华北农学报 ›› 2007, Vol. 22 ›› Issue (3): 65-67. doi: 10.3321/j.issn:1000-7091.2007.03.015

所属专题: 白菜

• 论文 • 上一篇    下一篇

镉对小白菜根细胞质膜氧化还原系统的影响

孙光闻1, 朱祝军2, 陈日远1, 刘厚诚1   

  1. 1. 华南农业大学园艺学院, 广东 广州 510642;
    2. 浙江大学农业与生物技术学院园艺系, 浙江 杭州 310029
  • 收稿日期:2007-03-08 出版日期:2007-06-28
  • 作者简介:孙光闻(1968-),女,吉林公主岭人,副教授,博士,主要从事蔬菜逆境生理研究工作。
  • 基金资助:
    广东省产学研重点项目(cgxhzd200406);广州市农业局招标项目(200406)

Effect of Cadmium on the Redox System of Root Plasma Membrane in Pakchoi

SUN Guang-wen1, ZHU Zhu-jun2, CHEN Ri-yuan1, LIU Hou-cheng1   

  1. 1. College of Horticulture, South China Agricultural University, Guangzhou 510642, China;
    2. Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
  • Received:2007-03-08 Published:2007-06-28

摘要: 小白菜根细胞质膜上存在氧化还原系统。1 mg/L Cd使2个小白菜品种的根细胞质膜NADH氧化速率显著升高,对Fe(CN)63-和EDTA-Fe3+还原速率无明显影响;10 mg/L Cd使2个小白菜品种根细胞质膜的NADH氧化速率、Fe(CN)63-和EDTA-Fe3+还原速率显著降低,说明高浓度Cd抑制了小白菜根细胞质膜的氧化还原系统活性。Cd处理后,2品种小白菜根细胞质膜NADPH氧化速率表现不同趋势。

关键词: 镉, 小白菜, 根系质膜, 氧化还原系统

Abstract: The redox system existed in root plasma membrane of pakchoi. 1 mg/L Cd significantly increased the oxidation rate of NADH, and had no effects on the reduction rates of Fe(CN)63- and EDTA-Fe3+ of plasma membrane in roots of two pakchoi cultivars. 10 mg/L decreased the oxidation rate of NADH, the reduction rates of Fe(CN)63- and EDTA-Fe3+ of plasma membrane in roots of two pakchoi cultivars. The oxidation rate of NADPH had different tendency between two cultivars in presence of Cd.

Key words: Cadmium, Pakchoi, Root plasma membrane, Redox system

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引用本文

孙光闻, 朱祝军, 陈日远, 刘厚诚. 镉对小白菜根细胞质膜氧化还原系统的影响[J]. 华北农学报, 2007, 22(3): 65-67. doi: 10.3321/j.issn:1000-7091.2007.03.015.

SUN Guang-wen, ZHU Zhu-jun, CHEN Ri-yuan, LIU Hou-cheng. Effect of Cadmium on the Redox System of Root Plasma Membrane in Pakchoi[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(3): 65-67. doi: 10.3321/j.issn:1000-7091.2007.03.015.

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