Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Satsuma dwarf
(?) nepovirus
Index
Data collated by A.A. Brunt and Y. Saito, 1987.
Nomenclature
Acronym
Strains
citrus mosaic,
natsudaidai dwarf and navel orange infectious mottling.
ICTV decimal code
Host range and symptoms
First reported
in Citrus unshiu (Satsuma); from Japan; by Yamada (1950).
Natural host range and symptoms
Symptoms persist.
- Citrus unshiu - stunting, leaf malformation and rosetting.
Transmission
Virus transmitted by mechanical inoculation;
transmitted by grafting; not transmitted by contact between plants; transmitted
by seed (8.6% transmission in Phaseolus vulgaris).
Ecology and
control
Studies reported by Usugi and Saito (1979).
Geographical distribution
Spreads in Japan and Turkey.
Experimental host range
Several (3-9) families
susceptible.
Diagnostically susceptible host species and
symptoms
- Chenopodium quinoa - chlorotic and necrotic
local lesions; not systemic.
- Physalis floridana - systemic
mottling and leaf malformation.
- Sesamum indicum - local lesions;
systemic vein clearing, necrosis and leaf deformation.
- Vigna
unguiculata - local lesions; vein clearing and mottling, necrotic
streaking of petioles and stems.
Maintenance and propagation hosts
Assay hosts (Local lesions or Whole plants)
Susceptible host species
Families containing susceptible hosts
Sources of host-range data
Tanaka
and Nakanishi (1972); Usugi and Saito (1977).
Physical and
biochemical properties
Properties of particles in sap
TIP:
50-55 °C (in Physalis floridana sap). LIV: 8-12 days (at room
temperature). DEP: log10 minus 3-4. Leaf sap contains few virions.
Purification method
Particle morphology
Virions isometric; not enveloped; 26
nm in diameter; angular in profile; without a conspicuous capsomere arrangement.
Physical properties
Three sedimenting components in
purified preparations; sedimentation coefficient of the fastest 129 S
(B); of the other(s) 119 S (M). Density 1.46 g cm-3 in CsCl (B), or
1.43 g cm-3 in CsCl (M).
Biochemical properties
Virions contain 37 % nucleic acid
(B), or 33 % nucleic acid (M), or 0 % nucleic acid (T); 63 % protein (B), or 67
% protein (M), or 100 % protein (T).
Genome consists of RNA; single-stranded. Total genome size 10.1 kb.
Genome of two parts; largest (or only) genome part the larger 5.3 kb; the 2nd
largest 4.8 kb.
Features of proteins
Virion protein(s) two;
Mr of the larger 42000; coat protein. Mr of 2nd largest
21000; coat protein. Method of preparation: Usugi and Saito (1979).
Cytopathology
Virions found in mesophyll and epidermis;
in cytoplasm. Inclusions present in infected cells; are membranous bodies
(vesicular). Other cellular changes: tubular outgrowths of cell walls containing
a single row of virions.
Taxonomy and
relationships
Virus(es) with serologically unrelated virions
Cherry leaf roll, citrus leaf rugose, grapevine Bulgarian latent,
mulberry ringspot, raspberry ringspot, strawberry latent ringspot, tobacco
ringspot, tomato black ring and tomato ringspot viruses.
Comments and
References
References
- Tanaka and Nakanishi
(1972). Ann. Phytopath. Soc. Japan 38: 212.
- Usugi, T. and
Saito, Y. (1977). Ann. Phytopath. Soc. Japan 43: 137.
- Usugi,
T. and Saito, Y. (1979). CMI/AAB Descr. Pl. Viruses No. 208, 4 pp.
- Yamada, M. (1950). Bull. Hort. Div. Tokai-Kirki Agric. Exp. Stn
1: 61.
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