Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Carnation mottle
carmovirus
Index
Data collated by J.H. Tremaine and J.R. Moran, 1985.
Nomenclature
Acronym
Strains
PSR, PR4 and also
attenuated forms.
ICTV decimal code
Host range and symptoms
First reported
in Dianthus spp.; from the U.K.; by Kassanis (1955).
Natural host range and symptoms
- Dianthus
caryophyllus, D. barbatus, Saponaria vaccaria - mild mottle.
- Begonia elatior, Begonia × cheimantha, Daphne odora, Dianthus
chinensis, D. superbus, Saponaria officinalis - mottle.
Transmission
Transmitted by means not involving a vector.
Virus transmitted by mechanical inoculation; transmitted by grafting;
transmitted by contact between plants; not transmitted by seed.
Geographical distribution
Probably distributed worldwide.
Experimental host range
Many (>9) families
susceptible. Experimentally infected plants mostly show chlorotic and necrotic
local lesions.
Diagnostically susceptible host species and
symptoms
- Chenopodium amaranticolor - small chlorotic
local lesions.
- Chenopodium quinoa, Atriplex hortensis -
chlorotic spots, systemic chlorotic flecks, spots and malformation.
- Gomphrena globosa - fawn necrotic dots.
- Tetragonia
tetragonioides - small chlorotic and/or necrotic local lesions.
Maintenance and propagation hosts
Dianthus caryophyllus,
Chenopodium quinoa.
Assay hosts (Local
lesions or Whole plants)
Chenopodium
amaranticolor (L); C. quinoa (L).
Susceptible host species
Insusceptible host
species
Families containing susceptible hosts
Families containing
insusceptible hosts
Sources of host-range data
Hollings
and Stone (1964).
Physical and
biochemical properties
Properties of particles in sap
TIP: 90
°C. LIV: 70 days, or 395 days (for attenuated forms). DEP: log10 minus 5.
Infectivity of sap not changed by treatment with di-ethyl ether. Leaf sap
contains many virions.
Purification method
Particle morphology
Virions isometric; not enveloped; 34
nm in diameter; rounded in profile; without a conspicuous capsomere arrangement.
Physical properties
One sedimenting component in purified
preparations; sedimentation coefficient 122 S. Isoelectric point pH 5.2.
Biochemical properties
Virions contain 20 % nucleic acid;
80 % protein.
Genome consists of RNA; single-stranded; linear. Total genome size 4.5
kb. Genome unipartite; largest (or only) genome part 4.003 kb. Genomic nucleic
acid isolated by Carrington and Morris (1985). Base composition 27 % G; 30 % A;
19 % C; 24 % U. Infectivity retained when deproteinised with proteases. Poly A
region absent (Guilley et al., 1985). Additional factor not required for
infectivity. Genome has no tRNA-like activity. Nucleotide sequence
references: Guilley et al. (1985).
Sequence database accession code(s)
- X02986
Em(40)_vi:XXCARMV Gb(84)_vi:XXCARMV Carnation mottle virus (CarMV) complete
genomic RNA sequence. 9/93 4,003bp. 1 sequence.
Features of the genome
Non-genomic nucleic acid
found in the virions; is subgenomic mRNA; two major species, the smaller
for the coat protein mRNA is 1.6 kb long and codes for 347 amino acid
residues. The function of the larger one, 1.75 kb, is unknown (Guilley et
al., 1985).
Features of proteins
Virion protein(s) one (plus a
fragment); Mr 37787 (plus 26841); coat protein. Method of preparation:
Tremaine (1970). Amino acid sequence: Guilley et al. (1985). Amino acid
composition: Tremaine (1970).
Virus-coded non-virion proteins identified by genomic sequence
analysis; two proteins found. Mr of the largest 85831. Mr of
2nd largest 26841.
Replication
Replication does not depend on a helper
virus.
Cytopathology
Virions found in all parts of the host
plant. Inclusions absent from infected cells.
Taxonomy and
relationships
Virus(es) with serologically unrelated virions
Sowbane mosaic, broad bean mottle, tobacco ringspot, tomato bushy
stunt, carnation ringspot, turnip crinkle, carnation Italian ringspot, tobacco
necrosis, cymbidium ringspot, pelargonium leaf curl and raspberry ringspot
viruses.
Additional comments on relationships
The coat protein has amino acid sequence homology with those of
turnip crinkle and tomato bushy stunt viruses (Carrington and Morris, 1986), but
they are not serologically related.
Comments and
References
References
- Carrington, J.C, and
Morris, T.J. (1984). Virology 139: 22.
- Carrington, J.C. and
Morris, T.J. (1985). Virology 144: 1.
- Carrington, J.C. and
Morris, T.J. (1986). Virology 150: 196.
- Guilley, H.,
Carrington, J.C., Balàzs, E., Jonard, G., Richards, K. and Morris, T.J.
(1985). Nucl. Acids Res. 13: 6663.
- Hollings, M. and Stone,
O.M. (1964). Ann. appl. Biol. 53: 103.
- Hollings, M. and Stone,
O.M. (1970). CMI/AAB Descr. Pl. Viruses No. 7, 4 pp.
- Kassanis, B.
(1955). Ann. appl. Biol. 43: 103.
- Kemp, W.G. and Fazekas, L.J.
(1966). Can. J. Bot. 44: 1261.
- Koenig, R. and Lesemann, D.E.
(1985). Phytopath. Z. 112: 105.
- Moran, J.R., Wilson, J.M.,
Garrett, R.G. and Smith, P.R. (1985). Pl. Path. 34: 467.
- Tremaine, J.H. (1970). Virology 42: 611.
Illustrations
Electron micrograph.
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
