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Biochemical responses of earthworm Eisenia fetida exposed to cadmium-contaminated soil with long duration

Yang, Xiaoxia, Song, Yufang, Ackland, M. Leigh, Liu, Yang and Cao, Xiufeng 2012, Biochemical responses of earthworm Eisenia fetida exposed to cadmium-contaminated soil with long duration, Bulletin of environmental contamination and toxicology, vol. 89, no. 6, pp. 1148-1153.

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Title Biochemical responses of earthworm Eisenia fetida exposed to cadmium-contaminated soil with long duration
Author(s) Yang, Xiaoxia
Song, Yufang
Ackland, M. Leigh
Liu, Yang
Cao, Xiufeng
Journal name Bulletin of environmental contamination and toxicology
Volume number 89
Issue number 6
Start page 1148
End page 1153
Total pages 6
Publisher Springer New York LLC
Place of publication New York, N. Y.
Publication date 2012-12
ISSN 0007-4861
1432-0800
Keyword(s) antioxidant enzymes
biochemical responses
cadmium
CYP
GST
long exposure
Summary The biochemical responses of the earthworms, Eisenia fetida, exposed to a series of Cd concentrations (0.00, 1.25, 2.50, 5.00 and 10.00 mg Cd2+ kg−1 soil) for up to 8 weeks were investigated, aiming to evaluate the sublethal effects of Cd with long exposure and to explore the potential for applying these responses as biomarkers to indicate the Cd-contaminated soil. The following biochemical parameters were determined: cytochrome P450 (CYP) contents and activities of superoxide dismutase (SOD), catalase (CAT) and glutathione-s-transferase (GST). Cadmium concentrations in all earthworms were apparently accumulated in 4 weeks, and showed minor changes in weeks 6–8 compared to the first 4 weeks. CYP presented a significant elevation in 2–4 weeks and a decline in 6–8 weeks in each treated group. The activities of SOD and CAT showed an obvious increase with exposure of 6–8 weeks while their levels were not affected in 4 weeks in each treated group. GST activity revealed significant activation starting from week 4. This study confirmed the significance of applying a suite of biomarkers rather than a selective choice to assess the impact of pollutants on organisms. It also indicated that the observed effects were more dependent upon exposure duration than dose.
Language eng
Field of Research 100299 Environmental Biotechnology not elsewhere classified
Socio Economic Objective 970105 Expanding Knowledge in the Environmental Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30049645

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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