Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Tobacco necrotic
dwarf luteovirus
Index
Data collated by S. Kubo, 1984. Revised 1989.
Nomenclature
Acronym
ICTV decimal code
Host range and symptoms
First reported
in Nicotiana tabacum; from Tochigi Prefecture, Japan; by Kubo and
Takanami (1977).
Natural host range and symptoms
Symptoms persist.
- Spinacia oleracea - leaf vein yellowing.
- Nicotiana
tabacum - interveinal leaf chlorosis, veinal necrosis, severe stunting.
- Capsella bursa-pastoris - interveinal reddening, stunting.
Transmission
Transmitted by a vector; an insect; Myzus
persicae; Aphididae. Transmitted in a persistent manner. Virus retained when
the vector moults; does not multiply in the vector; not transmitted congenitally
to the progeny of the vector; transmitted by grafting; not transmitted by
contact between plants; not transmitted by seed; not transmitted by pollen.
Geographical distribution
Experimental host range
Few (<3) families susceptible.
Diagnostically susceptible host species and symptoms
- Capsella bursa-pastoris, Datura stramonium, Nicotiana
sylvestris, N. tabacum - systemic interveinal chlorosis, veinal necrosis,
stunting.
- Physalis floridana - systemic interveinal chlorosis,
leaf rolling.
- Montia perfoliata - mild systemic interveinal
chlorosis.
Diagnostically insusceptible host species
Beta vulgaris, Brassica campestris ssp. rapa, Astragalus sinicus,
Pisum sativum, Lactuca sativa.
Maintenance and propagation hosts
Assay hosts (Local lesions or Whole plants)
Nicotiana sylvestris (W).
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Families containing
insusceptible hosts
Sources of host-range data
Physical and
biochemical properties
Properties of particles in sap
TIP: 80
°C (assayed using protoplasts). LIV: more than 6 months at 4ºC. Leaf sap
contains few virions.
Purification method
Takanami and
Kubo (1979).
Particle morphology
Virions isometric; not enveloped; 25
nm in diameter; angular in profile; without a conspicuous capsomere arrangement.
Physical properties
One sedimenting component in purified
preparations; sedimentation coefficient 115 S. Density virions disrupted
in caesium salts. Isoelectric point pH 5.3.
Biochemical properties
Virions contain 30 % nucleic acid;
70 % protein; 0 % lipid.
Genome consists of RNA; single-stranded; linear. Total genome size 6.1
kb. Genome unipartite; largest (or only) genome part 6.1 kb.
Features of the genome
Non-genomic nucleic acid
found in the virions; is satellite RNA.
Features of proteins
Virion protein(s) one;
Mr 25700; coat protein. Amino acid composition: Kubo (1981).
Replication
Replication does not depend on a helper
virus.
Cytopathology
Virions found in phloem and companion
cells; in cytoplasm, in nuclei, and in cell vacuoles. Inclusions absent from
infected cells. Other cellular changes: a fibrous appearance in cytoplasm.
Taxonomy and
relationships
Virus(es) with serologically related virions
Potato leafroll virus is closely related, but distinct; carrot red
leaf and soybean dwarf viruses are distantly related.
Comments and
References
References
- Kubo, S. and Takanami,
Y. (1977). Ann. Phytopath. Soc. Japan 43: 76.
- Kubo, S. (1981).
CMI/AAB Descr. Pl. Viruses No. 234, 4 pp.
- Takanami, Y. and Kubo, S.
(1979). J. gen. Virol. 44: 153.
- Takanami, Y. and Kubo, S.
(1979). J. gen. Virol. 44: 853.
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: 20th August 1996.' URL
http://biology.anu.edu.au/Groups/MES/vide/
Dallwitz (1980)
and
Dallwitz, Paine and Zurcher (1993)
should also be cited.
Please send comments, corrections and suggestions to:
vide-manager@biology.anu.edu.au