Observation 63714: Aspergillus alliaceus Thom & Church

This isolate of Aspergillus alliaceus was found in a soil sample from a pistachio orchard including all the species of pistachio trees transplanted from their indigenous Asian country habitats to the USDA Wolfskill Germplasm Repository near Winters, Ca. The identification of the isolate was confirmed by USDA mycologist, Maren Klich, author of “Identification of Common Aspergillus Species”. This find was included in the report “Comparisons of Ochratoxigenic Aspergillus lanosus and A. alliaceus Isolates From California Tree Nut Orchards” on p.103 of “Proceedings of the 3rd Fungal Genomics,4th Fumonisin, and 16th Aflatoxin Elimination Workshops” and in the paper “Ochratoxin Production by the Aspergillus ochraceus Group and Aspergillus alliaceus” in Applied and Environmental Microbiology, May 2002, p. 2326-2329, Vol. 68, No. 5. This paper was the first report of ochratoxin contamination on moldy figs or of any food product produced by Aspergillus alliaceus.


Grown on YES broth in a 250 ml flask. The small black balls are Aspergillus alliaceus sclerotia.
The larger round balls in the left area of the photo are ascospores, and the smaller brown balls are asexual conidia. 1,000 X mag
Petromyces alliaceus ascospores are made in cleistothecia which are found inside the hollow interior of the sclerotia often two cleistothecia in a sclerotium, one each half. The upper portion of the left half of a sclerotium has been removed in the photo exposing the brownish cleistothecium sac in ...

Proposed Names

84% (1)
Eye3 Eyes3
Used references: Raper, K.B., and Fennell, D.I. The Genus Aspergillus
Mycopathologia. 2006 Sep;162(3):215-23. Ochratoxins: a global perspective. Bayman P, Baker JL.
Appl Environ Microbiol. 2002 May; 68(5): 2326–2329.Ochratoxin Production by the Aspergillus ochraceus Group and Aspergillus alliaceus Paul Bayman,James L. Baker, Mark A. Doster, Themis J. Michailides, and Noreen E. Mahoney
28% (1)
Used references: Raper, K.B., and Fennell, D.I. The Genus Aspergillus 1965. &

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Eyes3 = Current consensus


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Created: 2011-02-20 14:20:33 CST (-0500)
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