Chromosomal alignment of five mesorhizobial species (A–D) visualized using Mauve and a phylogenetic tree (E). Chromosomal alignments for 7653R and MAFF303099 (A), 7653R and WSM1271 (B), 7653R and WSM2073 (C), and 7653R and WSM2075 (D) were created using Mauve software. Each colored block represents a synteny block and is internally independent from genomic rearrangement. White regions correspond to unaligned sequences that likely contain sequence elements specific to a particular genome. Blocks below the center line indicate regions that are aligned in the reverse complement (inverse) orientation. Phylogenetic tree (E) created by Mauve based on DNA sequence consistency.