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RESEARCH PRODUCT
Cumulative Effects of Short-Term Polymetal Contamination on Soil Bacterial Community Structure
L. LignierRémi ChaussodLionel Ranjardsubject
DNA BacterialRibosomal Intergenic Spacer analysischemistry.chemical_elementMetal toxicityBiologyApplied Microbiology and BiotechnologyMicrobiologyMicrobial EcologyMetals HeavyDNA Ribosomal SpacerSoil PollutantsEcosystemSoil Microbiology[SDV.EE]Life Sciences [q-bio]/Ecology environmentCadmiumbiomassEcologyBacteriatoxicityMercuryheavy metalContaminationDNA FingerprintingMercury (element)Microbial population biologychemistryEnvironmental chemistrySoil watermicrobial populationSoil microbiologyCopperFood ScienceBiotechnologyCadmiumdescription
ABSTRACT In this study we evaluated the short-term effects of copper, cadmium, and mercury, added singly or in combination at different doses, on soil bacterial community structure using the bacterial automated ribosomal intergenic spacer analysis (B-ARISA) fingerprinting technique. Principal-component analysis of B-ARISA profiles allowed us to deduce the following order of impact: (Cu + Cd + Hg) >> Hg ≥ Cd > Cu. These results demonstrated that there was a cumulative effect of metal toxicity. Furthermore, the trend of modifications was consistent with the “hump-backed” relationships between biological diversity and disturbance described by Giller et al. (K. E. Giller, E. Witler, and S. P. McGrath, Soil Biol. Biochem. 30: 1389-1414, 1998).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-02-01 |