Taxogenomics of the Genus : and as Synonyms and Description of sp. nov.

The genus belongs to the phylum and includes eight species. Our study, based on the genomic parameters in silico DNA-DNA hybridization (GGDC), average nucleotide identity (OrthoANI), and average amino acid identity (AAI), confirmed that all current species of belong to this genus and constitute a coherent phylogenomic group, but with species forming two separate branches. In addition, the genome-based analyses revealed that and are members of the same species. Besides, we carried out a taxonomic characterization of the new strain GBPx2, isolated from the halophytic plant sp. Analysis of its 16S rRNA gene sequence showed the highest sequence similarity (97.5%) to HY9. Percentages of GGDC and OrthoANI between strain GBPx2 and species of the genus were lower than the threshold value for species delineation. The DNA G+C content was 43.0 mol%. The polar lipids included phosphatidylethanolamine as well as one unidentified phospholipid and four unidentified lipids, and its major cellular fatty acids were iso-C and summed feature 3 (C and/or iso-C 2-OH). The only quinone present was menaquinone 7. Based on a combination of phenotypic, chemotaxonomic, and phylogenomic features, the GBPx2 strain represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain of is GBPx2 (= IBRC-M 10634 = LMG 28551).