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  • Title: Roseicella frigidaeris gen. nov., sp. nov., isolated from an air-conditioning system.
    Author: Khan SA, Jeong SE, Jung HS, Quan ZX, Jeon CO.
    Journal: Int J Syst Evol Microbiol; 2019 May; 69(5):1384-1389. PubMed ID: 30816841.
    Abstract:
    A Gram-stain-negative, facultatively aerobic bacterial strain, designated DB1506T, 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 DB1506T 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 DB1506T contained summed feature 8 (comprising C18 : 1ω7c and/or C18 : 1ω6c) 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 DB1506T was most closely related to Paracraurococcus ruber NS89T, Dankookia rubra WS-10T and Siccirubricoccus deserti SYSU D8009T with 16S rRNA gene sequence similarities of 96.01, 95.88 and 95.44 %, respectively, but strain DB1506T formed a clearly distinct phylogenic lineage from them within the family Acetobacteraceae. On the basis of phenotypic, chemotaxonomic and molecular properties, strain DB1506T 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 DB1506T (=KACC 19791T=JCM 32945T).
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