植物中的活性氧研究概述

被引：40

作者：

张怡

路铁刚

机构：

[1] 中国农业科学院生物技术研究所

来源：

生物技术进展 | 2011年 / 04期

关键词：

活性氧; 非生物逆境; 生物技术;

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：

活性氧作为有氧代谢的副产物不断在植物体内产生。在正常的生长环境条件下,植物将产生活性氧(reaction oxygen species,ROS)作为信号代谢分子以调控不同的代谢反应,例如病毒防御、细胞程序性死亡和气孔开闭等;当氧化胁迫发生时,胞内活性氧稳态受到严重破坏,影响作物的生长发育,从而降低作物产量及品质。为了降低因过量活性氧对植物体所造成的伤害,植物体内进化出了两种活性氧清除系统:酶清除系统和非酶清除系统。本文就此对植物在生长发育过程中ROS的产生、利弊、清除机制以及在作物改良上应用的可能性进行了系统的讨论。

引用

页码：242 / 248

页数：7

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