Figure 7

Venn diagrams. Venn diagrams. EDGAR facilitates visualizing common gene pools of by Venn diagrams. This analysis exploits all CDS of the genomes and is not restricted to the core genome. In each individual analysis at most 5 genomes can be included, as considering more chromosomes results in rather confusing visualization. Results for the X. campestris strains pathogenic to crucifers and the rice-pathogenic X. oryzae that were clustered in the phylogenetic analysis (Figure 4) are displayed in panels A and C, respectively. Among the X. campestris chromosomes in panel A a particular high similarity between Xcc 33913 and Xcc 8004 became evident. The chromosomes shared 178 orthologous CDS exclusively, and further 225 CDS conjointly with strain Xca 756C. In panel C among the X. oryzae genomes, the chromosomes of X. oryzae pv. oryzae strains shared 375 orthologs, while the X. oryzae pv. oryzicola chromosome overlapped less with the Xoo chromosomes. In panel B the Xac and Xcv chromosomes that clustered in between the X. campestris and X. oryzae groups were compared with each other and a representative of the X. campestris and X. oryzae groups. The analysis brought to light a surprisingly high number of 690 orthologs shared among Xac, Xcv and the Xoo representative, indicating closer connections of these strains to the X. oryzae group than to the crucifer pathogenic X. campestris strains.