Genomics and Transcriptomics of 3ANX (NX-2) and NX (NX-3) producing isolates of Fusarium graminearum

In this study, we used an -omics approach coupled with high resolution mass spectrometry to characterize twenty F. graminearum isolates collected from five distinct regions across Manitoba, containing both 3-acetyl deoxynivalenol (3ADON) and 15-acetyl deoxynivalenol (15ADON) chemotypes. These data identified regional F. graminearum populations within Manitoba that demonstrate distinct genomic variation and patterns of gene expression, particularly within pathogenicity associated processes. Further, we identified genetic variation and differential expression between isolates showing high and low levels of pathogenicity, allowing for the identification of previously characterized and novel putative pathogenicity factors, as well as regions of genetic diversity between these groups. Lastly, we detected production of 3ANX and/or NX mycotoxins within the majority of our twenty characterized F. graminearum isolates, suggesting the 3ANX chemotype may be more prevalent than previously expected in Canada. These findings highlight the diversity of F. graminearum across Manitoba, and more importantly uncover specific genomic regions and candidate pathogenicity factors influenced by this diversity. These data can ultimately help researchers develop improved disease management strategies against FHB and the dynamic populations of F. graminearum. Genomic and transcriptomic analysis of twenty distinct Fusarium graminearum isolates across Manitoba