title: Production of tremorgenic mycotoxins by isolates of Aspergillus fumigatus from sawmills in Sweden.
abstract: One hundred and six strains of A. 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 seven A. fumigatus strains. The amount of toxin varied between 0.6-8.0 microgram/10(8) conidia (mean value 2.3 micrograms/10(8) conidia, equivalent with 0.18%). No production of the mycotoxin gliotoxin was detected in 6 strains of A. 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.
authors.affiliation: Department of Forest Products, Swedish University of Agricultural Sciences, Uppsala.
authors.forename: C J
authors.initials: CJ
authors.lastname: Land
authors.forename: H
authors.initials: H
authors.lastname: Lundström
authors.forename: S
authors.initials: S
authors.lastname: Werner
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D001232:Aspergillus fumigatus / Q000737:chemistry*; D016468:Forestry; D007211:Indoles / Q000032:analysis*; D009183:Mycotoxins / Q000032:analysis*; D013045:Species Specificity; D013548:Sweden; D014197:Trees; D014934:Wood
chemical_list: D000393:Air Pollutants; D007211:Indoles; D009183:Mycotoxins; C009658:verruculogen