青菜幼苗体内几种保护酶的活性对Pb、Cd、Cr胁迫的反应研究

应用生态学报 ›› 2002, Vol. ›› Issue (4): 510-512.

• 研究论文 • 上一篇

青菜幼苗体内几种保护酶的活性对Pb、Cd、Cr胁迫的反应研究

任安芝, 高玉葆, 刘爽

南开大学生物学系, 天津 300071

收稿日期:1999-03-11 修回日期:1999-11-11 出版日期:2002-04-15
通讯作者: 高玉葆,E-mail:ybgao@nankai.edu.cn
基金资助:
教育部高校骨干教师资助计划项目(A94103);南开大学科技发展基金资助项目.

Response of some protective enzymes in Brassica chinensis seedlings to Pb²⁺, Cd²⁺ and Cr⁶⁺ stresses

REN Anzhi, GAO Yubao, LIU Shuang

Department of Biology, Nankai University, Tianjin 300071

Received:1999-03-11 Revised:1999-11-11 Online:2002-04-15

摘要/Abstract

Abstract: Seedlings of Brassica chinensis were cultured in 1/2 Hoagland solution for seven days before they were treated with Pb²⁺, Cd²⁺ and Cr⁶⁺. The activities of their superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) responded to the increasing concentrations of the metals, and the responsive characters varied with different metals and different durations of metal treatments. CATactivity decreased with the increase of metal concentrations, and the order of its sensitivity to the three metals was Cd²⁺>Cr⁶⁺> Pb²⁺. SOD activity followed a rise-fall pattern along metal concentration gradient, but its sensitivity decreased with the duration of metal treatment. There was an obvious difference in PODactivity to different metals, only when the treatment was proceeded for a period of time.

Key words: Brassica chinensis, Protective enzymes, Lead, Cadmium, Chromium

中图分类号:

Q945
X171.5

任安芝, 高玉葆, 刘爽. 青菜幼苗体内几种保护酶的活性对Pb、Cd、Cr胁迫的反应研究[J]. 应用生态学报, 2002, (4): 510-512.

REN Anzhi, GAO Yubao, LIU Shuang . Response of some protective enzymes in Brassica chinensis seedlings to Pb²⁺, Cd²⁺ and Cr⁶⁺ stresses[J]. Chinese Journal of Applied Ecology, 2002, (4): 510-512.

参考文献

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青菜幼苗体内几种保护酶的活性对Pb、Cd、Cr胁迫的反应研究

Response of some protective enzymes in Brassica chinensis seedlings to Pb²⁺, Cd²⁺ and Cr⁶⁺ stresses

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青菜幼苗体内几种保护酶的活性对Pb、Cd、Cr胁迫的反应研究

Response of some protective enzymes in Brassica chinensis seedlings to Pb2+, Cd2+ and Cr6+ stresses

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Response of some protective enzymes in Brassica chinensis seedlings to Pb²⁺, Cd²⁺ and Cr⁶⁺ stresses