Abstract

Here, we describe the full-length genome sequence of a novel ourmia-like mycovirus, tentatively named "Botryosphaeria dothidea ourmia-like virus 1" (BdOLV1), isolated from the phytopathogenic fungus Botryosphaeria dothidea strain 8A, associated with apple ring rot in Shanxi province, China. The complete BdOLV1 genome is comprised of a 2797-nucleotide positive-sense (+) single-stranded RNA (ssRNA) with a single open reading frame (ORF). The ORF putatively encodes a 642-amino-acid polypeptide with conserved RNA-dependent RNA polymerase (RdRp) motifs related to those of viruses of the family Botourmiaviridae. Phylogenetic analysis based on RdRp amino acid sequences showed that BdOLV1 is grouped with unclassified oomycete-infecting viruses closely related to members of the genus Botoulivirus in the family Botourmiaviridae. This is the first report of a novel (+)ssRNA virus in B. dothidea related to members of the genus Botoulivirus in the family Botourmiaviridae.

Highlights

  • Botryosphaeria dothidea is a notorious canker pathogen that infects a wide range of trees worldwide [1]

  • We describe the full-length genome sequence of a novel ourmia-like mycovirus, tentatively designated Botryosphaeria dothidea ourmia-like virus 1 (BdOLV1), isolated from the phytopathogenic fungus, Botryosphaeria dothidea strain P8, associated with apple ring rot in Shanxi province, China

  • Phylogenetic analysis based on the RNA-dependent RNA polymerase (RdRp) amino acid sequences showed that BdOLV1 is grouped with oomycete-infecting unclassified viruses closely related to the genus Botoulivirus in Botourmiaviridae

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Summary

Introduction

Botryosphaeria dothidea is a notorious canker pathogen that infects a wide range of trees worldwide [1]. We describe the full-length genome sequence of a novel ourmia-like mycovirus, tentatively designated Botryosphaeria dothidea ourmia-like virus 1 (BdOLV1), isolated from the phytopathogenic fungus, Botryosphaeria dothidea strain P8, associated with apple ring rot in Shanxi province, China. The ORF putatively encodes a 642-amino acid polypeptide with conserved RNA-dependent RNA polymerase (RdRp) motifs, related to viruses of the family Botourmiaviridae.

Results
Conclusion
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