A diagrammatic representation of relationship among bacterial spot xanthomonads, Xac and Xcc with respect to presence or absence of pathogenicity clusters. Similar color shade indicates high identity and similar cluster organization. Lower sequence identities compared to the reference are indicated by faded gray shades. Reference strain is indicated by asterisk next to the symbol. The absence of certain part of cluster is indicated by white. In the case of LPS cluster, Xv and Xac contain novel cluster regions in the C terminal region which is indicated by a different color. Xac and Xcv contain a plasmid borne type IV cluster. Although it differs from type IVA present in other bacterial spot xanthomonads, Xac and Xcv cluster is mentioned here under type IVA with different colors. A blank space indicates complete absence of gene cluster in that particular species. A more detailed representation of individual clusters can be found in figures 2 through 5.