华北农学报 ›› 2008, Vol. 23 ›› Issue (1): 109-113. doi: 10.7668/hbnxb.2008.01.024

所属专题: 黄瓜 盐碱胁迫

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硅对盐胁迫下黄瓜叶片膜脂过氧化和活性氧清除系统的影响

姚秋菊1, 张晓伟1, 赵小忠2, 魏国强3   

  1. 1. 河南省农业科学院 园艺研究所, 河南 郑州 450002;
    2. 郑州市农产品质检流通中心, 河南 郑州 450006;
    3. 浙江大学 园艺系, 浙江 杭州 310029
  • 收稿日期:2007-07-20 出版日期:2008-02-28
  • 作者简介:姚秋菊(1973-),女,河南浚县人,助理研究员,硕士,主要从事蔬菜生理及新品种选育工作。
  • 基金资助:
    国家自然科学基金重点项目(30230250)

Effects of Silicon on Lipid Peroxidation and Active Oxygen Scavenging System in Leaves of Cucumber Seedlings under Salt Stress

YAO Qiu-ju1, ZHANG Xiao-wei1, ZHAO Xiao-zhong2, WEI Guo-qiang3   

  1. 1. Institute of Horticulture, Henan Academy of Agriculture Sciences, Zhengzhou 450002, China;
    2. Henan Farm Products Quality Testing and Distribution Center, Zhengzhou 450006, China;
    3. Department of Horticulture, Zhejiang University, Hangzhou 310029, China
  • Received:2007-07-20 Published:2008-02-28

摘要: 研究了水培条件下硅对盐胁迫时黄瓜幼苗膜脂过氧化和活性氧清除系统的影响。结果表明,加硅使盐胁迫下黄瓜幼苗叶片保护酶(SOD,AsA-POD,G-POD)的活性显著升高,抗坏血酸(AsA)和谷胱甘肽(GSH)的含量明显增加,黄瓜叶片的丙二醛(MDA)的含量显著下降。加硅可显著提高盐胁迫条件下黄瓜叶片相对含水量,降低叶片电解质渗漏率。因此,加硅可减轻盐胁迫对黄瓜幼苗的伤害,硅参与了植物的代谢或生理活动。

关键词: 黄瓜, 硅, 盐胁迫, 膜脂过氧化, 活性氧清除系统

Abstract: Two cucumber(Cucumis sativus L.)cultivars were grown in a hydroponics culture system to study the ef -fects of slcon(S)on the lpd peroxdaon and active oxygen scavenging systems n seedling leaves under salt stress. Theresults showed that, under salt stress, addng Scould sgnfcantly increased the actvtiesof superoxde dismutase(SOD),ascorbate peroxidase(AsA -POD)and guaacol peroxidase(G -POD)and the content of ascorbc acid(AsA)and glutathionereduced form(GSH)in cucumber leaves, while markedly decreased the malondialdehyde(MDA)content. Compared withthe plants treated with salt alone, addton of Ssgnfcantly increased the relative water content(RWC)and decreased theelectrolytic leakage percentage in plants leaves for both cultivars, so that alleviated the damage of cucumber seedlingscaused by salt stress. The results of the present study suggested that Ss nvolved in the metabolc or physologicalchanges n higher plants.

Key words: Cucumber, Slicon, Salt stress, Lpd peroxdaon, Active oxygen scavenging syste

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引用本文

姚秋菊, 张晓伟, 赵小忠, 魏国强. 硅对盐胁迫下黄瓜叶片膜脂过氧化和活性氧清除系统的影响[J]. 华北农学报, 2008, 23(1): 109-113. doi: 10.7668/hbnxb.2008.01.024.

YAO Qiu-ju, ZHANG Xiao-wei, ZHAO Xiao-zhong, WEI Guo-qiang. Effects of Silicon on Lipid Peroxidation and Active Oxygen Scavenging System in Leaves of Cucumber Seedlings under Salt Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(1): 109-113. doi: 10.7668/hbnxb.2008.01.024.

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