Complete mitogenome mapping of potato late blight pathogen, Phytophthora infestans A₂ mating type

Complete mitochondrial genome of Phytophthora infestans, A₂ mating type (MT) with a size of ≅37,767 bp was sequenced. A total of 53 protein-coding genes are predicted on both strands, including 25 tRNA, 2 rRNA, and 18 respiratory proteins. Gene order of A₂MT was consistent with that established in A₁, despite high level of polymorphism in both coding and non-coding regions. The mtDNA of A₂MT was found to have 99.5% and 99.4% homology with Ia and Ib, whereas 94.7% and 94.3% with IIa and IIb, respectively. Study of repeats revealed a dinucleotide (AT)₉ specific to A₁ and homology of cox1 gene sequence revealed the relationship among 50 Phytophthora species.