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Abstract <p>We found a double-stranded RNA (dsRNA) mycovirus from <i>Aspergillus</i> niger strain TR-5, which we named Aspergillus niger chrysovirus 1 (AnCV1). The genome of AnCV1 was found to contain four dsRNA segments (dsRNA1-4 from largest to smallest) with lengths of 3,658 bp, 2,132 bp, 2,618 bp, and 2.533 bp. Sequence analysis showed that the viral RdRp (RNA-dependent RNA polymerase) was encoded by dsRNA1, the viral CP (coat protein) was encoded by dsRNA3, and both dsRNA2 and dsRNA4 contained ORFs (open reading frames) encoding hypothetical proteins. Phylogenetic analysis showed that AnCV1 is a new member of the genus <i>Betachrysovirus</i> in the family <i>Chrysoviridae</i>. This is the first report of the complete genome sequence of a chrysovirus infecting <i>A. niger</i>.</p>

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Genome characterization of a novel chrysovirus infecting Aspergillus Niger

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Li Wang,
  • Futao Huang,
  • Jia Mi,
  • Changfeng Long,
  • Yelin Xu,
  • Xiaolan Qi,
  • Yanping Jiang,
  • Tom Hsiang,
  • Yinhui Jiang

摘要

Abstract

We found a double-stranded RNA (dsRNA) mycovirus from Aspergillus niger strain TR-5, which we named Aspergillus niger chrysovirus 1 (AnCV1). The genome of AnCV1 was found to contain four dsRNA segments (dsRNA1-4 from largest to smallest) with lengths of 3,658 bp, 2,132 bp, 2,618 bp, and 2.533 bp. Sequence analysis showed that the viral RdRp (RNA-dependent RNA polymerase) was encoded by dsRNA1, the viral CP (coat protein) was encoded by dsRNA3, and both dsRNA2 and dsRNA4 contained ORFs (open reading frames) encoding hypothetical proteins. Phylogenetic analysis showed that AnCV1 is a new member of the genus Betachrysovirus in the family Chrysoviridae. This is the first report of the complete genome sequence of a chrysovirus infecting A. niger.