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A pink-coloured bacterial strain, designated 5715S-9T, was isolated from an air sample collected in Suwon, Republic of Korea. The cells were strictly aerobic, Gram-negative, non-spore-forming, non-flagellated and short-rod-shaped. On the basis of 16S rRNA gene sequence analysis, the organism was a member of the genus Rubellimicrobium, showing the highest sequence similarities with Rubellimicrobium mesophilum MSL-20T (96.2 % sequence similarity) and Rubellimicrobium thermophilum DSM 16684T (93.9 %). The major polar lipids were phosphatidylglycerol, phosphatidylcholine, diphosphatidylglycerol, phosphatidylethanolamine and an unidentified glycolipid. The major fatty acids (>10 %) were C18 : 1 ω7c, C16 : 0 and 11-methyl C18 : 1 ω7c. The G+C content of the DNA was 69 mol%. On the basis of both phylogenetic and phenotypic evidence, strain 5715S-9T represents a novel species of the genus Rubellimicrobium, for which the name Rubellimicrobium aerolatum sp. nov. is proposed. The type strain is 5715S-9T (=KACC 12504T=DSM 19297T).
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