Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Oak ringspot virus

Index

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

Data collated by J.P. Fulton, K.S. Kim and O.W. Barnett, 1987.

Nomenclature

ICTV decimal code

79.0.P.DE.28

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Quercus marilandica, Q. velutina - chlorotic ringspots and mosaic, vein-banding and oak leaf patterns, especially on older leaves.

Transmission

Virus not transmitted by mechanical inoculation; transmitted by grafting.

Ecology and control

Studies reported by Barnett (1971); Kim and Fulton (1973).

Geographical distribution

Spreads in the USA.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

Quercus marilandica, Q. velutina.

Maintenance and propagation hosts

Quercus marilandica, Q. velutina.

Susceptible host species

• Quercus marilandica
• Quercus velutina

Families containing susceptible hosts

• Fagaceae (2/2)

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions (none found in extracts).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with no clear modal length; 13 nm wide. Axial canal obscure.

Cytopathology

Virions found in leaves and mesophyll; in cytoplasm. Inclusions present in infected cells; they contain virions. Other cellular changes: areas of vesiculation, prominent Golgi and paramural bodies, and cell wall protrusions.

Taxonomy and relationships

(ungrouped)

Best tests for diagnosis

A virus-like disorder of overcup oak is not graft transmissible (Gregory and Seliskar, 1970), and no virions could be found (Neinhaus and Yarwood, 1972).

Comments and References

General comments

The relationship to viruses of oak in Europe (Blattny and Prochazkov, 1966; Schmelzer et al., 1966) is not known.

References

• Barnett, O.W. (1971). Pl. Dis. Reptr 55: 411.
• Blattny, C. and Prochazkova, Z. (1966). Rev. Roumaine Biol. Ser. Bot. 11(1/3): 39.
• Gregory, G.F. and Seliskar, C.E. (1970). Pl. Dis. Reptr 54: 844.
• Kim, K.S. and Fulton, J.P. (1973). Pl. Dis. Reptr 57: 1029.
• Nienhaus, F. and Yarwood, C.E. (1972). Phytopathology 62: 313.
• Schmelzer, K., Schmidt, H.E. and Schmidt, H.B. (1966). Arch. Forstw. 15: 107.

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.