重金属对油菜·诸葛菜的碳酸酐酶抑制作用  

Inhibition of Heavy Metals on Carbonic Anhydrase in Brassica napus,Orychophragmus violaceus

作　　者：吴沿友[1] 张红萍[2] 吴德勇[2] 李国祥[1] 刘建[1] 

机构地区：[1]江苏大学江苏省现代农业设备与技术重点实验室,江苏镇江212013 [2]江苏大学生物与环境工程学院,江苏镇江212013

出　　处：《安徽农业科学》2006年第24期6430-6431,共2页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(40273038);江苏大学高层次人才启动基金项目

摘　　要：用铜、铅和钴3种重金属处理油菜和诸葛菜叶片,研究了重金属对油菜、诸葛菜的碳酸酐酶的抑制作用。结果表明:3种重金属对植物碳酸酐酶活性都具有一定的阻碍作用,但抑制常数不同,其中铜最小,铅次之,钴最大;且植物碳酸酐酶比动物碳酸酐酶对重金属敏感,这对优化自然界的食物链具有重要意义。Carbonic anhydrase is the ubiquitous enzyme in plants and catalyzes the interconversion of carbon dioxide hydration reaction.There are three kinds of heavy metals： copper, lead and cobalt, which have been used to treat the leaves of Brassica napus and Orychophrasmus violaceus. The results showed that three kinds of heavy metals all could inhibit the activities of carbonic anhydrase, but their inhibition constants were different. The inhibition constants of copper was the most small; lead, the second and cobalt, the greatest. Furthermore the carbonic anhydrase in plants was more sensitive than animals. It is important to grade-up the food chain of nature.

关 键 词：植物 碳酸酐酶 重金属 抑制常数 

分 类 号：Q945.78[生物学—植物学]