Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Clover enation (?) nucleorhabdovirus

Index

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

Data collated by P.W.G. Chu, 1985.

Nomenclature

Synonyms

clover enation mosaic virus.

Acronym

CLOEV (ClEV)

ICTV decimal code

62.U.P.0.010

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Trifolium repens - enations on main veins of leaves.

Transmission

Virus not transmitted by mechanical inoculation; transmitted by grafting.

Geographical distribution

Spreads in Italy (the north).

Experimental host range

Experimentally infected plants mostly show tumours.

Diagnostically susceptible host species and symptoms

• Vicia faba - vein clearing, then vein swelling to give chains of spindle-shaped tumours.

Susceptible host species

• Trifolium incarnatum
• Trifolium pratense
• Trifolium repens
• Vicia faba

Families containing susceptible hosts

• Leguminosae-Papilionoideae (4/4)

Physical and biochemical properties

Particle morphology

Virions rhabdo- or bullet-shaped; enveloped; with a clear modal length; of 200 nm; 80 nm wide. Axial canal obvious.

Cytopathology

Virions found in in leaf tissue with enations; in cytoplasm, in nuclei, and in mitochondria. Inclusions present in infected cells; are crystals in the nucleus (arrays of tubular virions), or membranous bodies (formed by the endoplasmic reticulum); they contain virions. Other cellular changes: enations on the abaxial surface of the main leaf veins, containing tumorous virus-containing cells with enlarged nuclei and nucleoli surrounded by normal virus-free cells.

Taxonomy and relationships

Possible Nucleorhabdovirus: Rhabdoviridae

Comments and References

General comments

A MLO is thought to cause a similar disease.

References

• Bogatyrenko, T.N. (1977). Biol. Nauki 20: 120.
• Francki, R.I.B. (1973). Adv. Virus Res. 18: 257.
• Matthews, R.E.F. (1982). 2nd Report of ICTV.
• Rubio-Huertos, M. and Bos, L. (1969). Neth J. Pl. Path. 75: 329.

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.