, Volume 101, Issue 1, pp 25–29 | Cite as

Production of sterigmatocystin by Aspergillus versicolor isolated from roughage

  • Peter Lepom
  • Helga Kloss


A total of 69 samples of hay and straw collected during the winter period of 1984/85 were surveyed for their contamination by Aspergillus versicolor. The percentage of A. versicolor-positive samples was 14.5%. Nineteen A. versicolor strains mainly isolated from roughage were tested for the production of sterigmatocystin. All of the isolates examined were capable of producing different levels of sterigmatocystin on a cracked corn substrate. The majority of these strains were highly toxigenic; 53% of the isolates produced more than 500 mg/kg of sterigmatocystin. These findings suggest that corn is a very suitable substrate for sterigmatocystin production and that particularly in the surface layers of feed stocks and corn silos such toxigenic strains of A. versicolor can produce considerable growth and possibly sterigmatocystin, too.

Key words

Aspergillus versicolor sterigmatocystin 


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Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers 1988

Authors and Affiliations

  • Peter Lepom
    • 1
  • Helga Kloss
    • 1
  1. 1.Academy of Agricultural Sciences of the German Democratic RepublicInstitute of Forage Production PaulinenauePaulinenaueGDR

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