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The first eleven mitochondrial genomes from the ectomycorrhizal fungal genus (Boletus) reveal intron loss and gene rearrangement.
- Source :
-
International journal of biological macromolecules [Int J Biol Macromol] 2021 Mar 01; Vol. 172, pp. 560-572. Date of Electronic Publication: 2021 Jan 19. - Publication Year :
- 2021
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Abstract
- In the present study, eleven novel complete mitogenomes of Boletus were assembled and compared. The eleven complete mitogenomes were all composed of circular DNA molecules, with sizes ranging from 32,883 bp to 48,298 bp. The mitochondrial gene arrangement of Boletus varied greatly from other Boletales mitogenomes, and gene position reversal were observed frequently in the evolution of Boletus. Across the 15 core protein-coding genes (PCGs) tested, atp9 had the least and rps3 had the largest genetic distances among the eleven Boletus species, indicating varied evolution rates of core PCGs. In addition, the Ka/Ks value for nad3 gene was >1, suggesting that this gene was subject to possible positive selection pressure. Comparative mitogenomic analysis indicated that the intronic region was significantly correlated with the size of mitogenomes in Boletales. Two large-scale intron loss events were detected in the evolution of Boletus. Phylogenetic analyses based on a combined mitochondrial gene dataset yielded a well-supported (BPP ≥ 0.99; BS =100) phylogenetic tree for 72 Agaricomycetes, and the Boletus species had a close relationship with Paxillus. This study served as the first report on complete mitogenomes in Boletus, which will further promote investigations of the genetics, evolution and phylogeny of the Boletus genus.<br />Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest.<br /> (Copyright © 2021. Published by Elsevier B.V.)
- Subjects :
- Amino Acid Sequence
Basidiomycota classification
Basidiomycota metabolism
Biological Evolution
Exons
Forests
Fungal Proteins classification
Fungal Proteins metabolism
Genome Size
Introns
Mitochondria metabolism
Mitochondrial Proteins classification
Mitochondrial Proteins metabolism
Mycorrhizae classification
Mycorrhizae metabolism
Phylogeny
Sequence Alignment
Sequence Homology, Amino Acid
Trees microbiology
Basidiomycota genetics
Fungal Proteins genetics
Genome, Mitochondrial
Mitochondria genetics
Mitochondrial Proteins genetics
Mycorrhizae genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1879-0003
- Volume :
- 172
- Database :
- MEDLINE
- Journal :
- International journal of biological macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 33476615
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2021.01.087