摘要
当植物受到干旱胁迫时就会感受到水分的变化,表达产生各种耐旱蛋白包括耐旱功能蛋白、转录因子和激酶,从而抵御干旱胁迫。目前已经明确的耐旱信号途径主要有4条:其中2条是ABA依赖的信号途径,另外2条是不依赖于ABA的信号途径。DREB转录因子是不依赖于ABA的信号途径中的一个重要的转录因子。由于DREB转录因子以及这一信号途径在各种植物中具有很高的保守性,研究这一信号途径对于改良作物的耐旱性以及了解植物抵御干旱的信号交叉联系具有重要意义。综述了近几年来在DREB基因的克隆、表达调控以及遗传转化方面的研究进展,并对未来的发展进行了展望。
When plant is being a deficiency of water,it can produce various proteins including function proteins,transcription factors and protein kinase to resist drought stress.At least,there are four signal pathways existing in plant.Two of them are ABA dependent signal pathway,and the others are ABA independent.DREB transcriptional factors are of importance in ABA independent signal pathway.As it features high conservation,the DREB transcriptional factors and the signal pathway are significant in improving crop drought tolerance and understanding the cross talk of signal pathways.In this paper,the cloning,transformation and expressive regulation of DREB gene were summarized and the future study about DREB gene was outlined as well.
出处
《生物技术通报》
CAS
CSCD
2008年第6期1-6,共6页
Biotechnology Bulletin
基金
中国科学院知识创新工程重要方向项目(KZCX3-SW-434)
湖南省“十一五”重大科技专项(超级杂交水稻技术研究和示范)
关键词
作物
DREB转录因子
耐旱
Crop DREB transcription factor Drought tolerance
