Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Rice necrosis mosaic bymovirus

Index

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

Data collated by T. Inouye, 1989.

Nomenclature

Acronym

RNMV

ICTV decimal code

57.0.3.0.005

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Oryza sativa - spindle shaped yellow flecks and streaks in older leaves.

Transmission

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

Geographical distribution

Spreads in Japan.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Oryza sativa - spindle shaped yellow flecks and streaks.

Diagnostically insusceptible host species

Avena sativa, Hordeum vulgare, Triticum aestivum, Zea mays.

Maintenance and propagation hosts

Oryza sativa.

Assay hosts (Local lesions or Whole plants)

Oryza sativa (W).

Susceptible host species

• Oryza sativa

Insusceptible host species

• Avena sativa
• Hordeum vulgare
• Triticum aestivum
• Zea mays

Families containing susceptible hosts

• Gramineae (1/5)

Families containing insusceptible hosts

• Gramineae (4/5)

Sources of host-range data

Inouye and Fujii (1977).

Physical and biochemical properties

Properties of particles in sap

TIP: 60-65 °C. LIV: 7-14 days. DEP: log₁₀ minus 3-4. Leaf sap contains few virions.

Purification method

Fujii (1978).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with clear modal lengths (two); of 257 and 550 nm; 13-14 nm wide. Axial canal obscure. Basic helix obscure.

Cytopathology

Virions found in all parts of the host plant; in cytoplasm. Inclusions present in infected cells; are amorphous X-bodies, membranous bodies, and pinwheels; they do not contain virions (but virions are often associated with inclusions).

Taxonomy and relationships

Bymovirus: Potyviridae

Virus(es) with serologically related virions

Barley yellow mosaic and wheat yellow mosaic viruses.

Comments and References

General comments

Data on rice necrosis mosaic virus (Ghosh, 1979; 1981) in India has not been included, as its relationship to this virus is not known.

References

• Fujii, S. (1978). Special Bull. Okayama Prefectural Agric. Exp. Stn 69.
• Fujii, S., Okamoto, Y., Idei, T. and Inouye, T. (1966). Ann. Phytopath. Soc. Japan 32: 82.
• Fujii, S., Okamoto, Y., Idei, T., Shiomi, M., Inouye, T., Inouye, N., Mitsuhata, M. and Asatani, K. (1967). Ann. Phytopath. Soc. Japan 33: 105.
• Ghosh, S.K. (1981). Plant Dis. 65: 602.
• Inouye, T. and Fujii, S. (1977). CMI/AAB Descr. Pl. Viruses No. 172, 4 pp.
• Usugi, T. and Saito, Y. (1976). Ann. Phytopath. Soc. Japan 42: 12.

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.