%0 Journal Article %A Feng, Guang-Da %A Wang, Dong-Dong %A Yang, Song-Zhen %A Li, Hua-Ping %A Zhu, Hong-Hui %T Genome-based reclassification of Sphingopyxis ummariensis as a later heterotypic synonym of Sphingopyxis terrae, with the descriptions of Sphingopyxis terrae subsp. terrae subsp. nov. and Sphingopyxis terrae subsp. ummariensis subsp. nov. %D 2017 %J International Journal of Systematic and Evolutionary Microbiology, %V 67 %N 12 %P 5279-5283 %@ 1466-5034 %R https://doi.org/10.1099/ijsem.0.002465 %K Sphingopyxis terrae subsp. ummariensis %K digital DNA–DNA hybridization %K 16S rRNA gene sequence %K fatty acid profiles %K whole genome sequence %K average nucleotide identity %I Microbiology Society, %X During the phylogenetic analysis of the genus Sphingopyxis , we found that an incorrect 16S rRNA gene sequence (accession number: D13727) was provided in the original description of Sphingopyxisterrae NBRC 15098T and the wrong sequence has been adopted and used for a long time. It should be replaced by the new correct 16S rRNA gene sequence (accession number: MF618306). The new sequence shared the highest similarity (99.8 %) with that of Sphingopyxisummariensis DSM 24316T. The average nucleotide identity (ANI) (96.87 %) and digital DNA–DNA hybridization (75.30 %) values based on the whole-genome sequences and almost the same phenotypic and chemotaxonomic characteristics of the two type strains revealed that Sphingopyxis ummariensis should be a later heterotypic synonym of Sphingopyxis terrae . However, the distinctions in the genome size, hydrolysis of aesculin, α-glucosidase and particularly the fatty acid profiles strongly support that strain DSM 24316T should be considered to represent a novel subspecies of Sphingopyxis terrae. Two novel subspecies are therefore proposed, namely Sphingopyxisterrae subsp. terrae subsp. nov. (type strain E-1-AT=NBRC 15098T=JCM 10195T=DSM 8831T=LMG 17326T) and Sphingopyxisterrae subsp. ummariensis subsp. nov. (type strain UI2T=DSM 24316T=CCM 7428T=MTCC 8591T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.002465