Diaphorobacter polyhydroxybutyrativorans Qiu et al. 2015 is a later heterotypic synonym of Diaphorobacter nitroreducens Khan and Hiraishi 2003

Abstract

Comparative analyses of Diaphorobacter polyhydroxybutyrativorans SL-205^T and Diaphorobacter nitroreducens NA10B^T were conducted for clarifying their taxonomic relationship. The sequences of the 16S rRNA gene and nine housekeeping genes of SL-205^T and NA10B^T shared high similarities, above 98.8 %. Whole-genomic comparison between the two strains revealed a digital DNA-DNA hybridization estimate of 85.1 % and an average nucleotide identity of 98.3 % that were well above respective recognized thresholds for bacterial species delineation, strongly indicating that they represent the same genomospecies. The metabolic, physiological and chemotaxonomic features of SL-205^T were also shown to be congruent with those of NA10B^T. Therefore, we conclude that Diaphorobacter polyhydroxybutyrativoransQiu et al. 2015 is a later heterotypic synonym of Diaphorobacter nitroreducens Khan and Hiraishi 2003.

Keywords: Diaphorobacter nitroreducens; Diaphorobacter polyhydroxybutyrativorans; genomic analysis; reclassification.