Most actinomycetes are typically Gram positive, filamentous, partially acid-fast, branched bacteria that have many microbiological characteristics in common with members of the genera Mycobacterium and Corynebacterium. The major groups of the order Actinomycetales, are actinoplanetes, maduromycetes, nocardioform actinomycetes, and streptomycetes.
Public health England has updated the protocol for the identification of aerobic actinomycetes.
The pathogenic genera within the aerobic actinomycetes are Nocardia, Actinomadura,
Streptomyces, Rhodococcus, Gordonia, Tsukamurella and Tropheryma whipplei.
Posted by Dr. Tim Sandle