1887

Abstract

A novel Gram-stain-positive, motile, endospore-forming, rod-shaped bacterial strain, NEAU-cbsb5, was isolated from forest soil from Changbai Mountain, Heilongjiang Province, China. The isolate grew at 15–40 °C (optimum 30 °C), at pH 6.0–8.0 (optimum pH 7.0) and in the presence of up to 4 % (w/v) NaCl, although NaCl was not required for growth. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain NEAU-cbsb5 formed a distinct lineage within the genus and was most closely related to DSM 18954 (99.1 % similarity) and JCM 12212 (99.0 %). 16S rRNA gene sequence similarity to sequences of the type strains of other species was less than 96.0 %. Average nucleotide identity (ANI) values between NEAU-cbsb5 and its most closely related species were 78.72–84.75 % by ANIm, ANIb and OrthoANIu analysis. The DNA–DNA hybridization values between strain NEAU-cbsb5 and its close relatives DSM 18954 and JCM 12212 were both 23.80 %, again indicating they belong to different taxa. The major cellular fatty acids of NEAU-cbsb5 were iso-C, anteiso-C and C. The polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and an unknown aminophospholipid. The cell-wall peptidoglycan contained -diaminopimelic acid and the predominant menaquinones were MK-7 and MK-6. The genomic DNA G+C content was 33.0 mol%. Based on the phylogenetic, phenotypic and chemotaxonomic data, strain NEAU-cbsb5 was classified as a representative of a novel species in the genus for which the name sp. nov. is proposed. The type strain is NEAU-cbsb5 (=CGMCC 1.14993=DSM 100485).

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2017-11-01
2021-10-28
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