Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Vallota mosaic potyvirus

Index

• Nomenclature
• Host range, transmission and symptoms
• Physical and biochemical properties
• Taxonomy and relationships
• Comments and References

Data collated by A.A. Brunt and P. Jeyanandarajah, 1991.

Nomenclature

Acronym

ValMV

ICTV decimal code

57.0.1.T.090

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Vallota speciosa - chlorotic leaf striping and flower breaking.

Transmission

Transmitted by a vector; an insect; Myzus persicae; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation.

Geographical distribution

Spreads in the Netherlands. Found, but with no evidence of spread, in the U.K.

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show chlorotic local lesions.

Diagnostically susceptible host species and symptoms

• Vallota speciosa - chlorotic leaf striping.
• Chenopodium amaranticolor, C. quinoa, Hyoscyamus niger - chlorotic local lesions; not systemic.
• Tetragonia tetragonioides - chlorotic local lesions, green ringspots and/or green spots; not systemic.
• Gomphrena globosa - red-edged local lesions; not systemic.
• Freesia spp. - systemic mosaic.
• Nicotiana clevelandii, Spinacia oleracea - symptomless infection.

Diagnostically insusceptible host species

Datura stramonium, Nicotiana glutinosa, N. tabacum, Phaseolus vulgaris, Cucumis sativus.

Maintenance and propagation hosts

Vallota speciosa.

Assay hosts (Local lesions or Whole plants)

Chenopodium amaranticolor (L), C. quinoa (L), Hyoscyamus niger (L), Tetragonia tetragonioides (L).

Susceptible host species

• Chenopodium amaranticolor
• Chenopodium quinoa
• Freesia
• Gomphrena globosa
• Hyoscyamus niger
• Nicotiana clevelandii
• Spinacia oleracea
• Tetragonia tetragonioides
• Vallota speciosa

Insusceptible host species

• Beta vulgaris
• Cucumis sativus
• Cucurbita moschata
• Cucurbita pepo
• Datura stramonium
• Glycine max
• Lycopersicon esculentum
• Nicotiana glutinosa
• Nicotiana rustica
• Nicotiana tabacum
• Petunia × hybrida
• Phaseolus vulgaris
• Physalis floridana
• Pisum sativum
• Raphanus sativus
• Sesamum indicum
• Trifolium incarnatum
• Vicia faba
• Vigna unguiculata ssp. sesquipedalis
• Zinnia elegans

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Amaryllidaceae (1/1)
• Chenopodiaceae (3/4)
• Iridaceae (1/1)
• Solanaceae (2/9)
• Tetragoniaceae (1/1)

Families containing insusceptible hosts

• Chenopodiaceae (1/4)
• Compositae (1/1)
• Cruciferae (1/1)
• Cucurbitaceae (3/3)
• Leguminosae-Papilionoideae (6/6)
• Pedaliaceae (1/1)
• Solanaceae (7/9)

Sources of host-range data

Inouye and Hakkaart (1980).

Physical and biochemical properties

Properties of particles in sap

TIP: 60-65 °C. LIV: 4-8 days. DEP: log₁₀ minus 4-5. Leaf sap contains few virions.

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 750 nm; 13 nm wide. Axial canal obscure. Basic helix obscure.

Cytopathology

Virions found in leaves and mesophyll; in cytoplasm. Inclusions present in infected cells; are pinwheels; they do not contain virions.

Taxonomy and relationships

Potyvirus: Potyviridae

Comments and References

References

• Inouye, N. and Hakkaart, F.A. (1980). Neth. J. Pl. Path. 86: 265.

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: 20^th August 1996.' URL http://biology.anu.edu.au/Groups/MES/vide/

Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.