Blautia celeris

Blautia celeris
Scientific classification Edit this classification
Domain: Bacteria
Kingdom: Bacillati
Phylum: Bacillota
Class: Clostridia
Order: Lachnospirales
Family: Lachnospiraceae
Genus: Blautia
Species:
B. celeris
Binomial name
Blautia celeris
Lagkouvardos et al. 2021
Type strain
NSJ-34T (= CGMCC 1.32807T)

Blautia celeris is a species of Gram-positive, obligately anaerobic, non-spore-forming, and non-motile bacteriua in the genus Blautia of the family Lachnospiraceae. It was isolated from the feces of a healthy adult and formally described as a novel species in 2021.[1][2]

Etymology

The species name celeris derives from Latin celeris, meaning “rapid,” referring to the relatively fast growth of the type strain on solid media.[1]

Taxonomy

Blautia celeris belongs to the phylum Bacillota, class Clostridia, order Eubacteriales, and family Lachnospiraceae. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain NSJ-34T shares 97.9% identity with Blautia hominis and clusters within the genus Blautia. However, average nucleotide identity (ANI) and digital DNA–DNA hybridization (dDDH) values between NSJ-34T and its closest relatives, including B. hominis and Blautia producta, were well below species demarcation thresholds (ANI ≤ 85.3%, dDDH ≤ 30.2%), supporting its classification as a novel species.[1]

Morphology and physiology

Cells of Blautia celeris are straight rods with tapered ends, measuring approximately 1.5–1.8 μm in length and 0.7–1.2 μm in width. They occur singly or in dividing pairs. Colonies grown on modified GAM agar are yellow, raised, rough, and irregular, becoming visible after 3 days of incubation under anaerobic conditions. B. celeris grows optimally at 37 °C and pH 7.0–7.5. The organism is non-motile, non-spore-forming, and strictly anaerobic.[1]

Ecology

B. celeris was isolated from feces of a healthy adult, indicating its role as a commensal bacterium in the human gut microbiota. Like other members of the genus, it may participate in the fermentation of dietary substrates and contribute to short-chain fatty acid (SCFA) production.

See also

References

  1. ^ a b c d Lagkouvardos, I.; Lesker, T. R.; Hitch, T. C. A.; Gálvez, E. J. C.; Schloter, M.; Haller, D.; Overmann, J.; Clavel, T. (2021). "Sequence and cultivation study of Muribaculaceae reveals novel species, host preference, and functional potential of this yet undescribed family". Microbiome. 9 (1): 209. doi:10.1186/s40168-021-01064-3. PMC 8140505. PMID 34706705.
  2. ^ "Species: Blautia celeris". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 22 July 2025.
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