Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Dulcamara mottle
tymovirus
Index
Data collated by A.J. Gibbs, 1991.
Nomenclature
Acronym
ICTV decimal code
Host range and symptoms
First reported
in Solanum dulcamara; from the U.K. in Hertfordshire; by Gibbs et
al. (1966).
Natural host range and symptoms
Symptoms persist.
Symptoms mottle.
- Solanum dulcamara - mild mottle.
Transmission
Transmitted by a vector; an insect;
Psylloides affinis; Coleoptera. Transmitted in a semi-persistent
manner. Virus transmitted by mechanical inoculation; not transmitted by contact
between plants; transmitted by seed.
Ecology and control
Studies reported by Gibbs et al. (1966).
Geographical
distribution
Experimental host range
Several (3-9) families
susceptible. Experimentally infected plants mostly show local lesions, mosaics,
mottles, distortion.
Diagnostically susceptible host species
and symptoms
- Datura stramonium - local lesions, mottle.
- Lycopersicon esculentum - mottle.
- Nicotiana clevelandii, N.
glutinosa - local lesions, mosaic, distortion.
- Solanum nigrum
- mosaic.
Diagnostically insusceptible host species
Solanum tuberosum several cultivars.
Maintenance and
propagation hosts
Nicotiana clevelandii, N. glutinosa.
Assay hosts (Local lesions or Whole plants)
Nicotiana glutinosa (L/W).
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Families containing
insusceptible hosts
Sources of host-range data
Gibbs
et al. (1966); Guy et al. (1984).
Physical and
biochemical properties
Properties of particles in sap
TIP:
65-70 °C. LIV: 2-7 days. DEP: log10 minus 3-4. Infectivity of sap not changed
by treatment with di-ethyl ether. Leaf sap contains many virions.
Particle morphology
Virions isometric; not enveloped; 28
nm in diameter; rounded in profile; with a conspicuous capsomere arrangement.
Physical properties
Two sedimenting components in
purified preparations; sedimentation coefficient of the fastest 121 S; of
the other(s) 55 S. Isoelectric point pH 8.15.
Biochemical properties
Virions contain 37.5 % nucleic
acid; 62.5 % protein.
Genome consists of RNA; single-stranded; linear. Total genome size 6 kb.
Genome unipartite; largest (or only) genome part 6 kb. Base composition 16.7 %
G; 22.6 % A; 32.2 % C; 28.5 % U. 5´ terminus of RNA has a methylated
nucleotide cap. Infectivity retained when deproteinised with proteases; retained
when deproteinised with phenol or detergent. Poly A region present; 3´
terminal poly A tract. Additional factor not required for infectivity. Genome
has no tRNA-like activity.
Features of the genome
Sub-genomic mRNA
found in infected cells; mRNA for virion protein.
Features of proteins
Virion proteins not
glycosylated. Virion proteins not phosphorylated.
Replication
Genome replicates in association with
chloroplasts (in vesicles in the peripheral membrane). Coat protein mRNA
translated in the cytoplasm. Replication does not depend on a helper virus.
Cytopathology
Virions found in all parts of the host
plant; in cytoplasm. Inclusions absent from infected cells.
Taxonomy and
relationships
Virus(es) with serologically related virions
Andean potato latent, belladonna mottle, eggplant mosaic and ononis
yellow mosaic viruses.
Comments and
References
References
- Gibbs, A.J.,
Hecht-Poinar, E., Woods, R.D. and McKee, R.K. (1966). J. gen. Microbiol.
44: 177.
- Guy, P.L., Dale, J.L., Adena, M.A. and Gibbs, A.J. (1984).
Pl. Path. 33: 337.
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