Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Iris Japanese necrotic ring virus

Index

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

Data collated by A.A. Brunt, 1992.

Nomenclature

ICTV decimal code

79.0.P.DE.20

Host range and symptoms

Natural host range and symptoms

• Iris kaempferi - necrotic spindle-shaped necrotic streaks or rings in leaves.

Transmission

Not transmitted by Myzus persicae, Rhopalosiphum padi. Virus transmitted by mechanical inoculation.

Geographical distribution

Spreads in Japan.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Iris kaempferi - necrotic streaks and rings in systemically infected leaves.
• Iris laevigata, I. sanguinea - symptomless systemic infection.

Maintenance and propagation hosts

Iris kaempferi.

Assay hosts (Local lesions or Whole plants)

Iris kaempferi (W).

Susceptible host species

• Iris kaempferi
• Iris laevigata
• Iris sanguinea

Families containing susceptible hosts

• Iridaceae (3/3)

Comments on host-range

The virus failed to infect any of 40 other species in 13 families.

Physical and biochemical properties

Particle morphology

Virions isometric; not enveloped; 35 nm in diameter; rounded in profile.

Cytopathology

Virions found in leaves and mesophyll; in cytoplasm.

Taxonomy and relationships

(ungrouped)

Comments and References

References

• Yasukawa, K., Osaki, T. and Inouye, T. (1991). Bull. Univ. Osaka, Ser. B 43: 21.

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.