Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 71, Issue 2, Pages 566-573Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2007.10.025
Keywords
annetocin; translationally controlled tumor protein (TCTP); polycyclic aromatic hydrocarbons (PAHs); earthworm; Eisenia fetida
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Funding
- National Basic Research Program of China [2004CB418503]
- National Natural Science Foundation of China [20577056, 20337010]
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The toxicity of sublethal polycyclic aromatic hydrocarbons (PAHs) levels in soils was assessed by testing their impact on expression of annetocin, a reproduction regulating gene, and translationally controlled tumor protein (TCTP), a tumorigenic response gene, in the earthworm Eisenia fetida cultured in artificial soil spiked with, phenanthrene (Phe), pyrene (Pyr), fluoranthene (Flu), or benzo(a)pyrene (Bap). Annetocin and TCTP were both up-regulated by 0.1 and 1.0 mg kg(-1) benzo(a)pyrene and TCTP was down-regulated by 10.0 mg kg(-1) phenanthrene. Weight loss and cocoon production of the worms were also analyzed. Only 10.0 mg kg(-1) phenanthrene impacted earthworm weight loss significantly and no significant differences on cocoon production were observed. Our study indicated that the potential ecotoxicity of sublethal PAHs in soil should not be neglected and mRNA transcription level in earthworms was a more sensitive indicator of PAHs exposure than traditional indexes using cocoon production as endpoints and/or using the whole-organism as the test materials, (C) 2007 Elsevier Inc. All rights reserved.
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