Abstract
Members of the family Fimoviridae, order Bunyavirales are plant viruses with segmented, linear, single-stranded, negative-sense RNA genomes. They are distantly related to orthotospoviruses and orthobunyaviruses of the families Tospoviridae and Peribunyaviridae, respectively. The family Fimoviridae includes the genus Emaravirus, which comprises several species with European mountain ash ringspot-associated emaravirus as the type species. Fimoviruses are transmitted to plants by eriophyid mite vectors and induce similar characteristic cytopathologies in their host plants, including the presence of double membrane-bound bodies in the cytoplasm of the virus-infected cells. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the taxonomy of the Fimoviridae, which is available at www.ictv.global/report/fimoviridae.
Highlights
Members of the family Fimoviridae, order Bunyavirales are plant viruses with segmented, linear, single-stranded, negativesense RNA genomes
In order from RNA1 to RNA4, the encoded proteins are: the RNA-dependent RNA polymerase (p1, 264–269 kDa, 226.9 kDa in Actinidia chlorotic ringspot-associated virus), a glycoprotein precursor (p2, 73– 76.6 kDa) that is predicted to be cleaved into products of 21.5–25.0 and 51–52 kDa, the nucleocapsid protein (p3, 32– 35.6 kDa) and a putative movement protein (p4, ca. 40.5– 43.6 kDa)
Phylogenetic trees constructed with fimovirus RNA-dependent RNA polymerase, glycoprotein precursor and nucleocapsid protein sequences display two main clusters [7, 8]
Summary
Members of the family Fimoviridae, order Bunyavirales are plant viruses with segmented, linear, single-stranded, negativesense RNA genomes. Typical member: European mountain ash ringspot-associated virus, Hamburg (RNA1: AY563040; RNA2: AY563041; RNA3: DQ831831; RNA4: DQ831828), species European mountain ash ringspot-associated emaravirus, genus Emaravirus, family Fimoviridae, order Bunyavirales
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