Fabavirus: Difference between revisions

Latest revision as of 17:34, 30 December 2024

Fabavirus is a genus of viruses in the family Secoviridae, order Picornavirales. Plants serve as natural hosts. There are currently six species in this genus, including the type species Broad bean wilt virus 1.

Taxonomy[edit]

The genus Fabavirus is part of the family Secoviridae, which is within the order Picornavirales. The genus contains the following species:

Structure[edit]

Viruses in Fabavirus are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 25-30 nm. Genomes are linear and segmented, around 9.3kb in length.

Life Cycle[edit]

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. The virus exits the host cell by tubule-guided viral movement.

Host and Transmission[edit]

The natural hosts for Fabavirus are plants. Transmission routes are primarily vector-borne, with aphids being the main vectors.

Symptoms[edit]

Infected plants may exhibit symptoms such as mosaic patterns on leaves, chlorosis, and necrosis. These symptoms can lead to reduced photosynthesis and crop yield.

Control and Management[edit]

Management of Fabavirus infections involves controlling the aphid vectors, using resistant plant varieties, and implementing crop rotation and sanitation measures to reduce the spread of the virus.

References[edit]

External Links[edit]

Fabavirus on WikiMD

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-'''Fabavirus''' is a genus of viruses in the family [[Secoviridae]], which is part of the order [[Picornavirales]]. Viruses within this genus are known to infect a wide range of host plants, causing various diseases that can significantly impact agricultural productivity. The name ''Fabavirus'' is derived from the type species of the genus, ''[[Broad bean wilt virus 1]]'' (BBWV-1), which primarily affects plants in the family [[Fabaceae]], commonly known as legumes or pulses.
-==Characteristics==
+{{Infobox virus
-Fabaviruses are characterized by their bipartite, positive-sense, single-stranded RNA genomes. Each particle is encapsulated within an icosahedral capsid, which is not enveloped, measuring approximately 25-30 nm in diameter. The genome is divided into two segments, RNA1 and RNA2, each of which is separately encapsulated. These segments encode for the replication machinery and the structural proteins of the virus, respectively.
+| name = Fabavirus
+| virus_group = [[Group IV]]
+| ordo = [[Picornavirales]]
+| familia = [[Secoviridae]]
+| genus = '''Fabavirus'''
+}}
-==Genome Structure and Replication==
+'''Fabavirus''' is a genus of [[viruses]] in the family [[Secoviridae]], order [[Picornavirales]]. [[Plants]] serve as natural hosts. There are currently six species in this genus, including the type species [[Broad bean wilt virus 1]].
-The RNA1 segment of the fabavirus genome encodes for a large polyprotein that is post-translationally processed into the viral replicase and other non-structural proteins necessary for virus replication. RNA2, on the other hand, encodes for the structural proteins that make up the virus capsid. Replication of fabaviruses occurs in the cytoplasm of infected cells, where the viral RNA is used as a template for the synthesis of a complementary negative strand. This negative strand then serves as a template for the production of new positive-strand genomic RNA, as well as subgenomic RNAs that are used for the translation of viral proteins.
-==Host Range and Transmission==
+== Taxonomy ==
-Fabaviruses have a broad host range, infecting various species within the families [[Fabaceae]], [[Solanaceae]], and others. Transmission of fabaviruses occurs primarily through aphids in a non-persistent manner. This means that the virus does not replicate within the aphid vector, and the aphid can only transmit the virus for a short period after acquiring it from an infected plant. Some fabaviruses can also be transmitted through seed, which can contribute to the spread of the virus across long distances.
+The genus Fabavirus is part of the family [[Secoviridae]], which is within the order [[Picornavirales]]. The genus contains the following species:
+* [[Broad bean wilt virus 1]]
+* [[Broad bean wilt virus 2]]
+* [[Gentian mosaic virus]]
+* [[Lamium mild mosaic virus]]
+* [[Subterranean clover mottle virus]]
+* [[Turnip ringspot virus]]
-==Economic Impact==
+== Structure ==
-The economic impact of fabaviruses can be significant, particularly in crops of high economic value such as beans, peas, and lentils. Infection can lead to a range of symptoms including leaf mottling, yellowing, and wilting, which can result in reduced yield and quality of the harvested product. Management of fabavirus infections relies on the use of resistant plant varieties, control of aphid vectors, and the implementation of good agricultural practices to prevent the spread of the virus.
+Viruses in Fabavirus are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 25-30 nm. Genomes are linear and segmented, around 9.3kb in length.
-==Notable Species==
+== Life Cycle ==
-Some notable species within the ''Fabavirus'' genus include:
+[[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. The virus exits the host cell by [[tubule-guided viral movement]].
-* ''[[Broad bean wilt virus 1]]'' (BBWV-1)
-* ''[[Broad bean wilt virus 2]]'' (BBWV-2)
-* ''[[Lamium mild mosaic virus]]''
-* ''[[Pea necrotic yellow dwarf virus]]''
-==Research and Control==
+== Host and Transmission ==
-Research on fabaviruses focuses on understanding their molecular biology, host interactions, and mechanisms of disease in order to develop effective control strategies. This includes the development of resistant plant varieties through traditional breeding or genetic engineering, as well as the study of natural resistance mechanisms in plants. Integrated pest management strategies are also important for controlling the aphid vectors of fabaviruses.
+The natural hosts for Fabavirus are [[plants]]. Transmission routes are primarily [[vector]]-borne, with [[aphids]] being the main vectors.
+== Symptoms ==
+Infected plants may exhibit symptoms such as [[mosaic]] patterns on leaves, [[chlorosis]], and [[necrosis]]. These symptoms can lead to reduced [[photosynthesis]] and [[crop yield]].
+== Control and Management ==
+Management of Fabavirus infections involves controlling the aphid vectors, using resistant plant varieties, and implementing [[crop rotation]] and [[sanitation]] measures to reduce the spread of the virus.
+== References ==
+{{Reflist}}
+== External Links ==
+* [https://www.wikimd.com/wiki/Fabavirus Fabavirus on WikiMD]
-[[Category:Virus genera]]
 [[Category:Secoviridae]]
+[[Category:Plant viruses]]
-{{Secoviridae-stub}}
+[[Category:Viral plant pathogens and diseases]]