摘要
用PEG 6 0 0 0 (聚乙二醇 6 0 0 0 )进行渗透胁迫模拟干旱处理 ,研究了Ca2 + 对渗透胁迫下白花苜蓿叶片活性氧伤害及膜脂过氧化作用的影响 .结果表明 :Ca2 + 能增强渗透胁迫下白花苜蓿叶片的保水能力 ,提高叶片中Pro的含量 ,缓解叶绿素的降解速度 ;渗透胁迫下 ,Ca2 + 能保持白花苜蓿叶片细胞膜透性的稳定 ,减少O-·2 和MDA的积累 ;维持较强的SOD活性和较高的AsA含量 ,提高渗透胁迫下白花苜蓿叶片清除活性氧的能力 .
Effects of Ca 2+ on active oxygen damage and membrane lipid peroxidation of Trifolium leaves under osmotic stress were investigated. The results show that Ca 2+ could enchance the ability of holding water, increase the content of Pro and retard decomposing chlorophyll of Trifolium leaves; Ca 2+ could also maintain the stability of plasmalemma permeability, decrease the accumulation of O -· 2 and MDA, as well as keep high activity of SOD and high content of AsA, so that the ability eliminating active oxygen of Trifolium leaves is increased.
出处
《徐州师范大学学报（自然科学版）》
CAS
2002年第3期58-60,63,共4页
Journal of Xuzhou Normal University(Natural Science Edition)
基金
徐州师范大学科研基金项目 (0 1BXL0 10 )
