Sphingobacterium composti sp nov., isolated from cotton-waste composts

A Gram-negative, strictly aerobic, short rod-shaped, non-motile bacterial strain designated 4M24(T) was isolated from cotton-waste compost. Analysis of the 16S rRNA gene sequence of strain 4M24(T) revealed that it is a member of the genus Sphingobacterium, sharing 88.5-94.5% sequence similarity with type strains of the genus Sphingobacterium and being most closely related to Sphingobacterium daejeonense TR6-04(T) (94.5% sequence similarity) and Sphingobacterium mizutaii ATCC 33299(T) (92.2% similarity). The major fatty acids of strain 4M24(T) grown on trypticase soy agar medium were summed feature 3 (iso-C-15:0 2-OH and/or C-16:1 omega 7c; 37.5%), iso-C-15:0 (29.5%) and iso-C-17:0 3-OH (19.7%). The G + C content of the genomic DNA was 42.3 mol%. On the basis of phenotypic and genotypic characteristics, strain 4M24(T) represents a novel species of the genus Sphingobacterium, for which the name Sphingobacterium composti sp. nov. is proposed. The type strain is 4M24(T) (=KACC 11313(T) =DSM 18850(T)).