{{Short description|Genus of viruses}} {{Use dmy dates|date=April 2017}} {{virusbox | taxon = Fabavirus }}

'''''Fabavirus''''' is a genus of plant viruses (plant pathogens) in the order ''Picornavirales'', in the family ''Secoviridae'', in the subfamily ''Comovirinae''. Plants serve as natural hosts. There are 18 species in this genus.<ref name=ViralZone>{{cite web |title=Viral Zone |url=http://viralzone.expasy.org/all_by_species/299.html |publisher=ExPASy |accessdate=15 June 2015}}</ref><ref name=ICTV>{{cite web |title=Virus Taxonomy: 2025 Release |url=https://ictv.global/taxonomy |publisher=International Committee on Taxonomy of Viruses |access-date=22 March 2026}}</ref><ref name=Lisa1996>{{cite book |author1=V. Lisa |author2=G. Boccardo |editor1-last=Murant |editor1-first=A.F. |editor2-last=Harrison |editor2-first=B.D. |title=The Plant Viruses Polyhedral Virions and Bipartite RNA Genomes |date=1996 |publisher=Springer US |location=Boston, MA |isbn=978-1-4899-1772-0 |pages=229–250 |chapter=Fabaviruses |ref={{harvid|Lisa|1996}} |doi=10.1007/978-1-4899-1772-0_9}}</ref>

==Taxonomy== The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:<ref name=ICTV /><ref>{{cite web |title=Species List: ''Secoviridae'' |url=https://ictv.global/report/chapter/secoviridae/taxonomy/secoviridae |publisher=International Committee on Taxonomy of Viruses |access-date=22 March 2026}}</ref>

{{div col}} * ''Fabavirus alphaviciae'', Broad bean wilt virus 1 * ''Fabavirus avii'', Cherry virus F * ''Fabavirus betaviciae'', Broad bean wilt virus 2 * ''Fabavirus betavitis'', Grapevine secovirus * ''Fabavirus camphorae'', Camphor tree fabavirus * ''Fabavirus cirsii'', Cirsium virus A * ''Fabavirus cucurbitaceae'', Cucurbit mild mosaic virus * ''Fabavirus gentianae'', Gentian mosaic virus * ''Fabavirus gynostemmae'', Gynostemma pentaphyllum secovirus * ''Fabavirus lamii'', Lamium mild mosaic virus * ''Fabavirus multiflorum'', Many-flowered stoneseed fabavirus * ''Fabavirus persicae'', Peach leaf pitting-associated virus A * ''Fabavirus phipiperis'', Black pepper virus F * ''Fabavirus pruni'', Prunus virus F * ''Fabavirus reaumuriae'', Reaumuria songarica fabavirus * ''Fabavirus squamellariae'', Squamellaria imberbis fabavirus * ''Fabavirus vitis'', Grapevine fabavirus * ''Fabavirus yuccae'', Yucca gloriosa secovirus {{div col end}}

==Structure== Viruses in ''Fabavirus'' are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 28-30&nbsp;nm. Genomes are linear and segmented, bipartite, around 23.4kb in length.<ref name=ViralZone />

{| class="wikitable sortable" style="text-align:center" |- ! Genus !! Structure || Symmetry !! Capsid !! Genomic arrangement !! Genomic segmentation |- |''Fabavirus''||Icosahedral||Pseudo T=3||Non-enveloped||Linear||Segmented |}

==Life cycle== Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (aphid). Transmission routes are vector and mechanical.<ref name=ViralZone />

{| class="wikitable sortable" style="text-align:center" |- ! Genus !! Host details !! Tissue tropism !! Entry details !! Release details !! Replication site !! Assembly site !! Transmission |- |''Fabavirus''||Plants||None||Viral movement; mechanical inoculation||Viral movement||Cytoplasm||Cytoplasm||Mechanical inoculation: aphids |}

== History == Proposed in 1987, as the ''Fabavirus'' group, it was originally unassigned but given genus status in 1993 as a member of the ''Comoviridae'', of the ''Picornavirales'' in 2008, and reached its current taxonomic status in 2009. There are seven species.<ref>[http://ictvonline.org/taxonomyHistory.asp?taxnode_id=20130712&taxa_name=Fabavirus ICTV Virus Taxonomy: 2013 Release. Fabavirus]</ref> The genus is named after the broad bean (''Vicia faba'').<ref name=Lisa1996/>

== See also == *{{cite book |editor1-last=King |editor1-first=Andrew M. Q. |title=Virus taxonomy : classification and nomenclature of viruses : ninth report of the International Committee on Taxonomy of Viruses |date=2012 |publisher=Academic Press |location=London |isbn=978-0123846846 |page=926 |url=https://books.google.com/books?id=KXRCYay3pH4C |accessdate=9 December 2014 |display-editors=etal}}

== References == {{Reflist}}

==External links== * [http://viralzone.expasy.org/all_by_species/299.html Viralzone: Fabavirus] * [http://ictvonline.org/virusTaxonomy.asp ICTV] {{Baltimore classification}}

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Fabaviruses Category:Viral plant pathogens and diseases Category:Ornamental plant pathogens and diseases Category:Comovirinae