Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Groundnut
rosette assistor luteovirus
Index
Data collated by R. Hull, 1981. Revised by D.V.R.
Reddy in 1989.
Nomenclature
Acronym
ICTV decimal code
Host range and symptoms
First reported
in Arachis hypogaea (groundnut rosette disease); from Tanzania and later
in Malawi, Zimbabwe and Nigeria; by Zimmerman (1907).
Natural host range and symptoms
Symptoms persist.
- Arachis hypogaea - symptomless infection.
Transmission
Transmitted by a vector; an insect; Aphis
craccivora, A. gossypii; Aphididae. Transmitted in a persistent manner.
Virus retained when the vector moults; does not multiply in the vector; not
transmitted congenitally to the progeny of the vector; can help the vector
transmission of another virus (groundnut rosette (?) umbravirus); not
transmitted by mechanical inoculation; transmitted by grafting; not transmitted
by contact between plants; not transmitted by seed; not transmitted by pollen.
Ecology and control
Studies reported by Storey and Bottomley
(1928); Storey and Ryland (1955); Davies (1975); Adams (1967); Gibbons (1977);
Reddy (1984).
Geographical distribution
Spreads in the
African region (in those countries south of the Sahara. It is the most important
virus disease of groundnuts in Africa). Found, but with no evidence of spread,
in India and the Phillipines.
Experimental host range
Few (<3) families susceptible.
Diagnostically susceptible host species and symptoms
- Arachis hypogaea - latent.
Maintenance and
propagation hosts
Assay hosts
(Local lesions or Whole plants)
Susceptible host species
Families containing susceptible hosts
Sources of host-range data
Zimmerman (1907); Hull (1972).
Physical and
biochemical properties
Properties of particles in sap
Leaf sap
contains few virions.
Purification method
Rajeshwari and
Murant (1988).
Particle morphology
Virions isometric; not enveloped; 28
nm in diameter; rounded in profile; with a conspicuous capsomere arrangement.
Physical properties
One sedimenting component in purified
preparations. Density in caesium sulphate 1.34.
Biochemical properties
Genome consists of RNA;
single-stranded; linear. Total genome size 6.9 kb. Genome unipartite; largest
(or only) genome part 6.9 kb. Genomic nucleic acid isolated by Rajeshwari and
Murant (1988).
Sequence database accession code(s)
- S54327
Em(40)_un:S54327 Gb(84)_vi:S54327 nucleoprotein (S RNA) groundnut ringspot
virus, isolate SA-05, Genomic RNA, 928 nt. 3/93 92 1 sequence.
Features of the genome
Non-genomic nucleic acid
found in the virions; is of an unusual type of structure; found in virions and
are groundnut rosette virus nucleic acid and its satellite RNA.
Features of proteins
Virion protein(s) one;
Mr 24000. Virion proteins not glycosylated. Virion proteins not
phosphorylated.
Replication
Genome replicates in cytoplasm. Replication
does not depend on a helper virus.
Cytopathology
Virions found in roots and phloem; in
cytoplasm.
Taxonomy and
relationships
Virus(es) with serologically related virions
Bean leaf roll, beet western yellows and potato leafroll viruses.
Additional comments on relationships
A MAb for the virions of potato leafroll virus reacted with those of
groundnut rosette assistor virus.
Best tests for diagnosis
Serology using luteovirus antisera.
Comments and
References
References
- Hull, R. (1967). Ann.
appl. Biol. 60: 199.
- Hull, R. (1968). Ann. appl. Biol.
62: 139.
- Hull, R. (1972). Ann. appl. Biol. 71: 135.
- Murant, A.F. (1989). CMI/AAB Descr. Pl. Viruses No. 345, 4 pp.
- Rajeshwari, R. and Murant, A.F. (1988). Ann. appl. Biol. 112:
403.
- Zimmerman, A. (1907). Pflanzer 3: 129.
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