Chromosome-level assembly of Dictyophora rubrovolvata genome using third-generation DNA sequencing and Hi-C analysis
文献类型： 外文期刊
作者： Ma, Lu 1 ; Yang, Chi 1 ; Xiao, Donglai 1 ; Liu, Xiaoyu 1 ; Jiang, Xiaoling 1 ; Lin, Hui 1 ; Ying, Zhenghe 1 ; Lin, Yanquan 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Edible Mushroom, Fuzhou 350012, Peoples R China
2.Fujian Acad Agr Sci, Natl & Local Joint Engn Res Ctr Breeding & Cultiva, Fuzhou 350012, Peoples R China
3.Fujian Acad Agr Sci, Inst Edible Mushroom, Fuzhou 350014, Peoples R China
关键词： Dictyophora rubrovolvata; whole-genome sequencing; functional annotation; lignocellulose degradation; CAZymes
期刊名称：G3-GENES GENOMES GENETICS （ 影响因子：2.6； 五年影响因子：3.0 ）
ISSN： 2160-1836
年卷期： 2023 年 13 卷 8 期
页码：
收录情况： SCI
摘要： Dictyophora rubrovolvata, a rare edible mushroom with both nutritional and medicinal values, was regarded as the "queen of the mushroom" for its attractive appearance. Dictyophora rubrovolvata has been widely cultivated in China in recent years, and many researchers were focusing on its nutrition, culture condition, and artificial cultivation. Due to a lack of genomic information, research on bioactive substances, cross breeding, lignocellulose degradation, and molecular biology is limited. In this study, we report a chromosome-level reference genome of D. rubrovolvata using the PacBio single-molecule real-time-sequencing technique and high-throughput chromosome conformation capture (Hi-C) technologies. A total of 1.83 Gb circular consensus sequencing reads representing similar to 983.34 coverage of the D. rubrovolvata genome were generated. The final genome was assembled into 136 contigs with a total length of 32.89 Mb. The scaffold and contig N50 length were 2.71 and 2.48 Mb, respectively. After chromosome-level scaffolding, 11 chromosomes with a total length of 28.24 Mb were constructed. Genome annotation further revealed that 9.86% of the genome was composed of repetitive sequences, and a total of 508 noncoding RNA (rRNA: 329, tRNA: 150, ncRNA: 29) were annotated. In addition, 9,725 protein-coding genes were predicted, among which 8,830 (90.79%) genes were predicted using homology or RNA-seq. Benchmarking Universal Single-Copy Orthologs results further revealed that there were 80.34% complete single-copy fungal orthologs. In this study, a total of 360 genes were annotated as belonging to the carbohydrate-active enzymes family. Further analysis also predicted 425 cytochromes P450 genes, which can be classified into 41 families. This highly accurate, chromosome-level reference genome of D. rubrovolvata will provide essential genomic information for understanding the molecular mechanism in its fruiting body formation during morphological development and facilitate the exploitation of medicinal compounds produced by this mushroom.
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