Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Chrysanthemum B
carlavirus
Index
Data collated by J.R. Moran, 1987.
Nomenclature
Synonyms
chrysanthemum virus Q, chrysanthemum dwarf mottle
virus, chrysanthemum mild mosaic virus (Hollings, 1957), chrysanthemum necrotic
mottle virus, gynura latent virus.
Acronym
Strains
chrysanthemum vein mottle virus (Hakkaart and
Maat, 1974).
ICTV decimal code
Host range and symptoms
First reported
in Chrysanthemum morifolium; from the Netherlands; by Noordam (1952).
Natural host range and symptoms
Symptoms persist.
- Chrysanthemum morifolium - sometimes mottling, vein clearing
or necrotic streaks, but often symptomless.
- Gynura aurantiaca -
symptomless infection.
Transmission
Transmitted by a vector; an insect; Myzus
persicae, Macrosiphum euphorbiae, Acyrthosiphon (Aulacorthum) solani, Coloradoa
rufomaculata and Macrosiphoniella (Pyrethromyzus) sanborni (Hollings,
1957); Aphididae. Transmitted in a non-persistent manner. Virus transmitted
by mechanical inoculation; transmitted by grafting; not transmitted by contact
between plants; not transmitted by seed.
Ecology and control
Studies reported by Hollings (1957).
Geographical
distribution
Probably distributed worldwide (wherever chrysanthemums
are grown).
Experimental host range
Few (<3) families susceptible.
Experimentally infected plants mostly show chlorotic local lesions, systemic
mottle.
Diagnostically susceptible host species and symptoms
- Nicotiana glutinosa, Petunia × hybrida, Tetragonia
tetragonioides - chlorotic spots.
- Nicotiana clevelandii -
systemic mottling, vein clearing.
Diagnostically insusceptible host
species
Maintenance and
propagation hosts
Assay hosts
(Local lesions or Whole plants)
Petunia × hybrida (L) but not reliable.
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:
70-75 °C. LIV: 2-6 days. DEP: log10 minus 2-4. Leaf sap contains few virions.
Purification method
Particle morphology
Virions filamentous; not enveloped;
usually straight; with a clear modal length; of 685 nm.
Physical properties
One sedimenting component in purified
preparations; sedimentation coefficient 168 S.
Biochemical properties
Genome consists of RNA;
single-stranded. Total genome size 7.5 kb. Genome unipartite; largest (or
only) genome part 7.5 kb.
Sequence database accession code(s)
- S60150
Em(40)_vi:S60150 Gb(84)_vi:S60150 ORF1...ORF6 (3´ terminal reigon)
chrysanthemum virus B CVB, Genomic RNA, 6 genes, 3426 nt. 1 sequence.
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
Carnation latent, potato S and potato M and helenium S viruses.
Comments and
References
References
- Hakkaart, F.A. and Maat,
D.Z. (1974). Neth. J. Pl. Path. 80: 97.
- Hollings, M. (1957).
Ann. appl. Biol. 45: 589.
- Hollings, M. (1972). CMI/AAB
Descr. Pl. Viruses No. 110, 4 pp.
- Hollings, M., Stone, O.M., Thorne,
J.M. and Atkey, P.T. (1970). Rep. Glasshouse Crops Res. Inst. 1969, p.
128.
- Noordam, D. (1952). Tijdsch. PlZiekt. 58: 121.
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