| 镉胁迫下不同生态型五节芒的膜脂过氧化水平及抗氧化能力比较 |
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| 引用本文： | 秦建桥,赵华荣,赵鹏.镉胁迫下不同生态型五节芒的膜脂过氧化水平及抗氧化能力比较[J].安徽农业科学,2011,39(12):7418-7421,7439. |
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| 作者姓名： | 秦建桥 赵华荣 赵鹏 |
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| 作者单位： | 秦建桥(广东省环境科学研究院,广东广州,510045);赵华荣(桂林理工大学环境科学与工程学院,广西桂林,541004);赵鹏(中山大学环境科学与工程学院,广东广州,510275) |
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| 基金项目： | 广东省自然科学基金团队项目，中山大学985工程环境污染控制与修复技术创新平台项目 |
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| 摘 要： | 目的]揭示不同生态型五节芒（Miscanthus floridulus）在抵抗Cd胁迫机制方面的异同。方法]以粤北大宝山矿山开采地优势植物五节芒为试验材料,比较了五节芒非矿山生态型（采自惠州市博罗县丘陵山地）和矿山生态型（采自大宝山矿区）在相同Cd处理浓度下的生理响应。结果]Cd胁迫会导致五节芒叶片MDA的积累,非矿区生态型五节芒MDA积累的幅度要大于矿区种群。非矿区生态型五节芒叶片中SOD活性被Cd胁迫抑制,POD活性都受到Cd胁迫的诱导而比对照有所增加,但矿区生态型增加的幅度要大于非矿区生态型,矿区生态型植株2种酶的活性在最高Cd处理浓度时都显著高于非矿区生态型植株。随Cd处理浓度增大,非矿区种群五节芒叶片中PPO活性呈先增加再下降的趋势,矿区生态型植株在受到Cd胁迫后PPO活性显著增加,在最高Cd浓度处理时矿区生态型植株PPO活性要显著高于非矿区生态型。结论]矿山型五节芒的重金属Cd耐受性要强于非矿山型。
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| 关 键 词： | 镉 五节芒 生态型 抗氧化酶 |
Physiological Metabolism and Protective Enzyme Activity of Different Ecotypes of Miscanthus floridulus Under Cd stress |
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| QIN Jian-qiao et al.Physiological Metabolism and Protective Enzyme Activity of Different Ecotypes of Miscanthus floridulus Under Cd stress[J].Journal of Anhui Agricultural Sciences,2011,39(12):7418-7421,7439. |
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| Authors: | QIN Jian-qiao |
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| Institution: | QIN Jian-qiao et al(Guangdong Provincial Academy of Environmental Science,Guangzhou,Guangdong 510045) |
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| Abstract: | Objective] The aim of the experiment was to reveal the different principle of resistant Cd exposure between two ecotypes of Miscanthus floridulus.Method] By comparing different physiological responses under the same Cd concentration treatment between the non-mining ecotype of Miscanthus floridulus(collected from hills of Huizhou Boluo) and the mining ecotype of Miscanthus floridulus(collected from the Dabaoshan mine).Result] The melondialodehyde(MDA) content of the non-mine ecotype were all significantly... |
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| Keywords: | Cadmium Miscanthus floridulus Ecotype Antioxidan enzymes |
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