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Transcriptional profiling of the soil invertebrate Folsomia candida in pentachlorophenol‐contaminated soil
Author(s) -
Qiao Min,
Wang GuangPeng,
Zhang Cai,
Roelofs Dick,
van Straalen Nico M.,
Zhu YongGuan
Publication year - 2015
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.2930
Subject(s) - biology , pentachlorophenol , cytochrome p450 , moulting , gene , endocrine disruptor , springtail , gene expression , biochemistry , enzyme , toxicology , endocrine system , ecotoxicology , botany , hormone , ecology , larva
Pentachlorophenol (PCP), a widely used pesticide, is considered to be an endocrine disruptor. The molecular effects of chemicals with endocrine‐disrupting potential on soil invertebrates are largely unknown. In the present study, the authors explored the transcriptional expression changes of collembola ( Folsomia candida ) in response to PCP contamination. A total of 92 genes were significantly differentially expressed at all exposure times, and the majority of them were found to be downregulated. In addition to the transcripts encoding cytochrome P450s and transferase enzymes, chitin‐binding protein was also identified in the list of common differentially expressed genes. Analyses of gene ontology annotation and enrichment revealed that cell cycle‐related transcripts were significantly induced by PCP, indicating that PCP can stimulate cell proliferation in springtail, as has been reported in human breast cancer cells. Enrichment of functional terms related to steroid receptors was observed, particularly in 20 significant differentially expressed genes involved in chitin metabolism in response to PCP exposure. Combined with confirmation by quantitative polymerase chain reaction, the results indicate that the adverse effects on reproduction of springtails after exposure to PCP can be attributed to a chemical‐induced delay in the molting cycle and that molting‐associated genes may serve as possible biomarkers for assessing toxicological effects. Environ Toxicol Chem 2015;34:1362–1368. © 2015 SETAC