General features and comparison of the R. etli genome with complete genomes of species of the order Rhizobiales. For the chromosome, only matches involving two or more adjacent BDBHs against the chromosome of the other species are shown. For plasmids, all of the BDBHs are shown. In the comparisons, blue indicates chromosomal matches and red designates the matches with accessory elements (plasmids or secondary chromosomes). Descriptions for the chromosome are presented from the innermost circle outward: GC skew, IS and phage integrases, GC content (blue, low GC; gray, medium GC; red, high GC), codon usage as measured by cri (16), tRNAs, rRNAs, scale (each segment represents 182,331 bp), and predicted CDSs on the reverse strand and forward strand in color code (see below). The outermost blue rings show the shared BDBHs between R. etli and the circular chromosome of the following Rhizobial species: S. meliloti; A. tumefaciens C58 U Washington; A. tumefaciens C58 Cereon; B. melitensis; B. suis; B. abortus, M. loti; B. japonicum, R. palustris, and B. quintanae; and B. henselae in concentric circles from the innermost circle. In p42a and p42b, from the innermost circles outward: IS and phage integrases; GC content; codon usage (CRI); scale; color-coded CDS; shared BDBHs with complete sequences of plasmids pRi1724 (A. rhizogenes), pNGR234a (Rhizobium spp), pTi Sakura (A. tumefaciens), and symbiotic island of M. loti R7A; shared BDBHs with the complete genomes of S. meliloti, A. tumefaciens C58 U Washington, A. tumefaciens C58 Cereon, B. melitensis, B. suis, M. loti, B. japonicum, and R. palustris. Circles in p42b, p42c, p42e, and p42f, from the innermost outward, describe the following: GC; codon usage (CRI); scale; color-coded CDS; and S. meliloti, A. tumefaciens C58 U Washington, A. tumefaciens C58 Cereon, B. melitensis, B. suis, M. loti, B. japonicum, and R. palustris. Color codes for the CDS according to their functional category are as follows: orange, amino acid biosynthesis; light red, biosynthesis of cofactors; pale green, macromolecule biosynthesis; mid red, nucleotide biosynthesis and central intermediary metabolism; cyan, global functions; yellow; nitrogen fixation; red, energy transfer; magenta, degradation; pink, structural elements; pale pink, cell processes; dark gray, transport; light gray, adaptations; blue, nodulation; green, elements of external origin; sky blue, transcriptional regulators; brown, hypotheticals.