Onygenales

Coccidioides immitis, agent of coccidioidomycosis

The Onygenales are an order of Ascomycota.

Features

The fruit bodies are highly variable, ranging from its form macroscopically visible Ascostromata up to greatly reduced kleistothecischen and gymnothecischen forms.

The anamorphs are almost exclusively thallusförmig. They form arthroconidia simple or complicated forms.

Representatives of the order often have the property to reduce keratin. This often correlates the life as pathogens of vertebrates.

Way of life

The majority of the species live saprobiontisch.

The Onygenales include some pathogens. In mammals, they trigger histoplasmosis and Kokzidioidomykosen, lung diseases that can spread to other organs. They also provide the bulk of the dermatophytes, which can also trigger skin fungal diseases, such as the genera Trichophyton and Epidermophyton.

System

Outer systematics

The Onygenales were previously performed together with the Eurotiales as " Plectomycetes ". Today, both trims are placed in the subclass Eurotiomycetidae. You are a monophyletic taxon is. The cladogram of the class looks like this:

Onygenales

Eurotiales

Coryneliales

Inside systematics

The Onygenales the representatives of the until recently severed orders Ascosphaerales and Arachnomycetales are counted according to DNA sequence analysis. Hibbett also et al. In 2007, she not lead as own orders. The Onygenales sensu stricto thereby form a separate clade, which are compared with the other representatives. The classification of these in the Onygenales is not to be regarded as final.

Lumbsch and chicken village following families lead to the Onygenales ( with selected genera ):

  • Ajellomycetaceae with the single genus Ajellomyces
  • Arachnomyces
  • Arthroderma
  • Ctenomyces
  • Shanorella
  • This family also includes the anamorph genera Trichophyton, Epidermophyton and Microsporum.
  • Arrhenosphaera
  • Ascosphaera
  • Bettsia
  • Acitheca
  • Arachiotus
  • Gymnascella
  • Gymnoascoideus
  • Gymnoascus
  • Kraurogymnocarpa
  • Mallochia
  • Narasimhella
  • Orromyces
  • Arachnotheca
  • Ascocalvatia
  • Bifidocarpus
  • Coccidioides
  • Chlamydosauromyces
  • Leucothecium
  • Onygena
  • Pectinotrichum
  • Testudomyces
Dikarya Pezizomycotina Eurotiomycetes Epidermophyton floccosum Digital Object Identifier
621537
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