Figure 4
Phylogenetic analysis based on the orthologous gene-content patterns in a variable genomic region. (a) A maximum parsimony phylogeny based on gene-content variation in a 150 000-bp variable region that houses extensive genomic rearrangements and SNP variation. Clusters match compatibility-type (CT) groupings derived from social swarm merger assays. Bootstrap values from 100 pseudo-replication steps are shown above the branches in the tree. Branches with low support (values below 50) were collapsed. (b) A visual representation of both the absence (black) and presence of single (light red) and multicopy (dark red) genes in the focal 150-kb region. Genes were grouped by gene orthology classification. Strain A92 is shown in grey to highlight the incongruence of its phylogenetic position and CT grouping.
