Fig. 4

Ancestral genome content reconstruction of the 20 vibrios with complete genomes. The numbers of gene gain and loss are shown above each branch, and the numbers of gene present at each node are shown below the corresponding branch. The area of the circle at each node indicate the genome size of the node. Nodes with more gene gain events (net gains > net losses) are indicated in yellow; Nodes with more gene loss events (net losses > net gains) are indicated in green; Nodes with significant genome expansions (> 10% net gains) are indicated in red; Nodes with significant genome expansions and reductions at the same time (> 10% net gains and > 10% net losses) are indicated in blue. The bar chat on the right indicates the orthologues number of each terminal node