| 镉胁迫对烤烟叶片抗氧化系统的影响 |
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| 引用本文： | 袁祖丽,吴中红,刘秀敏. 镉胁迫对烤烟叶片抗氧化系统的影响[J]. 河南农业科学, 2008, 0(7) |
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| 作者姓名： | 袁祖丽 吴中红 刘秀敏 |
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| 作者单位： | 河南农业大学生命科学学院,河南,郑州,450002;河南农业大学生命科学学院,河南,郑州,450002;河南农业大学生命科学学院,河南,郑州,450002 |
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| 基金项目： | 河南省教育厅自然基金项目 |
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| 摘 要： | 通过水培试验,研究了不同浓度镉胁迫(0mg/L,5mg/L,25mg/L,50mg/L)对烤烟叶片抗氧化系统的影响。结果表明:25mg/L镉胁迫下,过氧化物酶(POD)、超氧化物歧化酶(SOD)的活性最大;5mg/L时,过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)及谷胱甘肽还原酶(GR)活性最大;随着镉浓度增大,烤烟叶片抗氧化酶活性逐渐降低;丙二醛(MDA)含量随镉浓度增大而逐渐增加。
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| 关 键 词： | 烤烟 镉胁迫 活性氧 抗氧化酶 |
Effects of Cadmium Stress on Activity of Antioxidant Enzymes in Flue-cured Tobacco Leaves |
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| YUAN Zu-li,WU Zhong-hong,LIU Xiu-min. Effects of Cadmium Stress on Activity of Antioxidant Enzymes in Flue-cured Tobacco Leaves[J]. Journal of Henan Agricultural Sciences, 2008, 0(7) |
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| Authors: | YUAN Zu-li WU Zhong-hong LIU Xiu-min |
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| Abstract: | The effects of cadmium stress on active oxygen-scavenging system in flue-cured tobacco leaves were studied by hydroponics.The results showed that the activities of peroxidase(POD)and superoxide dismutase(SOD)reach maxima when the concentration of the cadmium was at 25mg/L;The activities of catalase(CAT)and ascorbate peroxidase(APX)and glutathione reductase(GR)reach maxima when the concentration of the cadmium was at 5mg/L;Antioxidant enzymes activity considerably increased at first,then declined;but malondialdehyde(MDA)gradually enhanced with the concentrations of the cadmium increasing. |
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| Keywords: | Cadmium stress Flue-cured tobacco Activated oxygen Anti-oxidative enzymes |
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