| 低pH、铝及钙铝比对斜生栅藻(Scenedesmus obliquus)的生理生化影响 |
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| 引用本文： | 孔繁翔,桑伟莲,胡伟.低pH、铝及钙铝比对斜生栅藻(Scenedesmus obliquus)的生理生化影响[J].环境科学,1998,19(4):56-58. |
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| 作者姓名： | 孔繁翔 桑伟莲 胡伟 |
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| 作者单位： | 南京大学环境科学与工程系污染控制与资源化研究国家重点实验室 |
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| 摘 要： | 为探讨酸沉降对生物早期伤害的机理，研究不同ＰＨ条件下，铝及钙／铝比对斜生栅藻与磷和氮营养代谢有关酶活性的影响，结果表明，铝对酸性磷酶和硝酸还原酶活性有显著抑制作用，当ＰＨ为６．８和５．２，铝２为０．７ｍｇ／Ｌ时，酸性磷酸酶活性仅分别为对照组的４６％和５６％，而硝酸还原酶活性仅为对照组的３７％和３０％当培养基中适当量的钙离子，会一定程度保护藻细胞中这２个酶活性不受低ＰＨ及铝的伤害，钙的缓解作用取决于
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| 关 键 词： | 斜生栅藻 生理生化影响 植物监测 铝钙比 PH值 |
| 收稿时间： | 1997/10/24 0:00:00 |
Biochemical Responses of Scenedesmus obliquus to Low pH,Al and Ratio of Ca to Al |
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| Kong Fanxiang,Sang Weilian and Hu Wei.Biochemical Responses of Scenedesmus obliquus to Low pH,Al and Ratio of Ca to Al[J].Chinese Journal of Environmental Science,1998,19(4):56-58. |
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| Authors: | Kong Fanxiang Sang Weilian and Hu Wei |
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| Institution: | State Key Lab.of Pollution Control and Resources Reuse, Dept. of Environ.Sci. and Eng., Nanjing Univ., Nanjing 210093;State Key Lab.of Pollution Control and Resources Reuse, Dept. of Environ.Sci. and Eng., Nanjing Univ., Nanjing 210093;State Key Lab.of Pollution Control and Resources Reuse, Dept. of Environ.Sci. and Eng., Nanjing Univ., Nanjing 210093 |
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| Abstract: | The effects of low pH value,Al and various ratios of Ca to Al on the enzymes associated with the phosphorus and nitrogen in green alga Scenedesmus obliquus were studied.The results showed that the activities of acid phosphatase and nitrate reductase were significantly inhibited by Al.After treated with 0.7 mg/L Al at pH 6.8 and 5.2,acid phosphatase showed only 46% and 56% activity,nitrate reductase showed 37% and 30% activity,relative to that in the control respectively.Supply of Ca to growth medium had a protective effect on these two enzymes against Al and low pH injury.The extent of protective effect was depended on the ratio of Ca to Al.The enzymes acted as the biochemical indicators are very sensitive,and they can be used to early monitor the effects of chemical compounds on environment. |
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| Keywords: | Scenedesmus obliquus low pH Al Ca enzyme activity |
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