Seadornavirus | |
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Electron micrograph of Banna virus | |
Virus classification | |
(unranked): | Virus |
Realm: | Riboviria |
Kingdom: | Orthornavirae |
Phylum: | Duplornaviricota |
Class: | Resentoviricetes |
Order: | Reovirales |
Family: | Reoviridae |
Subfamily: | Sedoreovirinae |
Genus: | Seadornavirus |
Seadornavirus is a genus of viruses, in the family Reoviridae , in the subfamily Sedoreovirinae . Human, cattle, pig, and mosquitoes serve as natural hosts. [1] [2] There are three species in this genus: Banna virus (BAV), Kadipiro virus and Liao ning virus . Each of these viruses has been isolated from Aedes , Anopheles and Culex mosquito populations, but only BAV has been shown to cause infection in humans, in which the symptoms are similar to Japanese encephalitis—fever, malaise and encephalitis. [3] The word seadornavirus is an portmanteau, meaning Southeast Asian dodeca RNA virus.
The following three species are assigned to the genus: [2]
Viruses in Seadornavirus are non-enveloped, with icosahedral geometries, and T=13, T=2 symmetry. The diameter is around 60-70 nm. Genomes are linear and segmented. Segments range in length from 862 to 3747 base pairs, totaling 21 kb in length. The genome codes for 12 proteins. [1]
Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
---|---|---|---|---|---|
Seadornavirus | Icosahedral | T=13, T=2 | Non-enveloped | Linear | Segmented |
Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. The virus exits the host cell by monopartite non-tubule guided viral movement. Human, cattle, pig, mosquitoes (arthropod-borne), and mosquitoes serve as the natural host. Transmission routes are zoonosis and bite. [1]
Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
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Seadornavirus | Humans; cows; pigs; mosquitoes | None | Cell receptor endocytosis | Cell death | Cytoplasm | Cytoplasm | Zoonosis; arthropod bite |
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