- Diversity of magnetotactic bacteria from a French pristine Mediterranean area. doi link

Auteur(s): Fuduche M., Postec A., Davidson S., Chauvin Jean-Paul, Galès Grégoire, Hirschler A., Ollivier B., Wu Long-Fei, Pradel N.(Corresp.)

(Article) Publié: Current Microbiology, vol. 70 p.499-505 (2015)

Ref HAL: hal-01146287_v1
PMID 25487117
DOI: 10.1007/s00284-014-0745-y
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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.