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Abstract

A Gram-stain-negative, facultatively aerobic bacterial strain, designated DB1506, of the family Acetobacteraceae , was isolated from an air-conditioning system in the Republic of Korea. Colonies were pink- to rosy-coloured and cells were non-motile cocci with catalase- and oxidase-positive activities. Growth of strain DB1506 was observed at 20–37 °C (optimum, 30 °C), pH 5.5–8.5 (pH 7.0) and in the presence of 0–0.5 % (w/v) NaCl (0 %). Strain DB1506 contained summed feature 8 (comprising C18 : 1 ω7c and/or C18 : 1 ω6c) and C18 : 1 2-OH as major fatty acids and ubiquinone-10 as the sole isoprenoid quinone. Phosphatidylglycerol, phosphatidylethanolamine, unidentified phospholipids, unidentified aminolipids and unidentified polar lipids were detected as major polar lipids. The G+C content of the genomic DNA calculated from the whole genome sequence was 72.5 mol%. Strain DB1506 was most closely related to Paracraurococcus ruber NS89, Dankookia rubra WS-10 and Siccirubricoccus deserti SYSU D8009 with 16S rRNA gene sequence similarities of 96.01, 95.88 and 95.44 %, respectively, but strain DB1506 formed a clearly distinct phylogenic lineage from them within the family Acetobacteraceae . On the basis of phenotypic, chemotaxonomic and molecular properties, strain DB1506 represents a novel species of a new genus within the family Acetobacteraceae , for which the name Roseicella frigidaeris gen. nov., sp. nov. is proposed. The type strain is DB1506 (=KACC 19791=JCM 32945).

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2019-02-28
2019-10-18
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