Fusarium toxins and total fungal biomass indicators in naturally contaminated wheat samples from north-eastern Poland in 2003

Juliusz Perkowski (1) , Marian Wiwart (2) , Maciej Buśko (3) , Magdalena Laskowska (3) , Franz Berthiller (4) , Wolfgang Kandler (4) , Rudolf Krska (5, 6)

1 Department of Chemistry
2 Department of Plant Breeding and Seed Production
3 Department of Chemistry
4 Institute for Agrobiotechnology (IFA-Tulln)
5 Christian Doppler Laboratory for Mycotoxin Research
6 Institute for Agrobiotechnology (IFA-Tulln)

Concentrations of fungal metabolites were measured in 32 wheat grain samples from north-eastern Poland in 2003. The samples originated from fields cultivated conventionally (but varying in chemical protection level) or cultivated organically. Concentrations of Fusarium toxins (HT-2, DON, 3-AcDON, NIV), trichodiene, microbial biomass indicators (fungal ergosterol and general ATP) and seed vigour were assessed. High variation between samples was observed, depending on their origin. Seed from organic farms contained similar amounts of Fusarium toxins but more ergosterol and ATP than conventionally grown and chemically protected seed. The highest levels of toxins and ergosterol were detected in samples from conventional cultivation lacking chemical protection. Intensive agronomic practices (including complete chemical protection) significantly lowered the levels of ergosterol, ATP and trichodiene, as compared with other cultivation systems.

Mots clés: Life Sciences

Juliusz Perkowski, Marian Wiwart, Maciej Buśko, Magdalena Laskowska, Franz Berthiller, et al.. Fusarium toxins and total fungal biomass indicators in naturally contaminated wheat samples from north-eastern Poland in 2003. Food Additives and Contaminants, 2007, 24 (11), pp.1292-1298. ⟨10.1080/02652030701416566⟩. ⟨hal-00577463⟩