Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Cowpea golden mosaic (?) bigeminivirus

Index

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

Data collated by H.W. Rossel and A.A. Brunt, 1989.

Nomenclature

Acronym

CPGMV (CpGMV)

ICTV decimal code

29.0.3.T.051

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Vigna unguiculata - bright yellow mosaic.

Transmission

Transmitted by a vector; an insect; Bemisia tabaci; Aleyrodidae. Transmitted in a persistent manner. Virus not transmitted by mechanical inoculation; transmitted by grafting; not transmitted by contact between plants; not transmitted by seed; not transmitted by pollen.

Ecology and control

Studies reported by Rossel and Thottappilly (1985) who found that wild cowpeas are likely perennial sources of infection for cowpea crops in Nigeria. See also Anno-Nyako et al. (1983); Vetten and Allen (1983).

Geographical distribution

Spreads in India, Kenya, Mozambique, Niger, Nigeria, Pakistan, and Tanzania.

Experimental host range

Few (<3) families susceptible. Experimentally infected plants mostly show systemic mosaics, mottles, ringspots or necrosis.

Diagnostically susceptible host species and symptoms

• Vigna unguiculata - yellow mosaic.

Diagnostically insusceptible host species

Phaseolus lunatus.

Maintenance and propagation hosts

Vigna unguiculata.

Assay hosts (Local lesions or Whole plants)

Vigna unguiculata (W).

Susceptible host species

• Vigna unguiculata
• Vigna unguiculata ssp. dekindtiana var. dekindtiana
• Vigna unguiculata ssp. sesquipedalis

Insusceptible host species

• Phaseolus lunatus

Families containing susceptible hosts

• Leguminosae-Papilionoideae (3/4)

Families containing insusceptible hosts

• Leguminosae-Papilionoideae (1/4)

Sources of host-range data

Rossel and Thottappilly (1985).

Physical and biochemical properties

No data available.

Taxonomy and relationships

bigeminivirus: Geminiviridae

Additional comments on relationships

The failure of reciprocal transmission tests using grafting and Bemisia tabaci indicate that the virus is distinct from the whitefly-transmitted virus inducing similar symptoms in Phaseolus lunatus (Lima bean) in Nigeria (Williams, 1976).

Comments and References

General comments

Rossel and Thottappilly (1985) note that similar cowpea diseases occur in Pakistan, East Africa and Niger (Ahmad, 1978; Sharma and Varma, 1976; Singh and Allen, 1979).

References

• Ahmad, M. (1978). Pl. Dis. Reptr 62: 224.
• Anno-Nyako, F.O., Vetten, H.J., Allen, D.J. and Thottappilly, G. (1983). Ann. appl. Biol. 102: 319.
• Rossel, H.W. (1977a). Tropical Grain Legume Bulletin 8: 41.
• Rossel, H.W. (1977b). Rep. Int. Inst. Trop. Agric. 1977, pp. 28, 89.
• Rossel, H.W. and Thottappilly, G. (1985). Virus Diseases of Important Food Crops in Tropical Africa: Ibadan, Nigeria, Int. Inst. Trop. Agric., p. 35.
• Sharma, S.R. and Varma, A. (1976). Indian Phytopath. 29: 421.
• Singh, S.R. and Allen, D.J. (1979). In: Cowpea Pests and Diseases. Ibadan, Nigeria. Int. Inst. Trop. Agric.
• Vetten, H.J. and Allen, D.J. (1983). Ann. appl. Biol. 102: 219.
• Williams, R.J. (1976). Pl. Dis. Reptr 60: 853.

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.