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| L'Haridon, Stephane; Jiang, Lijing; Alain, Karine; Chalopin, Morgane; Rouxel, Ouafae; Beauverger, Mikael; Xu, Hongxiu; Shao, Zongze; Jebbar, Mohamed. |
| A novel strictly anaerobic thermophilic heterotrophic bacterium, strain SLHLJ1T, 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 SLHLJ1T 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... |
| Tipo: Text |
Palavras-chave: Thermotogales; Kosmotoga; Kosmotoga pacifica; Hydrothermal sediment. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00171/28204/26509.pdf |
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| Jiang, Lijing; L'Haridon, Stephane; Jebbar, Mohamed; Xu, Hongxiu; Alain, Karine; Shao, Zongze. |
| Kosmotoga pacifica strain SLHLJ1T is a thermophilic chemoorganoheterotrophic bacterium isolated from a deep-sea hydrothermal sediment. It belongs to the physiologically homogeneous Thermotogaceae family. Here, we describe the phenotypic features of K. pacifica together with its genome sequence and annotation. The chromosome has 2,169,170 bp, organized in one contig. A total of 1897 candidate protein-encoding genes and 177 RNA genes were identified. The 16S rRNA gene sequence of this strain is distantly related to sequences of some relatives classified in the same genus (K. olearia 7.02% and K. shengliensis 7.83%), with dissimilarity percentages close to the threshold generally described for genus delineation. Nevertheless, the percentage of conserved... |
| Tipo: Text |
Palavras-chave: Marine; Hydrothermal vent; Thermotogales; Chemoorganoheterotroph; Thermophile. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00371/48191/48324.pdf |
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| Jiang, Lijing; Liu, Xuewen; Dong, Chunming; Huang, Zhaobin; Cambon-bonavita, Marie-anne; Alain, Karine; Gu, Li; Wang, Shasha; Shao, Zongze. |
| The deep-sea hydrothermal vent shrimp Rimicaris exoculata largely depends on a dense epibiotic chemoautotrophic bacterial community within its enlarged cephalothoracic chamber. However, our understanding of shrimp-bacterium interactions is limited. In this report, we focused on the deltaproteobacterial epibiont of R. exoculata from the relatively unexplored South Mid-Atlantic Ridge. A nearly complete genome of a Deltaproteobacteria epibiont was binned from the assembled metagenome. Whole-genome phylogenetic analysis reveals that it is affiliated with the genus Desulfobulbus, representing a potential novel species for which the name "Candidatus Desulfobulbus rimicarensis" is proposed. Genomic and transcriptomic analyses reveal that this bacterium utilizes... |
| Tipo: Text |
Palavras-chave: Deltaproteobacteria; Rimicaris exoculata; Wood-Ljungdahl pathway; Epibiont; Sulfur disproportionation. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00624/73600/76007.pdf |
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