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https://locus.ufv.br//handle/123456789/19397
Tipo: | Artigo |
Título: | Aliphatic hydrocarbon enhances phenanthrene degradation by autochthonous prokaryotic communities from a pristine seawater |
Autor(es): | Rodrigues, Edmo Montes Morais, Daniel Kumazawa Pylro, Victor Satler Redmile-Gordon, Marc Oliveira, uraci Alves de Roesch, Luiz Fernando Wurdig Cesar, Dionéia Evangelista Tótola, Marcos Rogério |
Abstract: | The microbial diversity and functioning around oceanic islands is poorly described, despite its importance for ecosystem homeostasis. Here, we aimed to verify the occurrence of microbe-driven phenanthrene co-oxidation in the seawater surrounding the Trindade Island (Brazil). We also used Next-Generation Sequencing to evaluate the effects of aliphatic and polycyclic aromatic hydrocarbons (PAHs) on these microbial community assemblies. Microcosms containing seawater from the island enriched with either labelled (9^-14C) or non-labelled phenanthrene together with hexadecane, weathered oil, fluoranthene or pyrene, and combinations of these compounds were incubated. Biodegradation of phenanthrene-9^-14C was negatively affected in the presence of weathered oil and PAHs but increased in the presence of hexadecane. PAH contamination caused shifts in the seawater microbial community—from a highly diverse one dominated by Alphaproteobacteria to less diverse communities dominated by Gammaproteobacteria. Furthermore, the combination of PAHs exerted a compounded negative influence on the microbial community, reducing its diversity and thus functional capacity of the ecosystem. These results advance our understanding of bacterial community dynamics in response to contrasting qualities of hydrocarbon contamination. This understanding is fundamental in the application and monitoring of bioremediation strategies if accidents involving oil spillages occur near Trindade Island and similar ecosystems. |
Palavras-chave: | Hydrocarbon biodegradation Pristine environment Hydrocarbonoclastic bacteria Metagenomics Microbial ecology Trindade Island |
Editor: | Microbial Ecology |
Tipo de Acesso: | Springer Science+Business Media |
URI: | http://dx.doi.org/10.1007/s00248-017-1078-8 http://www.locus.ufv.br/handle/123456789/19397 |
Data do documento: | 3-Out-2017 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | texto completo | 1,41 MB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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