Ferriphaselus amnicola strain GF-20, a new iron- and thiosulfate-oxidizing bacterium isolated from a hard rock aquifer - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue FEMS Microbiology Ecology Année : 2024

Ferriphaselus amnicola strain GF-20, a new iron- and thiosulfate-oxidizing bacterium isolated from a hard rock aquifer

Résumé

Ferriphaselus amnicola GF-20 is the first Fe-oxidizing bacterium isolated from the continental subsurface. It was isolated from groundwater circulating at 20 m depth in the fractured-rock catchment observatory of Guidel-Ploemeur (France). Strain GF-20 is a neutrophilic, iron- and thiosulfate-oxidizer and grows autotrophically. The strain shows a preference for low oxygen concentrations, which suggests an adaptation to the limiting oxygen conditions of the subsurface. It produces extracellular stalks and dreads when grown with Fe(II) but does not secrete any structure when grown with thiosulfate. Phylogenetic analyses and genome comparisons revealed that strain GF-20 is affiliated with the species F. amnicola and is strikingly similar to F. amnicola strain OYT1, which was isolated from a groundwater seep in Japan. Based on the phenotypic and phylogenetic characteristics, we propose that GF-20 represents a new strain within the species F. amnicola.
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Dates et versions

hal-04563350 , version 1 (10-04-2024)
hal-04563350 , version 2 (29-04-2024)

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Melissa Garry, Julien Farasin, L Drevillon, A Quaiser, Camille Bouchez, et al.. Ferriphaselus amnicola strain GF-20, a new iron- and thiosulfate-oxidizing bacterium isolated from a hard rock aquifer. FEMS Microbiology Ecology, 2024, 100 (5), pp.fiae047. ⟨10.1093/femsec/fiae047⟩. ⟨hal-04563350v2⟩
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