Mycoviruses

thumb|Virions of "Sclerotinia sclerotiorum negative-stranded RNA virus 1" (SsNSRV-1), a mycovirus of family "Mymonaviridae".

REDIRECT Narnavirus

Narnavirus is a genus of positive-strand RNA viruses in the family Narnaviridae. Fungi serve as natural hosts. There are two species in this genus. Member viruses have been shown to be required for sexual reproduction of Rhizopus microsporus ("Narnaviruses decrease asexual reproduction, but together with Mycetohabitans, are required for sexual reproductive success. This fungal–bacterial-viral system represents an outstanding model to investigate three-way microbial symbioses and their evolution."). Narnaviruses have a naked RNA genome without a virion and derive their name from this feature.

Mitoviruses are a family of positive-strand RNA viruses that constitute the family Mitoviridae. Fungi serve as natural hosts. There are four genera in the family.