Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Sweet potato sunken vein (?) closterovirus

Index

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

Data collated by A.A. Brunt and G. Loebenstein, 1995.

Nomenclature

Synonyms

possibly sweet potato whitefly transmitted agent (Schaefers and Terry, 1976; Rossel and Thottapilly, 1985).

ICTV decimal code

17.0.1.T.DE.5

Host range and symptoms

Natural host range and symptoms

Ipomoea batatas - symptomless or mild vein yellowing, some sunken secondary veins on adaxial leaf surfaces and swollen veins on abaxial surfaces. Very severe diseases occur when the virus is in mixed infections with sweet potato feathery mottle virus.

Transmission

Transmitted by a vector; an insect; Bemisia tabaci; Aleyrodidae. Transmitted in a semi-persistent manner. Virus not transmitted by mechanical inoculation; transmitted by grafting; not transmitted by contact between plants.

Geographical distribution

Spreads in Israel and Nigeria (possibly).

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

Ipomoea hederacea, I. setosa, I. trichocarpa, I. trifida - leaf rolling and cupping.

Diagnostically insusceptible host species

Brassica campestris ssp. pekinensis, Chenopodium murale, C. quinoa, Cucumis sativus, Datura stramonium, Petunia × hybrida, Physalis floridana.

Susceptible host species

• Ipomoea batatas
• Ipomoea hederacea
• Ipomoea nil
• Ipomoea setosa
• Ipomoea trichocarpa
• Ipomoea trifida
• Nicotiana benthamiana
• Nicotiana clevelandii

Insusceptible host species

• Brassica campestris ssp. pekinensis
• Chenopodium murale
• Chenopodium quinoa
• Cucumis sativus
• Datura stramonium
• Daucus carota
• Helianthus annuus
• Lactuca sativa
• Lycopersicon esculentum
• Petunia × hybrida
• Physalis floridana
• Raphanus sativus
• Zinnia elegans

Families containing susceptible hosts

• Convolvulaceae (6/6)
• Solanaceae (2/6)

Families containing insusceptible hosts

• Chenopodiaceae (2/2)
• Compositae (3/3)
• Cruciferae (2/2)
• Cucurbitaceae (1/1)
• Solanaceae (4/6)
• Umbelliferae (1/1)

Purification method

Cohen et al. (1992).

Physical and biochemical properties

Particle morphology

Virions filamentous; usually flexuous; of 850 nm; 12 nm wide.

NCBI sequence data (Entrez search)

Sequence database accession code(s)

• X80995 Em(43)_vi:Spsvvcp Gb(89)_vi:Spsvvcp Sweet potato sunken vein virus genomic RNA for coat protein. 4/95 1,182bp.

Features of the genome

3 virus specified dsRNA species found in infected cells. Size of largest virus specified dsRNA 10.5 kbp; 2nd largest 7 kbp; 3rd largest 5 kbp.

Features of proteins

Virion protein(s) one; M_r 34000; coat protein.

Cytopathology

Other cellular changes: phloem cells have fibril-containing vesicles.

Taxonomy and relationships

Possible Closterovirus

Virus(es) with serologically unrelated virions

Lettuce infectious yellows virus.

Comments and References

General comments

The whitefly-transmitted component of the sweet potato virus disease complex occurring in Nigeria has properties very similar to those of sweet potato sunken vein virus; the genome of the former has also been shown to be of 9 kb.

References

• Cohen, J. and Loebenstein, G. (1991) Plant Dis. 75: 291.
• Cohen, J., Frank, A., Vetten, H.J., Lesemann, D.-E. and Loebenstein, G. (1992). Ann. appl. Biol. 121: 257.
• Rossel, H.W. and Thottappilly, G. (1985). Virus Diseases of Important Food Crops in Tropical Africa, pp. 10-13. IITA, Ibadan, Nigeria.
• Schaefers, G.A. and Terry, E.R. (1976). Phytopathology 66: 642.
• Winter, S., Purac, A., Leggett, F., Frison, E.A., Rossel, H.W. and Hamilton, R.I. (1992). Phytopathology 82: 869.

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.