Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Groundnut chlorotic spot (?) potexvirus

Index

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

Data collated by A.A. Brunt, 1990.

Nomenclature

ICTV decimal code

56.0.1.T.D.06

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Arachis hypogaea - chlorotic spotting and mottling, ring spotting and line patterns in young leaves and green vein-banding in older leaves.

Transmission

Transmitted by a vector; an insect; Aphis craccivora and A. spiraecola; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation.

Geographical distribution

Spreads in Cote d'Ivoire.

Experimental host range

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

Diagnostically susceptible host species and symptoms

• Arachis hypogaea.
• Chenopodium amaranticolor - red necrotic local lesions; not systemic.
• Physalis floridana - green systemic mosaic.
• Nicotiana benthamiana - leaf malformation.
• Nicotiana megalosiphon - systemic chlorotic spotting.

Maintenance and propagation hosts

Arachis hypogaea, Nicotiana megalosiphon, Physalis floridana.

Assay hosts (Local lesions or Whole plants)

Chenopodium amaranticolor (L).

Susceptible host species

• Arachis hypogaea
• Chenopodium amaranticolor
• Nicotiana benthamiana
• Nicotiana megalosiphon
• Physalis floridana

Families containing susceptible hosts

• Chenopodiaceae (1/1)
• Leguminosae-Papilionoideae (1/1)
• Solanaceae (3/3)

Sources of host-range data

Fauquet et al. (1985).

Physical and biochemical properties

Properties of particles in sap

TIP: 55-60 °C. LIV: 5 days (at 24ºC), or 14 days (at 4ºC). DEP: log₁₀ minus 5-6. Leaf sap contains many virions.

Purification method

Fauquet et al. (1985).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 456 nm (»22); 13 nm wide (»1). Axial canal obscure. Basic helix obscure.

Taxonomy and relationships

Possible Potexvirus

Virus(es) with serologically unrelated virions

Cactus X, clover yellow mosaic, cymbidium mosaic, dioscorea latent, narcissus mosaic, papaya mosaic, potato X and white clover mosaic viruses.

Comments and References

General comments

The virus differs from better characterised potexviruses in being transmitted in the non-persistent manner by aphids.

References

• Fauquet, C., Thouvenel, J.-C. and Fargette, D. (1985). C.r. hebd. Seanc. Acad. Sci., Paris, Serie III No. 17: 773.

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.