油菜素内酯调控植物响应非生物逆境胁迫的生理机制  

The physiological mechanisms of exogenous brassinolide regulating abiotic stresses in plants:a review

作　　者：权梦萍 徐佳慧 尹佳茗 杨志昆 谭伟明[1] Quan Mengping;Xu Jiahui;Yin Jiaming;Yang Zhikun;Tan Weiming(College of Agronomy and Biotechnology,China Agricultural University,Beijing 100193,China)

机构地区：[1]中国农业大学农学院,北京100193

出　　处：《植物保护学报》2023年第1期22-31,共10页Journal of Plant Protection

基　　金：国家重点研发计划(2016YFD0300300);教育部产学合作协同育人项目(20190220001)。

摘　　要：油菜素内酯属于甾体类激素中的油菜素甾醇类物质,是其生物合成中产生的活性副产物,对植物生长发育具有重要的调节作用。在非生物胁迫条件下,外源施用油菜素内酯可以增强植物的抗氧化系统,增加渗透物质水平,维持内源激素平衡,稳定离子和水分平衡,改善气体交换属性和光合作用,最终减轻逆境危害并促进植物生长。该文综述油菜素内酯对非生物胁迫下植物生长、生理调节的影响及调控途径,对油菜素内酯提高植物抗逆境能力的未来研究方向进行展望。Brassinolide is one of brassinosterols,a group of steroid hormones.It is an active by-product of brassinosterols’biosynthesis and plays an important role in regulating plant growth and development.Under abiotic stress,exogenous application of brassinolide can enhance plant antioxidant system,increase osmotic material level,maintain endogenous hormone balance,stabilize ion and water balance,improve gas exchange properties and photosynthesis,and therefore reduce stress damages and promote plant growth.In this paper,the effects of brassinolide on plant growth and physiological regulation under abiotic stresses were reviewed,and the possible research directions of brassinolide in promoting plant resistance to stresses were proposed.

关 键 词：油菜素内酯 光合作用 抗氧化系统 渗透调节系统 激素平衡 

分 类 号：Q945.78[生物学—植物学]