Pleosporales

Konidienkette of Alternaria fungus

The Pleosporales are an order of Ascomycota that form an own subclass Pleosporomycetidae.

Features

The fruiting body is a perithecium Hysterothecium or Kleistothecium. The shape is very variable. The sterile part ( Hamathecium ) consists of paraphyses. The asci have a two-layered cell wall ( bitunicat ). The ascospores are in terms of color, shape and septation highly variable.

System

The Pleosporales are the most species-rich order in the class of Dothideomycetes.

Eriksson (2006) leads 13 families in the order. A work from 2009 still describes the Didymellaceae than 14 family of the order:

  • Delitschiaceae 3 genres
  • Didymellaceae a genre
  • Lophiostomataceae with 12 genera, for example, Herpotrichia
  • Phaeosphaeria
  • Leptosphaeria
  • Silver scurf ( Helminthosporium solani )
  • Cochliobolus
  • Lewia, anamorph Alternaria

Importance

The order contains some important economic plant pathogens: Cochliobolus heterostrophus causes the bleaching of corn, Leptosphaeria maculans infects canola seeds, Phaeosphaeria nodorum infects cereal.

Dikarya Pezizomycotina Digital Object Identifier
653418
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