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| Lossouarn, Julien; Dupont, Samuel; Gorlas, Aurore; Mercier, Coraline; Bienvenu, Nadege; Marguet, Evelyne; Forterre, Patrick; Geslin, Claire. |
| Mobile genetic elements (MGEs) such as viruses, plasmids, vesicles, gene transfer agents (GTAs), transposons and transpovirions, which collectively represent the mobilome, interact with cellular organisms from all three domains of life, including those thriving in the most extreme environments. While efforts have been made to better understand deep-sea vent microbial ecology, our knowledge of the mobilome associated with prokaryotes inhabiting deep-sea hydrothermal vents remains limited. Here we focus on the abyssal mobilome by reviewing accumulating data on viruses, plasmids and vesicles associated with thermophilic and hyperthermophilic Bacteria and Archaea present in deep-sea hydrothermal vents. |
| Tipo: Text |
Palavras-chave: Deep-sea hydrothermal vent; Bacteria; Archaea; (Hyper-)thermophiles; Mobilome. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00260/37145/36731.pdf |
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| Barbier, Ewa; Lagorce, Arnaud; Hachemi, Amine; Dutertre, Murielle; Gorlas, Aurore; Morand, Lucie; Saint-pierre, Christine; Ravanat, Jean-luc; Douki, Thierry; Armengaud, Jean; Gasparutto, Didier; Confalonieri, Fabrice; Breton, Jean. |
| The hyperthermophilic archaeon Thermococcus gammatolerans can resist huge doses of γ-irradiation – up to 5.0 kGy – without loss of viability. The potential to withstand such harsh conditions is probably due to complementary passive and active mechanisms, including repair of damaged chromosomes. In this work, we documented the formation and repair of oxidative DNA lesions in T. gammatolerans. The basal level of the oxidized nucleoside, 8-oxo-2′-deoxyguanosine (8-oxo-dGuo), was established at 9.2 (+/- 0.9) 8-oxo-dGuo per 106 nucleosides, a higher level than those usually measured in eukaryotic cells or bacteria. A significant increase in oxidative damage, i.e. up to 24.2 (+/- 8.0) 8-oxo-dGuo/106 nucleosides, was measured for T .gammatolerans exposed to a 5.0... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00353/46388/46015.pdf |
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