Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Desmodium mosaic potyvirus

Index

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

Data collated by J.R. Edwardson, 1981.

Nomenclature

Acronym

DesMV

ICTV decimal code

57.0.1.T.029

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Desmodium canum - mosaic, leaf malformation.

Transmission

Transmitted by a vector; an insect; Aphis craccivora, Myzus persicae; Aphididae. Virus transmitted by mechanical inoculation; transmitted by seed (8%).

Geographical distribution

Spreads in the USA.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Cyamopsis tetragonoloba - faint systemic mosaic.
• Desmodium canum - systemic mosaic, leaf shape malformation.
• Nicotiana benthamiana - systemic vein clearing.

Diagnostically insusceptible host species

Gomphrena globosa, Chenopodium amaranticolor, Cucumis sativus, Cassia tora, Phaseolus vulgaris, Datura stramonium, Nicotiana clevelandii.

Maintenance and propagation hosts

Desmodium canum.

Assay hosts (Local lesions or Whole plants)

Cyamopsis tetragonoloba (W), Desmodium canum (W), Nicotiana benthamiana (W).

Susceptible host species

• Cyamopsis tetragonoloba
• Desmodium canum
• Nicotiana benthamiana

Insusceptible host species

• Apium graveolens
• Capsicum annuum
• Cassia tora
• Chenopodium amaranticolor
• Cucumis sativus
• Cucurbita maxima
• Cucurbita pepo
• Datura stramonium
• Gomphrena globosa
• Nicotiana clevelandii
• Nicotiana tabacum
• Phaseolus vulgaris
• Pisum sativum
• Vicia faba
• Vigna unguiculata

Families containing susceptible hosts

• Leguminosae-Papilionoideae (2/6)
• Solanaceae (1/5)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (1/1)
• Cucurbitaceae (3/3)
• Leguminosae-Caesalpinioideae (1/1)
• Leguminosae-Papilionoideae (4/6)
• Solanaceae (4/5)
• Umbelliferae (1/1)

Sources of host-range data

Edwardson et al. (1970); Edwardson (1974b).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions.

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 775 nm. Axial canal obscure. Basic helix obscure.

Biochemical properties

Genome consists of RNA; single-stranded.

Cytopathology

Virions found in mesophyll and epidermis. Inclusions present in infected cells; are pinwheels (with scrolls attached); they do not contain virions.

Taxonomy and relationships

Potyvirus: Potyviridae

Comments and References

References

• Edwardson, J.R. (1974a). Fla Agric. Exp. Stn Monog. No. 4, p. 398.
• Edwardson, J.R. (1974b). Fla Agric. Exp. Stn Monog. No. 5, p. 48.
• Edwardson, J.R., Purcifull, D.E., Zettler, F.W., Christie, R.G. and Christie, S.R. (1970). Pl. Dis. Reptr 54: 161.

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.