Abstract
The complete sequence of a novel mycovirus infecting Ustilaginoidea virens, the causal agent of false smut of rice, is reported here and designated as Ustilaginoidea virens unassigned RNA virus HNND-1 (UvURV-HNND-1). This virus has an undivided dsRNA genome of 2903 nt in length and contains two non-overlapping open reading frames (ORF1 and 2), with the small ORF1 encoding a protein of unknown function that showed sequence similarity to the comparable protein in virus Alternaria longipes dsRNA virus 1(AlRV1) and a larger ORF2 encoded the protein showing identities to the RNA-dependent RNA polymerases of AlRV1 and some other unassigned dsRNA viruses. Phylogenetic analysis showed that UvURV-HNND-1 is more closely related to unclassified viruses such as AlRV1 and distinct from distantly related members of the family Partitiviridae. Here, we propose in accordance with previous reports that UvURV-HNND-1 might belong to a new mycovirus genus together with AlRV1 and other similar viruses.
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Edited By Thomas Hohn.
Hong Jian Zhu and Dan Chen contributed equally to this work.
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Zhu, H.J., Chen, D., Zhong, J. et al. A novel mycovirus identified from the rice false smut fungus Ustilaginoidea virens . Virus Genes 51, 159–162 (2015). https://doi.org/10.1007/s11262-015-1212-y
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DOI: https://doi.org/10.1007/s11262-015-1212-y