In:
International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 55, No. 3 ( 2005-05-01), p. 1217-1221
Abstract:
A novel, thermophilic, anaerobic bacterium that is able to tolerate hydrogen was isolated from a deep-sea hydrothermal chimney collected at the Rainbow field on the Mid-Atlantic Ridge. Cells were rod-shaped and surrounded by a sheath-like outer structure (toga); they were weakly motile by means of a polar flagellum. They appeared singly, in pairs or in short chains. They grew at 35–65 °C (optimum 60 °C), pH 4·5–8·5 (optimum pH 6·0) and 10–65 g sea salts l −1 (optimum 30–40 g l −1 ). The isolate was organotrophic, and able to grow on various carbohydrates or complex proteinaceous substrates. Growth was not inhibited under 100 % hydrogen or in the presence of 2 % oxygen in the gas phase. The isolate reduces sulfur, although sulfur reduction is not required for growth. The fermentation products identified on glucose were acetate, ethanol, formate, hydrogen and CO 2 . The G+C content of the genomic DNA was 28±1 mol%. Phylogenetic analysis of the 16S rRNA gene placed the strain within the genus Marinitoga , order Thermotogales , in the bacterial domain. On the basis of the 16S rRNA gene sequence comparisons and physiological characteristics, the isolate is considered to represent a novel species, for which the name Marinitoga hydrogenitolerans sp. nov. is proposed. The type strain is AT1271 T (=DSM 16785 T =JCM 12826 T ).
Type of Medium:
Online Resource
ISSN:
1466-5026
,
1466-5034
DOI:
10.1099/ijs.0.63550-0
Language:
English
Publisher:
Microbiology Society
Publication Date:
2005
detail.hit.zdb_id:
215062-1
detail.hit.zdb_id:
2056611-6
SSG:
12
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