Figure 1.

One maximum parsimony phylogram from each of the six genes sequenced. CI, consistency index; RI, retention index; RC, rescaled consistency index. Numbers by nodes represent bootstrap support ≥50% from 1,000 replications. The seven biogeographically structured lineages of the F. graminearum clade are color-coded by origin as shown in Fig. 3. The arrow on each phylogram indicates the position of the hybrid strain 28721, which is resolved cladistically within either Asian (yellow code) or African (blue code) lineages. The 3-O-acetyltransferase (i.e., TRI101) allele of 28721 is an Asian–African hybrid (see Fig. 2).