Paecilomyces is a genus of fungi. A number of species in this genus are plant pathogens.

Paecilomyces variotii.tif
Scanning electron micrograph of Paecilomyces variotii
Scientific classification e
Kingdom: Fungi
Division: Ascomycota
Class: Eurotiomycetes
Order: Eurotiales
Family: Trichocomaceae
Genus: Paecilomyces
Samson 1974

Several of the entomopathogenic species, such as "Paecilomyces fumosoroseus" have now been placed in the genus Isaria: in the order Hypocreales and family Cordycipitaceae.[1]

In 1974, R.A. Samson transferred the nematicidal species Paecilomyces lilacinus to this genus.[2] However, publications in the 2000s (decade) indicated that the genus Paecilomyces was not monophyletic,[3] and the new genus Purpureocillium was created to hold the taxon which includes P. lilacinum: with both parts of the name referring to the purple conidia produced by the fungus.[4]


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  1. ^ Retrieved 2015-11-18. {{cite web}}: Missing or empty |title= (help)
  2. ^ Samson RA. (1974). "Paecilomyces and some allied hyphomycetes". Studies in Mycology. Baarn: Centralbureau voor Schimmelcultures. 6: 58.
  3. ^ Inglis PW, Tigano MS (2006). "Identification and taxonomy of some entomopathogenic Paecilomyces spp. (Ascomycota) isolates using rDNA-ITS Sequences" (PDF). Genetics and Molecular Biology. 29 (1): 132–6. doi:10.1590/s1415-47572006000100025.
  4. ^ Luangsa-Ard J, Houbraken J, van Doorn T, Hong SB, Borman AM, Hywel-Jones NL, Samson RA (2011). "Purpureocillium, a new genus for the medically important Paecilomyces lilacinus". FEMS Microbiology Letters. 321 (2): 141–9. doi:10.1111/j.1574-6968.2011.02322.x. PMID 21631575.

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