Phycicoccus aerophilus sp. nov., isolated from air.

A Gram-positive, short rod-shaped, non-spore-forming bacterium, designated 5516T-20(T), was isolated from an air sample. The results of 16S rRNA gene sequence analyses showed that strain 5516T-20(T) belonged to the family Intrasporangiaceae, having the highest sequence similarities (97.5 and 96.1 %, respectively) with respect to the type strains of Phycicoccus dokdonensis and Phycicoccus jejuensis. The value for DNA-DNA hybridization between 5516T-20(T) and P. dokdonensis DS-8(T) was 41 %. Strain 5516T-20(T) contained menaquinone MK-8(H4) as the major isoprenoid quinone, possessed phosphatidylethanolamine, phosphatidylinositol and diphosphatidylglycerol as the polar lipids and contained glucose and ribose as whole-cell sugars. The major fatty acids were C(17 : 1)omega8c, iso-C(16 : 0), iso-C(15 : 0), C(17 : 0) and iso-C(14 : 0). The G+C content of the DNA from strain 5516T-20(T) was 70.5 mol%. On the basis of the data from the polyphasic taxonomic study, strain 5516T-20(T) represents a novel species within the genus Phycicoccus, for which the name Phycicoccus aerophilus sp. nov. is proposed. The type strain is 5516T-20(T) (=KACC 20658(T) =DSM 18548(T)).