Split networks generated using QNet with embedded quartets compatible with the plurality consensus signal.

These evolutionary relationships were inferred from maximum likelihood trees of 100 bootstrap replicates, weighted by frequency, of (A) house-keeping gene sequences (chiA, gyrB, dnaJ, and recA) and (B) T3SS gene sequences (aexT, aexU, ascFG, ascV). Alignments were divided at predicted recombination breakpoints determined by distinct evolutionary histories. Edge lengths are scaled to the number of embedded quartets in agreement with that split and split widths represent a departure from a tree-like signal. In the case of Aeromonas veronii group strains splits with width are likely to be indicative of recombination across that split.