Characterization of the mitochondrial genome of the pathogenic fungus Scytalidium auriculariicola (Leotiomycetes) and insights into its phylogenetics
文献类型： 外文期刊
作者： Chen, Cheng 1 ; Li, Qiang 3 ; Fu, Rongtao 1 ; Wang, Jian 1 ; Xiong, Chuan 4 ; Fan, Zhonghan 1 ; Hu, Rongping 1 ; Zhang, H 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu 610066, Sichuan, Peoples R China
2.Minist Agr, Key Lab Integrated Pest Management Crops Southwes, Chengdu 610066, Sichuan, Peoples R China
3.Chengdu Univ, Coll Pharm & Biol Engn, Chengdu 610106, Sichuan, Peoples R China
4.Sichuan Acad Agr Sci, Biotechnol & Nucl Technol Res Inst, Chengdu 610061, Sichuan, Peoples R China
5.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： 2019 年 9 卷
页码：
收录情况： SCI
摘要： Scytalidium auriculariicola is the causative pathogen of slippery scar disease in the cultivated cloud ear fungus, Auricularia polytricha. In the present study, the mitogenome of S. auriculariicola was sequenced and assembled by next-generation sequencing technology. The circular mitogenome is 96,857 bp long and contains 56 protein-coding genes, 2 ribosomal RNA genes, and 30 transfer RNA genes (tRNAs). The high frequency of A and T used in codons contributed to the high AT content (73.70%) of the S. auriculariicola mitogenome. Comparative analysis indicated that the base composition and the number of introns and protein-coding genes in the S. auriculariicola mitogenome varied from that of other Leotiomycetes mitogenomes, including a uniquely positive AT skew. Five distinct groups were found in the gene arrangements of Leotiomycetes. Phylogenetic analyses based on combined gene datasets (15 protein-coding genes) yielded well-supported (BPP = 1) topologies. A single-gene phylogenetic tree indicated that the nad4 gene may be useful as a molecular marker to analyze the phylogenetic relationships of Leotiomycetes species. This study is the first report on the mitochondrial genome of the genus Scytalidium, and it will contribute to our understanding of the population genetics and evolution of S. auriculariicola and related species.
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