Pedobacter roseus sp. nov., isolated from a hypertrophic pond, and emended description of the genus Pedobacter

Abstract

A Gram-negative, pink-coloured, rod-shaped, non-flagellated bacterium, designated CL-GP80T, was isolated from a hypertrophic pond located within the campus of Seoul National University, Korea. Analysis of its 16S rRNA gene sequence revealed that strain CL-GP80T belongs to the family Sphingobacteriaceae and is closely related to Pedobacter heparinus ATCC 13125T (95.8 % sequence similarity) and to other members of the genus Pedobacter (90.8–95.3 % similarity). Temperature and pH ranges for growth were 5–33 °C and pH 6–8, respectively. The DNA G+C content was 41.3 mol%. The major fatty acids were iso-C15 : 0 (37.0 %), iso-C15 : 0 2-OH and/or C16 : 1 ω7c (24.5 %), and iso-C17 : 0 3-OH (11.3 %). Phenotypic, chemotaxonomic and phylogenetic analyses indicated that strain CL-GP80T could be assigned to the genus Pedobacter, but distinguished from recognized species of the genus. Strain CL-GP80T (=KCCM 42272T=JCM 13399T) is therefore proposed as the type strain of a novel species, for which the name Pedobacter roseus sp. nov. is proposed.