Influence of pollution history on the response of coastal bacterial and nanoeukaryote communities to crude oil and biostimulation assays
| Autor: | Alexandra Gogou, Jean-François Ghiglione, Ioannis Hatzianestis, Urania Christaki, Caroline Sauret, Paraskevi Moutsaki |
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| Přispěvatelé: | Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG), Centre National de la Recherche Scientifique (CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut national des sciences de l'Univers (INSU - CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Nord]) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Pollution
Time Factors media_common.quotation_subject Heterotroph Aquatic Science Bacterial growth Oceanography Biostimulation 03 medical and health sciences Nutrient Bioremediation RNA Ribosomal 16S RNA Ribosomal 18S 14. Life underwater Ecosystem Phylogeny [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography 030304 developmental biology media_common 0303 health sciences Bacteria biology 030306 microbiology Ecology Chemistry Water Pollution Eukaryota General Medicine Crude oil biology.organism_classification Hydrocarbons Petroleum Food 13. Climate action Emulsifying Agents Environmental chemistry Water Pollutants Chemical |
| Zdroj: | Marine Environmental Research Marine Environmental Research, Elsevier science, 2012, 79, pp.70-78 Marine Environmental Research, 2012, 79, pp.70-78 |
| ISSN: | 0141-1136 1879-0291 |
| Popis: | International audience; Pollution history has often been proposed to explain site-dependent bioremediation efficiencies, but this hypothesis has been poorly explored. Here, bacteria and their heterotrophic nanoflagellates (HNF) predators originating from pristine and chronically oil-polluted coastal sites were subjected to crude oil ± nutrients or emulsifier amendments. The addition of crude oil had a more visible effect on bacteria originating from the pristine site with a higher increase in the activity of given OTU and inactivation of other petroleum-sensitive bacteria, as revealed by DNA and RNA-based comparison. Such changes resulted in a delay in microbial growth and in a lower bacterial degradation of the more complex hydrocarbons. Biostimulation provoked a selection of different bacterial community assemblages and stirred metabolically active bacteria. This resulted in a clear increase of the peak of bacteria and their HNF predators and higher oil degradation, irrespective of the pollution history of the site. |
| Databáze: | OpenAIRE |
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