B. petrii syntenic plot. Syntenic plot between the genomes of B. petrii strain DSMZ12804, B. bronchiseptica RB50, B. parapertussis 12822, B. pertussis Tohama I and B. avium 197N. The diagram depicts x-y plots of dots forming syntenic regions between B. petrii (x-axis) and the three other Bordetella genomes (y-axis), with coordinates corresponding to the CDS number in each genome. Each coloured dot (green, B. bronchiseptica RB50; orange, B. parapertussis 12822; lilac, B. pertussis Tohama I; red, B. avium 197N) represents a B. petrii strain DSMZ12804 CDS having an orthologue in one of the three compared genomes. The orthologues were identified by bi-directional best BLASTP matches of amino acid sequences (e-value < e-30).