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Abstract
Aspergillus niger is an important filamentous phytopathogenic fungus with a broad host range. A novel double-stranded (ds) RNA mycovirus, named Aspergillus niger victorivirus 1 (AnV1), isolated from A. niger strain baiyun3.23-4, was sequenced and analyzed. The AnV1 genome is 5317 nucleotides long with a GC content of 56%. AnV1 contains two open reading frames (ORF1 and 2), overlapping at a tetranucleotide sequence (AUGA). ORF1 encodes a putative capsid protein (CP) of 778 amino acids (aa), while ORF2 potentially encodes a putative RNA-dependent RNA polymerase (RdRp) of 826 aa. Phylogenetic analysis indicated that AnV1 is a new member of the genus Victorivirus in the family Totiviridae. As far as we know, this is the first report of the complete genome sequence of a victorivirus infecting A. niger.
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