摘要
干旱是严重影响植物生长发育的重要环境胁迫因子之一。干旱能影响植物的水分状态,使植物缺水遭受伤害。近年来,相继从拟南芥等植物中克隆出了一些受干旱诱导的基因,如蛋白激酶基因、光合基因、渗透调节基因、功能蛋白基因(如LEA基因)等。干旱等胁迫信号经历一系列的传递过程,最后诱导这些特定基因的表达。在植物体中,可能存在依赖ABA型和不依赖ABA型两条干旱信号的传递途径。近年来从高等植物中分离出一系列调控干旱相关基因表达的转录因子,通过转录因子之间以及与其它相关蛋白之间的相互作用,激活或抑制干旱等胁迫因子诱导的基因表达。
Drought stress is generally referred to situations where insufficient water availability limits plant growth and development.The responses to drought stress are complex in plant.In this review,some drought stressresponsive genes in plants have been reported and their possible roles have been discussed.Studies on the regulation of drought stressresponsive genes have made progress in recent years and some results have also been reported here.These studies aim to understand how plant cells perceive the drought stress signal and transduce this signal to produce stressreponsive gene expression.
出处
《西北植物学报》
CAS
CSCD
2003年第1期151-157,共7页
Acta Botanica Boreali-Occidentalia Sinica
基金
中国科学院沙坡头沙漠实验站开放基金(200015)
中国科学院百人计划基金资助(39670070)
