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Suillus is an important group of ectomycorrhizal fungi that often symbiose with Pinaceae. While the genus has 113 recognized species, genomic data remain scarce. Herein, we sequenced and characterized the mitogenome of Suillus collinitus (Fr.) Kuntze 1898. The circular mitogenome is 77,697 bp with low GC content (20.3%), encoding 14 standard protein-coding genes, 2 rRNA genes, 26 tRNA genes, and 6 non-conserved ORFs. Notably, 19 group I introns are identified in five genes. Phylogenetic analysis of mitochondrial proteins clearly places it in Suillaceae (suborder Suillineae, order Boletales), providing key molecular evidence for exploring evolutionary relationships among species in this fungal family.
Liu et al. (Mon,) studied this question.