ICTV Virus Taxonomy Profile: Secoviridae.

Jeremy R Thompson,Thierry Wetzel,René Van Der Vlugt,Marc Fuchs,Nobuyuki Yoshikawa,Ioannis Tzanetakis,Indranil Dasgupta,Toru Iwanami,Karel Petrzik,Alexander V Karasev,Hélène Sanfaçon

doi:10.1099/jgv.0.000779

Abstract

Members of the family Secoviridae are non-enveloped viruses with mono- or bipartite (RNA-1 and RNA-2) linear positive-sense ssRNA genomes with the size of the RNAs combined ranging from 9 to 13.7 kb. They are related to picornaviruses and are classified in the order Picornavirales. The majority of known members infect dicotyledonous plants and many are important plant pathogens (e.g. grapevine fanleaf virus and rice tungro spherical virus). This is a summary of the current International Committee on Taxonomy of Viruses (ICTV) report on the taxonomy of the family Secoviridae available at www.ictv.global/report/secoviridae.

Highlights

Members of the family Secoviridae are non-enveloped viruses with mono- or bipartite (RNA-1 and RNA-2) linear positivesense ssRNA genomes with the size of the RNAs combined ranging from 9 to 13.7 kb
Non-enveloped, 25–30 nm in diameter with icosahedral symmetry 9.0–13.7 kb of positive-sense, mono- or bipartite RNA In association with intracellular membranes derived from the endoplasmic reticulum Directly from genomic RNA as large polyproteins, which are cleaved by 3C-like proteinases Plants, transmitted mainly by insects or nematodes
In the case of viruses with a bipartite genome, the two RNAs are encapsidated in separate virions (Fig. 1) [1]

Summary

Introduction

Members of the family Secoviridae are non-enveloped viruses with mono- or bipartite (RNA-1 and RNA-2) linear positivesense ssRNA genomes with the size of the RNAs combined ranging from 9 to 13.7 kb. Typical member: cowpea mosaic virus (RNA-1: X00206; RNA-2: X00729), species Cowpea mosaic virus, genus Comovirus Virion Genome Replication Translation Host range Taxonomy Non-enveloped, 25–30 nm in diameter with icosahedral symmetry 9.0–13.7 kb of positive-sense, mono- or bipartite RNA In association with intracellular membranes derived from the endoplasmic reticulum Directly from genomic RNA as large polyproteins, which are cleaved by 3C-like proteinases Plants (mainly dicots), transmitted mainly by insects or nematodes.

Results

Conclusion