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| Reysenbach, Anna-louise; Gotz, Dorothée; Banta, Amy; Jeanthon, Christian; Fouquet, Yves. |
| Introduction : Recently, the use of culture-independent molecular phylogenetic techniques has greatly increased our inventory of archaeal and bacterial diversity at deep-sea vents (e.g. Harmsen et al., 1997; Reysenbach et al., 2000; Takai et al., 2001) and several of the lineages appear to be endemic to deep-sea vents (Reysenbach et al., 2000b; Takai et al, 2000; Longnecker & Reysenbach, 2001). Using environmental data, some of these lineages have now been cultivated (L'Haridon et al., 1998; Campbell et al., 2001). For example, until recently, the chemolithoautotrophic and thermophilic bacterial lineage, the Aquificales, was restricted to shallow marine vents and terrestrial thermal springs. However, as part of two independent studies, one in... |
| Tipo: Text |
Palavras-chave: Phylogeny; Aquificales; Hydrothermal vent; Deep sea. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-894.pdf |
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| 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 |
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| Jeanthon, Christian; L' Haridon, Ste! Phane; Cueff, Valerie; Banta, Amy; Reysenbach, Anna-louise; Prieur, Daniel. |
| A thermophillic, non-spore-forming, marine, sulfate-reducing bacterium, strain SL6(T), was isolated from deep-sea hydrothermal sulfides collected at Guaymas Basin. The Gram-negative-staining cells occurred singly or in pairs as small, highly motile rods. The temperature range for growth was 50-80degreesC with an optimum at 75degreesC. The pH range for growth at 70degreesC was 6.3-6.8, with an optimum at 6.5. The NaCl concentration range for growth was 5.55 g l(-1), with an optimum at 30 g l(-1). H-2 and CO2 were the only substrates for growth and sulfate reduction. However, growth was stimulated by several organic compounds. Sulfur, thiosulfate, sulfite, cystine, nitrate and fumarate were not used as electron acceptors. Pyruvate, lactate and malate did not... |
| Tipo: Text |
Palavras-chave: Sulfate reduction; Thermodesulfobacterium; Bacteria; Thermophile; Deep sea hydrothermal vent. |
| Ano: 2002 |
URL: https://archimer.ifremer.fr/doc/2002/publication-585.pdf |
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