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SESSION 1: FUSARIUM – GENETICS, GENOMICS AND SYSTEMS BIOLOGY
Comparative genomics between 3- and 15-ADON F.
graminearum chemotypes
S. Walkowiak, L. Wang, G. Subramaniam
Eastern Cereal and Oilseed Research Centre, Ottawa, Canada
E-mail: rajagopal.subramaniam@agr.gc.ca
Fusarium graminearum is the principal cause of fusarium head blight in North
America. The disease results in severe losses in yield and quality of cereals.
Epidemiological studies document that the large proportion of F. graminearum
isolates produce 3- or 15-acetyl deoxynivalenol (ADON). Recent studies show a
shift from 15-ADON to 3-ADON producers in Canada and north central USA. In
greenhouse studies, the 3-ADON isolates are more aggressive and are able to
spread quicker than its counterpart. Furthermore, the two-stage culture used to
induce 15-ADON production do not show accumulation of 3-ADON. These
differences between the two chemotypes prompted us to sequence several 3- and
15-ADON isolates. The analysis of this deep sequencing will be addressed.
Keywords: comparative genomics, 3-ADON, 15-ADON
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