''Dysosmobacter welbionis'' is a species of strictly

anaerobic Anaerobic means "living, active, occurring, or existing in the absence of free oxygen", as opposed to aerobic which means "living, active, or occurring only in the presence of oxygen." Anaerobic may also refer to: *Adhesive#Anaerobic, Anaerobic ad ...

, non-spore-forming,

Gram-negative Gram-negative bacteria are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. Their defining characteristic is that their cell envelope consists ...

-staining,

rod-shaped bacterium Bacterial cellular morphologies are the shapes that are characteristic of various types of bacteria and often key to their identification. Their direct examination under a light microscope enables the classification of these bacteria (and archaea ...

in the genus ''

Dysosmobacter ''Dysosmobacter'' is a genus of strictly anaerobic, non-spore-forming, rod-shaped bacteria in the family Oscillospiraceae, order Eubacteriales. Members of this genus are part of the gut microbiota of humans and other animals and are of interest f ...

'', within the family

Oscillospiraceae Oscillospiraceae, also commonly called Ruminococcaceae, is a family of bacteria in the class Clostridia. All Oscillospiraceae are obligate anaerobes. However, members of the family have diverse shapes, with some rod-shaped and others cocci. With ...

and order

Eubacteriales The Eubacteriales are an order of bacteria placed within the class Clostridia. Phylogeny The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Informa ...

. It was first isolated from human

feces Feces (also known as faeces American and British English spelling differences#ae and oe, or fæces; : faex) are the solid or semi-solid remains of food that was not digested in the small intestine, and has been broken down by bacteria in the ...

and formally described in 2020 by Le Roy et al. The species name honors the Walloon Excellence in Life Sciences and BIOtechnology (WELBIO) program.

Taxonomy and isolation

''Dysosmobacter welbionis'' was isolated in 2017 from the feces of a healthy adult in Brussels, Belgium. The type strain J115^T is held in the DSMZ and LMG culture collections. Phylogenetic analysis places the species within the family Oscillospiraceae, and it is considered part of the human

gut microbiota Gut microbiota, gut microbiome, or gut flora are the microorganisms, including bacteria, archaea, fungi, and viruses, that live in the digestive tracts of animals. The gastrointestinal metagenome is the aggregate of all the genomes of the g ...

Morphology and physiology

''Dysosmobacter welbionis'' is a non-motile, rod-shaped bacterium. Although it stains Gram-negative, it is phylogenetically related to Gram-positive clades. It is strictly anaerobic and mesophilic, with optimal growth at 37 °C. The species produces

short-chain fatty acids Short-chain fatty acids (SCFAs) are fatty acids of two to six carbon atoms. The SCFAs' lower limit is interpreted differently, either with one, two, three or four carbon atoms. Derived from intestinal microbial fermentation of indigestible foods, ...

, notably

butyrate The conjugate acids are in :Carboxylic acids. {{Commons category, Carboxylate ions, Carboxylate anions Carbon compounds Anions ...

, through fermentation.

References

External links

LPSN entry for ''Dysosmobacter welbionis''

NCBI Taxonomy Browser: ''Dysosmobacter welbionis''

DSMZ entry for strain DSM 106889
{{Taxonbar, from=Q115846915 Gram-negative bacteria Anaerobes Oscillospiraceae Bacteria described in 2020