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Department of Biology, University of Bergen, PO Box 7800, N-5020 Bergen, Norway
Correspondence
Nils-Kåre Birkeland
nils.birkeland{at}bio.uib.no
A novel anaerobic, moderately thermophilic bacterium, strain Cas60314T, was isolated from hot oil-well production water obtained from an oil reservoir in the North Sea. The cells were Gram-negative, motile, straight rods. The salinity and pH growth optima were 2.03.0 % NaCl and 6.57.0, respectively. The optimum temperature was 58 °C. Strain Cas60314T had a fermentative type of metabolism and utilized proteinous substrates, some single amino acids and a limited number of organic acids, but not sugars, fatty acids or alcohols. Cystine and elemental sulfur were reduced to sulfide. The G+C content of the DNA was 46.6 mol%. On the basis of phenotypic and phylogenetic features, it is proposed that this isolate represents a novel genus and species with the name Thermovirga lienii gen. nov., sp. nov. within the family Syntrophomonadaceae. The proposed type strain is strain Cas60314T (=DSM 17291T=ATTC BAA-1197T).
The morphology and growth temperature profile of Thermovirga lienii gen. nov., sp. nov. are shown in supplementary figures available in IJSEM Online.
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