Ruthenibacterium lactatiformans is a species of Gram-negative, obligately anaerobic, non-spore-forming, bacteria in the family Oscillospiraceae. It is the only currently known species within the genus Ruthenibacterium, which was described by Shkoporov et al. in 2016 following its isolation from the feces of healthy human subjects.[1]
Ruthenibacterium lactatiformans is characterized as:
Gram-negative in staining (despite phylogenetic placement among Gram-positive phyla)
Rod-shaped and non-motile
Non-spore-forming
Strictly anaerobic
Ecology and clinical significance
Ruthenibacterium lactatiformans was originally isolated from the feces of healthy adult humans and is considered a commensal member of the gut microbiota. In 2024, the bacterium was identified in the first documented case of human infection. An elderly man with diabetes and renal failure developed vertebral osteomyelitis, and blood cultures later revealed the presence of R. lactatiformans using 16S rRNA gene sequencing.[2]
Type strain
The type strain is 585-1T, also known as:
DSM 100348T
VKM B-2901T
References
↑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. PMID27242263.
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