Descriptions and Lists from
the VIDE Database
Data collated by A.J. Gibbs, 1981. Revised 1989.
(Mount Jukes), Jervis Bay, Wapengo; these being the type members of three
geographically separate strains found in north Queensland, central coast N.S.W.
and south coast N.S.W. respectively.
ICTV decimal code
Host range and symptoms First reported
in Kennedya rubicunda; from samples from Murrays Beach, Jervis Bay,
Australia; by Dale et al. (1975, 1976); Gibbs (1978).
Natural host range and symptoms
Symptoms persist (and are
- Kennedya rubicunda, Desmodium triflorum, D. scorpiurus, Indigofera
australis - mild chlorotic local lesions, systemic blotchy yellow mosaic.
Virus transmitted by mechanical inoculation;
not transmitted by contact between plants; not transmitted by seed; not
transmitted by pollen.
Australia (the eastern coastal region).
Experimental host range
Few (<3) families susceptible.
Diagnostically susceptible host species and symptoms
- Glycine max - blotchy systemic yellow mosaic.
- Kennedya rubicunda - systemic yellow mosaic.
vulgaris cv. Redland Pioneer, Pisum sativum - chlorotic local
lesions; then systemic yellow mosaic.
- Vigna radiata - necrotic
local lesions; systemic leaf malformation.
- Datura stramonium, Nicotiana
glutinosa - chlorotic local lesions; not systemic.
Diagnostically insusceptible host species
esculentum, Nicotiana clevelandii.
Maintenance and propagation
Pisum sativum cv. Early Massey, Glycine max.
Assay hosts (Local lesions or Whole plants)
Phaseolus vulgaris cv. Redland
Pioneer (L), Pisum sativum cv. Massey (W), Vigna radiata (L).
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Sources of host-range data
Gibbs (1976); Gibbs (1978) and unpublished data.
Properties of particles in sap
65-70 °C. LIV: 10-100 days. DEP: log10 minus 5-6. Infectivity of sap not
changed by treatment with di-ethyl ether. Leaf sap contains many virions.
Virions isometric; not enveloped; 28
nm in diameter; rounded in profile; with a conspicuous capsomere arrangement.
Two sedimenting components in
purified preparations; sedimentation coefficient of the fastest; B 110 S;
of the other(s) 54 S. Isoelectric point pH 3.3-3.57. A260/A280
ratio 0.81 (T), or 1.69 (B).
Virions contain 34.1 % nucleic
acid; 65.9 % protein; 0 % lipid.
Genome consists of RNA; single-stranded; linear. Total genome size 6.362
kb. Genome unipartite; largest (or only) genome part 6.362 kb. Base composition
15.1 % G; 22.5 % A; 39.4 % C; 23 % U. 5´ terminus of RNA has a methylated
nucleotide cap. Infectivity retained when deproteinised with phenol or
detergent. Poly A region absent. Additional factor not required for infectivity.
Nucleotide sequence references: Ding et al. (1990).
Sequence database accession code(s)
Em(40)_vi:MTYCG01 Gb(84)_vi:KYVCGA Kennedya yellow mosaic virus genome, complete
sequence. 11/90 6,362bp.
- M15286 Em(40)_vi:TYMTY3KY Gb(84)_vi:KYV3KYMV
Kennedya yellow mosaic virus 3´ end which can form a tRNA-like structure.
- M58310 Em(40)_vi:KYVRRLT Gb(84)_vi:KYVRRLT Kennedya yellow
mosaic virus 3´ terminal tRNA-like structure. 8/91 84bp. 3 sequences.
Features of the genome
Non-genomic nucleic acid
found in the virions; is of an unusual type of structure (mRNA like).
Features of proteins
Virion protein(s) one;
Genome replicates in association with
chloroplasts (in the vesicles). Coat protein mRNA translated in the
cytoplasm. Replication does not depend on a helper virus.
Virions found in all parts of the host
plant; in cytoplasm. Inclusions absent from infected cells. Other cellular
changes: vesiculation of the chloroplasts outer membrane.
Virus(es) with serologically related virions
Turnip yellow mosaic, clitoria yellow vein and okra mosaic, closely;
desmodium yellow mottle and cacao yellow mosaic viruses more distantly.
Additional comments on relationships
CDNA-RNA hybridization tests correlate with the serological
relationships, but also show an unexpected close relationship with eggplant
mosaic tymovirus, which is serologically very distantly related to kennedya
yellow mosaic virus.
- Blok, J., Gibbs, A.J.
and Mackenzie, A. (1987). Arch. Virol. 96: 225.
- Dale, J.L.,
Gardiner, J.E. and Gibbs, A.J. (1975). Aust. Pl. Path. Soc. Newsl.
- Dale, J.L. and Gibbs, A.J. (1976). Aust. J. biol. Sci.
- Ding, S., Keese, P. and Gibbs, A.J. (1990). J. gen.
Virol. 71: 925.
- Gibbs, A.J. (1978). CMI/AAB Descr. Pl.
Viruses No. 193, 4 pp.
Cite this publication as:
Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.)
`Plant Viruses Online: Descriptions and Lists from the VIDE Database.
Version: 16th January 1997.' URL
Dallwitz, Paine and Zurcher (1993)
should also be cited.
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