Figure 3

B. apis and B. tamiae share a large number of ancestral genes that have been lost in the eubartonellae. (a) Numbers of pan genome genes shared between B. apis (six genomes), B. tamiae (two genomes) and the eubartonellae (14 genomes). The number of core genome genes is shown in gray (that is, genes present in all 22 genomes). (b) Loss and gain of gene families mapped onto the phylogeny of Figure 2. Blue and red numbers indicate number of genes gained and lost at each branch, respectively. Black numbers below branches indicate number of gene families present in the ancestral genome at a given branch. Colored shading highlights the three groups of interest: B. apis (blue), B. tamiae (green) and eubartonellae (yellow). (c) Distribution of the 737 genes that were lost on the ancestral branch of the eubartonellae into subsets of shared genes according to the pan genome analysis in a.