Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Dogwood mosaic
(?) nepovirus
Index
Data collated by O.W. Barnett, 1991.
Nomenclature
Synonyms
arabis mosaic virus (first considered to be a
strain of this virus, but now thought to be a separate viral species; Barnett,
1981; Barnett and Baxter, 1976; Handley and Barnett, 1951; Reddick et
al., 1980).
ICTV decimal code
Host range and symptoms
First reported
in Cornus florida; from Clemson, South Carolina, U.S.A.; by Barnett and
Baxter (1976).
Natural host range and symptoms
Symptoms vary seasonally.
Symptoms mosaic.
- Cornus florida - symptomless or mottling or mosaic.
Transmission
Not transmitted by Xiphinema
diversicaudatum. Virus transmitted by mechanical inoculation; transmitted by
grafting.
Ecology and control
Studies reported by Barnett
et al. (1989).
Geographical distribution
Spreads in
the USA (South Carolina).
Experimental host range
Many (>9) families
susceptible. Experimentally infected plants mostly show mosaic and/or ringspots.
Diagnostically susceptible host species and symptoms
- Chenopodium amaranticolor - chlorotic local lesions,
then systemic chlorotic spots, line patterns, mosaic.
- C. quinoa -
chlorotic local lesions becoming necrotic, then systemic mosaic and tip
necrosis.
- Vigna unguiculata ssp. unguiculata, Lupinus albus
- chlorotic ringspots and systemic mosaic.
- Pisum sativum -
chlorotic local lesions, then systemic mosaic.
- Torenia fournieri -
systemic chlorosis and veinal necrosis.
- Nicotiana occidentalis -
local lesions; systemic mosaic.
- N. tabacum - chlorotic local
lesions, then systemic in some cultivars.
- Petunia × hybrida -
necrotic ringspots; systemic necrotic spots.
- Lactuca sativa -
systemic mosaic.
Diagnostically insusceptible host species
Arabis alpina, Fragaria vesca, Phaseolus lunatus, Zinnia elegans, Citrullus
lanatus var. lanatus.
Maintenance and propagation hosts
Nicotiana clevelandii, N. benthamiana, Chenopodium quinoa,
Gomphrena globosa.
Assay hosts (Local lesions
or Whole plants)
Chenopodium quinoa (L or
W), Nicotiana clevelandii (W).
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Families containing
insusceptible hosts
Physical and
biochemical properties
Properties of particles in sap
TIP: 50
°C. LIV: 8 days. DEP: log10 minus 4.
Purification method
Particle morphology
Virions isometric; not enveloped; 27
nm in diameter; angular in profile; without a conspicuous capsomere arrangement.
Physical properties
Three sedimenting components in
purified preparations; sedimentation coefficient of the fastest 125 S
(B); of the other(s) 54 S (T). A260/A280 ratio 1.63 (B), or 1.5
(M), or 0.88 (T).
Biochemical properties
Genome consists of RNA;
single-stranded; linear. Total genome size 12.1 kb. Genome of two parts;
largest (or only) genome part the larger 8.2 kb; the 2nd largest 3.9 kb. Genomic
nucleic acid isolated by Barnett et al. (1989). Additional factor not
required for infectivity.
Features of the genome
Non-genomic nucleic acid
not found in the virions.
Features of proteins
Virion protein(s) one;
Mr 54100.
Replication
Replication does not depend on a helper
virus.
Cytopathology
Virions found in leaves and roots.
Taxonomy and
relationships
Virus(es) with serologically related virions
Arabis mosaic and grapevine fanleaf viruses.
Virus(es) with
serologically unrelated virions
Artichoke Italian
latent, cherry leaf roll, grapevine chrome mosaic, raspberry ringspot,
strawberry latent ringspot, tobacco ringspot and tomato ringspot viruses.
Additional comments on relationships
Dogwood mosaic virus is serologically more distant from arabis mosaic
virus than is grapevine fanleaf virus.
Best tests for
diagnosis
Cucumber mosaic and broad bean wilt
viruses are found in Cornus florida in the USA with the virus. It, unlike
cucumber mosaic virus, infects cowpea systemically and, unlike broad bean wilt,
induces local lesions in cucumber. Serological tests are best for diagnosis.
Comments and
References
References
- Barnett, O.W. (1981).
Abstr. 5th Int. Congr. Virol., Strasbourg, France.
- Barnett, O.W. and
Baxter, L.W. (1976). Proc. Am. Phytopathol. Soc. 3: 249.
- Barnett, O.W., Reddick, B.B., Burrows, P.M. and Baxter, L.W. (1989).
Phytopathology 79: 951.
- Handley, M.K. and Barnett, O.W.
(1981). Phytopathology 71: 223.
- Reddick, B.B., Barnett, O.W.
and Baxter, L.W. (1979). Pl. Dis. Reptr 63: 529.
- Reddick,
B.B., Barnett, O.W. and Baxter, L.W. (1980). Ornamentals South 2:
4.
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