1887

Abstract

A pink-red pigmented, non-motile, coccoid bacterial strain, ST0316, was isolated from dust samples collected from the stratosphere in Japan. Phylogenetic analysis based on 16S rRNA gene sequences showed that it belonged to the genus . DNA G+C content (69.8 mol%), desiccation tolerance, and resistance to gamma-rays [D (dose required to reduce the bacterial population by 10-fold) >8 kGy] and UV radiation (D 1000 J m) supported the affiliation of strain ST0316 to the genus . The major peptidoglycan amino acids were -glutamic acid, glycine, -alanine, -alanine and ornithine. Predominant fatty acids were C 7, C, C and iso-C. Strain ST0316 diverged from recognized species of the genus , showing less than 93.0 % similarity values to its closest relatives , , and . Strain ST0316 also differed from the type strains of closely related species in its polar lipid profile, nitrate reduction and carbon-source assimilation tests. Therefore, we propose a new species of the genus , sp. nov. (type strain, ST0316 =JCM 11751 =DSM 21230).

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2010-04-01
2019-08-18
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vol. , part 4, pp. 776 - 779

Supplementary data [ PDF] (515 KB), containing:

Gamma-ray resistance of strain ST0316 and ATCC 13939 .

Polar lipid profiles of ATCC 13939 , ST0316 , a mixture of these two strains, and TR0125 .

Characteristics of strain ST0316 and type strains of the closest related species of the genus .

Fatty acid composition (% of total) of strain ST0316 and type strains of the closest related species of the genus .



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