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Diversity of Magnetotactic Bacteria from a French Pristine Mediterranean Area

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Abstract

Magnetotactic bacteria synthesize intracellular magnetite and/or greigite magnetosome crystals. They play a significant role in both iron and sulfur cycles in sedimentary aquatic environments. To get insight into the bio-geochemical contribution of MTB, more studies concerning their ecology and their distribution in diverse habitats are necessary. The MTB community of an oil-industry polluted area of the French Mediterranean coast has been previously investigated. Here, we investigate the MTB community from coastal sediments of a Mediterranean pristine area using optical and transmission electron microscopy and phylogenetic analysis based on 16S rRNA gene sequences. A particularly high diversity of MTB was observed, with cocci phylogenetically distributed across the order Magnetococcales, including a novel cluster with sequences from the Mediterranean Sea designated as “Med group”, and novel morphotypes.

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Acknowledgments

We thank T. Labouheure for his help in sampling strategy, B. Devouard for discussion on crystals structures, and J.L. Cayol for discussion on the pristine ecological parameters.

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Authors and Affiliations

  1. Aix-Marseille Université, IRD, CNRS/INSU, MIO, UM 110, Case 901, 13288, Marseille, Cedex 09, France

    Maxime Fuduche, Anne Postec, Sylvain Davidson, Agnès Hirschler-Réa, Bernard Ollivier & Nathalie Pradel

  2. Service de Microscopie Electronique, IBDML, 13288, Marseille Cedex 09, France

    Jean-Paul Chauvin

  3. Aix-Marseille Université, CEREGE, Centre St Charles, Case 67, 3 Place Victor Hugo, 13331, Marseille, France

    Grégoire Galès

  4. Aix-Marseille Université, Laboratoire de Chimie Bactérienne, Institut de Microbiologie de la Méditerranée, CNRS UMR7283, 13402, Marseille, Cedex 20, France

    Long-Fei Wu

  5. Laboratoire International Associé de Bio-Minéralisation et Nano-Structures, CNRS, Marseille, France

    Long-Fei Wu & Nathalie Pradel

Authors
  1. Maxime Fuduche
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  2. Anne Postec
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  3. Sylvain Davidson
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  4. Jean-Paul Chauvin
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  5. Grégoire Galès
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  6. Agnès Hirschler-Réa
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  7. Bernard Ollivier
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  8. Long-Fei Wu
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  9. Nathalie Pradel
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Corresponding author

Correspondence to Nathalie Pradel.

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Fuduche, M., Postec, A., Davidson, S. et al. Diversity of Magnetotactic Bacteria from a French Pristine Mediterranean Area. Curr Microbiol 70, 499–505 (2015). https://doi.org/10.1007/s00284-014-0745-y

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  • DOI: https://doi.org/10.1007/s00284-014-0745-y

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