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Selenium as an anti-oxidant and pro-oxidant in ryegrass
文献类型：期刊论文
| 作者 | Hartikainen, H; Xue, TL; Piironen, V |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2000 |
| 卷号 | 225期号:1-2页码:193-200 |
| 关键词 | Anti-oxidant Gsh-px Pro-oxidant Ryegrass Selenium Sod Tocopherol |
| 文献子类 | Article |
| 英文摘要 | Selenium is an essential element for antioxidation reactions in human and animals. In order to study its biological role in higher plants, ryegrass ( Lolium perenne) was cultivated in a soil without Se or amended with increasing dosages of H2SeO4 (0.1, 1.0, 10.0 and 30.0 mg Se kg(-1)). Ryegrass was harvested twice and the yields were analyzed for antioxidative systems and growth parameters. Selenium exerted dual effects: At low concentrations it acted as an antioxidant, inhibiting lipid peroxidation, whereas at higher concentrations, it was a pro-oxidant, enhancing the accumulation of lipid peroxidation products. The antioxidative effect was associated with an increase in glutathione peroxidase (GSH-Px) activity, but not with superoxide dismutase (SOD) and alpha -tocopherol, which was the only tocopherol detected. In the second yield, the diminished lipid peroxidation due to a proper Se addition coincided with promoted plant growth. The oxidative stress found at the Se addition level greater than or equal to 10 mg kg(-1) resulted in drastic yield losses. This result indicates that the toxicity of Se can be attributed, in addition to metabolic disturbances, to its pro-oxidative effects. Neither the growth-promoting nor the toxic effect of Se could be explained by the changes in the total chlorophyll concentration. |
| WOS关键词 | THIOREDOXIN REDUCTASE-ACTIVITY ; GLUTATHIONE-PEROXIDASE ; CHLAMYDOMONAS-REINHARDTII ; IODOTHYRONINE DEIODINASE ; HIGHER-PLANTS ; SELENOPROTEIN ; CELLS ; PURIFICATION ; TOXICITY ; TISSUE |
| 语种 | 英语 |
| WOS记录号 | WOS:000165788200019 |
| 出版者 | KLUWER ACADEMIC PUBL |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/68287]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Hartikainen, H |
| 作者单位 | 1.Univ Helsinki, Dept Appl Chem & Microbiol, FIN-00014 Helsinki, Finland 2.Chinese Acad Sci, Inst Geog, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hartikainen, H,Xue, TL,Piironen, V. Selenium as an anti-oxidant and pro-oxidant in ryegrass[J]. PLANT AND SOIL,2000,225(1-2):193-200. |
| APA | Hartikainen, H,Xue, TL,&Piironen, V.(2000).Selenium as an anti-oxidant and pro-oxidant in ryegrass.PLANT AND SOIL,225(1-2),193-200. |
| MLA | Hartikainen, H,et al."Selenium as an anti-oxidant and pro-oxidant in ryegrass".PLANT AND SOIL 225.1-2(2000):193-200. |
入库方式： OAI收割
来源：地理科学与资源研究所
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