Effects of Cu Contamination on GSH-Px （Glutathione Peroxidase） Activity of Earthworms （ Eisenia fetida ） in Soils

摘要

[Objective] This study aimed to investigate the effects of Cu contamination in soils on GSH-Px( glutathione peroxidase) activity of earthworms( Eisenia fetida). [Method] By artificial soil contamination method,changes in GSH-Px activity of earthworms under different Cu concentrations were investigated [Result] In the early exposure period,low-concentration Cu stress activated GSH-Px activity of earthworms to a certain extent; with the extension of exposure time and increase of Cu concentration,GSH-Px activity of earthworms showed a decreasing trend; however,under high-concentration Cu stress,there was no remarkable regularity in the reduction of GSH-Px activity of earthworms. [Conclusion]This study laid a solid foundation for further revealing the synergistic mechanism of antioxidant enzymes of earthworms.