1887

Abstract

A novel strain designated SR18 was isolated from the rhizosphere soil of a ginseng in Korea. Cells were Gram-staining-negative, motile by gliding, catalase-positive and oxidase-negative, non-spore-forming rods. The isolate grew aerobically at 15–45 °C (optimum 28 °C), pH 5.5–7.5 (optimum pH 7.0) and with 0–3.0 % (w/v) NaCl (optimum 1.5 % NaCl). Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain SR18 belongs to the genus Chitinophaga with sequence similarity of 97.2 % and 97.0 % to 758 and CS5-B1, respectively. Similarity to other species of the genus was 92.8–95.5 %. The predominant menaquinone was MK-7. Major fatty acids were iso-C and Cω5. The polar lipids included phosphatidylethanolamine, unidentified phospholipids, unknown aminolipids and unknown lipids. The genomic DNA G+C content was 45.3 mol%. DNA–DNA relatedness between strain SR18 and NBRC 16041 was 29–32 %. On the basis of polyphasic analysis from this study, strain SR18 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is SR18 ( = KACC 17604 = NBRC 109832).

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2014-08-01
2020-01-27
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