Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Rhododendron necrotic ringspot (?) potexvirus

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

RoNRSV

ICTV decimal code

56.0.1.T.016

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Rhododendron spp., Kalmia latifolia - concentric necrotic rings in leaves.

Transmission

Virus not transmitted by mechanical inoculation; transmitted by grafting.

Geographical distribution

Spreads in Canada, the USA, and the UK (probably).

Susceptible host species

• Kalmia latifolia
• Rhododendron

Families containing susceptible hosts

• Ericaceae (2/2)

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions.

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 504 nm; 13 nm wide.

Cytopathology

Virions found in leaves and mesophyll; in cytoplasm. Inclusions present in infected cells; aggregated they contain virions.

Taxonomy and relationships

Possible Potexvirus

Comments and References

References

• Coyier, D.L., Stace-Smith, R., Allen, T.C. and Leung, E. (1976). Acta Hort. 59: 93.
• Coyier, D.L., Stace-Smith, R., Allen, T.C. and Leung, E. (1977). Phytopathology 67: 1090.
• Pearse, A.G.E. (1968). Gard. Chron. 164: 5.

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.