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Effect of Anti-oxidation Marttor to Protective Function on Cell Membrane of Seabuckthorn Leaf under PEG Osmotic Stress
Authors
李丽霞
梁宗锁
韩蕊莲
魏宇昆
Publication date
1 January 2001
Publisher
Abstract
以沙棘叶片为材料 ,研究了外源抗氧化物质 Vc、VE、β-胡萝卜素等对 PEG渗透胁迫下细胞膜的保护作用。结果表明 :加入外源 Vc、β-胡萝卜素能有效保护膜系统 ,使膜透性和丙二醛在胁迫条件下增加小于对照 ,尤其在胁迫前期作用明显 ,而对叶绿素的保护作用在后期表现更突出 ,使叶绿素含量维持在较高水平 ;外源 VE 对防止膜透性增加作用不大 ,对减低丙二醛含量与保护叶绿素方面有所贡献。同时也证明沙棘叶片内 Vc在渗透胁迫下含量下降 ,而 Pro含量显著升高。证明这些物质是构成沙棘抗旱性的重要基础
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018