拟南芥转录因子CBF的冷调控机制研究进展

Progress on CBF Transcription Factor in Cold Tolerance of Arabidopsis thaliana

拟南芥中CBF(C-repeat binding factor)转录因子在抗寒性方面起重要作用,低温可诱导CBF转录因子的表达。CBF转录因子能够特异结合启动子中含有CRT/DRE(C-repeat/dehydration responsive element)的顺式元件,激活COR等基因的表达,从而增强植株抗寒能力,对调控逆境诱导基因的表达具有非常重要的作用。对CBF转录因子的结构特点、功能、表达调控以及与CBF相关的其它低温调节途径进行了综述,为提高植物综合抗逆性的研究提供参考。

In Arabidopsis thaliana ,CBF （C-repeat binding factor） transcription factor played an important role in the process of cold resistance. Low temperature could induce the expression of CBF transcription factor,which specifically bound to the promoters containing CRT/DRE （C-repeat/dehydration responsive element） cis-acting elements,and then activated the expression of COR gene. As a result the resistance to cold was enhanced. This review introduced the structure and function of CBF transcription factor and other transcription factors,so it thus shows a very broad application future in aspect of increasing strong toler- ance to stress.