Figure 2.

Core genome-based phylogenetic trees for the Escherichia coli and Klebsiella pneumoniae strains, respectively. Donor strain 3R was used as a reference in the E. coli phylogenetic tree. Different background colors in the strain name column indicate the outcome of conjugative transfer (green: success; pink: failure). The main phylogroups are depicted by differently colored triangles. The sources of the isolates are indicated by differently colored circles. Inc types and antimicrobial resistance gene profiles are indicated by the differently colored rectangles (open: negative; filled, positive).