Urnula craterium (Schwein.) Fr. (1851) has been reported from North America, Europe, and Asia, and can be a pathogen on various hardwood species. In this study, we investigated the mitochondrial genome of U. craterium. The biology and taxonomy of this fungus is poorly studied and there are no mitogenomes currently available for any member of the Sarcosomataceae (Order Pezizales). The complete mitogenome of U. craterium comprises 43 967 bps and encodes 14 protein-coding genes, a complete set of tRNAs and rRNA genes. A novel feature of the mitogenome is the presence of a single subunit DNA polymerase-coding region that is typically associated with linear invertron-type plasmids. The mitogenome may offer insights into the evolution of mitogenomes among members of the Pezizales with regards to gene content and order, mobile elements, and genome sizes.
Keywords: Pezizales; group I introns; génomes mitochondriaux; introns du groupe I; linear plasmids; mitochondrial genomes; plasmides linéaires.