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林业科学 ›› 2010, Vol. 46 ›› Issue (2): 152-156.doi: 10.11707/j.1001-7488.20100225

• 论文 • 上一篇    下一篇

土壤pH值对脂松苗木膜脂过氧化及内源保护系统的影响

刘爽 王庆成 刘亚丽 田宇明 孙晶 徐静   

  1. 东北林业大学林学院 哈尔滨 150040
  • 收稿日期:2009-03-09 修回日期:1900-01-01 出版日期:2010-02-25 发布日期:2010-02-25
  • 通讯作者: 王庆成

Effects of Soil pH Variations on Lipid Peroxidation and Inherent Protection System of Red Pine Seedlings

Liu Shuang,Wang Qingcheng,Liu Yali,Tian Yuming,Sun Jing,Xu Jing   

  1. School of Forestry, Northeast Forestry University Harbin 150040
  • Received:2009-03-09 Revised:1900-01-01 Online:2010-02-25 Published:2010-02-25

关键词: 脂松, 土壤pH值, 质膜透性, 膜脂过氧化, 渗透调节, 适应性

Abstract:

Red Pine seedlings were grown in the potted soils with different acidity (pH=4.5, 5.5, 6.5, 7.5, 8.0) to investigate their physiological responses to soil pH, and futher to evaluate the soil pH feasibility. Dramatic physiological responses of Red Pine seedlings were detected under various soil pH treatments. Under soil pH 5.5, the seedling foliages grew best, with the lowest malondialdehyde content, ion leakage and soluble substance content, and the highest carotinoid content and antioxidant enzyme activities; With soil pH 7.5 and 8.0 treatments, the seedling needles developed poorest, with greater membrane lipid peroxidation and lower antioxidant enzyme activities, and the greater cell membrane injury and soluble substance content. Results suggested that Red Pine seedlings was mostly adapt to soil with pH of 5.5, followed by soils with pH of 4.5 and 6.5, and could hardly adapted to soil with pH of 7.5 and higher.

Key words: Red Pine (Pinus resinosa), soil pH, plasma-membrane permeability, membrane lipid peroxidation, osmoregulation, adaptation