Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Strawberry mottle virus

Index

• Nomenclature
• Host range, transmission and symptoms
• Physical and biochemical properties
• Taxonomy and relationships
• Comments and References

Data collated by N. Yoshikawa, 1991.

Nomenclature

Synonyms

strawberry mild crinkle virus.

Strains

many strains of differing severity have been described.

ICTV decimal code

79.0.P.DE.37

Host range and symptoms

Natural host range and symptoms

Symptoms vary seasonally, or none (reduced vigour and yield).
• Fragaria × ananassa.

Transmission

Transmitted by a vector; an insect; Chaetosiphon fragaraefolii, C. thomasi, C. minor, C. jacobi, Aphis gossypii; Aphididae. Transmitted in a semi-persistent manner. Virus lost by the vector when it moults; does not multiply in the vector; not transmitted congenitally to the progeny of the vector; transmitted by mechanical inoculation; transmitted by grafting; not transmitted by contact between plants; not transmitted by seed.

Geographical distribution

Probably distributed worldwide (where strawberries are grown).

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show Fragaria vesca shows vein clearing, mottling and dwarfing.

Diagnostically susceptible host species and symptoms

• Fragaria × ananassa, Gomphrena globosa, Potentilla canadensis, P. sterilis - symptomless.
• Fragaria virginiana - dwarfing of leaves.
• F. vesca - mottle, vein clearing and stunting.
• Potentilla adscherica - vein chlorosis.
• Chenopodium quinoa - chlorotic local lesions and systemic mottling.
• C. amaranticolor - vein clearing and necrotic spots.
• Cyamopsis tetragonoloba - chlorotic local lesions, systemic vein clearing.

Maintenance and propagation hosts

Fragaria × ananassa, F. virginiana.

Assay hosts (Local lesions or Whole plants)

Fragaria vesca (W).

Susceptible host species

• Chenopodium amaranticolor
• Chenopodium quinoa
• Cyamopsis tetragonoloba
• Fragaria chiloensis
• Fragaria vesca
• Fragaria virginiana
• Fragaria × ananassa
• Gomphrena globosa
• Potentilla adscherica
• Potentilla canadensis
• Potentilla sterilis

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (2/2)
• Leguminosae-Papilionoideae (1/1)
• Rosaceae (7/7)

Sources of host-range data

Frazier (1968); Converse (1987).

Purification method

Yoshikawa and Converse (1991).

Physical and biochemical properties

Particle morphology

Virions isometric; not enveloped; 37 nm in diameter; angular in profile; without a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations. Density 1.42 g cm^-3 in CsCl.

Biochemical properties

Genome consists of RNA; single-stranded (possibly). Total genome size 6.6 kb. Genome unipartite; largest (or only) genome part 6.6 kb.

Features of proteins

Virion protein(s) one; M_r 26000; coat protein.

Cytopathology

Virions found in leaves, mesophyll, epidermis and the phloem; in cytoplasm. Inclusions absent from infected cells.

Taxonomy and relationships

(ungrouped)

Comments and References

References

• Frazier, N.W. (1968). Pl. Dis. Reptr 52: 64.
• Frazier, N.W. (1974). Pl. Dis. Reptr 58: 28.
• Frazier, N.W. and Sylvester, E.S. (1960). Virology 12: 233.
• Kitajima, E.W., Betti, J.A. and Costa, A.S. (1971). Cienc. Cult. 23: 649.
• Mellor, F.C. and Krczal, H. (1987). In: Viruses Diseases of Small Fruits; ed. R.H. Converse. U.S. Dep. Agric. Hdbk No. 631, p, 10.
• Yoshikawa, N. and Converse, R.H. (1991). Ann. appl. Biol..

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: 20^th August 1996.' URL http://biology.anu.edu.au/Groups/MES/vide/

Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.