Determination and Structural Analysis of the Whole-Genome Sequence of Fusarium equiseti D25-1

生物 基因组 遗传学 基因 镰刀菌 玉米赤霉烯酮 全基因组测序 GC含量 内含子 基因组大小 计算生物学
作者
Xueping Li,Jianhong Li,Qi Yonghong,Liu Yonggang,Minquan Li
出处
期刊:Research Square - Research Square 被引量:1
标识
DOI:10.21203/rs.2.24663/v1
摘要

Abstract Background Fusarium equiseti is a plant pathogen with a wide range of hosts and diverse effects, including probiotic activity. However, the underlying molecular mechanisms remain unclear, hindering its effective control and utilization. In this study, the Illumina HiSeq 4000 and PacBio platforms were used to sequence and assemble the whole genome of Fusarium equiseti D25-1. Results The assembly included 16 fragments with a GC content of 48.01%, gap number of zero, and size of 40,776,005 bp. There were 40,110 exons and 26,281 introns having a total size of 19,787,286 bp and 2,290,434 bp, respectively. The genome had an average copy number of 333, 71, 69, 31, and 108 for tRNAs, rRNAs, sRNAs, snRNAs, and miRNAs, respectively. The total repetitive sequence length was 1,713,918 bp, accounting for 4.2033% of the genome. In total, 13,134 functional genes were annotated, accounting for 94.97% of the total gene number. Toxin-related genes, including two related to zearalenone and 23 related to trichothecene, were identified. A comparative genomic analysis supported the high quality of the F. equiseti assembly, exhibiting good collinearity with the reference strains, 3,483 species-specific genes, and 1,805 core genes. A gene family analysis revealed more than 2,500 single-copy orthologs. F. equiseti was most closely related to Fusarium pseudograminearum based on a phylogenetic analysis at the whole-genome level. Conclusions Our comprehensive analysis of the whole genome of F. equiseti provides basic data for studies of gene expression, regulatory and functional mechanisms, evolutionary processes, as well as disease prevention and control.
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