Figure 3

Schematic rearrangement of microsyntenic regions among S. meliloti, A. tumefaciens, M. loti and B. melitensis chromosomes. Panels: (a), S. meliloti chromosome (middle line) compared with A. tumefaciens circular (bottom line) and linear (upper line) chromosomes. (b), S. meliloti chromosome (lower line) compared with M. loti (upper line) chromosome. The M. loti chromosome was segmented in two fragments to maximize colinearity (see Methods). (c), S. meliloti chromosome (middle line) compared with B. melitensis chromosome I (bottom line), and II (upper line). oriC of Bm I was inverted to obtain maximal colinearity (see Methods). Red lines (orange for At-L and Bm-II chromosomes) represent the initial positions of the microsyntenic regions in each of the species analyzed.