Skip to Main content Skip to Navigation
Journal articles

Kosmotoga pacifica sp. nov., a thermophilic chemoorganoheterotrophic bacterium isolated from an East Pacific hydrothermal sediment.

Abstract : A novel strictly anaerobic thermophilic heterotrophic bacterium, strain SLHLJ1(T), was isolated from a Pacific hydrothermal sediment. Cells were Gram-negative coccobacilli (approximately 1.0 × 0.6 μm) with a toga. It grew at temperatures between 33 and 78 °C (optimum 70 °C). Elemental sulphur and L-cystine stimulated its growth. It contained C16:0, C16:1 ω11c, C18:0 and C18:1 ω9c as major fatty acids (>5%), 3 phospholipids and 2 glycolipids as polar lipids. Its DNA G+C content was 43.7 mol%. Phylogenetic analyses based on 16S rRNA gene sequences placed strain SLHLJ1(T) within the family Thermotogaceae. The novel isolate was most closely related to Kosmotoga arenicorallina (97.93 % 16S rRNA gene sequence similarity), K. olearia (92.43%) and K. shengliensis (92.17 %). On the basis of phenotypic, chemotaxonomic and phylogenetic comparisons with its closest relatives, we propose its assignment to a novel species of the genus Kosmotoga. The name Kosmotoga pacifica sp. nov. is proposed with strain SLHLJ1(T) (=DSM 26965(T) = JCM 19180(T) = UBOCC 3254(T)) as the type species.
Document type :
Journal articles
Complete list of metadatas

https://hal.univ-brest.fr/hal-00942125
Contributor : Adminhal Univbrestbu <>
Submitted on : Tuesday, February 4, 2014 - 4:58:19 PM
Last modification on : Friday, November 6, 2020 - 2:26:06 PM

Links full text

Identifiers

Collections

Citation

Stéphane l'Haridon, Lijing Jiang, Karine Alain, Morgane Chalopin, Ouafae Rouxel, et al.. Kosmotoga pacifica sp. nov., a thermophilic chemoorganoheterotrophic bacterium isolated from an East Pacific hydrothermal sediment.. Extremophiles, Springer Verlag, 2014, 18 (1), pp.81-8. ⟨10.1007/s00792-013-0596-7⟩. ⟨hal-00942125⟩

Share

Metrics

Record views

310