genes for crop genetic improvement of stress tolerances. In future, based on fully understanding of classification and characteristics of crop Hsf families, it is necessary to strengthen the regulatory functions of Hsf to various adversities and common stresses, and explain the specificity of spatial and temporal expression and network regulation mechanism of Hsf families. At the same time, major aspects and technological difficulties in the deep research are discussed in this review.

段硕楠,李国良,张园园,郭秀林. 植物热激转录因子家族的多样性和复杂性[J]. 中国农学通报, 2018, 34(35): 36-43.

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