Figure 1

Physical map of the Triticum aestivum cv . Yumai 3 K-type CMS line (Ks3) mitochondrial genome. Circles display (from outside): (1) physical map scaled in kilobase pairs; different colored arcs indicate repeats of more than 20 kb, as in the legend shown in the bottom left corner: red, R1; blue-green, R2; blue, R3; golden yellow, R4; (2) and (3) coding sequences transcribed clockwise and counterclockwise, respectively: different colors represent the different genes, as in the legend shown in the bottom right corner: blue violet, ATP synthases; blue, NADH dehydrogenases; red, cytochrome c biogenesis proteins; purple-red, cytochrome c oxidases; black, cytochrome b oxidase; blue-green, ribosomal proteins; golden yellow, tRNA and rRNA genes; yellow-green, maturase and mttB; (4) GC content variations (in a 1000-bp window and 100-bp increments).