Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Sweet potato caulimovirus

Index

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

Data collated by A.A Brunt, 1986; F. Nienhaus, 1987.

Nomenclature

ICTV decimal code

15.0.1.T.DE.1

Host range and symptoms

Natural host range and symptoms

• Ipomoea batatas - no conspicuous symptoms.

Transmission

Virus not transmitted by mechanical inoculation; transmitted by grafting; not transmitted by contact between plants; not transmitted by seed.

Geographical distribution

Found, but with no evidence of spread, in the U.S.A., Puerto Rico, New Zealand, Kenya, Papua New Guinea, Solomon Islands, Australia, Tonga and Madeira.

Diagnostically susceptible host species and symptoms

• Ipomoea setosa - chlorotic veinal flecks and/or circular interveinal chlorotic spots.

Diagnostically insusceptible host species

Nicotiana clevelandii, N. benthamiana, Chenopodium quinoa, Gomphrena globosa, Phaseolus vulgaris.

Maintenance and propagation hosts

Ipomoea setosa.

Susceptible host species

• Ipomoea batatas
• Ipomoea setosa

Insusceptible host species

• Chenopodium quinoa
• Gomphrena globosa
• Nicotiana benthamiana
• Nicotiana clevelandii
• Phaseolus vulgaris

Families containing susceptible hosts

• Convolvulaceae (2/2)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (1/1)
• Leguminosae-Papilionoideae (1/1)
• Solanaceae (2/2)

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions.

Particle morphology

Virions isometric; 50 nm in diameter; rounded in profile; without a conspicuous capsomere arrangement.

Biochemical properties

Genome consists of DNA; double-stranded.

Features of proteins

Virion protein(s) one (major); M_r 42000-44000.

Cytopathology

Virions found in vascular parenchyma; in cytoplasm. Inclusions present in infected cells; are unusual in shape; ovoid and up to 4 mm in diameter with a large central lacuna and usually several smaller peripheral lacunae; they do not contain virions. Other cellular changes: vascular parenchyma cells, which protrude into and sometimes completely occlude, adjacent xylem vessels.

Taxonomy and relationships

Probable Caulimovirus

Virus(es) with serologically unrelated virions

Cauliflower mosaic, dahlia mosaic, carnation etched ring and soybean chlorotic mottle viruses.

Comments and References

References

• Atkey, P.T. and Brunt, A.A. (1987). J. Phytopath. 118: 370.

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.