| 甜菜碱对NaCl胁迫下小麦细胞保护酶活性的影响 |
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| 引用本文： | 张士功,高吉寅,宋景芝.甜菜碱对NaCl胁迫下小麦细胞保护酶活性的影响[J].植物学报,1999,16(4):429-432. |
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| 作者姓名： | 张士功 高吉寅 宋景芝 |
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| 作者单位： | 1(中国农业科学院农业自然资源和农业区划研究所山区研究室 北京 100081） |
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| 摘 要： | 本文以小麦为材料，研究甜菜碱对NaCl胁迫下小麦幼苗细胞保护酶系统的影响。结果表明，外源甜菜碱能够提高NaCl胁迫下小麦幼苗超氧化物歧化酶、过氧化物酶等细胞保护酶的活性，抑制过氧化作用产物丙二醛的积累，降低叶片质膜透性和盐害对细胞膜的伤害。所有这些变化都有利于提高NaCl胁迫下小麦幼苗细胞膜的稳定性、完整性和对NaCl胁迫的适应性。
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| 关 键 词： | NaCl胁迫 甜菜碱 细胞保护酶 小麦幼苗 |
| 收稿时间： | 1998-06-29 |
| 修稿时间： | 1998-09-10 |
Effects of Betaine on Activities of Membrane Protective Enzymes in Wheat (Triticum aestivum L.) Seedlings Under NaCl Stress |
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| ZHANG Shi-Gong,GAO Ji-Yin and SONG Jing-Zhi.Effects of Betaine on Activities of Membrane Protective Enzymes in Wheat (Triticum aestivum L.) Seedlings Under NaCl Stress[J].Bulletin of Botany,1999,16(4):429-432. |
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| Authors: | ZHANG Shi-Gong GAO Ji-Yin and SONG Jing-Zhi |
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| Institution: | 1(Upland Research Center, Institute of Agricultural Natural Resources and Agricultureal Regional Planning, The Chinese Academy of Agricultural Sciences, Beijing 100081) |
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| Abstract: | The effects of betaine on activities of membrane protective enzymes in wheat seedlings
were studied. The results showed that the exogenous betaine could promote the activities of membrane protective enzymes such as superoxide dismutase (SOD) and peroxidase (POD), decrease the accumulation of malonic dialdehyde (MDA), and decrease the leaf relative conductance and saltstress-induced injuries of plasma membrane under 1.2% NaCl stress. All these changes could raise the cell membrane stability and integrity , and the adaptabilities of wheat seedling to NaCl stress. |
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| Keywords: | , |
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