|
|
|
|
|
Lossouarn, Julien; Nesbo, Camilla L.; Mercier, Coraline; Zhaxybayeva, Olga; Johnson, Milo S.; Charchuck, Rhianna; Farasin, Julien; Bienvenu, Nadege; Baudoux, Anne-claire; Michoud, Gregoire; Jebbar, Mohamed; Geslin, Claire. |
Prokaryotic viruses play a major role in the microbial ecology and evolution. However, the virosphere associated with deep-sea hydrothermal ecosystems remains largely unexplored. Numerous instances of lateral gene transfer have contributed to the complex and incongruent evolutionary history of Thermotogales, an order well represented in deep-sea hydrothermal vents. The presence of clustered regularly interspaced short palindromic repeats (CRISPR) loci has been reported in all Thermotogales genomes, suggesting that these bacteria have been exposed to viral infections that could have mediated gene exchange. In this study, we isolated and characterized the first virus infecting bacteria from the order Thermotogales, Marinitoga piezophila virus 1 (MPV1). The... |
Tipo: Text |
|
Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00254/36483/36732.pdf |
| |
|
|
Haverkamp, Thomas H. A.; Geslin, Claire; Lossouarn, Julien; Podosokorskaya, Olga A.; Kublanov, Ilya; Nesbo, Camilla L.. |
Thermosipho species inhabit thermal environments such as marine hydrothermal vents, petroleum reservoirs, and terrestrial hot springs. A 16S rRNA phylogeny of available Thermosipho spp. sequences suggested habitat specialists adapted to living in hydrothermal vents only, and habitat generalists inhabiting oil reservoirs, hydrothermal vents, and hotsprings. Comparative genomics of 15 Thermosipho genomes separated them into three distinct species with different habitat distributions: The widely distributed T. africanus and the more specialized, T. melanesiensis and T. affectus. Moreover, the species can be differentiated on the basis of genome size (GS), genome content, and immune system composition. For instance, the T. africanus genomes are largest and... |
Tipo: Text |
Palavras-chave: Extremophiles; Hydrothermal vents; Mobile DNA; Speciation; Thermotogae; Vitamine B-12. |
Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00478/58934/61503.pdf |
| |
|
|
|