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Production of tremorgenic mycotoxins by isolates ofAspergillus fumigatus from sawmills in Sweden

  • Mycotoxicoses And Mycotoxins
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Abstract

One hundred and six strains ofA. fumigatus were isolated from 21 sawmills in Sweden, and 73 of these strains were examined for production of fumitremorgen B and verruculogen (tremorgenic mycotoxins) on YES-medium using thin layer chromatography (TLC). Twenty-three strains (32%) were tremorgen producers and 50 strains (68%) were non-producers. Tremorgenic mycotoxins were detected in conidia of sevenA. fumigatus strains. The amount of toxin varied between 0.6–8.0 µg/108 conidia (mean value 2.3 µg/108 conidia, equivalent with 0.18%). No production of the mycotoxin gliotoxin was detected in 6 strains ofA. fumigatus. No tremorgens were detected during mould growth on wood substrates, in spite of the use of different wood species (Scots pine,Pinus sylvestris; Norway spruce,Picea abies and birch,Betula spp.), dried versus non-dried wood, bark (pine), leached wood, and wood after various sterilization methods.

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Authors and Affiliations

  1. Department of Forest Products, The Swedish University of Agricultural Sciences, P.O. Box 70081, S-75007, Uppsala, Sweden

    Carl Johan Land, Hans Lundström & Staffan Werner

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  1. Carl Johan Land
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  2. Hans Lundström
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  3. Staffan Werner
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Land, C.J., Lundström, H. & Werner, S. Production of tremorgenic mycotoxins by isolates ofAspergillus fumigatus from sawmills in Sweden. Mycopathologia 124, 87–93 (1993). https://doi.org/10.1007/BF01103107

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  • DOI: https://doi.org/10.1007/BF01103107

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