稀土元素对红豆杉细胞膜损伤的影响  

Effects of the Rare Earth Elements on the Membrane Damage of Taxus Cell

作　　者：苏湘鄂[1] 梅兴国[2] 余倚亭[2] 

机构地区：[1]深圳大学生命科学学院,深圳518060 [2]华中理工大学生命科学与技术学院,武汉430074

出　　处：《深圳大学学报（理工版）》2003年第2期66-70,共5页Journal of Shenzhen University(Science and Engineering)

基　　金：国家科技部"九五"重点攻关资助项目(96C02 03 01)

摘　　要：研究在+Ca2+及-Ca2+条件下,稀土元素对红豆杉细胞质膜的影响.结果表明,在缺乏Ca2+条件下,0 1μg/L的稀土元素处理的红豆杉细胞中细胞质膜电解质泄漏率和丙二醛(MDA)含量下降,过氧化物酶和超氧化物歧化酶的活性增加,1μg/L的稀土元素处理效果则相反.在加钙条件下,稀土元素处理组未呈现显著性差异.The effects of the rare earth elements on the membrane damage of Taxus cell with or without Ca2+ in the medium were investigated. The results indicated that the rate of electrolyte leakage and the MDA content in the medium with Ca2+ of 1μg/L were higher than those in the free- Ca2+ medium,while POD and SOD activity of the former was lower than that of the latter. When the cell membrane was treated in the medium of 01 μg/L,the results were contrary to the above. The experiments showed that the rare earth elements of appropriate concentration could maintain the integrity of cell membrane instead of Ca2+.

关 键 词：稀土元素 红豆杉 细胞膜脂 过氧化作用 损伤问题 质膜 超氧化物歧化酶 丙二醛 过氧化物酶 电解质渗透率 

分 类 号：Q949.661[生物学—植物学] Q945.48