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应用生态学报 ›› 1993, Vol. 4 ›› Issue (2): 223-225.

• 研究论文 • 上一篇    下一篇

酸雨和SO2作用下SOD酶活性与菠菜叶片损伤相关性的研究

刘燕云, 曹洪法   

  1. 中国环境科学研究院环境生态研究所, 北京 100012
  • 收稿日期:1990-12-11 修回日期:1992-08-24 出版日期:1993-04-25 发布日期:1993-04-25

Leaf injury and superoxide dismutase activity in spinach leaves exposed to SO2 and/or simulated acid rain

Liu Yanyun, Cao Hongfa   

  1. Institute ot Environmental Ecology, Chinese Research Academy of Environmental Sciences, Beijing 100012
  • Received:1990-12-11 Revised:1992-08-24 Online:1993-04-25 Published:1993-04-25

关键词: Ca, 活性氧, Cd胁迫, NO, 植物激素

Abstract: The studies show that under exposure to SO2 and simulated acid rain spinach leaf contains less chlorophyll, its MDAcontent and conductivity are increased, and leaf ageing is accelerated. The SODactivity is decreased with increasing pH, and lossed by 50% at pH3.6 for SO2 and simulated acid rain and at pH2.8 for simulated acid rain. The SODactivity of spinach leaves exposed to simulated acid rain is higher than that to SO2 and simulated acid rain.

Key words: Acid rain, SO2, Superoxide dismutase(SOD), Membrane permeability, NO, Ca, ROS, plant hormone, cadmium stress