Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Cucumber soil-borne carmovirus

Index

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

Data collated by K.M. Makkouk, 1987.

Nomenclature

Acronym

CSBV (CuSBV)

ICTV decimal code

74.0.2.0.005

Host range and symptoms

Natural host range and symptoms

• Cucumis sativus - present in roots only, no leaf symptoms.

Transmission

Virus transmitted by mechanical inoculation.

Geographical distribution

Found, but with no evidence of spread, in Lebanon.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Chenopodium quinoa, C. amaranticolor, Datura stramonium, Gomphrena globosa, Nicotiana glutinosa, Beta vulgaris, Vigna unguiculata Black eye No. 5 - local lesions not systemic.

Diagnostically insusceptible host species

Physalis floridana, Vicia faba, Spinacia oleracea, Capsicum annuum cv. Yolo Wonder, Solanum melongena cv. Black Beauty, Vigna unguiculata cv. California Black Eye No. 5.

Assay hosts (Local lesions or Whole plants)

Chenopodium quinoa (L), C. amaranticolor (L), Datura stramonium (L), Gomphrena globosa (L), Nicotiana glutinosa (L), Beta vulgaris (L), Vigna unguiculata cv. Black Eye No. 5 (L).

Susceptible host species

• Beta vulgaris
• Chenopodium amaranticolor
• Chenopodium quinoa
• Cucumis sativus (root only)
• Datura stramonium
• Gomphrena globosa
• Nicotiana glutinosa
• Vigna unguiculata (cv. Black eye No. 5)

Insusceptible host species

• Capsicum annuum (cv. Yolo Wonder)
• Physalis floridana
• Solanum melongena (cv. Black Beauty)
• Spinacia oleracea
• Vicia faba
• Vigna unguiculata (cv. California Black Eye No. 5)

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (3/4)
• Cucurbitaceae (1/1)
• Leguminosae-Papilionoideae (1/2)
• Solanaceae (2/5)

Families containing insusceptible hosts

• Chenopodiaceae (1/4)
• Leguminosae-Papilionoideae (2/2)
• Solanaceae (3/5)

Sources of host-range data

Koenig et al. (1983).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains many virions.

Purification method

Koenig et al. (1983).

Particle morphology

Virions isometric; not enveloped; 31 nm in diameter; rounded in profile and angular in profile (occasionally); with a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 120 S. Density 1.343 g cm^-3 in CsCl.

Biochemical properties

Genome consists of RNA; single-stranded. Total genome size 5.25 kb. Genome unipartite; largest (or only) genome part 4.75 kb (also a satellite RNA of 0.5 kb). Genomic nucleic acid isolated by Koenig et al. (1983). Base composition 32 % G; 23 % A; 22 % C; 23 % U. Infectivity retained when deproteinised with phenol or detergent.

Features of proteins

Virion protein(s) one; M_r 41400; coat protein. Method of preparation: Koenig et al. (1983).

Replication

Acts as helper for a satellite RNA.

Cytopathology

Virions found in epidermis; in cytoplasm. Inclusions present in infected cells; are unusual in shape; thin fibrils about 9 nm thick; they do not contain virions. Other cellular changes: small vesicles with a single membrane and containing fibrils resembling nucleic acid.

Taxonomy and relationships

Carmovirus: Tombusviridae

Comments and References

References

• Koenig, R., Lesemann, D.-E., Huth, W. and Makkouk, K.M. (1983). Phytopathology 73: 515.

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.