Planomicrobium glaciei sp. nov., a psychrotolerant bacterium isolated from a glacier.

A novel aerobic, psychrotolerant, yellow-to-orange bacterium (strain 0423(T)) was isolated from the China No. 1 glacier. Strain 0423(T) displayed phenotypic and chemotaxonomic features of the genus Planomicrobium, containing anteiso-C(15 : 0) and iso-C(14 : 0) as the major fatty acids. The temperature range for growth was 4-28 degrees C, with optimum growth at 20-21 degrees C. The genomic DNA G+C content was 49 mol%. Phylogenetic analysis based on 16S rRNA gene sequence similarity showed that strain 0423(T) was related to members of the genus Planomicrobium, sharing the highest sequence similarities with the type strains of Planomicrobium chinense, P. mcmeekinii, P. okeanokoites and P. koreense. On the basis of phenotypic characteristics, phylogenetic analysis and DNA-DNA relatedness data, a novel species, Planomicrobium glaciei sp. nov., is proposed. The type strain is 0423(T) (=CGMCC 1.6846(T) =JCM 15088(T)).