Actinomycetales

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Actinomycetales
Actinomyces israelii.jpg
Scanning electron micrograph of Actinomyces israelii.
Scientific classification
Kingdom: Bacteria
Phylum: Actinobacteria
Class: Actinobacteria
Subclass: Actinobacteridae
Order: Actinomycetales
Buchanan, 1917
Suborders/Families

The Actinomycetales are an order of Actinobacteria. They 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[edit]

Actinomycetales are Gram-positive, but several species have complex cell wall structures that make the Gram staining unsuitable (e.g. Mycobacteriaceae).

References[edit]