Comparative analysis of mitochondrial genomes from closely related Rhynchosporium species reveals extensive intron invasion.

Highlights: [•] We report the complete mitochondrial genomes of four closely related fungal species. [•] Three mitochondrial genomes significantly expanded as result of intron invasion. [•] The mitochondrial mutation rate was 77 times higher than the nuclear mutation rate. [•] Our study revealed a very dynamic mitochondrial genome evolution. [Copyright &y& Elsevier]