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An abyssal mobilome: Viruses, plasmids and vesicles from deep-sea hydrothermal vents ArchiMer
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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Specific enrichment of hyperthermophilic electroactive Archaea from deep-sea hydrothermal vent on electrically conductive support. ArchiMer
Pillot, Guillaume; Frouin, Eleonore; Pasero, Emilie; Godfroy, Anne; Combet-blanc, Yannick; Davidson, Sylvain; Liebgott, Pierre-pol.
While more and more investigations are done to study hyperthermophilic exoelectrogenic communities from environments, none have been performed yet on deep-sea hydrothermal vent. Samples of black smoker chimney from Rainbow site on the Atlantic mid-oceanic ridge have been harvested for enriching exoelectrogens in microbial electrolysis cells under hyperthermophilic (80 °C) condition. Two enrichments were performed in a BioElectrochemical System specially designed: one from direct inoculation of crushed chimney and the other one from inoculation of a pre-cultivation on iron (III) oxide. In both experiments, a current production was observed from 2.4 A/m2 to 5.8 A/m2 with a set anode potential of -0.110 V vs Ag/AgCl. Taxonomic affiliation of the exoelectrogen...
Tipo: Text Palavras-chave: Hyperthermophilic exoelectrogens; Deep-sea hydrothermal vent; Microbial electrolysis cell; External electron transfer.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00431/54228/55551.pdf
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