Fig. 2

a Distribution of all identified SNPs in lineage 7 strains based on the Cluster of Orthologous Classification (COG). The green color defines the synonymous SNPs and the red color the non-synonymous SNPs. b Similarity matrix based on whole genome analysis. The percentages indicated in each box correspond to the identity between two isolates at the genomic level. Letter codings are described as follows: [C] Energy production and conversion, [D] Cell cycle control, cell division, chromosome partitioning, [E] Amino acid transport and metabolism, [F] Nucleotide transport and metabolism, [G] Carbohydrate transport and metabolism, [H] Coenzyme transport and metabolism, [I] Lipid transport and metabolism, [K] Transcription, [L] Replication, recombination and repair, [M] Cell wall/membrane/envelope biogenesis, [N] Cell motility, [O] Post-translational modification, protein turnover, and chaperones, [Q] Secondary metabolites biosynthesis, transport, and catabolism, [T] Signal transduction mechanisms, [U] Intracellular trafficking, secretion, and vesicular transport, [V] Defense mechanisms