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	Provedor de dados ArchiMer (3) Autor Crassous, Philippe (1) Khripounoff, Alexis (1) Lafon, V (1) Loussouarn, Julien (1) Postec, Anne (1) Segonzac, Michel (1) Vangriesheim, Annick (1) Waren, A (1) Mais... Palavra-chave Deep sea hydrothermal vents (3) Sources hydrothermales océaniques profondes (2) Archaea (1) Bacteria (1) Bioréacteur gas lift (1) Bivalve larvae (1) Bivalve reproduction (1) Clonage (1) Cloning (1) Cultures d'enrichissement (1) Currents (1) DGGE (1) Diversity (1) Diversité (1) Enrichment cultures (1) Gas lift bioreactor (1) Hybridation (1) Hybridization (1) Isolement et caractérisation de souche (1) Molecular piracy (1) Mais... Tipo do documento Text (3) Ano 2014 (1) 2008 (1) 2005 (1) País France (3) Idioma Francês (2) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Découverte et caractérisation des premiers virus de Thermotogales (bactéries thermophiles et anaérobies) issus de sources hydrothermales océaniques profondes ArchiMer Loussouarn, Julien. Our knowledge of the viral diversity associated to procaryotic microorganisms inhabiting the deep sea hydrothermal vents is still limited. Only few studies have focused on viral abundance and impact on microbial mortality within these ecosystems. A limited number of viruses from these environments were isolated and characterized. Two viruses, PAV1 and TPV1, associated to hyperthermophilic anaerobic Archaea, Thermococcales order, have ever been described in our laboratory. The topic of this phD thesis was to extend our investigation to other deep sea vent microorganisms in order to deepen our knowledge on the marine hydrothermal virosphere. We decided to focus more precisely on the bacterial order of Thermotogales. This order is composed of anaerobic... Tipo: Text Palavras-chave: Sources hydrothermales océaniques profondes; Siphovirus; Plasmides; Piratage moléculaire; Plasmids; Molecular piracy; Deep sea hydrothermal vents; Thermotogales; Siphoviruses. Ano: 2014 URL: https://archimer.ifremer.fr/doc/00609/72137/70889.pdf Diversite de populations microbiennes thermophiles d'une cheminée hydrothermale océanique profonde : cultures d'enrichissement en bioréacteur et isolement d'espèces nouvelles ArchiMer Postec, Anne. To explore the microbial diversity at deep sea vents, molecular techniques based on the analysis of the gene coding the 16S ribosomal RNA permitted to highlight a large archaeal and bacterial diversity. Nevertheless, the diversity of the hydrothermal microorganisms cultivated to date remains much lower than the diversity described with molecular tools. Innovative methods should therefore be used in order to cultivate new microorganisms, and also determine their metabolic properties and their potential role in the ecosystem. That was the purpose of this study: a bioreactor gas-lift was used to perform enrichment cultures in continuous, during 50 days, in thermophilic (60°C) and hyperthermophilic (90°C) conditions. A hydrothermal chimney sample (Rainbow... Tipo: Text Palavras-chave: Strain isolation and characterization; Hybridization; Sequencing; Cloning; DGGE; Gas lift bioreactor; Enrichment cultures; Deep sea hydrothermal vents; Bacteria; Archaea; Diversity; Isolement et caractérisation de souche; Hybridation; Séquençage; Clonage; DGGE; Bioréacteur gas lift; Cultures d'enrichissement; Sources hydrothermales océaniques profondes; Bacteria; Archaea; Diversité. Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/these-367.pdf Temporal variation of currents, particulate flux and organism supply at two deep-sea hydrothermal fields of the Azores Triple Junction ArchiMer Khripounoff, Alexis; Vangriesheim, Annick; Crassous, Philippe; Segonzac, Michel; Lafon, V; Waren, A. In order to provide information on the production and the distribution of hydrothermal particulate and biological material produced by deep-sea hydrothermal vents, three moorings with sediment traps and currentmeters were deployed for one year in the Azores Triple Junction region. Two moorings were positioned close to two hydrothermal vent fields at the Mid-Atlantic Ridge (Rainbow, 36 degrees 14'N, 33 degrees 54'W, 2250 in depth and Lucky Strike 37 degrees 17'N, 32 degrees 17'W, 1600 in depth). A third was moored out of the influence of the Rainbow vents representing the reference of the pelagic flux in this area. At the Rainbow field, particulate flux (range 341-634 g m(-2)d(-1)) showed a high temporal variation controlled essentially by the current... Tipo: Text Palavras-chave: Bivalve reproduction; Bivalve larvae; Particle composition; Particle flux; Currents; Deep sea hydrothermal vents. Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4059.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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