生物钟对植物非生物胁迫应答调控的进展  

Progress of Circadian Clock Regulation of Abiotic Stress Response in Plants

作　　者：刘璇 张丽[1] 巩檑[1] 聂峰杰[1] 甘晓燕[1] 宋玉霞[1] Liu Xuan;Zhang Li;Gong Lei;Nie Fengjie;Gan Xiaoyan;Song Yuxia(Agricultural Biotechnology Centre of Ningxia Academy of Agriculture and Forestry Science,Yinchuan,750002)

机构地区：[1]宁夏农林科学院农业生物技术研究中心

出　　处：《基因组学与应用生物学》2019年第9期4160-4166,共7页Genomics and Applied Biology

基　　金：国家自然科学基金项目(31560053);宁夏自然科学基金项目(NZ16123; NZ16122; NZ17124);宁夏农业育种专项(2014NYYZ01);宁夏农林科学院科技创新先导资金项目(NKYJ-17-19D; WHZC-2017002)共同资助

摘　　要：生物钟是一种控制植物节律性生长发育的内源性系统,可以辅助植物预知周围光照、温度和湿度环境的变化,以其核心振荡器为主要调控元件,通过细胞内关键基因的表达水平、蛋白互作从而形成信号转导通路和反馈调节回路,指导植物作出相应的表型调整,对提高植物在逆境条件下的生存适应能力具有重要的作用。本研究综述了植物在寒冷、干旱、高盐的极端环境下,生物钟关键基因CCA1/LHY、PRRs和GI等参与胁迫应答的调控方式,以及在调控过程中生物钟对脱落酸、乙烯、细胞分裂素和茉莉酸合成及代谢的影响。以植物的基因功能和激素调节为切入点,为运用现代分子生物技术手段提高植物非生物抗逆性的研究提供理论依据。Circadian clock is an endogenous biological system, which is able to control the rhythmic growth and development of plants. It can help plants predict the changes of light, temperature and humidity around them. The key regulatory element of circadian clock is called core oscillator. The signal transduction pathway and feedback regulation loop were formed by the expression level and protein interaction of the key genes in cell, and the corresponding phenotype adjustment was directed to the plant. It plays an important role in improving the survival and adaptability of plants under stress conditions. Here, from the aspect of cold, drought and high salinity stress in plants, circadian clock key genes CCA1/LHY, PRRs and GI as well as crucial signal pathways in the response regulation were summerized in this paper. Morever, the effects of circadian clock on abscisic acid, ethylene, cytokinin and jasmonic acid metabolism were also introduced. Based on the gene function and hormone regulation, this paper provides a theoretical basis for the application of modern molecular biotechnology to improve the abiotic stress resistance in plants.

关 键 词：生物钟 非生物胁迫 逆境应答 激素调控 

分 类 号：Q945.78[生物学—植物学]