The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria in the order

Actinomycetales The Actinomycetales is an order of Actinomycetota. A member of the order is often called an actinomycete. Actinomycetales are generally gram-positive and anaerobic and have mycelia in a filamentous and branching growth pattern. Some actinomycetes ...

that contains the medically important genus ''

Actinomyces ''Actinomyces'' is a genus of the Actinomycetia class of bacteria. They all are gram-positive. ''Actinomyces'' species are facultatively anaerobic and they grow best under anaerobic conditions. ''Actinomyces'' species may form endospores, an ...

''. These organisms are closely related to the mycobacteria, but were originally classified as fungi because they were thought to be transitional forms between

bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were am ...

and

fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately fr ...

Genera

The family ''Actinomycetaceae'' comprises the following genera: * '' Actinobaculum'' Lawson et al. 1997 * "'' Actinomonospora''" Castellani et al. 1959 * ''

'' Harz 1877 (Approved Lists 1980) * ''

Actinotignum ''Actinotignum'' is a bacterial genus in the family Actinomycetaceae. See also * Bacterial taxonomy Bacterial taxonomy is the taxonomy, i.e. the rank-based classification, of bacteria. In the scientific classification established by Carl Lin ...

'' Yassin et al. 2015 * "'' Ancrocorticia''" Xu et al. 2019 * '' Arcanobacterium'' Collins et al. 1983 * ''

Boudabousia ''Boudabousia'' is a genus of bacteria from the family of Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria in the order Actinomycetales that contains the medically important genu ...

'' Nouioui et al. 2018 * ''

Bowdeniella ''Bowdeniella'' is a species of bacteria from the family of Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria in the order Actinomycetales that contains the medically important ge ...

'' corrig. Nouioui et al. 2018 * ''

Buchananella ''Buchananella hordeovulneris'' is a species of bacteria from the family Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria in the order Actinomycetales that contains the medically ...

'' Nouioui et al. 2018 * ''

Flaviflexus ''Flaviflexus'' is a genus of bacteria from the family Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria in the order Actinomycetales that contains the medically important genus ' ...

'' Du et al. 2013 * ''

Fudania ''Fudania jinshanensis'' is a gram-positive species of bacteria from the family Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria in the order Actinomycetales that contains the m ...

'' Zhu et al. 2019 * ''

Gleimia ''Gleimia'' is a genus of bacteria from the family of Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria in the order Actinomycetales that contains the medically important genus '' ...

'' Nouioui et al. 2018 * '' Mobiluncus'' Spiegel and Roberts 1984 * "'' Neoactinobaculum''" Belkacemi et al. 2019 * ''

Pauljensenia ''Pauljensenia hongkongensis'' is a Gram-positive, strictly anaerobic and non-spore-forming species of bacteria from the family Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria ...

'' Nouioui et al. 2018 * ''

Peptidiphaga ''Peptidiphaga gingivicola'' is a Gram-positive species of bacteria from the family Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacteria in the order Actinomycetales that contains t ...

'' Beall et al. 2021 * '' Schaalia'' Nouioui et al. 2018 * "'' Scrofimicrobium''" Wylensek et al. 2020 * '' Trueperella'' Yassin et al. 2011 * ''

Varibaculum ''Varibaculum'' is a Gram-positive, facultatively anaerobic, non-spore-forming and non-motile genus of bacteria from the family of Actinomycetaceae The Actinomycetaceae (often called actinomycetes or mycelial bacteria) are a family of bacter ...

'' Hall et al. 2003 * '' Winkia'' Nouioui et al. 2018

Phylogeny

The currently accepted taxonomy is based on the

List of Prokaryotic names with Standing in Nomenclature List of Prokaryotic names with Standing in Nomenclature (LPSN) is an online database that maintains information on the nomenclature, naming and Taxonomy (biology), taxonomy of prokaryotes, following the taxonomy requirements and rulings of the In ...

(LPSN). The phylogeny is based on whole-genome analysis.

Notes

References

External links

*https://web.archive.org/web/20070929122155/http://sn2000.taxonomy.nl/Main/Classification/111575.htm * Actinomycetales Bacteria families {{actinobacteria-stub