摘要
将栉孔扇贝置于不同浓度的Cu2+溶液中10d,测定其鳃组织过氧化氢酶(CAT),谷胱甘肽过氧化物酶(GSH-PX),超氧化物歧化酶(SOD)的活性。结果表明,随着Cu2+浓度的增高,CAT的活性先降后升再降,SOD的活性先降后升再降,GSH-PX的活性先降后升,但整体仍是抑制的特性。另外,对于低浓度Cu2+长期暴露,栉孔扇贝鳃组织中SOD较CAT和GSH-PX敏感,可考虑作为水生生态系统中低浓度Cu2+长期暴露的一种生物检测指标。
The aim of this work was to study the effect of Cu^2＋ on the activities of antioxidant enzyme CAT,SOD and GSH- PX in the Gill of Chlamys farreri. After 10day＇s exposure experiment,the results showed that within the range of Cu^2＋ dosages the activities of CAT and SOD were inhabited in low level of Cu^2＋,inducted and inhabited with the high level of Cu^2＋;the activitie of GSH-PX was inhabited and inducted from low level of Cu^2＋ to high level of Cu^2＋. The activities of CAT, SOD and GSH-PX were highest at o.oomg·L^-1 Cu^2＋. These results also suggest that SOD was more sensitive than CAT and GSH-PX to low dose Cu^2＋ exposure,and they could be served as bio-monitoring index of lowconcentration Cu^2＋ exposure in aquatic ecosystem.
出处
《湖北农业科学》
北大核心
2007年第1期117-119,共3页
Hubei Agricultural Sciences
基金
国家自然科学基金资助项目(30271029)
