Figure 7 .

Whole genome content analysis. Graphical representation of protein families created using the R software (R Development Core Team 2011). The 25 fully sequenced Reb-harboring taxa are represented on the x-axis and the other 816 fully sequenced bacterial taxa analyzed are represented on the y-axis. Each point on the graph represents a protein family (see Materials and Methods for details on how protein families were defined). For example, the Reb family (indicated by a green box) is present in 24 fully sequenced Reb-harboring taxa but in none of the remaining genomes. The 4 Rebs of Acidovorax avenae subsp. Avenae ATCC 19860 did not fall into the Reb protein family because they are very divergent (see Figure 5 and Figure S1). The other five unique protein families specific to Reb-harboring taxa (see main text) are shown with boxes corresponding to colors as defined in the legend to Figure 6.