The European corn borer reportedly promotes the infection of maize by Fusarium spp. Stalk and ear rots caused by Fusarium spp. are often related to mycotoxin accumulation in maize kernels. As a result, food and animal feed from maize are more severely contaminated with Fusarium mycotoxins: e.g. fumonisins (FUM), deoxynivalenol (DON) and zearalenone (ZEA). Bt maize is primarily an important potential tool for insect pest protection, both in the European Union and in other countries. Bt maize carrying the Bt genes is highly resistant to European corn borer larval feeding due to Bt toxin (δ toxin) production. Effective measures to combat pests therefore often have a positive side-effect in that they also reduce mycotoxin levels. Comparative analysis was used to the evaluation of the studies dealing with the reduction of Fusarium mycotoxins in Bt maize. Nineteen out of 23 studies on Bt maize came to the conclusion that Bt maize is less contaminated with mycotoxins (FUM, DON, ZEA) than the conventional control variety in each case.
Ostry, V, J Ovesna, J Skarkova, V Pouchova, J Ruprich. "A review on comparative data concerning Fusarium mycotoxins in Bt maize and non-Bt isogenic maize." Mycotoxin Research 26.3 (2010): 141-5. Web. 16 Feb. 2019.
Ostry, V., Ovesna, J., Skarkova, J., Pouchova, V., & Ruprich, J. (2010). A review on comparative data concerning Fusarium mycotoxins in Bt maize and non-Bt isogenic maize. Mycotoxin Research, 26(3), 141-5. doi:10.1007/s12550-010-0056-5
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