Functional recovery of biofilm bacterial communities after copper exposure.
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Authors
Boivin, Marie-Elène YMassieux, Boris
Breure, Anton M
Greve, Gerdit D
Rutgers, Michiel
Admiraal, Wim
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ArticleLanguage
en
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Functional recovery of biofilm bacterial communities after copper exposure.Publiekssamenvatting
Potential of bacterial communities in biofilms to recover after copper exposure was investigated. Biofilms grown outdoor in shallow water on glass dishes were exposed in the laboratory to 0.6, 2.1, 6.8 micromol/l copper amended surface water and a reference and subsequently to un-amended surface water. Transitions of bacterial communities were characterised with denaturing gradient gel electrophoresis (DGGE) and community-level physiological profiles (CLPP). Exposure to 6.8 micromol/l copper provoked distinct changes in DGGE profiles of bacterial consortia, which did not reverse upon copper depuration. Exposure to 2.1 and 6.8 micromol/l copper was found to induce marked changes in CLPP of bacterial communities that proved to be reversible during copper depuration. Furthermore, copper exposure induced the development of copper-tolerance, which was partially lost during depuration. It is concluded that bacterial communities exposed to copper contaminated water for a period of 26 days are capable to restore their metabolic attributes after introduction of unpolluted water in aquaria for 28 days.PMID
16271425ae974a485f413a2113503eed53cd6c53
10.1016/j.envpol.2005.07.014
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