1887

Abstract

Strain DSM 17733, isolated from the shore of Lake Abjata in Ethiopia, is a heterotrophic, alkaliphilic, moderately halophilic, Gram-positive, strictly aerobic, non-motile,non-endospore-forming bacterium. The organism grows optimally at 30–37 °C, pH 9 and 3 % (w/v) NaCl. Analysis of the cell wall showed the presence of murein of the type -lys–gly–-Glu, variation A4. The G+C content of the genomic DNA was 69.0 mol%. Sequence analysis of 16S rRNA gene sequence of strain DSM 17733 placed the isolate in the genus . DNA–DNA hybridization of DSM 17733 with those organisms with the closest phylogenetic affiliation, i.e. , and , gave relatedness values of 48.5 %, 63.7 % (repetition, 57.2 %) and 35.7 % (repetition, 29.3 %), respectively. On the basis of both phenotypic and phylogenetic criteria and the low levels of DNA–DNA relatedness with the phylogenetically closest species and , it is proposed that the isolate be classified in a novel species, sp. nov. The type strain is DSM 17733 (=CCUG 48939).

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2006-06-01
2019-12-14
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vol. , part 6, pp. 1229 - 1232

Scanning electron micrographs showing the morphology of sp. nov. DSM 17733 . Bars, 1 µm.



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