Comparative mitochondrial genome analyses reveal conserved gene arrangement but massive expansion/contraction in two closely related Exserohilum pathogens.

ABSTRACT: Exserohilum turcicum and E. rostratum, two closely related fungal species, are both economically important pathogens but have quite different target hosts (specific to plants and cross-kingdom infection, respectively). In the present study, complete circular mitochondrial genomes of the two Exserohilum species were sequenced and de novo assembled, which mainly comprised the same set of 13 core protein-coding genes (PCGs), two rRNAs, and a certain number of tRNAs and unidentified open reading frames (ORFs). Comparative analyses indicated that these two fungi had significant mitogenomic collinearity and consistent mitochondrial gene arrangement, yet with vastly different mitogenome sizes, 264,948 bp and 64,620 bp, respectively. By contrast with the 17 introns cont

SUBMITTER: Ma Q 

PROVIDER: S-EPMC8956966 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature