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- Nickel Toxicity of Rice Seedlings: The Inductive Responses of Antioxidant Enzymes by NiSO₄ in Rice Roots
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題 名 | Nickel Toxicity of Rice Seedlings: The Inductive Responses of Antioxidant Enzymes by NiSO₄ in Rice Roots=水稻幼苗鎳之毒害:硫酸鎳誘導水稻根抗氧化酵素之反應 |
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作 者 | 林玉菁; 高景輝; | 書刊名 | 作物、環境與生物資訊 |
卷 期 | 2:3 民94.09 |
頁 次 | 頁239-244 |
分類號 | 434.111 |
關鍵詞 | 脂質過氧化作用; 硫酸鎳; 水稻; 氧化逆境; Lipid peroxidation; NiSO₄; Oryza sativa L.; Oxidative stress; |
語 文 | 英文(English) |
中文摘要 | 摘要 本研究探討硫酸鎳對水稻幼苗根脂質過 氧化作用、抗氧化酵素活性與過氧化氫含量之 影響。硫酸鎳處理會增加脂質過氧化作用、過 氧化氫含量與superoxide dismutase 及 ascorbate peroxidase 活性。然而硫酸鎳不能 影響catalase 及glutathione reductase 活性。 NADPH oxidase 之抑制劑diphenyleneiodonium chloride 不會抑制硫酸鎳所引起 之過氧化氫產生,顯示NADPH oxidase 不是 硫酸鎳所引起過氧化氫產生之來源。硫酸鎳會 促進diamine oxidase 活性增加,顯示硫酸鎳 所誘導過氧化氫含量增加可能是經由diamine oxidase 作用所造成。 |
英文摘要 | ABSTRACT The effect of NiSO4 on lipid peroxidtion, antioxidant enzyme activities and H2O2 content in roots of rice seedlings was investigested. NiSO4 treatment resulted in increases in H2O2, malondialdehyde contents and superoxide dismutase and ascorbate peroxidase activities. However, NiSO4 had no effect on catalase and glutathione reductase activities. Diphenyleneiodonium chloride, an inhibitor of NADPH oxidase, did not inhibit NiSO4-induced H2O2 production, suggesting NADPH oxidase is not a source of NiSO4-induced H2O2 production. NiSO4 treatment enhanced diamine oxidase activity in rice roots. Results suggest that NiSO4-induced H2O2 production is possibly mediated through diamine oxidase. |
本系統中英文摘要資訊取自各篇刊載內容。