Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Neckar River tombusvirus

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

NRV

ICTV decimal code

74.0.1.0.010

Host range and symptoms

Transmission

Virus transmitted by mechanical inoculation.

Geographical distribution

Found, but with no evidence of spread, in Germany.

Experimental host range

Several (3-9) families susceptible.

Diagnostically susceptible host species and symptoms

• Nicotiana benthamiana, N. clevelandii - conspicuous systemic leaf chlorosis.
• Chenopodium quinoa, Datura stramonium, Gomphrena globosa, Nicotiana tabacum, Petunia × hybrida - local lesions; no systemic infection.

Maintenance and propagation hosts

Nicotiana benthamiana, N. clevelandii.

Assay hosts (Local lesions or Whole plants)

Chenopodium quinoa (L).

Susceptible host species

• Chenopodium quinoa
• Datura stramonium
• Gomphrena globosa
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana tabacum
• Petunia × hybrida

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (1/1)
• Solanaceae (5/5)

Sources of host-range data

Koenig and Lesemann (1985).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains many virions.

Purification method

Gallitelli et al. (1985).

Particle morphology

Virions isometric; not enveloped; 30 nm in diameter; rounded in profile.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 133 S. Density 1.357 g cm^-3 in CsCl.

Biochemical properties

Genome consists of RNA; single-stranded; unipartite; largest (or only) genome part 4.7 kb.

Features of proteins

Virion protein(s) one; M_r 45000.

Cytopathology

Virions found in leaves and the mesophyll; in cytoplasm. Other cellular changes: vesicles at the periphery of microbodies.

Taxonomy and relationships

Tombusvirus: Tombusviridae

Virus(es) with serologically related virions

Eggplant mottled crinkle, pelargonium leaf curl, Moroccan pepper, petunia asteroid mosaic, tomato bushy stunt and carnation Italian ringspot viruses.

Virus(es) with serologically unrelated virions

Cymbidium ringspot virus.

Additional comments on relationships

The viral genome has about 15% nucleotide sequence homology with that of tomato bushy stunt tombusvirus.

Comments and References

References

• Gallitelli, D. and Russo, M. (1987). J. Phytopath. 119: 106.
• Koenig, R. and Gibbs, A.J. (1986). J. gen. Virol. 67: 75.
• Koenig, R. and Lesemann, D.-E. (1985). Phytopath. Z. 112: 105.

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.