Comparison syntenic region of hau CMS mitotype with its maintainer line mitotype and the normal. (A) Comparisons between the hau CMS mitochondrial genome (horizontal axis) and its maintainer line mitochondrial genome (vertical axis) indicated that the nucleotide sequences of the syntenic region are well conserved; however, the syntenic order and direction were largely rearranged. The numbers refer to the syntenic regions between the hau CMS mitochondrial genome and its iso-nuclear maintainer line mitochondrial genome. (B) Alignment of the hau CMS maintainer line mitochondrial genome and the normal mitochondrial genome [GenBank: JF920288] sequenced by Chang in Brassica juncea. Apart from SNPs, they were consistent and no rearrangement was found between them.