Tungrovirus

Tungrovirus
Virus classification
Group: Group VII (dsDNA-RT)
Family: Caulimoviridae
Genus: Tungrovirus
Type Species
  • Rice tungro bacilliform virus

Tungrovirus is a genus of viruses, in the family Caulimoviridae. Monocots and family Poaceae serve as natural hosts. There is currently only one species in this genus: the type species Rice tungro bacilliform virus. Diseases associated with this genus include: stunting, yellow to orange leaf discoloration with fewer tillers.[1][2]

Taxonomy

Group: ssRNA-RT

[2]

Structure

Viruses in Tungrovirus are non-enveloped, with icosahedral and bacilliform geometries, and T=3 symmetry. Genomes are circular.[1]

Genus Structure Symmetry Capsid Genomic Arrangement Genomic Segmentation
TungrovirusBacilliformT=3Non-EnvelopedCircularMonopartite

Life Cycle

Viral replication is nuclear/cytoplasmic. Replication follows the dsDNA(RT) replication model. The method of transcription is dsDNA(RT) transcription. Translation takes place by leaky scanning, and ribosomal shunting. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. Monocots and family poaceae serve as the natural host. The virus is transmitted via a vector (aphid insects, leafhoppers, and nephotettix virenscens).[1]

Genus Host Details Tissue Tropism Entry Details Release Details Replication Site Assembly Site Transmission
TungrovirusPlantsNoneViral movement; mechanical inoculationViral movementNucleusCytoplasmMechanical inoculation: aphids

References

  1. 1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.

External Links

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