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Fungicide resistance issues in scab pathogen Fusarium graminearum and DON contamination in wheat

Zhonghua Ma: Institute of Biotechnology, Zhejiang University

<div>Fusarium head blight (FHB) caused by <em>F. graminearum </em>(Fg) and several other <em>Fusarium</em> spp. is a devastating disease of cereal crops. In addition to the yield loss caused by the disease, the contamination of infected grains with mycotoxins poses a serious threat to human and animal health. Currently, one primary method for management of FHB is through the application of fungicides during wheat anthesis due to the lack of highly resistant wheat cultivars. In this presentation, we will review some of recent advances in i) monitoring fungicide resistance in Fg; ii) resistance mechanisms of Fg to several major classes of fungicides including benzimidazoles, demethylation inhibitors, and a novel compound phenamacril; and iii) effects of fungicide treatment on mycotoxin biosynthesis. Finally, we will also discuss the strategy for management of fungicide resistance in FHB.</div>

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