植物细胞一氧化氮信号转导研究进展

被引:22
作者
王鹏程
杜艳艳
宋纯鹏
机构
[1] 河南大学生命科学学院,河南省植物逆境生物学重点实验室
关键词
生长发育; 一氧化氮; 活性氧; 信号转导; 胁迫应答;
D O I
暂无
中图分类号
Q946 [植物生物化学];
学科分类号
071001 ;
摘要
一氧化氮(nitric oxide,NO)作为重要的信号分子,调控植物的种子萌发、根形态建成和花器官发生等许多生长发育过程,并参与气孔运动的调节以及植物对多种非生物胁迫和病原体侵染的应答过程。已经知道,精氨酸依赖的NOS途径和亚硝酸盐依赖的NR途径是植物细胞NO产生的主要酶促合成途径。NO及其衍生物能够直接修饰底物蛋白的金属基团、半胱氨酸和酪氨酸残基,通过金属亚硝基化、巯基亚硝基化和Tyr-硝基化等化学修饰方式,调节靶蛋白的活性,并影响cGMP和Ca2+信使系统等下游信号途径,调控相应的生理过程。最新的一些研究结果也显示,MAPK级联系统与NO信号转导途径之间存在复杂的交叉调控。此外,作为活跃的小分子信号,NO和活性氧相互依赖并相互影响,共同介导了植物的胁迫应答和激素响应过程。文章综述了植物NO信号转导研究领域中一些新的研究进展,对NO与活性氧信号途径间的交叉作用等也作了简要介绍。
引用
收藏
页码:517 / 525
页数:9
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