CdⅡ离子对石龙尾生理生化特性的影响  

Effects of CdⅡ on The Physioligical and Biochemical Characters of Limnophila Sessiliflor

作　　者：赵春[1] 陈佩林[1] 施国新[2] 

机构地区：[1]南通师范学院生命科学与技术系,江苏南通226007 [2]南京师范大学生命科学院,江苏南京210097

出　　处：《淮阴师范学院学报（自然科学版）》2003年第3期241-244,共4页Journal of Huaiyin Teachers College;Natural Science Edition

基　　金：国家自然科学基金资助项目(39770046);江苏省自然科学基金资助项目(BK7107)

摘　　要：研究了Cd 离子对水生植物石龙尾生理生化特性的影响,包括可溶性蛋白含量和活性氧清除系统的活性(SOD、POD、CAT).实验结果显示,受重金属Cd 离子的影响,在低浓度Cd 离子溶液处理下,石龙尾的可溶性蛋白含量微量上升,O-2的含量、SOD的活性和比活性及CAT的活性皆有应激性升高,但随着Cd 离子处理浓度的升高,超过它们的耐受阈值又呈下降趋势,POD的活性则呈持续上升趋势.This paper deals with Cd?on physioligical and biolThis paper deals with the effects of Cd? on the physilogical and biological characteristics of Limnophila sessiliflora including soluble protein content and activity of scarenging systems of activated oxygen(SOD,CAT,POD).The results show that affected by heavy metal Cd?, the soluble protein content,CAT activity,SOD activity and SOD ratio activity of Limnophila sessiliflora increases when the solution density is low and decreases when the solution density rises above their tolerance limit,whereas the activity of POD increases continuously.

关 键 词：石龙尾 可溶性蛋白 活性氧清除系统 Cd(Ⅱ) SOD POD CAT 

分 类 号：O949.777.8[理学]