Real-time PCR for quantification of toxigenic Fusarium species in cereals

Tuija Sarlin, Teija Koivula, M. Jestoi, A. Rizzo, S. Paavanen-Huhtala, T. Yli-Mattila, Auli Haikara

    Research output: Contribution to conferenceOther conference contributionScientific

    Abstract

    Fusarium species are potential mycotoxin producers in cereals. In near future EU is going to set the maximum limit values for Fusarium toxins in raw cereals and cereal products. Mycotoxin analyses are expensive and time-consuming hence a rapid and reliable quantification method for toxigenic Fusarium species is needed in order to be able to evaluate the mycotoxin risk in cereal-based industry. We have applied real-time PCR technique for the quantification of trichothecene-producing Fusarium species present in barley and malt samples. PCR results were compared to the amount of trichothecenes determined in the samples. Furthermore, highly toxigenic Fusarium graminearum was quantified in cereals by real-time PCR. DNA was extracted from ground kernels using FastDNA Spin Kit for Soil and analysed in a LightCycler„¥ system using the double-stranded DNA ¡Vbinding fluorescent dye SYBR Green I or the fluorigenic TaqMan probes. Both naturally and artificially contaminated grains were analysed. PCR results correlated with the trichothecene content of the grain samples. Non-specific products such as primer dimers were amplified in the SYBR Green I assay, which interfered the quantification. Non-specific amplicons were not detected with the TaqMan probes. In addition, this assay was regarded as sensitive and reproducible.
    Original languageEnglish
    Publication statusPublished - 2004
    MoE publication typeNot Eligible
    EventFOSARE Seminar Series 5 Contaminants and Influence of Agricultural Practices - Brussels, Belgium
    Duration: 18 Mar 200419 Mar 2004

    Seminar

    SeminarFOSARE Seminar Series 5 Contaminants and Influence of Agricultural Practices
    CountryBelgium
    CityBrussels
    Period18/03/0419/03/04

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