Ruthenibacterium

Ruthenibacterium
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Bacillota
Class:	Clostridia
Order:	Eubacteriales
Family:	Oscillospiraceae
Genus:	Ruthenibacterium Shkoporov et al., 2016
Type species
Ruthenibacterium lactatiformans Shkoporov et al., 2016
Species [1]
Ruthenibacterium intestinale Hitch et al. 2025 Ruthenibacterium lactatiformans Shkoporov et al. 2016

Ruthenibacterium is a genus of Gram-negative, obligately anaerobic, non-spore-forming bacteria within the family Oscillospiraceae. The genus was first described in 2016 with the identification of its type species, Ruthenibacterium lactatiformans , isolated from human feces. ^[2]

Taxonomy

The genus Ruthenibacterium was established by Shkoporov et al. in 2016 following the isolation and characterization of two novel strains (585-1^T and 668) from the feces of healthy human subjects. Phylogenetic analysis based on 16S rRNA gene sequences indicated that these strains formed a distinct lineage within the family Oscillospiraceae, with less than 92% sequence similarity to their closest relatives, including Anaerofilum pentosovorans and Gemmiger formicilis . ^[2]

Species

Currently, the genus comprises two validly published species: ^[1]

• Ruthenibacterium intestinale Hitch et al. 2025
• Ruthenibacterium lactatiformans Shkoporov et al. 2016

References

1. genus/ruthenibacterium entry in LPSN ; Parte, Aidan C.; Sardà Carbasse, Joaquim; Meier-Kolthoff, Jan P.; Reimer, Lorenz C.; Göker, Markus (1 November 2020). "List of Prokaryotic names with Standing in Nomenclature (LPSN) moves to the DSMZ". International Journal of Systematic and Evolutionary Microbiology. 70 (11): 5607–5612. doi: 10.1099/ijsem.0.004332 .
2. Shkoporov, Andrei N.; Chaplin, Andrei V.; Shcherbakova, Victoria A.; Suzina, Natalia E.; Kafarskaia, Lyudmila I.; Bozhenko, Vladimir K.; Efimov, Boris A. (August 2016). "Ruthenibacterium lactatiformans gen. nov., sp. nov., an anaerobic, lactate-producing member of the family Ruminococcaceae isolated from human faeces". International Journal of Systematic and Evolutionary Microbiology. 66 (8): 3041–3049. doi:10.1099/ijsem.0.001143. PMID   27242263.