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  • Title: Characterization of a novel double-stranded RNA mycovirus conferring hypovirulence from the phytopathogenic fungus Botryosphaeria dothidea.
    Author: Zhai L, Xiang J, Zhang M, Fu M, Yang Z, Hong N, Wang G.
    Journal: Virology; 2016 Jun; 493():75-85. PubMed ID: 27015523.
    Abstract:
    A novel double-stranded RNA (dsRNA) virus, designated as Botryosphaeria dothidea RNA virus 1 (BdRV1), isolated from a hypovirulent strain YZN115 of Botryosphaeria dothidea was biologically and molecularly characterized. The genome of BdRV1 comprises of five dsRNAs. Each dsRNA contains a single open reading frame. The proteins encoded by dsRNA1-4 shared significant amino acid identities of 55%, 47%, 43% and 53% with the corresponding proteins of Aspergillus fumigatus tetramycovirus-1. DsRNA1, 3, and 4 of BdRV1 encoded an RNA-dependent RNA polymerase, a viral methyltransferase, and a P-A-S-rich protein, respectively. Function of proteins encoded by the dsRNA2 and dsRNA5 were unknown. BdRV1 conferred hypovirulence for its host and could be transmitted through conidia and hyphae contact.
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