Fabavirus

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

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

Structure

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

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

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.

External Links

• Fabavirus on WikiMD