1887

Abstract

Eight Gram-negative, aerobic, pointed and budding bacteria were isolated from various depths of the hypersaline, heliothermal and meromictic Ekho Lake (Vestfold Hills, East Antarctica). The cells contained storage granules and daughter cells could be motile. Bacteriochlorophyll a was sometimes produced but production was repressed by constant dim light. The strains tolerated a wide range of temperature, pH, concentrations of artificial seawater and NaCI, but had an absolute requirement for sodium ions. Glutamate was metabolized with and without an additional source of combined nitrogen. The dominant fatty acid was C; other characteristic fatty acids were C, C 2-OH, C 3-OH, C C and C. The main polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylcholine. The DNA G+C base composition was 62--64 mol%. 16S rRNA gene sequence comparisons showed that the isolates were phylogenetically close to the genera and Morphological, physiological and genotypic differences to these previously described and distinct genera support the description of a new genus and a new species, gen. nov., sp. nov. The type strain is EL-172(= DSM 11457).

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/content/journal/ijsem/10.1099/00207713-49-1-137
1999-01-01
2019-11-13
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http://instance.metastore.ingenta.com/content/journal/ijsem/10.1099/00207713-49-1-137
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