Oxidative Damage to Membranes by a Combination of Aluminum and Iron in Suspension-Cultured Tobacco Cells
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概要
- 論文の詳細を見る
Aluminum (AI) and ferrous iron [Fe(II)] are separately non-toxic to cultured tobacco cells in nutrient solution. However, Al and Fe(II) together cause the peroxidation of membrane lipids, the accumulation of Al and Fe, and the loss of viability [Ono et al. (1995) Plant Cell Physiol. 36: 115]. We investigated the cause-and-effect relationships of these various responses. In cells exposed to Fe(ID or Fe(III)-EDTA, both the peroxidation of lipids and the loss of viability were similarly enhanced by AICl_3 in a dose-de-pendent manner. During exposure to AICl_3, the accumulation of Al and the loss of viability became apparent rapidly and simultaneously at 8 h, whereas both the peroxidation of lipids and the accumulation of Fe occurred at later times. However, Iipophilic antioxidants protected cells efficiently not only from the peroxidation of lipids but also from the loss of viability and the accumulation of AI and Fe. These results suggest that the peroxidation of lipids in the plasma membrane that is caused by both AI and Fe leads to the accumulation of Al and Fe and the loss of viability.
- 日本植物生理学会の論文
著者
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Yamamoto Yoko
Research Institute for Bioresources, Okayama University
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山本 幸男
Research Institute For Bioresources Okayama University
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Yamamoto Yoko
Research Institute For Bioresources Okayama University
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MATSUMOTO Hideaki
Research Institute for Bioresources, Okayama University
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Matsumoto Hideaki
Res. Inst. Bioresources Okayama Univ.
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Matsumoto Hideaki
Research Institute For Bioresources Okayama University
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Hachiya Akiko
Research Institute for Bioresources, Okayama University
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Hachiya Akiko
Research Institute For Bioresources Okayama University
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Yamamoto Y
Faculty Of Agriculture Kochi University
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Yamamoto Yoshinori
Kochi Univ. Kochi Jpn
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Matsumoto Hideaki
Res. Inst. For Bioresources Okayama Univ.
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