光氧化胁迫条件下叶绿体中活性氧的产生、清除及防御(英文)

被引:15
作者
冯建灿
毛训甲
胡秀丽
机构
[1] 河南农业大学
[2] 南京农业大学
关键词
活性氧; 叶绿体; 光氧化胁迫;
D O I
暂无
中图分类号
Q945.11 [光合作用、碳素同化作用];
学科分类号
摘要
活性氧(ROS)具有双重作用,高浓度引起细胞损伤,低浓度起保护作用。在光氧化胁迫条件下,光合作用高能态的反应与O2丰富供应使叶绿体成为活性氧丰富的来源。当ROS的积累超过抗氧化剂防护系统清除能力,叶绿体及细胞不可逆的光氧化损伤就会出现。而高等植物的质粒是半自主的细胞器,有它们自己的基因组学及转录、翻译机制来控制ROS生成、保护光合作用机构免受光氧化损伤。因此,本文就光氧化胁迫期间,叶绿体中ROS的生成、功能与防护机制进行了综述。
引用
收藏
页码:1487 / 1498
页数:12
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