| Cd胁迫对油菜和小白菜苗POD、PPO和SOD活性的影响 |
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| 引用本文： | 段云青,王艳. Cd胁迫对油菜和小白菜苗POD、PPO和SOD活性的影响[J]. 山西农业大学学报(自然科学版), 2005, 25(1): 54-57 |
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| 作者姓名： | 段云青 王艳 |
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| 作者单位： | 1. 山西农业大学,文理学院,山西,太谷,030801
2. 山西农业大学,资环学院,山西,太谷,030801 |
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| 基金项目： | 山西农业大学科技创新基金 (200212) |
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| 摘 要： | 通过盆栽土培的方式研究了不同浓度Cd处理时耐性不同的两个基因型油菜和小白菜叶的POD、PPO及SOD的活性变化。结果表明: 油菜和小白菜SOD和POD活性在一定范围内均随胁迫强度的增加而升高; PPO活性随Cd处理浓度的增大呈明显的上升趋势。三种酶呈现不同程度的积极性保护作用, 且变化与其耐性一致。这说明POD、PPO、SOD活性的提高与维持是植物耐Cd胁迫的物质基础之一。
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| 关 键 词： | 油菜 小白菜 过氧化物酶 多酚氧化酶 超氧化物岐化酶 Cd胁迫 |
| 文章编号： | 1671-8151(2005)01-0054-04 |
| 修稿时间： | 2004-04-15 |
Effects of Cadmium instress on the Activity of Peroxidase,Polyphenoloxidase and Superoxidedismutase in Oilseed Rape and Pakchoi Seedlings |
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| DUAN Yun-qing et al.. Effects of Cadmium instress on the Activity of Peroxidase,Polyphenoloxidase and Superoxidedismutase in Oilseed Rape and Pakchoi Seedlings[J]. Journal of Shanxi Agricultural University(Nature Science Edition), 2005, 25(1): 54-57 |
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| Authors: | DUAN Yun-qing et al. |
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| Abstract: | The activity change of POD, PPO and SOD of two genotypesoilseed rape and pakchoiwith different tolerance to Cd toxicity was studied under different Cd concentrations with pot cultivation experiment. The results indicated that the activity of SOD and POD rose with the intension of stress increasing in some range. The activity of PPO submitted obviously rasing trend with external Cd levels. Three enzymes showed various extent positive protect function, whose activity change wasaccordance to the tolerancetoCd. This indicated the keeping and raising of the activity of POD,PPO and SOD was one of the foundation of the tolerance to Cd stress. |
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| Keywords: | Oilseed rape Pakchoi Peroxidase Polyphenoloxidase Superoxide-dismutase Cadmium instress |
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