Fig. 1.

The Pectobacterium pangenome. a The distribution of sizes of all (22,347) homology groups. The size of a homology group is determined by the number of distinct genomes. b Simulation of increase of the pangenome size and the decrease of core-genome size on gene level using random sampling of genomes over 10,000 iterations. Colored dots represent the number of classified homology groups for random genome combinations, black dots indicate the median of each category. c Average gene gain and loss by the addition of genomes to the pangenome. d Proportion of COG functional categories assigned to homology groups. The asterisk above bars denotes the COG category is significantly (p < 0.05) more abundant in that class than other gene classes (core, accessory, unique). COG categories A, B, W, Y, Z were excluded considering their abundance below 1%