Fig. 2: Extensive recent recombination within the Sal. ruber and E. coli genomes. | Nature Communications

Fig. 2: Extensive recent recombination within the Sal. ruber and E. coli genomes.

From: Microbial species and intraspecies units exist and are maintained by ecological cohesiveness coupled to high homologous recombination

Fig. 2

Pairwise reciprocal best match (RBM) genes were identified for eight Sal. ruber (A) and eight E. coli (B) genomes spanning different genomovars and clades/phylogroups using BLAST+ with default settings. Each rectangular marker represents a gene, colored differently for highly conserved/universal, core, and accessory genes (see key), and represents the nucleotide sequence identity of RBM genes (y-axis) shared between seven query genomes (each row) and the same reference genome (x-axis, RBM gene position in reference genome) sorted by their ANI values to the reference genome shown on the far right of the panels. Two genomes from the same genomovar as the reference genome are shown in the top 2 rows and other genomovars and phylogroups are shown below. Note the hotspots of sequence diversity among members of the same genomovar, and that some of the genes in these hotspots show ~100% nucleotide identity between the reference genome and genomes of other genomovars (e.g., blue arrows). Green arrows denote genomic islands specific to the reference genome (i.e., not shared with query genomes, denoted by lack of markers in the genomes not carrying the island in the corresponding region of the reference genome) while red arrows denote highly identical regions conserved within the genomovar.

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