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Published on: July 18, 2025
Identification and sequence determination of a new chrysovirus infecting the entomopathogenic fungus Isaria javanica
1Laboratory of Entomopathogenic Nematodes, Institute of Entomology, Biology Centre, The Czech Academy of Sciences, Branišovská 31/1160, 37005, Ceske Budejovice, Czech Republic. noemihas@gmail.com.
Abstract:
A new double-stranded RNA (dsRNA) mycovirus has been identified in the isolate NB IFR-19 of the entomopathogenic fungus Isaria javanica. Isaria javanica chrysovirus-1 (IjCV-1) constitutes a new member of the Chrysoviridae family, and its genome is made up of four dsRNA elements designated dsRNA1, 2, 3 and 4 from largest to smallest. dsRNA1 and dsRNA2 encode an RNA-dependent RNA polymerase (RdRp) and a coat protein (CP), respectively. dsRNA3 and 4 encode hypothetical proteins of unknown function. IjCV-1 constitutes the first report of a chrysovirus infecting the entomopathogenic fungus Isaria javanica.
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