Abstract
The complete genome of a novel mycovirus, Colletotrichum curcumae narnavirus 1 (CcNV1), derived from the phytopathogenic fungus Colletotrichum curcumae strain 780-2T, was sequenced and analyzed. The full sequence of CcNV1 is 3,374 nucleotides in length and contains a single large open reading frame (ORF) encoding an RNA-dependent RNA polymerase (RdRp) of 1,087 amino acids with a molecular mass of 124.2 kDa that shares the closest similarity with that of Monilinia narnavirus H (53.02% identity). RdRp phylogeny analysis showed that CcNV1 is a new member of the proposed genus "Betanarnavirus" within the family Narnaviridae. This is the first report of a novel narnavirus infecting the phytopathogenic fungus C. curcumae, the causal agent of leaf blight of Curcuma wenyujin.
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Funding
This study was supported by the National Natural Science Foundation of China (no. 32260648), the Hainan Province Key R&D Project (no. ZDYF2022XDNY242), and the Scientific Research Foundation for Advanced Talents, Hainan University (no. KYQD(ZR)1873).
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Communicated by Ioly Kotta-Loizou.
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Yujia Fu and Tian Wang contributed equally to this work.
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Fu, Y., Wang, T., Zhou, S. et al. A novel narnavirus isolated from Colletotrichum curcumae strain 780-2T. Arch Virol 168, 226 (2023). https://doi.org/10.1007/s00705-023-05847-x
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DOI: https://doi.org/10.1007/s00705-023-05847-x