| 镉和锌对番茄幼苗抗氧化酶活性的影响 |
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| 引用本文： | 丁海东,万延慧,齐乃敏,朱为民,邵耀椿. 镉和锌对番茄幼苗抗氧化酶活性的影响[J]. 仲恺农业技术学院学报, 2004, 17(2): 37-41,46 |
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| 作者姓名： | 丁海东 万延慧 齐乃敏 朱为民 邵耀椿 |
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| 作者单位： | 1. 扬州大学农学院,江苏,扬州,225009
2. 上海市农业科学院园艺研究所,上海,201106;上海市设施园艺技术重点实验室,上海,201106 |
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| 摘 要： | 采用水培试验,就不同浓度的Cd2 、Zn2 对番茄(Lycopersicon esculentum Mill.)幼苗生长和抗氧化酶活性的影响进行了研究.结果表明,随着Cd2 、Zn2 处理浓度的增加,番茄幼苗生长受到抑制,生物量积累下降.根系和叶片发生膜脂过氧化作用,丙二醛(MDA)含量增加.根系和叶片中的抗氧化酶活性升高,超氧化物歧化酶(SOD)和过氧化物酶(POD)活性上升.在低浓度时,酶活性变化相对平缓,高浓度下变化较快.叶片中POD活性变化最快.Cd2 对番茄幼苗的毒害性比Zn2 强.
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| 关 键 词： | 番茄(Lycopersicon esculentum Mill.) 重金属胁迫 丙二醛 抗氧化酶 |
| 文章编号： | 1006-0774(2004)02-0037-05 |
Effects of cadmium and zinc on activities of antioxidant enzymes in tomato seedlings |
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| DING Hai-dong,WAN Yan-hui,QI Nai-min,ZHU Wei-min,SHAO Yao-chun. Effects of cadmium and zinc on activities of antioxidant enzymes in tomato seedlings[J]. Journal of Zhongkai Agrotechnical College, 2004, 17(2): 37-41,46 |
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| Authors: | DING Hai-dong WAN Yan-hui QI Nai-min ZHU Wei-min SHAO Yao-chun |
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| Abstract: | Some solution culture experiments were carried out to investigate the effects of various cadmium and zinc on activities of antioxidant enzymes in tomato seedlings. The result showed that with the increase in concentration of Cd2 and Zn2 , the growth and biomass of tomato seedling were inhibited. Malondialdehyde(MDA) content in roots and leaves produced by membrane lipid peroxidation was enhanced. Activities of antioxidant enzymes including superoxide dismutase(SOD) and peroxidase (POD) were induced to rise. Activities of enzymes changed smoothly treated with low concentration, whereas activities changed sharply with high concentration. The activity of POD in leaves was induced rapidly. The toxicity effects of Cd2 was higher than that of Zn2 in tomato seedlings. |
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| Keywords: | Lycopeniaun esculentum heavy metal stress MDA antioxidant enzyme |
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