| 高浓度铬对凤眼莲的伤害及膜脂过氧化作用的影响 |
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| 引用本文： | 周易勇.高浓度铬对凤眼莲的伤害及膜脂过氧化作用的影响[J].环境科学,1993,14(3):60-61. |
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| 作者姓名： | 周易勇 |
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| 作者单位： | 中国科学院水生生物研究所 武汉 |
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| 摘 要： | 为了初步探讨在高浓度重金属胁迫下凤眼莲(Eichhornia crassipes)的生理变化,通过急性实验法从活性氧伤害角度探讨铬伤害凤眼莲的机理.结果表明,在高浓度(50ppm)铬污染下,凤眼莲叶片中SOD和CAT活性以及叶绿索α的含量明显下降,组织电解质外渗率和MDA含量明显升高,与对照值之间的差异达显著水平(P<0.05);叶片中H_2O_2含量无明显变化.
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| 关 键 词： | 铬 凤眼莲 膜脂 过氧化 SOD |
| 收稿时间： | 1992/12/17 0:00:00 |
The Effects of High Concentration of Chromium on Toxicity and Peroxidation of Membrane Lipids in Leaves of Water Hyacinth |
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| Zhou Yiyong.The Effects of High Concentration of Chromium on Toxicity and Peroxidation of Membrane Lipids in Leaves of Water Hyacinth[J].Chinese Journal of Environmental Science,1993,14(3):60-61. |
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| Authors: | Zhou Yiyong |
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| Institution: | Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan 430072 |
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| Abstract: | The effects of chromium in high concentration (50ppm) on water hyacinth (Eichhornia cras-sipes) were analyzed. The tretment of the metal increased leaf electrolyte leakage and level of lipid peroxidation. The activities of supero-xide dismutase and catalase decreased on the basis of protein content. These changes in membrane permeability, lipid peroxidation and thre enzyme activities coincided with the decline in Chlorophyll-a contents. A drop in catalase activity in response to chromium treatment of water hyacinth did not result in hydrogen peroxide accumulation. |
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| Keywords: | pollution of chromium superoxide dismutase catalase hydrogen peroxide water hyacinth |
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