Fig. 3

a Euler diagram of orthologous clusters. Euler diagram representing the core genome, the strain-specific orthologous clusters and the orthologous clusters shared only bye two Cardinium genomes. b Percentages of core, dispensable, and specific genes in three Cardinium genomes. The box of the core genome set is displayed in red; the genes with the highest (524) numerical values in all three genomes belong to the core genome, especially cBtQ1, which accounts for approximately 79.64%. The box of the strain-specific set is shown in yellow, the Cardinium cSfur has the most strain-specific genes, accounting for 24.66%