Abstract:
:Cantharellus is a large ectomycorrhizal genus. Here, we assembled and annotated the mitochondrial genomes of C. lutescens, C. appalachiensis, and two specimens of C. cibarius. We found that all four mitochondrial genomes were circular and between 56,786 bp and 80,736 bp, long. The length and GC content of the protein-coding genes (PCGs) in the four mitogenomes varied. All tRNAs were folded into classical cloverleaf secondary structures; 16 of the 26 identified tRNAs contained variable sites across Cantharellus genus. C. appalachiensis was found containing the most repeated sequences (11.32% of the mitogenome), along with a substantial number of gene rearrangements. Comparative analysis of three C. cibarius specimens indicated that the mitogenomes of specimens from different regions differed. The Ka/Ks ratios of all 15 PCGs identified across all four mitogenomes were <1, indicating that these genes have been subject to purifying selection. Phylogenetic analysis recovered a well-supported tree based on a combined analysis of the 15 PCGs. In addition, we identified cob, cox1, and rnl as potential single-gene markers for the analysis of phylogenetic relationships among Agaricomycetes species. The mitogenomes reported in this study will facilitate the study of population genetics and evolution in Cantharellus and other closely related species.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Li Q,Liao M,Yang M,Xiong C,Jin X,Chen Z,Huang Wdoi
10.1016/j.ijbiomac.2018.06.129subject
Has Abstractpub_date
2018-10-15 00:00:00pages
756-769issue
Pt Aeissn
0141-8130issn
1879-0003pii
S0141-8130(18)31813-0journal_volume
118pub_type
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