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| Pb、Cd复合胁迫下4种植物抗氧化防御差异性研究 | |
| 引用本文： | 高 扬,毛 亮,周 培,张春华,施婉君,曹杰君,靳治国,时唯伟.Pb、Cd复合胁迫下4种植物抗氧化防御差异性研究[J].中国生态农业学报,2010,18(4):836-842. |
| 作者姓名： | 高 扬 毛 亮 周 培 张春华 施婉君 曹杰君 靳治国 时唯伟 |
| 作者单位： | 1. 上海交通大学环境科学与工程学院,上海,200240;农业部都市农业,南方,重点实验室,上海,200240 2. 农业部都市农业,南方,重点实验室,上海,200240;西南大学资源与环境学院,重庆,400716 3. 农业部都市农业,南方,重点实验室,上海,200240;上海交通大学农业与生物学院,上海,200240 4. 农业部都市农业,南方,重点实验室,上海,200240;农业部都市农业,南方,重点实验室,上海,200240 5. 农业部都市农业,南方,重点实验室,上海,200240 |
| 基金项目： | 国家高技术研究发展计划(863计划)项目(2007AA10Z441)、上海市自然基金项目(07DZ12055, 07JC14025, 08d21900404) |
| 摘 要： | 为了解植物在Pb、Cd复合胁迫下抗氧化系统的响应, 研究了重金属超富集植物龙葵、印度芥菜和非重金属超富集植物玉米和萝卜在Pb、Cd复合胁迫下抗氧化系统的变化。研究结果显示: Pb、Cd复合胁迫下超富集植物印度芥菜和龙葵的叶生物量显著减少, 根和茎生物量在低浓度处理下减少不明显; 非超富集植物萝卜和玉米的生物量随重金属浓度升高显著降低。超富集植物的SOD活性随重金属浓度升高逐渐升高; 4种植物POD活性随重金属浓度变化规律各不相同, 非超富集植物玉米和萝卜POD活性总体上随重金属浓度增加而提高; 超富集植物叶片MDA含量随重金属浓度升高逐渐升高; 印度芥菜和萝卜的总GSH含量显著高于其他两种植物。超富集植物的SOD、MDA、TAST、总GSH和PC与土壤重金属毒性系数呈显著相关; 非超富集植物玉米的POD和总GSH与重金属毒性系数呈显著相关, 而萝卜的TAST和PC与重金属毒性系数呈显著相关性。不同植物的解毒机制并不相同, 因而进一步了解超富集植物的相关酶基因调控对阐明解毒机制尤为重要。 |
| 关 键 词： | 超富集植物 非超富集植物 酶 抗氧化系统 重金属毒性系数 解毒机制 |
Antioxidative defense system differences among four plants under combined Pb and Cd stress |
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| GAO Yang,MAO Liang,ZHOU Pei,ZHANG Chun-Hu,SHI Wan-Jun,CAO Jie-Jun,JIN Zhi-Guo and SHI Wei-Wei.Antioxidative defense system differences among four plants under combined Pb and Cd stress[J].Chinese Journal of Eco-Agriculture,2010,18(4):836-842. | |
| Authors: | GAO Yang MAO Liang ZHOU Pei ZHANG Chun-Hu SHI Wan-Jun CAO Jie-Jun JIN Zhi-Guo and SHI Wei-Wei |
| Institution: | 1. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Key Laboratory of Southern Urban Agriculture, Ministry of Agriculture, Shanghai 200240, China;1. Key Laboratory of Southern Urban Agriculture, Ministry of Agriculture, Shanghai 200240, China; 2. College of Resources and Environment, Southwest University, Chongqing 400716, China;1. Key Laboratory of Southern Urban Agriculture, Ministry of Agriculture, Shanghai 200240, China; 2. School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China;1. Key Laboratory of Southern Urban Agriculture, Ministry of Agriculture, Shanghai 200240, China; 2. School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200241, China;1. Key Laboratory of Southern Urban Agriculture, Ministry of Agriculture, Shanghai 200240, China; 2. School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200242, China;1. Key Laboratory of Southern Urban Agriculture, Ministry of Agriculture, Shanghai 200240, China; 2. College of Resources and Environment, Southwest University, Chongqing 400716, China;1. Key Laboratory of Southern Urban Agriculture, Ministry of Agriculture, Shanghai 200240, China; 2. College of Resources and Environment, Southwest University, Chongqing 400716, China;Key Laboratory of Southern Urban Agriculture, Ministry of Agriculture, Shanghai 200240, China |
| Abstract: | |
| Keywords: | Hyperaccumulator Non-hyperaccumulator Enzyme Antioxidative system Heavy metal toxicity coefficient Detoxification mechanism |
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