Sphingomonas pseudosanguinis sp. nov., isolated from the water reservoir of an air humidifier.

A yellow-pigmented bacterial isolate, strain G1-2(T), obtained from the surface of an air humidifier, was characterized taxonomically. 16S rRNA gene sequence analysis, physiological characterization and estimation of the ubiquinone and polar lipid patterns and fatty acid composition revealed that strain G1-2(T) was similar to Sphingomonas yabuuchiae and Sphingomonas sanguinis, but also showed pronounced differences. On the basis of these results, a novel species of the genus Sphingomonas is described, for which the name Sphingomonas pseudosanguinis sp. nov. is proposed. The type strain is G1-2(T) (=CCUG 54232(T)=CIP 109431(T)).