Gene order and cp genomic architecture of the seven land plant species, including C. japonica. Each colored gene segment shows the same gene order region among the seven land plants cp genomes. Gray, blue and orange boxes for each gene order show the relevant regions of LSC (Large Single Copy), SSC (Small Single Copy) and IR (Inverted Repeat) regions in the E. globulus (A), O. sativa (B), A. capillus (C), M. polymorpha (D), and C. taitungensis (E) cp genomes, respectively. In the P. thunbergii (F) and C. japonica (G) cp genomes, gray, blue and orange boxes show the relevant regions of the SSC and IR regions of the C. taitungensis cp genome. Red boxes in the P. thunbergii cp genome show the defined IR in the P. thunbergii cp genome. In the C. japonica cp genome, the black and white arrows show duplicated genes; trnI-CAU (black arrows), trnQ-UUG (white arrows).