Numbers of synteny gene clusters across 25 plant mt genomes.

Note: Numbers of synteny gene clusters differed across C. taitungensis (Ct), A. thaliana (At), Beta vulgaris subsp maritima (Bvm), Beta vulgaris subsp vulgaris (Bvv), B. juncea (Bj), B. napus (Bn), B. oleracea (Bo), C. papaya (Cap), C. lanatus (Cl), C. pepo (Cup), G. hirsutum (Gh), N. tabacum (Nt), R.communis (Rc), S. latifolia (Sl), V. radiata (Vr), V. vinifera (Vv), O. rufipogon (Or), Oryza sativa subsp indica (Ori), Oryza sativa subsp japonica (Orj), S. bicolor (Sb), T. dactyloides (Td), T. aestivum (Ta), Z. luxurians (Zl), Z. mays (Zm) and Z. perennis. The two Beta genomes in the first row were: 1, Beta vulgaris subsp maritima; 2, Beta vulgaris subsp vulgaris, and the two Oryza genomes in the first row were: 1, Oryza sativa subsp indica; 2, Oryza sativa subsp japonica. Any two genes linked were counted as one synteny gene cluster.