A novel pale pink-coloured, strictly aerobic, Gram-stain negative bacterial strain, designated strain KER25-12T, was isolated from a laboratory air-conditioning system in South Korea. Cells were observed to be non-motile cocci showing positive catalase and oxidase reactions. Strain KER25-12T was found to grow at 10–30 °C (optimum, 25–30 °C), at pH 4.0–9.0 (optimum, pH 6.0–7.0) and in the presence of 0–2% (w/v) NaCl (optimum, 0%). Ubiquinone-10 and spermidine were detected as the sole respiratory quinone and the predominant polyamine, respectively. The major fatty acids were identified as summed feature 8 (comprising C18:1ω7c and/or C18:1ω6c), summed feature 3 (comprising C16:1ω7c and/or C16:1ω6c), C16:0 and C18:0. The genomic DNA G+C content of strain KER25-12T was determined to be 70.0 mol%. The major polar lipids were identified as diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine and an unidentified aminolipid. Phylogenetic analysis based on 16S rRNA gene sequence comparison revealed that strain KER25-12T belongs to the genus Roseomonas and shows high sequence similarity to Roseomonas aerilata 5420S-30T (98.57%), Roseomonas pecuniae N75T (97.44%) and Roseomonas vinacea CPCC 100056T (97.40%). Based on the morphological, physiological, chemotaxonomic and phylogenetic features, strain KER25-12T is concluded to represent a novel species of the genus Roseomonas, for which the name Roseomonas aeriglobus sp. nov. is proposed. The type strain is KER25-12T (= KACC 19282T = JCM 32049T).
Roseomonas aeriglobusPolyphasic taxonomy Novel species Air-conditioning system
Korean Agricultural Culture Collection
Japan Collection of Microorganisms
LMG Culture Collection
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This work was supported by the Program for Collection of Domestic Biological Resources from the National Institute of Biological Resources (NIBR No. 2017-02-001) of Ministry of Environment (MOE) and the National Research Foundation of Korea (2017R1A2B4004888) of MEST, Republic of Korea.
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Conflict of interest
The authors declare that they have no conflict of interest.
This article does not contain any studies with human participants and/or animals performed by any of the authors. The formal consent is not required in this study.
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