Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Wheat yellow leaf closterovirus

Index

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

Data collated by T. Inouye, 1984.

Nomenclature

Acronym

WYLV

ICTV decimal code

17.0.1.0.007

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Avena sativa, Lolium multiflorum - leaf reddening.
• Hordeum vulgare, Secale cereale, Triticum aestivum - leaf yellowing.

Transmission

Transmitted by a vector; an insect; Rhopalosiphum maidis, R. padi; Aphididae. Transmitted in a semi-persistent manner. Virus lost by the vector when it moults; not transmitted by mechanical inoculation; not transmitted by contact between plants; not transmitted by seed.

Geographical distribution

Spreads in Italy and Japan.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Avena sativa, Lolium multiflorum - leaf reddening.
• Hordeum vulgare, Secale cereale, Triticum aestivum - leaf yellowing.

Diagnostically insusceptible host species

Oryza sativa, Zea mays.

Maintenance and propagation hosts

Avena sativa, Triticum aestivum.

Assay hosts (Local lesions or Whole plants)

Avena sativa (W); Triticum aestivum (W).

Susceptible host species

• Avena sativa
• Hordeum vulgare
• Lolium multiflorum
• Lolium perenne
• Secale cereale
• Triticum aestivum

Insusceptible host species

• Oryza sativa
• Zea mays

Families containing susceptible hosts

• Gramineae (6/8)

Families containing insusceptible hosts

• Gramineae (2/8)

Sources of host-range data

Inouye (1976).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions.

Purification method

Inouye (1976).

Particle morphology

Virions filamentous; usually flexuous; with no clear modal length; of 1600-1850 nm; 10 nm wide. Axial canal obscure. Basic helix obvious; pitch of basic helix 3.4 nm.

Cytopathology

Virions found in phloem; in cytoplasm. Inclusions present in infected cells; are membranous bodies.

Taxonomy and relationships

Closterovirus

Virus(es) with serologically related virions

Carnation necrotic fleck and carnation yellow fleck viruses, but distantly.

Virus(es) with serologically unrelated virions

Burdock yellow and citrus tristeza viruses.

Comments and References

References

• Amici, A. and Faoro, F. (1980). Riv. Patologia Veg. S. I, 16: 9.
• Inouye, T., Mitsuhata, K., Heta, H. and Hiura, U. (1973). Nogaku Kenkyu 55: 1.

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.