| 水分胁迫对甘蔗叶片线粒体膜流动性的影响及其与膜脂过氧化的关系 |
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| 引用本文： | 陈少裕,刘杰. 水分胁迫对甘蔗叶片线粒体膜流动性的影响及其与膜脂过氧化的关系[J]. 植物生理与分子生物学学报, 1991, 0(3) |
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| 作者姓名： | 陈少裕 刘杰 |
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| 作者单位： | 福建农学院甘蔗综合研究所，福建省林业科学研究所 福州 350002，福州 350012 |
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| 摘 要： | 用荧光探剂ANS对抗旱性不同的甘蔗品种在水分胁迫下叶片线粒体膜流动性的变化进行的研究表明,水分胁迫降低了线粒体膜的流动性,抗旱性强的甘蔗品种Co 617和F.Y.79-9的下降幅度分别小于抗旱性弱的Co 740和M.T.77-208;水分胁迫下线粒体膜流动性的下降与膜脂过氧化产物丙二醛含量的增加有密切关系。外源自由基处理试验也表明,甘蔗叶片线粒体膜流动性的下降与膜脂过氧化作用有关。
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| 关 键 词： | 甘蔗 水分胁迫 线粒体 膜流动性 膜脂过氧化 |
The Effect of Water Stress on Membrane Fluidity of Leaf Mitochondria of Sugarcane and Its Relation to Membrane Lipid Peroxidation |
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| CHEN Shao-Yu. The Effect of Water Stress on Membrane Fluidity of Leaf Mitochondria of Sugarcane and Its Relation to Membrane Lipid Peroxidation[J]. Journal Of Plant Physiology and Molecular Biology, 1991, 0(3) |
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| Authors: | CHEN Shao-Yu |
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| Abstract: | Membrane fluidity of leaf mitochondria in drought-sensitive and drought-tolerant sugarcanes varieties was studied by using fluorescence probe ANS. The results showed that membrane fluidity of leaf mitochondria in sugarcane decreased under water stress, the extent of which was larger in drought-sensitive varieties than in drought-resistant varieties. The decrease in fluidity was closely related to the increase of the content of malonaldehyde (MDA), a product of membrane lipid peroxidation. In vitro treatment of leaf mitochondria in sugarcane with exogenous free radicals generated by xanthine-xanthine oxidase system stimulated membrane lipid peroxidation and decreased membrane fluidity of leaf mitochondria. Decrease of membrane fluidity of leaf mitochondria in sugarcane was also closely related to membrane lipid peroxidation. |
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| Keywords: | sugarcane water stress mitochondria membrane fluidity membrane lipid peroxidation |
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