Comparative mitochondrial genome analysis reveals intron dynamics and gene rearrangements in two Trametes species
文献类型: 外文期刊
作者: Chen, Cheng 1 ; Li, Qiang 2 ; Fu, Rongtao 1 ; Wang, Jian 1 ; Deng, Guangmin 3 ; Chen, Xiaojuan 1 ; Lu, Daihua 1 ;
作者机构: 1.Minist Agr, Key Lab Integrated Pest Management Crops Southwes, Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu, Peoples R China
2.Chengdu Univ, Sch Food & Biol Engn, Minist Agr & Rural Affairs, Key Lab Coarse Cereal Proc, Chengdu, Peoples R China
3.Sichuan Acad Agr Sci, 20 Jingjusi Rd, Chengdu 610066, Sichuan, Peoples R China
期刊名称:SCIENTIFIC REPORTS ( 影响因子:4.379; 五年影响因子:5.133 )
ISSN: 2045-2322
年卷期: 2021 年 11 卷 1 期
页码:
收录情况: SCI
摘要: Trametes species are efficient wood decomposers that are widespread throughout the world. Mitogenomes have been widely used to understand the phylogeny and evolution of fungi. Up to now, two mitogenomes from the Trametes genus have been revealed. In the present study, the complete mitogenomes of two novel Trametes species, Trametes versicolor and T. coccinea, were assembled and compared with other Polyporales mitogenomes. Both species contained circular DNA molecules, with sizes of 67,318 bp and 99,976 bp, respectively. Comparative mitogenomic analysis indicated that the gene number, length and base composition varied between the four Trametes mitogenomes we tested. In addition, all of the core protein coding genes in Trametes species were identified and subjected to purifying selection. The mitogenome of T. coccinea contained the largest number of introns among the four Trametes species tested, and introns were considered the main factors contributing to size variations of Polyporales. Several novel introns were detected in the Trametes species we assembled, and introns identified in Polyporales were found to undergo frequent loss/gain events. Large-scale gene rearrangements were detected between closely related Trametes species, including gene inversions, insertions, and migrations. A well-supported phylogenetic tree for 77 Basidiomycetes was obtained based on the combined mitochondrial gene set using 2 phylogenetic inference methods. The results showed that mitochondrial genes are effective molecular markers for understanding the phylogeny of Basidiomycetes. This study is the first to report the mitogenome rearrangement and intron dynamics of Trametes species, which shed light on the evolution of Trametes and other related species.
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