Luteoviridae

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Luteoviridae
Virus classification e
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Kitrinoviricota
Class: Tolucaviricetes
Order: Tolivirales
Family: Luteoviridae
Genera

Luteoviridae is a family of viruses. Plants serve as natural hosts. There are currently 51 species in this family, divided among three genera, with seven unassigned species. Diseases associated with this family include: yellowing symptoms.[1][2]

Taxonomy[edit]

The following genera are recognized:

The following species are unassigned to a genus:

Structure[edit]

Viruses in Luteoviridae are non-enveloped, with icosahedral and Spherical geometries, and T=3 symmetry. The diameter is around 25-30 nm. Genomes are linear and non-segmented, around 5.3-5.7kb in length.[1] Luteoviruses can act as helper viruses for Umbraviruses, providing them with a coat protein.[2]

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Luteovirus Icosahedral T=3 Non-enveloped Linear Monopartite
Polerovirus Icosahedral T=3 Non-enveloped Linear Monopartite
Unassigned Head-Tail T=16 Non-enveloped Linear Monopartite
Enamovirus Icosahedral T=3 Non-enveloped Linear Monopartite

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. Positive stranded rna virus transcription is the method of transcription. Translation takes place by leaky scanning, -1 ribosomal frameshifting, and suppression of termination. The virus exits the host cell by tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (insects). Transmission routes are vector and mechanical.[1]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Luteovirus Plants Phloem Viral movement; mechanical inoculation Viral movement Cytoplasm Cytoplasm Mechanical inoculation: aphids
Polerovirus Plants Phloem Viral movement; mechanical inoculation Viral movement Cytoplasm Cytoplasm Mechanical inoculation: aphids
Unassigned Bacteria None Injection Lysis Cytoplasm Cytoplasm Passive diffusion
Enamovirus Plants Phloem Viral movement; mechanical inoculation Viral movement Cytoplasm Cytoplasm Mechanical inoculation: aphids

References[edit]

  1. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ^ a b ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.

External links[edit]