Acta Vet. Brno 2015, 84: 47-53

Comparative data concerning aflatoxin contents in Bt maize and non-Bt isogenic maize in relation to human and animal health – a review

Vladimír Ostrý1,2, František Malíř2, Annie Pfohl-Leszkowicz3

1National Institute of Public Health in Prague, Center for Health, Nutrition and Food, Brno, Czech Republic
2University of Hradec Kralove, Faculty of Science, Department of Biology, Hradec Králové, Czech Republic
3University of Toulouse, INP/ENSA Toulouse, Department Bioprocess & Microbial Systems, Laboratory Chemical Engineering, Auzeville-Tolosane, France

Received June 6, 2014
Accepted November 26, 2014

Transgenic Bt maize is a potentially important tool against insect pest in the EU and other countries. Bt maize (e.g. MON 810, Bt 11) which carries the Bt gene is highly resistant to larval feeding of European corn borer, stalk borer, and Southwestern corn borer, depending on Bt toxin (δ toxin) production. Effective measures used to fight pests may often have positive side-effects in that they may also contribute to reducing mycotoxin concentrations. A systematic review has been used for the purposes of evaluating the studies on the reduction of aflatoxins in Bt maize. According to five studies, Bt maize has significantly lower concentrations of aflatoxins than non-Bt maize hybrids, only one study has shown no significant effect of Bt maize. Other studies have shown mixed results (four studies). The results of these studies were influenced by the year of sampling or by using maize breeding lines selected for resistance to aflatoxin accumulation.


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