|Scanning electron micrograph of Actinomyces israelii.|
The Actinomycetales are an order of Actinobacteria. A member of the order is often called an actinomycete. The actinomycetes are very diverse and contain a variety of subdivisions, as well as yet-unclassified isolates, mainly because some genera are very difficult to classify because of a highly niche-dependent phenotype. For example, Nocardia contains several phenotypes first believed to be distinct species before their differences were shown to be entirely dependent on their growth conditions.
Difficulty of classification
- Actinobacteria#Phylogeny, shows about 20 species
- See the NCBI webpage on Actinomycetales Data extracted from the "NCBI Taxonomy Browser". National Center for Biotechnology Information. Retrieved 2011-06-05.
- "Actinomycetales - List of Prokaryotic names with Standing in Nomenclature". Retrieved 2016-10-04.
- Labeda; et al. (2011). "Abstract of Reassessment of the systematics of the suborder Pseudonocardineae: transfer of the genera within the family Actinosynnemataceae Labeda and Kroppenstedt 2000 emend. Zhi et al. 2009 into an emended family Pseudonocardiaceae Embley et al. 1989 emend. Zhi et al. 2009". International Journal of Systematic Evolutionary Microbiology vol. 61. pp. 1259–1264. Retrieved 2011-06-11.
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