ICTV Report

Family: Pamosaviridae (Interim Report)

This is a summary page created by the ICTV Report Editors using information from associated Taxonomic Proposals and the Master Species List.

Edited by: Luisa Rubino
Posted: March 2025

Summary

The family Pamosaviridae includes ssRNA(+) satellite viruses of plants (Table 1 Pamosaviridae). The family Pamosaviridae was established in 2025 (Master Species List #40).

Table 1 Pamosaviridae. Characteristics of members of the family Pamosaviridae.

CharacteristicDescription
ExamplePanicum papanivirus 1 (M17182), species Papanivirus panici
VirionCapsids with T=1 symmetry (diameter 16 nm), constructed from 60 copies of capsid protein that has jelly-roll topology
GenomessRNA(+), 0.8 kb (Figure 1 Pamosaviridae)
ReplicationSatellite virus dependent on panicum mosaic virus (PMV), a member of the genus Panicovirus, family Tombusviridae
TranslationCap-independent translation initiation, non-canonical polyadenylation
Host rangePlants
TaxonomyRealm Riboviria, order Tombendovirales: 1 genus 1 species (Figure 2 Pamosaviridae)
Pamosaviridae genome
Figure 1 Pamosaviridae. Genome organisation of Panicum papanivirus 1, a member of the family Pamosaviridae. Boxes indicate open reading frames as annotated on GenBank accession M17182.
Pamosaviridae taxonomy
Figure 2 Pamosaviridae. Taxonomy of the family Pamosaviridae.

Derivation of names

Pamosaviridae: from Panicum mosaic virus and satellite

Papanivirus: from Panicovirus and Panicum