生态学报2001，Vol.21Issue(4)：579-583,5.
UV-B辐射对蚕豆叶膜脂过氧化的影响及其机制
The effect of UV-B radiation on membrane lipid peroxidation and mechanisms in broad bean leaves
陈拓 1安黎哲 1冯虎元 2杨景宏 2王勋陵2
作者信息
- 1. 中国科学院寒区旱区环境与工程研究所,
- 2. 兰州大学生命科学院,
- 折叠
摘要
Abstract
The changes and mechanism of membrane lipids in the broad bean leaves exposed to 0(CK)、8.82kJ/m2(T1) and 12.6kJ/m2（T2） of UV-B radiation were observed respectively.The results showed that the contents of malonaldehyde (MDA) and H2O2 were increased,and that of index of unsaturated fatty acid (IUFA) was decreased,lipoxygenase (LOX) activity was enhanced and superoxide dismutase (SOD) activity was slightly changed after UV-B radiation treatment.The diamine putrescine (Put),the polyamine spermidine (Spd) and spermine (Spn) were accumulated in the broad bean leaves after 7 days of UV-B radiation treatment and they were returned to normal after 21 days.Those results indicate that the membrane lipid peroxidation catalyzed by LOX and caused by oxygen radiacals,play an important role in the damage of the membrane structure.The changes of SOD activity and polyamine content in the broad bean leaves may be an adaptive physiological response to the UV-B radiation treatment.关键词
UV-B辐射/蚕豆/膜脂过氧化/多胺引用本文复制引用
陈拓,安黎哲,冯虎元,杨景宏,王勋陵..UV-B辐射对蚕豆叶膜脂过氧化的影响及其机制[J].生态学报,2001,21(4):579-583,5.
