Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Rice transitory yellowing (?) nucleorhabdovirus

Index

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

Data collated by E. Shikata, 1989.

Nomenclature

Acronym

RTYV

ICTV decimal code

62.U.P.0.047

Host range and symptoms

Natural host range and symptoms

Symptoms disappear soon after infection.
• Oryza sativa - japonica types are more susceptible than indica types. Yellow or orange-buff colouring of oldest leaves, some rusty flecking. No systemic symptoms.

Transmission

Transmitted by a vector; an insect; Nephotettix nigropictus, N. cincticeps, N. impictus; Cicadellidae. Transmitted in a persistent manner. Virus retained when the vector moults; multiplies in the vector; not transmitted congenitally to the progeny of the vector; not transmitted by mechanical inoculation; not transmitted by contact between plants.

Geographical distribution

Spreads in Taiwan. Found, but with no evidence of spread, in Okinawa, Japan.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Oryza sativa japonica type - yellow or orange-buff colouring of oldest leaves.

Maintenance and propagation hosts

Oryza sativa japonica type.

Assay hosts (Local lesions or Whole plants)

Oryza sativa japonica type (W).

Susceptible host species

• Oryza sativa
• Oryza sativa var. japonica

Insusceptible host species

• Echinochloa colona
• Echinochloa crus-galli

Families containing susceptible hosts

• Gramineae (2/4)

Families containing insusceptible hosts

• Gramineae (2/4)

Sources of host-range data

Chiu et al. (1968).

Physical and biochemical properties

Properties of particles in sap

LIV: 11 days (at 0ºC to 2ºC). DEP: log₁₀ minus 5.

Purification method

Inoue et al. (1986).

Particle morphology

Virions rhabdo- or bullet-shaped; of 129 nm (120-140 nm); 96 nm wide.

Cytopathology

Virions found in leaves, phloem and companion cells; in the perinuclear space.

Taxonomy and relationships

Possible Nucleorhabdovirus: Rhabdoviridae

Comments and References

References

• Chiu, R.J., Jean, J.H., Chen, M.H. and Lo, T.C. (1968). Phytopathology 58: 740.
• Chiu, R.J., Lo, T.C., Pi, C.L. and Chen, M.H. (1965). Bot. Bull. Acad. Sin., Taipei 6: 1.
• Inoue et al. (1986). Tech. Bull. Trop. Agr. Res. Center, Japan 21: 65.
• Shikata, E. (1972). CMI/AAB Descr. Pl. Viruses No. 100, 3 pp.

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.