1887

Abstract

A strictly aerobic bacterium, strain FaiI4, was isolated from free-flowing geothermal waters of a bore (bore register no. 3768) tapping the Great Artesian Basin of Australia. The non-sporulating, Gram-negative cells of strain FaiI4 produced light-pink colonies, were rod-shaped (1×1·5–4 µm) and were motile by a single polar flagellum. Strain FaiI4 grew optimally at 41 °C at a pH of 7·0 and had an absolute requirement for yeast extract. The strain grew on casein hydrolysate, tryptone, gelatin, xylose and acetate in a medium supplemented with 0·06 or 0·006 % yeast extract. Weak acid production was detected from glucose and arabinose. Catalase was produced. Nitrite was produced from nitrate. Strain FaiI4 was sensitive to antibiotics that inhibit growth of bacteria. The G+C content was 63·5±0·5 mol%. Strain FaiI4 was a member of the class ‘’, phylum , placed almost equidistantly between species, and (similarity value of 93 %) as its nearest phylogenetic relatives. Phylogenetic and phenotypic evidence suggest that strain FaiI4 (=ATCC BAA-295 =DSM 14364) should be placed as the type strain of a species in a newly created genus, for which the name gen. nov., sp. nov. is proposed.

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2003-03-01
2019-10-20
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