1887

Abstract

The genera and are closely related members of the family . The genus consists of the species originally separated from the genus by gene analysis. Due to the high similarity of the 16S rRNA genes between species of both genera, the taxonomic status is here re-evaluated by a genome-based approach. Based on a core genome phylogeny and genome relatedness indices, it is shown that the taxonomy and nomenclature given for the basonym is more appropriate. Therefore, we propose to use this name in preference. Furthermore, the species status of and was reassessed. Both species are related at subspecies level by digital DNA–DNA hybridization (dDDH) analysis. Additionally, average amino acid identity (AAI) and average nucleotide identity (ANI) do not support a separate species status, and therefore it is proposed to classify as a subspecies of . Consequently, both species are being renamed subsp. subsp. nov. and subsp. subsp. nov., respectively. The genome relatedness indices revealed a close relationship of the genomospecies 5 with subsp. . Thus, it has been assigned to the same subspecies.

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2021-01-27
2021-02-26
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