Editing RNA virus (section)

==== Evolution ====

The evolution of the picornaviruses based on an analysis of their RNA polymerases and [[helicase]]s appears to date to the divergence of [[eukaryote]]s.<ref name=Koonin2008>{{cite journal | vauthors = Koonin EV, Wolf YI, Nagasaki K, Dolja VV | title = The Big Bang of picorna-like virus evolution antedates the radiation of eukaryotic supergroups | journal = Nature Reviews. Microbiology | volume = 6 | issue = 12 | pages = 925–39 | date = December 2008 | pmid = 18997823 | doi = 10.1038/nrmicro2030 | doi-access = free }}</ref> Their putative ancestors include the bacterial group II [[retroelement]]s, the family of HtrA [[protease]]s and DNA [[bacteriophage]]s.

Partitiviruses are related to and may have evolved from a totivirus ancestor.<ref name=Ghabrial1998>{{cite journal | vauthors = Ghabrial SA  | year = 1998 | title = Origin, adaptation and evolutionary pathways of fungal viruses | journal = Virus Genes | volume = 16 | issue = 1| pages = 119–31 | doi = 10.1023/a:1007966229595 | pmid = 9562896 | pmc = 7089520 }}</ref>

Hypoviruses and barnaviruses appear to share an ancestry with the potyvirus and sobemovirus lineages respectively.<ref name=Ghabrial1998/>