Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Wild potato
mosaic potyvirus
Index
Data collated by R.A.C. Jones and C.E. Fribourg,
1989.
Nomenclature
Synonyms
potato wild mosaic potyvirus.
Acronym
ICTV decimal code
Host range and symptoms
First reported
in Solanum chancayense; from Lachay in the Peruvian coastal desert.
Natural host range and symptoms
Symptoms persist.
- Solanum chancayense - severe leaf mosaic and deformation.
- Solanum muricatum (pepino) - chlorotic mosaic, rugosity and
enations.
Transmission
Transmitted by a vector; an insect; Myzus
persicae; Aphididae. Transmitted in a non-persistent manner. Virus
transmitted by mechanical inoculation; not transmitted by contact between
plants.
Ecology and control
Studies reported by Jones and
Fribourg (1979); Jones (1981).
Geographical distribution
Experimental host range
Few (<3) families susceptible.
Experimentally infected plants mostly show systemic mosaics, mottles, ringspots
or necrosis leaf deformation.
Diagnostically susceptible host
species and symptoms
- Nicotiana clevelandii - systemic
mosaic.
- Nicotiana bigelovii - blotchy systemic mosaic with
twisting and deformation of young leaves.
- Nicotiana occidentalis -
systemic vein clearing, mosaic and leaf curling.
- Nicotiana rustica
- chlorotic blotches with brown necrotic rings; occasional systemic chlorotic
leaf blotching.
- Solanum chancayense, S. mochiquense - systemic
mosaic and deformation.
Diagnostically insusceptible host species
Solanum tuberosum, Datura stramonium, Gomphrena globosa,
Chenopodium amaranticolor, Cucumis sativus.
Maintenance and
propagation hosts
Nicotiana clevelandii, N. bigelovii, N.
occidentalis, Solanum chancayense.
Assay hosts (Local lesions or Whole plants)
Nicotiana clevelandii (W) and N. bigelovii (W).
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Families containing
insusceptible hosts
Sources of host-range data
Jones
and Fribourg (1974); Jones et al. (1980).
Physical and
biochemical properties
Properties of particles in sap
TIP:
60-65 °C. LIV: 5-6 days. DEP: log10 minus 3-4. Leaf sap contains few virions.
Electron microscopy: neutral PTA stains virions well.
Purification method
Particle morphology
Virions filamentous; not enveloped;
usually flexuous; with a clear modal length; of 735 nm. Axial canal obscure.
Basic helix obscure.
Taxonomy and
relationships
Virus(es) with serologically related virions
Peru tomato, tobacco vein mottling, potato Y, potato A, potato V,
pepper veinal mottle, tobacco etch, henbane mosaic and Colombian datura viruses.
Differences between type strain and others
Isolates from pepino may be a distinct strain. They cause vein
clearing, mosaic, leaf deformation and stunting in Nicotiana glutinosa
whereas the type isolate fails to infect this species.
Additional
comments on relationships
Virions of wild potato
mosaic potyvirus were serologically most closely related to those of Peru tomato
virus, tobacco vein mottling virus, potato V virus and potato Y virus. The type
isolate of WPMV is readily distinguished from Peru tomato virus, potato V virus
and potato Y virus by its narrower host range, distinctive symptoms and, unlike
tobacco vein mottling virus, fails to infect Nicotiana clevelandii
(Fribourg and Nakashima, 1984; Jones and Fribourg, 1979; Jones and Fribourg,
1986).
Best tests for diagnosis
No
other viruses known in Solanum chancayense. Other filamentous viruses in
Solanum muricatum (pepino) can be distinguished by electron microscopy
and inoculation to Solanum tuberosum (potato), which wild potato mosaic
virus does not infect (Jones et al., 1980; Dolby and Jones, 1988).
Comments and
References
General comments
This virus was first
found in the `Lomas' vegetation of the Peruvian coastal desert, where, in the
winter, low lying clouds moisten the desert. Very few plant species survive in
this habitat, Solanum chancayense is one; it survives in summer as
underground tubers and some are infected with wild potato mosaic potyvirus.
Spread from plant to plant is by aphids. WPMV is also found in cultivated pepino
in irrigated coastal valleys, far from Lomas vegetation. There it is spread in
infected cuttings and from plant to plant by aphids.
References
- Dolby, C.A. and Jones, R.A.C. (1988).
Ann. appl. Biol. 112: 231.
- Fribourg, C.E. (1979).
Phytopathology 69: 441.
- Fribourg, C.E. and Nakashima, J.
(1984). Phytopathology 74: 1363.
- Jones, R.A.C. (1981). In:
Pests, Pathogens and Vegetation, p. 89; ed. J.M. Thresh. Pitman, London.
- Jones, R.A.C. and Fribourg, C.E. (1979). Phytopathology 69:
446.
- Jones, R.A.C. and Fribourg, C.E. (1986). CMI/AAB Descr. Pl.
Viruses No. 316, 4 pp.
- Jones, R.A.C., Koenig, R. and Lesemann, D.-E.
(1980). Ann. appl. Biol. 94: 61.
Cite this publication as:
Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.)
(1996 onwards).
`Plant Viruses Online: Descriptions and Lists from the VIDE Database.
Version: 20th August 1996.' URL
http://biology.anu.edu.au/Groups/MES/vide/
Dallwitz (1980)
and
Dallwitz, Paine and Zurcher (1993)
should also be cited.
Please send comments, corrections and suggestions to:
vide-manager@biology.anu.edu.au