Erysipelotrichia

The Erysipelotrichia are a class of bacteria of the phylum Bacillota. Species of this class are known to be common in the gut microbiome, as they have been isolated from swine manure^[1] and increase in composition of the mouse gut microbiome for mice switched to diets high in fat.^[2]

Erysipelotrichia
Cellular and colonial morphology of Erysipelothrix rhusiopathiae. Upper row: ×1200, crystal violet; lower row: ×32
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Bacillota
Class:	Erysipelotrichia Ludwig, Schleifer & Whitman 2010
Order:	Erysipelotrichales Ludwig, Schleifer & Whitman 2010
Families
Coprobacillaceae Erysipelotrichaceae Turicibacteraceae
Synonyms
"Erysipelotrichidae" corrig. Cavalier-Smith 2020

This class has the unusual phylogenetic position (according to phylogenomic and 16S rRNA studies) of branching within Mycoplasmatota, a phylum largely without peptidoglycan cell wall. Its ability to make a peptidoglycan and sporulate, combined with this position as well as Mycoplasmotota metagenomes with similar gene contents, imply that the Mycoplasmatotal lineages have independently reduced their cell walls.^[3]

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)^[4] and National Center for Biotechnology Information (NCBI).^[5]

16S rRNA based LTP_10_2024[6][7][8]	120 marker proteins based GTDB 09-RS220[9][10][11]
Culicoidibacterales Turicibacteraceae♦ Haloplasmatales Acholeplasmatales Erysipelotrichales Asteroleplasma Robinson & Freundt 1987 Coprobacillaceae♦ Erysipelotrichaceae♦ Mycoplasmatales	Culicoidibacterales Turicibacteraceae♦ {MOL361} Haloplasmatales Mycoplasmatota "Aphodocolales" "Bathyoplasmales" (sic) "Izemoplasmatales" Acholeplasmatales "Caccosomales" Erysipelotrichales Coprobacillaceae♦ Erysipelotrichaceae♦ Mycoplasmatales Mollicutes

♦ Paraphyletic Erysipelotrichia

See also

• List of bacterial orders
• List of bacteria genera