Bacterial community composition characterization of a lead-contaminated Microcoleus sp. consortium
| Autor: | Ludovic Giloteaux, A. Solé, Isabel Esteve, Robert Duran |
|---|---|
| Přispěvatelé: | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Health
Toxicology and Mutagenesis Microbial metabolism Biology Cyanobacteria 03 medical and health sciences Microscopy Electron Transmission RNA Ribosomal 16S Botany Environmental Chemistry Ecotoxicology [CHIM]Chemical Sciences Microbial mat Soil Microbiology 030304 developmental biology Gene Library 0303 health sciences Bacteria 030306 microbiology General Medicine Contamination Hydrogen-Ion Concentration 16S ribosomal RNA Pollution Community composition Lead Microcoleus sp Environmental chemistry Microscopy Electron Scanning Water Microbiology Soil microbiology |
| Zdroj: | Environmental Science and Pollution Research Environmental Science and Pollution Research, Springer Verlag, 2011, 18 (7), pp.1147-1159. ⟨10.1007/s11356-010-0432-x⟩ |
| ISSN: | 0944-1344 1614-7499 |
| DOI: | 10.1007/s11356-010-0432-x⟩ |
| Popis: | International audience; Introduction: A Microcoleus sp. consortium, obtained from the Ebro delta microbial mat, was maintained under different conditions including uncontaminated, lead-contaminated, and acidic conditions. Materials and methods: Terminal restriction fragment length polymorphism and 16S rRNA gene library analyses were performed in order to determine the effect of lead and culture conditions on the Microcoleus sp. consortium. Results: The bacterial composition inside the consortium revealed low diversity and the presence of specific terminal-restriction fragments under lead conditions. 16S rRNA gene library analyses showed that members of the consortium were affiliated to the Alpha, Beta, and Gammaproteobacteria and Cyanobacteria. Sequences closely related to Achromobacter spp., Alcaligenes faecalis, and Thiobacillus species were exclusively found under lead conditions while sequences related to Geitlerinema sp., a cyanobacterium belonging to the Oscillatoriales, were not found in presence of lead. Discussion: This result showed a strong lead selection of the bacterial members present in the Microcoleus sp. consortium. Several of the 16S rRNA sequences were affiliated to nitrogen-fixing microorganisms including members of the Rhizobiaceae and the Sphingomonadaceae. Additionally, confocal laser scanning microscopy and scanning and transmission electron microscopy showed that under lead-contaminated condition Microcoleus sp. cells were grouped and the number of electrodense intracytoplasmic inclusions was increased |
| Databáze: | OpenAIRE |
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