Clostridioides

Clostridioides is a genus of Gram-positive bacteria, which includes Clostridioides difficile, a human pathogen causing an infectious diarrhea.

Clostridioides
SE micrograph of Clostridioides difficile colonies from a stool sample
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Bacillota
Class:	Clostridia
Order:	Peptostreptococcales
Family:	Peptostreptococcaceae
Genus:	Clostridioides Lawson and Rainey 2016[1]
Type species
Clostridioides difficile (Hall & O'Toole 1935) Lawson et al. 2016
Species
C. difficile
Synonyms
"Peptoclostridium" Yutin & Galperin 2013 non Galperin et al. 2016 non Donker 1926

Taxonomy

The genus Clostridioides was created to describe a few species formerly in the genus Clostridium which have been shown to be their own genetically distinct genus using 16S rRNA gene sequencing analysis.^[2] However, both names are still in use and valid under the International Code of Nomenclature of Prokaryotes.^[3] Since C. mangenotii was further separated into a distinct genus in 2024,^[4] Clostridioides is a monotypic genus.

Description

They are obligate anaerobes capable of producing endospores. The normal, reproducing cells of Clostridioides, called the vegetative form, are rod-shaped, which gives them their name, from the Greek κλωστήρ or spindle. Clostridioides endospores, like Clostridium endospores, have a distinct bowling pin or bottle shape, distinguishing them from other bacterial endospores, which are usually ovoid in shape.^{[citation needed]}

See also

• List of bacterial orders
• List of bacteria genera