Defluviitoga tunisiensis gen. nov., sp. nov., a thermophilic bacterium isolated from a mesothermic and anaerobic whey digester. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Systematic and Evolutionary Microbiology Année : 2012

Defluviitoga tunisiensis gen. nov., sp. nov., a thermophilic bacterium isolated from a mesothermic and anaerobic whey digester.

Résumé

Strain SulfLac1(T), a thermophilic, anaerobic and slightly halophilic, rod-shaped bacterium with a sheath-like outer structure (toga), was isolated from a whey digester in Tunisia. The strain's non-motile cells measured 3-30×1 µm and appeared singly, in pairs or as long chains. The novel strain reduced thiosulfate and elemental sulfur, but not sulfate or sulfite, into sulfide. It grew at 37-65 °C (optimum 55 °C), at pH 6.5-7.9 (optimum pH 6.9) and with 0.2-3 % (w/v) NaCl (optimum 0.5 %). The G+C content of the strain's genomic DNA was 33.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SulfLac1(T) was most closely related to Petrotoga mobilis (91.4 % sequence similarity). Based on phenotypic, phylogenetic and chemotaxonomic evidence, strain SulfLac1(T) represents a novel species of a new genus within the order Thermotogales, for which the name Defluviitoga tunisiensis gen. nov., sp. nov. is proposed. The type strain of the type species is SulfLac1(T) ( = DSM 23805(T) = JCM 17210(T)).

Dates et versions

hal-00739989 , version 1 (09-10-2012)

Identifiants

Citer

Wajdi Ben Hania, Ramzi Ghodbane, Anne Postec, Moktar Hamdi, Bernard Ollivier, et al.. Defluviitoga tunisiensis gen. nov., sp. nov., a thermophilic bacterium isolated from a mesothermic and anaerobic whey digester.. International Journal of Systematic and Evolutionary Microbiology, 2012, 62 (Pt 6), pp.1377-82. ⟨10.1099/ijs.0.033720-0⟩. ⟨hal-00739989⟩
222 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More