Figure 1.

Mitochondrial genome maps of sterile line 138A and maintainer line 138B. (A) Mitochondrial genome map of 138A. (B) mitochondrial genome map of 138B. Genes with the names inside the circle are transcribed clockwise. Genes with names outside the circle are transcribed counterclockwise. The colors of the genes denote the functions of the gene products. Syntenic sequence blocks between genomes are depicted on the inner circles to separate blocks in different directions. In the center of the maps are the sterile flower of 138A and the normal fertile flower of 138B, respectively.