Alternaria (anamorphic genus)

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Alternaria solani asexual spore (click on image to enlarge it)
Author(s): Paul Bachi, University of Kentucky Research and Education Center
Source: IPM Images

Alternaria Nees 1817

The genus is wide-spread and includes important plant pathogens like Alternaria alternata, Alternaria brassicicola or Alternaria solani. The species form dark coloured colonies on agar with brown, elliptical conidia often arranged in chains. The condidia are round on the side of the conidiophore and taper into a beak at the apical end. They contain vertical and often also longitudinal septa. The asci, if known, are usually cylindrical with 8 spores.

For a review see Woudenberg et al., 2013.


Currently, the following species have been entered into the system: