Abbreviations : Report Help
The largest genus in the family contains viruses transmitted by aphids in a non-persistent manner.
Virions are flexuous filaments, 680–900 nm long and 11–13 nm wide, with helical symmetry and a pitch of about 3.4 nm. Particles of some viruses are longer in the presence of divalent cations than in the presence of EDTA.
Virion Sedimentation coefficient S20,w is 137–160S; density in CsCl is 1.31 g cm−3; Extinction coefficient E0.1%1 cm, 260 nm=2.4–2.7.
Virions contain a single molecule of linear, positive-sense ssRNA of about 9.7 kb; virions contain 5% RNA by weight.
Virions contain a single coat (capsid) protein (CP) of 30–47 kDa. The CP of most isolates of the type species, Potato virus Y, contains 267 aa.
The genome is organized as described in Figure 2.Potyviridae.
Virions are moderately immunogenic; there are serological relationships among many members. Some monoclonal antibodies react with most aphid-transmitted potyviruses. The CP aa sequence identity among aphid-transmitted viruses is 40–70%. Some viruses are serologically related to viruses in the genera Rymovirus and Bymovirus.
Many individual viruses have a narrow host range, but a few infect plant species in up to 30 host families. The viruses are transmitted by aphids in a non-persistent manner and are transmissible experimentally by mechanical inoculation. Some isolates are inefficiently transmitted by aphids and others are not transmissible by aphids at all. This is apparently due to mutations within the helper component and/or CP cistrons. Some viruses are seed-transmitted.
See discussion under family description.
Poty: from potato virus Y, an isolate of the type species Potato virus Y
Ammi majus latent virus
Anemone mosaic virus
Arisaema potyvirus 1
Arisaema potyvirus 2
Begonia flower breaking virus
Bermuda grass mosaic virus
Bermuda grass southern mosaic virus
Chickpea yellow mosaic virus
Clitoria chlorosis virus
Commelina mild mosaic virus
Cotyledon virus Y
Delphinium vein-clearing virus
Lily virus A
Melon vein-banding mosaic virus
Muscari mosaic virus
Omphalodes virus Y
Ornamental onion stripe mosaic virus
Ornithogalum necrotic mosaic virus
Ornithogalum virus 4
Passiflora foetida virus Y
Pecan mosaic-associated virus
potato virus B
Siratro 1 virus Y
Siratro 2 virus Y
Snowdrop virus Y
Stenomesson mosaic virus
Tricyrtis virus Y
Trillium crinkled leaf virus
Triteleia mosaic virus
Veltheimia mosaic virus
Veltheimia virus Y
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