Hydrocarbon pollutants shape bacterial community assembly of harbor sediments

MARINE POLLUTION BULLETIN

卷:104

Article

Barbato, Marta¹  Mapelli, Francesca¹  Magagnini, Mirko²  Chouaia, Bessem^1,4  Armeni, Monica²  Marasco, Ramona³  Crotti, Elena¹  Daffonchio, Daniele^1,3  Bonin, Sara¹ 

[1] Univ Milan, Dept Food Environm & Nutr Sci DeFENS, Milan, Italy

[2] EcoTechSystems Ltd, Ancona, Italy

[3] King Abdullah Univ Sci & Technol KAUST, Biol & Environm Sci & Engn Div BESE, Thuwal 239556900, Saudi Arabia

[4] Cornell Univ, Dept Entomol, 5142 Comstock Hall, Ithaca, NY 14853 USA

关键词: Oil contamination;    Autochthonous bioaugmentation;    Pyrosequencing;    Bacterial community;    Alcanivorax;   

DOI  :  10.1016/j.marpolbul.2016.01.029

来源: Elsevier

【 摘 要 】

Petroleum pollution results in co-contamination by different classes of molecules, entailing the occurrence of marine sediments difficult to remediate, as in the case of the Ancona harbor (Mediterranean Sea, Italy). Autochthonous bioaugmentation (ABA), by exploiting the indigenous microbes of the environment to be treated, could represent a successful bioremediation strategy. In this perspective we aimed to i) identify the main drivers of the bacterial communities' richness in the sediments, ii) establish enrichment cultures with different hydrocarbon pollutants evaluating their effects on the bacterial communities' composition, and iii) obtain a collection of hydrocarbon degrading bacteria potentially exploitable in ABA. The correlation between the selection of different specialized bacterial populations and the type of pollutants was demonstrated by culture-independent analyses, and by establishing a collection of bacteria with different hydrocarbon degradation traits. Our observations indicate that pollution dictates the diversity of sediment bacterial communities and shapes the ABA potential in harbor sediments. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

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