Roseomonas aeriglobus sp. nov., isolated from an air-conditioning system

Abstract

A novel pale pink-coloured, strictly aerobic, Gram-stain negative bacterial strain, designated strain KER25-12, 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 KER25-12 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 C ω7c and/or C ω6c), summed feature 3 (comprising C ω7c and/or C ω6c), C and C. The genomic DNA G+C content of strain KER25-12 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 KER25-12 belongs to the genus Roseomonas and shows high sequence similarity to Roseomonas aerilata 5420S-30 (98.57%), Roseomonas pecuniae N75 (97.44%) and Roseomonas vinacea CPCC 100056 (97.40%). Based on the morphological, physiological, chemotaxonomic and phylogenetic features, strain KER25-12 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 KER25-12 (= KACC 19282 = JCM 32049).

Phylotaxogenomics for the Reappraisal of the Genus Roseomonas With the Creation of Six New Genera

“…Basonym: Roseomonas aeriglobus (Lee and Jeon, 2018) The description of Pararoseomonas aeriglobus is the same as that of Roseomonas aeriglobus as given by Lee and Jeon (2018). The accession number for the 16S rRNA gene sequence is KY864922.…”

Roseomonas bella sp. nov., isolated from lake sediment

“…Members of this genus have a wide distribution in nature, and have primarily been isolated from clinical samples such as blood, wounds and genitourinary specimens [1][2][3][4][5]. They have also been isolated from different environmental samples, like Roseomonas aeriglobus [6], R. deserti [7], R. fluminis [8], R. globiformis [9] and R. radiodurans [10], which were separated from airconditioning systems, crude oil-contaminated desert sand, sediment of a shallow stream, urban area and gamma rayirradiated soil in the last 2 years. Bacteria in the genus Roseomonas have the following characteristics: Gram-stain-negative, aerobic, catalase-and oxidase-positive, and with Q-10 as the main menaquinone.…”

Roseomonas algicola sp. nov., isolated from a green alga, Pediastrum duplex

“…The members of the genus Roseomonas are generally characterized as Gram-stain-negative, strictly aerobic and pink-pigmented. Members of the genus Roseomonas have been isolated from various environmental habitats, including water [2][3][4], cooling tower and water-cooling systems [5,6], air conditioners [7,8], soil [9][10][11], an oilcontaminated site [12], sediment [13][14][15] and clinical specimens [1,16]. Because it has been reported that some microbes living in algal spheres influence algal growth through some interactions, alga-associated bacteria have attracted a great deal of attention in order to understand algal growth [17].…”