Consulta: subjectFacets:"Deep-sea hydrothermal vent"
Registros recuperados: 3
Data/hora: 16/06/2024 10:45:48

Marinitoga lauensis sp. nov., a novel deep-sea hydrothermal vent thermophilic anaerobic heterotroph with a prophage
Provedor de dados: 5
Autores: L’haridon, Stéphane; Gouhier, Léna; John, Emily St.; Reysenbach, Anna-louise.
A novel moderately thermophilic, heterotrophic anaerobe, designated strain LG1T, was isolated from the Mariner deep-sea hydrothermal vent field along the Eastern Lau Spreading Center and Valu Fa Ridge. Cells of strain LG1T were motile rods, occurring singly or in pairs, 0.6 μm in width and 1.2 μm in length. The strain LG1T grew between 40 and 70 °C (optimum 50–55 °C), at a pH between 5 and 8 (optimum pH 6.5) and with 7.5 to 50 g L−1 NaCl (optimum 30 g L−1). Sulfur, cystine and thiosulfate were reduced to sulfide, and cell yield was improved in the presence of cystine. Strain LG1T was an organotroph able to use a variety of organic compounds. Phylogenetic analysis based on 16S rRNA gene sequence comparisons indicated that strain LG1T was affiliated to the...
Tipo: Text
Palavras-chave: Marinitoga; Petrotogaceae; Petrotogales; Thermotogota; Deep-sea hydrothermal vent; Lau Basin.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00485/59651/62683.pdf

Specific enrichment of hyperthermophilic electroactive Archaea from deep-sea hydrothermal vent on electrically conductive support.
Provedor de dados: 5
Autores: 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

An abyssal mobilome: Viruses, plasmids and vesicles from deep-sea hydrothermal vents
Provedor de dados: 5
Autores: 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