Penicillium (anamorphic genus - antagonists)

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Penicillium expansum conidiophore (click on image to enlarge it)
Author(s): Gerald Holmes, Valent USA Corporation
Source: IPM Images

Penicillium (antagonists) Link, 1809

The genus contains more than 300 species which are widely distributed in temperate regions. Several of them are important as post harvest moulds on fruits. However, a number of other species or other strains are recognized as beneficial antagonists to plant diseases. This page deals with the latter group.

Morphologically the species resemble those of the genus Aspergillus. For propagation, the species mainly produce asexual conidia which are round and unicellular. During sexual reproduction, small spherical fruiting bodies (cleistothecia) with asci and 8 ascospores each are formed. The name of the genus is derived from the Latin word penicillus, a paint brush, in reference to the arrangement of its conidial chains.

Type species: Penicillium expansum.

For a taxonomic review see Visagie et al., 2014

This page only covers the antagonistic forms of Penicillium. For other forms see:

The following antagonistic species are currently entered in the system: