Hg2+胁迫对小麦幼苗POD、CAT和SOD同工酶的影响
Effects of Hg2+ on Isozymes of Peroxidase, Catalase and Superoxide Dismutase in Wheat Seedlings
王琳 1王林嵩 1王丽 1孙向东 1宗秀征 1李芳军 1高雅1
作者信息
- 1. 河南师范大学生命科学学院,河南新乡,453007
- 折叠
Abstract
[Objective] This work was aimed to explore the mechanism of Hg2+ toxicity on plants. [Method]Activities of peroxidase(POD), catalase (CAT) and superoxide dismutase(SOD) were investigated in wheat (Triticum aestivum L. )seedlings under Hg2+ stress at different concentrations. [Re-pared to POD and SOD. [Conclusion] The toxic effect was related to the concentration of Hg2+ (0.10 mmol/L). The higher concentration of Hg2+ could affect the expression of POD, CAT, and SOD isozymes in the leaves, roots of wheat seedlings and germinated seeds, which further affect the normal metab-olism of membrane lipid and inhibit the growth of wheat seedlings at last.
关键词
Wheat/Hg2+ stress/Peroxidase/Catalase/Superoxide dismutase/IsozymeKey words
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出版年
2008
国家科技期刊平台
NSTL
万方数据