Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Oat mosaic bymovirus

Index

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

Data collated by T. Usugi, 1987.

Nomenclature

Synonyms

soil-borne oat mosaic virus (Macfarlane et al. 1968).

Acronym

OMV

Strains

apical mosaic strain and eyespot strain.

ICTV decimal code

57.0.3.0.004

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Avena spp. - mottling.

Transmission

Transmitted by a vector; a fungus; Plasmodiophorales; Polymyxa graminis. Virus transmitted by mechanical inoculation; not transmitted by seed.

Ecology and control

Studies reported by Toler and Hebert (1964); McKinney (1946).

Geographical distribution

Spreads in the UK and the USA.

Experimental host range

Several (3-9) families susceptible.

Diagnostically susceptible host species and symptoms

• Avena sativa - mottling, especially in the first leaves.

Diagnostically insusceptible host species

Hordeum vulgare, Zea mays, Lolium spp., Oryza sativa.

Maintenance and propagation hosts

Avena sativa.

Assay hosts (Local lesions or Whole plants)

Avena sativa (W).

Susceptible host species

• Avena byzantina
• Avena sativa
• Avena strigosa
• Triticum aestivum

Insusceptible host species

• Abelmoschus esculentus
• Allium cepa
• Amaranthus caudatus
• Antirrhinum majus
• Beta vulgaris
• Brassica oleracea var. botrytis
• Capsicum annuum
• Carthamus tinctorius
• Chenopodium album
• Chenopodium amaranticolor
• Chenopodium hybridum
• Chrysanthemum morifolium
• Cicer arietinum
• Cucumis melo
• Cucumis sativus
• Cucurbita pepo
• Datura stramonium
• Glycine max
• Gomphrena globosa
• Gossypium hirsutum
• Hordeum vulgare
• Lactuca sativa
• Lathyrus odoratus
• Lolium
• Lycopersicon esculentum
• Macroptilium lathyroides
• Medicago sativa
• Nicotiana glutinosa
• Nicotiana sylvestris
• Nicotiana tabacum
• Oryza sativa
• Petunia × hybrida
• Phaseolus acutifolius
• Phaseolus lunatus
• Phaseolus vulgaris
• Phlox drummondii
• Physalis peruviana
• Pisum sativum
• Raphanus sativus
• Secale cereale
• Solanum melongena
• Solanum tuberosum
• Spinacia oleracea
• Trifolium incarnatum
• Trifolium repens
• Tulipa gesneriana
• Vicia faba
• Zea mays
• Zinnia elegans

Families containing susceptible hosts

• Gramineae (4/9)

Families containing insusceptible hosts

• Alliaceae (1/1)
• Amaranthaceae (2/2)
• Chenopodiaceae (5/5)
• Compositae (4/4)
• Cruciferae (2/2)
• Cucurbitaceae (3/3)
• Gramineae (5/9)
• Leguminosae-Papilionoideae (12/12)
• Liliaceae (1/1)
• Malvaceae (2 /2)
• Polemoniaceae (1/1)
• Scrophulariaceae (1/1)
• Solanaceae (10/10)

Sources of host-range data

McKinney (1946); Toler and Hebert (1963).

Physical and biochemical properties

Properties of particles in sap

TIP: 44-46 °C. LIV: 1-2 days. DEP: log₁₀ minus 1-2 (using the leaf rubbing method), or 2-5 (using the air brush method). Infectivity of sap not changed by treatment with di-ethyl ether. Leaf sap contains few virions.

Purification method

Usugi (1981).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with no clear modal length; of 600-750 nm; 12-14 nm wide. Axial canal obscure. Basic helix obscure.

Physical properties

Density 1.3 g cm^-3 in CsCl.

Biochemical properties

Genome consists of RNA; single-stranded; linear. Total genome size 12 kb. Genome of two parts; largest (or only) genome part the larger 8 kb; the 2nd largest 4 kb. Genomic nucleic acid isolated by nucleic acid is extracted by adding 2% SDS to purified preparation. Poly A region present.

Features of proteins

Virion protein(s) two; M_r of the larger 30000. M_r of 2nd largest 26500. Method of preparation: Usugi (1981).

Cytopathology

Virions found in all parts of the host plant; in cytoplasm. Inclusions present in infected cells; are pinwheels; they do not contain virions.

Taxonomy and relationships

Bymovirus: Potyviridae

Best tests for diagnosis

Sap inoculation tests; only Avena species are susceptible, and develop mottling symptoms below 15ºC.

Comments and References

References

• Atkinson, M. (1945). Pl. Dis. Reptr 29: 86.
• Hebert, T.T. and Panizo, C.H. (1975). CMI/AAB Descr. Pl. Viruses No. 145, 4 pp.
• Macfarlane, I., Jenkins, J.E.E. and Melville, S. (1968). Pl. Path. 17: 167.
• McKinney, H.H. (1946). Phytopathology 36: 359.
• Panizo, C.H. (1975). Ph.D. Thesis N. Carolina State University.
• Toler, R.W. and Hebert, T.T. (1963). Pl. Dis. Reptr 47: 58.
• Toler, R.W. and Hebert, T.T. (1964). Phytopathology 54: 428.
• Usugi, T. (1981). Ann. Phytopath. Soc. Japan 47: 581.

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.