Potyviridae
Potyviridae | |
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Virus classification | |
Group: | Group IV ((+)ssRNA)
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Order: | Unassigned
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Family: | Potyviridae
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Genera | |
The Potyviridae are a family of viruses that encompasses more than 30% of known plant viruses,[1][2] many of which are of great agricultural significance. Currently, 190 species are placed in this family, divided among eight genera.[3][4]
Taxonomy
Based on the amino acid sequences of their coat proteins, potyviruses are now divided into eight genera. All but the Bymovirus genus are single-stranded particles.
Group: ssRNA(+)
- Family: Potyviridae
- Genus: Brambyvirus
- Genus: Potyvirus
- Algerian watermelon mosaic virus
- Alstroemeria mosaic virus
- Alternanthera mild mosaic virus
- Amaranthus leaf mottle virus
- Amazon lily mosaic virus
- Angelica virus Y
- Apium virus Y
- Araujia mosaic virus
- Arracacha mottle virus
- Artichoke latent virus
- Asparagus virus 1
- Banana bract mosaic virus
- Basella rugose mosaic virus
- Bean common mosaic necrosis virus
- Bean common mosaic virus
- Bean yellow mosaic virus
- Beet mosaic virus
- Bidens mosaic virus
- Bidens mottle virus
- Blue squill virus A
- Brugmansia mosaic virus
- Brugmansia suaveolens mottle virus
- Butterfly flower mosaic virus
- Calanthe mild mosaic virus
- Calla lily latent virus
- Canna yellow streak virus
- Carnation vein mottle virus
- Carrot thin leaf virus
- Carrot virus Y
- Celery mosaic virus
- Ceratobium mosaic virus
- Chilli ringspot virus
- Chilli veinal mottle virus
- Chinese artichoke mosaic virus
- Clitoria virus Y
- Clover yellow vein virus
- Cocksfoot streak virus
- Colombian datura virus
- Commelina mosaic virus
- Cowpea aphid-borne mosaic virus
- Cowpea green vein banding virus
- Cypripedium virus Y
- Cyrtanthus elatus virus A
- Daphne mosaic virus
- Dasheen mosaic virus
- Datura shoestring virus
- Diuris virus Y
- East Asian Passiflora virus
- Endive necrotic mosaic virus
- Euphorbia ringspot virus
- Freesia mosaic virus
- Fritillary virus Y
- Gloriosa stripe mosaic virus
- Groundnut eyespot virus
- Guinea grass mosaic virus
- Habenaria mosaic virus
- Hardenbergia mosaic virus
- Helenium virus Y
- Henbane mosaic virus
- Hibbertia virus Y
- Hippeastrum mosaic virus
- Hyacinth mosaic virus
- Iris fulva mosaic virus
- Iris mild mosaic virus
- Iris severe mosaic virus
- Japanese yam mosaic virus
- Johnsongrass mosaic virus
- Kalancho‰ mosaic virus
- Keunjorong mosaic virus
- Konjac mosaic virus
- Leek yellow stripe virus
- Lettuce mosaic virus
- Lily mottle virus
- Lupinus mosaic virus
- Lycoris mild mottle virus
- Maize dwarf mosaic virus
- Malva vein clearing virus
- Meadow saffron breaking virus
- Moroccan watermelon mosaic virus
- Narcissus degeneration virus
- Narcissus late season yellows virus
- Narcissus yellow stripe virus
- Nerine yellow stripe virus
- Nothoscordum mosaic virus
- Onion yellow dwarf virus
- Ornithogalum mosaic virus
- Ornithogalum virus 2
- Ornithogalum virus 3
- Panax virus Y
- Papaya leaf distortion mosaic virus
- Papaya ringspot virus
- Parsnip mosaic virus
- Passiflora chlorosis virus
- Passion fruit woodiness virus
- Pea seed-borne mosaic virus
- Peanut mottle virus
- Pennisetum mosaic virus
- Pepper mottle virus
- Pepper severe mosaic virus
- Pepper veinal mottle virus
- Pepper yellow mosaic virus
- Peru tomato mosaic virus
- Pfaffia mosaic virus
- Pleione virus Y
- Plum pox virus
- Pokeweed mosaic virus
- Potato virus A
- Potato virus V
- Potato virus Y
- Ranunculus leaf distortion virus
- Ranunculus mild mosaic virus
- Ranunculus mosaic virus
- Rhopalanthe virus Y
- Sarcochilus virus Y
- Scallion mosaic virus
- Shallot yellow stripe virus
- Sorghum mosaic virus
- Soybean mosaic virus
- Spiranthes mosaic virus 3
- Sugarcane mosaic virus
- Sunflower chlorotic mottle virus
- Sunflower mosaic virus
- Sweet potato feathery mottle virus
- Sweet potato latent virus
- Sweet potato mild speckling virus
- Sweet potato virus 2
- Sweet potato virus C
- Sweet potato virus G
- Telfairia mosaic virus
- Telosma mosaic virus
- Thunberg fritillary mosaic virus
- Tobacco etch virus
- Tobacco vein banding mosaic virus
- Tobacco vein mottling virus
- Tomato necrotic stunt virus
- Tradescantia mild mosaic virus
- Tropaeolum mosaic virus
- Tuberose mild mosaic virus
- Tuberose mild mottle virus
- Tulip breaking virus
- Tulip mosaic virus
- Turnip mosaic virus
- Twisted-stalk chlorotic streak virus
- Vallota mosaic virus
- Verbena virus Y
- Watermelon leaf mottle virus
- Watermelon mosaic virus
- Wild potato mosaic virus
- Wild tomato mosaic virus
- Wisteria vein mosaic virus
- Yam mild mosaic virus
- Yam mosaic virus
- Yambean mosaic virus
- Zantedeschia mild mosaic virus
- Zea mosaic virus
- Zucchini tigre mosaic virus
- Zucchini yellow fleck virus
- Zucchini yellow mosaic virus
- Genus: Unassigned
Potyvirus is the largest genus in the family, with more than 100 known species.[5] These viruses are 720-850 nm in length and are transmitted by aphids. They can also be easily transmitted by mechanical means.
The species in the genus Macluravirus are 650–675 nm in length and are also transmitted by aphids.
The plant viruses in the genus Ipomovirus are transmitted by whiteflies and they are 750–950 nm long.
Tritimovirus and the Rymovirus viruses are 680–750 nm long and are transmitted by eriophydid mites. (The rymoviruses are closely related to the potyviruses and may eventually be merged with the potyviruses.[6])
The Bymovirus genome consists of two particles instead of one (275 and 550 nm) and these viruses are transmitted by the chytrid fungus, Polymyxa graminis.
Structure
They are nonenveloped, flexuous filamentous, rod-shaped particles. The diameter is around 12-15 nm, with a length of 200-300 nm.[3]
Genomes are linear and not segmented, bipartite, around 85-12kb in length,[3] consisting of positive-sense RNA, which is surrounded by a protein coat made up of a single viral encoded protein called a capsid. All induce the formation of virus inclusion bodies called cylindrical inclusions (‘pinwheels’) in their hosts. These consist of a single protein (about 70 kDa) made in their hosts from a single viral genome product.
Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
---|---|---|---|---|---|
Potyvirus | Filamentous | Nonenveloped | Linear | Monopartite | |
Ipomovirus | Filamentous | Nonenveloped | Linear | Segmented | |
Brambyvirus | Filamentous | Nonenveloped | Linear | Monopartite | |
Tritimovirus | Filamentous | Nonenveloped | Linear | Segmented | |
Rymovirus | Filamentous | Nonenveloped | Linear | Segmented | |
Bymovirus | Filamentous | Nonenveloped | Linear | Segmented | |
Poacevirus | Filamentous | Nonenveloped | Linear | Monopartite | |
Macluravirus | Filamentous | Nonenveloped | Linear | Segmented |
Lifecycle
Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration. Replication follows the positive-stranded RNA virus replication model. Positive-stranded RNA virus transcription is the method of transcription. Translation takes place by -1 ribosomal frameshifting. The virus exits the host cell by tubule-guided viral movement.[3] Plants serve as the natural host. The virus is transmitted via a vector (insects). Transmission routes are vector and mechanical.[3]
Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
---|---|---|---|---|---|---|---|
Potyvirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: aphids |
Ipomovirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: white fly |
Brambyvirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: unknown vector |
Tritimovirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: mites |
Rymovirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: mites |
Bymovirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: fungus (Plasmodiophorales) |
Poacevirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: wheat curl mite |
Macluravirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: aphids |
References
- ^ Riechmann JL, Lain S, Garcia JA (1992) Highlights and prospects of potyvirus molecularbiology. J Gen Virol 73:1–16.
- ^ Berger PH, et al. (2005) in Virus Taxonomy: Eighth Report of the InternationalCommittee on the Taxonomy of Viruses, eds Fauquet CM, Mayo MA, Maniloff J,Desselberger U, Ball LA (Elsevier Academic, San Diego), pp 819–841.
- ^ a b c d e "Viral Zone". ExPASy. Retrieved 15 June 2015.
- ^ a b ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
- ^ Description of Plant Viruses: Potyviridae family
- ^ Description of Plant Viruses: Potyviridae family Figure