Reclassification of the genus <i>Dysgonomonas</i> and description of <i>Dysgonomonas reticulitermitis</i> sp. nov. and <i>Viscerimonas tarda</i> gen. nov., sp. nov. from the gut of the subterranean termite <i>Reticulitermes speratus</i>.

ABSTRACT: The genus Dysgonomonas, established in 2000 and currently comprising nine isolated species, belongs to the order Bacteroidales. Despite its increasing ecological and clinical relevance, the genus remains taxonomically ambiguous, and criteria for genus-level classification have not been systematically assessed. In this study, we re-evaluated the taxonomy of Dysgonomonas using core genome phylogeny, average amino acid identity and percentage of conserved proteins. These genome-based metrics and physiological data revealed that the genus Dysgonomonas comprises at least three distinct genus-level lineages, and (i) Dysgonomonas sensu stricto represented by Dysgonomonas gadei, (ii) Indolivaga gen. nov. represented by Dysgonomonas capnocytophago

SUBMITTER: Takahashi K 

PROVIDER: S-EPMC12816885 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature