| 低pH、铝和钙离子对菌根菌赭丝膜伞的毒性和超氧化物歧化酶的影响 |
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| 引用本文： | 尹大强,金洪钧,孙爱龙,孔繁翔,庄苏星,李宇璟.低pH、铝和钙离子对菌根菌赭丝膜伞的毒性和超氧化物歧化酶的影响[J].生态学杂志,1997,8(6):659-662. |
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| 作者姓名： | 尹大强 金洪钧 孙爱龙 孔繁翔 庄苏星 李宇璟 |
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| 作者单位： | 南京大学环境科学与工程系,南京 210093 |
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| 基金项目： | 国家自然科学基金资助项目(39470150) |
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| 摘 要： | 应用急性毒性生物测试方法,研究了低pH和铝离子对菌根菌赭丝膜伞(Cortinariusrussus)的毒性效应.试验表明,在pH为6.8、5.5和4.3,铝离子在低pH(4.3)时对菌根菌毒性最强,96h EC50为5.05mg·L-1,菌根生长受到明显的抑制;低pH和铝离子能诱导菌根菌体内SOD,与对照组相比,菌根菌体内SOD活性明显升高;加入钙离子后,SOD活性下降,并随Ca的投加浓度增加,SOD活性逐渐降低,表明在低pH条件下,钙离子和铝离子对菌根的影响具有拮抗作用.
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| 关 键 词： | 超氧化物歧化酶(SOD) 生物标志 酸雨 铝 钙 赭丝膜伞 |
| 收稿时间： | 1997-03-10 |
Effect of low pH,Al and Ca on toxicity and superoxide dismutase(SOD) activity of Cortinarius russus |
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| Yin Daqiang,Jin Hongjun,Sun Ailong,Kong Fanxiang,Zhuang Suxing,Li Yujing.Effect of low pH,Al and Ca on toxicity and superoxide dismutase(SOD) activity of Cortinarius russus[J].Chinese Journal of Ecology,1997,8(6):659-662. |
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| Authors: | Yin Daqiang Jin Hongjun Sun Ailong Kong Fanxiang Zhuang Suxing Li Yujing |
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| Institution: | Nanjing University, Nanjing 210093 |
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| Abstract: | In this paper, acute bioassay method was used to study the toxic effect of low pHand aluminum on mycorrhizal fungi (Cortinarius russus). At pH 4.3, the aluminum toxicity was the strongest, with a 96 h EC50 of 5.05 mg·L-1, and the growth of Cortinarius russus was obviously inhibited. The SOD activity of Cortinarius russus was induced by low pH and aluminum, and increased obviously, but decreased when calcium was added, and decreased with increasing calcium concentration. At low pH, there exists an antagonism between calcium and aluminum. |
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| Keywords: | Superoxide dismutase(SOD) Biomarker Acid rain Aluminum Calcium Cortinarius russus |
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