The complete mitochondrial genome of a medicinal fungus, Tolypocladium ophioglossoides

Abstract

As part of a genome sequencing project for Tolypocladium ophioglossoides (T. ophioglossoides), a complete mitochondrial (mt) genome was assembled as a single circular dsDNA of 35,159 bp. Conserved genes including the large and small rRNA subunits, 25 tRNA and 15 protein-coding genes, were identified. In addition, 4 non-conserved open reading frames (ncORFs) in the intergenic and intronic regions were also identified. Transcription analyses using RNA-seq validated the expression of most conserved genes and ncORFs. Seven introns (groups I and II) were found within conserved genes, accounting for 21% of the mitogenome. All structural genes are located on one strand and are apparently transcribed in one direction. The complete mt genomes of T. ophioglossoides would be useful for future investigation of genetics, evolution and clinical identification of Tolypocladium species.

Keywords

• tolypocladium ophioglossoides
• mitochondrial genome
• hypocreales
• clavicipitaceae