Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Cowpea rugose mosaic potyvirus

Index

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

Data collated by E.W. Kitajima, 1991.

Nomenclature

Acronym

CPRMV

ICTV decimal code

57.0.1.T.020

Host range and symptoms

Natural host range and symptoms

Symptoms persist. Symptoms rugose mosaic.
• Vigna unguiculata ssp. unguiculata.

Transmission

Transmitted by a vector (probably); an insect; Myzus persicae, Aphis neri; Aphididae. Not transmitted by Aphis coreopsidis, A. citricola, Dactynotus sp. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation; not transmitted by seed.

Geographical distribution

Spreads in Brazil (Praui).

Experimental host range

Several (3-9) families susceptible.

Diagnostically susceptible host species and symptoms

• Vigna unguiculata, Phaseolus vulgaris, Pisum sativum, Chenopodium amaranticolor, C. quinoa, C. murale, Gomphrena globosa, Centrosema sp.

Diagnostically insusceptible host species

Glycine max, Crotalaria paulina, Nicotiana tabacum, Sonchus oleraceus, Zea mays.

Maintenance and propagation hosts

Vigna unguiculata ssp. unguiculata, Phaseolus vulgaris.

Assay hosts (Local lesions or Whole plants)

Chenopodium quinoa (L), Vigna unguiculata ssp. unguiculata (W).

Susceptible host species

• Centrosema
• Chenopodium amaranticolor
• Chenopodium murale
• Chenopodium quinoa
• Gomphrena globosa
• Phaseolus vulgaris
• Pisum sativum
• Vigna unguiculata
• Vigna unguiculata ssp. unguiculata

Insusceptible host species

• Cassia obtusifolia
• Cichorium endiva
• Crotalaria paulina
• Datura stramonium
• Glycine max
• Lactuca sativa
• Lycopersicon esculentum
• Nicandra physalodes
• Nicotiana rustica
• Nicotiana tabacum
• Solanum melongena
• Sonchus oleraceus
• Zea mays

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (3/3)
• Leguminosae-Papilionoideae (5/7)

Families containing insusceptible hosts

• Compositae (3/3)
• Gramineae (1/1)
• Leguminosae-Caesalpinioideae (1/1)
• Leguminosae-Papilionoideae (2/7)
• Solanaceae (6/6)

Physical and biochemical properties

Properties of particles in sap

TIP: 60-65 °C. LIV: 7-9 days. DEP: log₁₀ minus 3-4. Leaf sap contains few virions.

Purification method

Kitajima: extraction in phosphate buffer + EDTA + Na₂SO₃. Clarification in 8% n-butanol. Differential centrifugation, then into sucrose cushion, and finally density gradient. Yields c. 6 mg per kg.

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 730 nm; 15 nm wide. Axial canal obscure. Basic helix obscure.

Cytopathology

Virions found in leaves, mesophyll and epidermis; in cytoplasm. Inclusions present in infected cells; are pinwheels.

Taxonomy and relationships

Potyvirus: Potyviridae

Virus(es) with serologically unrelated virions

Soybean mosaic, blackeye cowpea mosaic, turnip mosaic, bean common mosaic and watermelon mosaic 1 viruses.

Comments and References

References

• Santos, A.A. (1981). M.Sc. Dissertation, Univ. Brasilia.
• Santos, A.A., Lin, M.T. and Kitajima, E.W. (1981). Phytopathology 71: 890.

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.