Bacterial diversity in deep-sea sediments under influence of asphalt seep at the São Paulo Plateau.

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2020
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Abstract
Here we investigated the diversity of bacterial communities from deep-sea surface sediments under influence of asphalt seeps at the Sao Paulo Plateau using next-generation sequencing method. Sampling was performed at North São Paulo Plateau using the human occupied vehicle Shinkai 6500 and her support vessel Yokosuka. The microbial diversity was studied at two surficial sediment layers (0-1 and 1-4 cm) of five samples collected in cores in water depths ranging from 2456 to 2728 m. Bacterial communities were studied through sequencing of 16S rRNA gene on the Ion Torrent platform and clustered in operational taxonomic units. We observed high diversity of bacterial sediment communities as previously described by other studies. When we considered community composition, the most abundant classes were Alphaproteobacteria (27.7%), Acidimicrobiia (20%), Gammaproteobacteria (11.3%) and Deltaproteobacteria (6.6%). Most abundant OTUs at family level were from two uncultured bacteria from Actinomarinales (5.95%) and Kiloniellaceae (3.17%). The unexpected high abundance of Alphaproteobacteria and Acidimicrobiia in our deep-sea microbial communities may be related to the presence of asphalt seep at North São Paulo Plateau, since these bacterial classes contain bacteria that possess the capability of metabolizing hydrocarbon compounds.
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queiroz2020bacterialantonie Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Queiroz, Luciano Lopes;Bendia, Amanda Gonçalves;Duarte, Rubens Tadeu Delgado;das Graças, Diego Assis;da Costa da Silva, Artur Luiz;Nakayama, Cristina Rossi;Sumida, Paulo Yukio;Lima, Andre O S;Nagano, Yuriko;Fujikura, Katsunori;Kitazato, Hiroshi;Pellizari, Vivian Helena;
Journal antonie van leeuwenhoek
Year 2020
DOI
10.1007/s10482-020-01384-8
URL
Keywords
diversity microorganisms asphalt seep deep-sea sediment são paulo plateau

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