| Al~(3+)和阳离子型表面活性剂复合污染对玉米幼苗的影响 |
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| 引用本文： | 束良佐,朱育晓. Al~(3+)和阳离子型表面活性剂复合污染对玉米幼苗的影响[J]. 生态与农村环境学报, 2001, 17(2) |
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| 作者姓名： | 束良佐 朱育晓 |
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| 作者单位： | 淮北煤炭师范学院生物系, |
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| 摘 要： | 研究了阳离子型表面活性剂十六烷基三甲基溴化铵 (CTAB)和Al3+ 共存 ,对玉米幼苗保护酶及叶绿素含量、光合速率、蒸腾速率等的影响。结果表明 :CTAB能加剧Al3+ 对玉米幼苗的毒害作用。具体表现为使幼苗超氧化物歧化酶和过氧化物酶活性升高 ,过氧化氢酶活性下降 ,超氧阴离子产生速率增大 ,脂质过氧化作用加剧 ,质膜透性上升 ,而叶绿素含量下降。当CTAB浓度在临界胶束浓度以上时 ,光合速率及蒸腾速率急剧降低
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| 关 键 词： | 表面活性剂 Al3+ 复合污染 玉米幼苗 影响 生理指标 |
Effect of Combined Pollution of Aluminium(Al~(3+)) and Cationic Surfactant(CTAB) on Maize Seedlings. |
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| Abstract: | The effects of the co existing of cetyltrimethylammonium bromide(CTAB),a kind of cationic surfactant and Aluminium(Al 3+ ) on maize seedlings were studied.The results showed that CTAB could intensify the toxic effect of Aluminium on maize seedlings.The activities of protective enzymes,such as superoxide dismutase(SOD) and peroxidase(POD),increasing gradually,but activities of catalase(CAT) decreased,the generating rate of superoxide ions increased markedly,and so did membrane lipid peroxidation and plasma membrane permeability of the maize seedlings,however,the content of chlorophyll decreased.When the concentration of CTAB reached 1 0 cmc(critical micelle concentration),the photosynthesis rate and transpiration rate of the seedling dropped drastically. |
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| Keywords: | Al 3+ CTAB maize seedling toxicity |
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