Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Oat necrotic mottle rymovirus

Index

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

Data collated by A.A. Brunt, 1991.

Nomenclature

Acronym

ONMV

ICTV decimal code

57.0.2.0.004

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Avena sativa - leaf chlorosis and, in spring-sown crops, abortion of florets, seed loss and plant stunting.
• Poa canadensis, P. pratensis - mild leaf chlorosis or symptomless infection.

Transmission

Virus transmitted by mechanical inoculation; not transmitted by contact between plants.

Ecology and control

Studies reported by Gill and Westdal (1966); Poa pratensis and P. canadensis adjacent to crops are often infected and may be important sources of infection.

Geographical distribution

Spreads in Canada.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Avena sativa - leaf chlorosis, sheath mottling or necrosis.

Diagnostically insusceptible host species

Elytrigia repens, Dactylis glomerata, Festuca elatior, F. rubra, Hordeum vulgare, Lolium perenne, Lophopyrum elongatum, Secale cereale, Triticum aestivum, Zea mays.

Maintenance and propagation hosts

Avena sativa cv. Clintland-64.

Assay hosts (Local lesions or Whole plants)

Avena sativa cv. Clintland-64 (W).

Susceptible host species

• Avena sativa
• Poa canadensis
• Poa pratensis

Insusceptible host species

• Agrostis alba
• Agrostis palustris
• Agrostis tenuis
• Dactylis glomerata
• Elytrigia intermedia
• Elytrigia repens
• Festuca elatior
• Festuca rubra
• Hordeum vulgare
• Lolium perenne
• Lophopyrum elongatum
• Secale cereale
• Triticum aestivum
• Zea mays

Families containing susceptible hosts

• Gramineae (3/17)

Families containing insusceptible hosts

• Gramineae (14/17)

Physical and biochemical properties

Properties of particles in sap

TIP: 50 °C. LIV: 3-7 days (at 23ºC), or 42-56 days (at 4ºC). DEP: log₁₀ minus 3.

Purification method

Gill (1971).

Particle morphology

Virions filamentous; usually flexuous; with a clear modal length; of 720 nm; 11 nm wide.

Physical properties

A₂₆₀/A₂₈₀ ratio 1.33.

Biochemical properties

Genome consists of RNA; single-stranded.

Features of proteins

Virion protein(s) one; M_r 39800; coat protein.

Cytopathology

Virions found in cytoplasm. Inclusions present in infected cells; are pinwheels; they do not contain virions. Other cellular changes: the occurrence of deposits, sometimes extensive, on cell walls.

Taxonomy and relationships

Rymovirus: Potyviridae

Virus(es) with serologically related virions

Wheat streak mosaic virus.

Virus(es) with serologically unrelated virions

Agropyron mosaic, hordeum mosaic and ryegrass mosaic viruses.

Comments and References

References

• Gill, C.C. (1967). Phytopathology 57: 302.
• Gill, C.C. (1971). J. gen. Virol. 12: 259.
• Gill, C.C. (1974). Can. J. Bot. 52: 621.
• Gill, C.C. (1976a). Phytopathology 66: 415.
• Gill, C.C. (1976b). CMI/AAB Descr. Pl. Viruses No. 170, 4 pp.
• Gill, C.C. (1980). Can. J. Pl. Path. 2: 86.
• Gill, C.C. and Westdal, P.H. (1966). Can. Pl. Dis. Surv. 46: 18.

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.