Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Cassava Ivorian bacilliform ourmiavirus

Index

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

Data collated by A.A. Brunt, 1990. Revised 1992.

Nomenclature

ICTV decimal code

79.0.P.4.DE.1

Host range and symptoms

Natural host range and symptoms

• Manihot esculenta - symptomless.

Transmission

Not transmitted by Myzus persicae. Virus transmitted by mechanical inoculation.

Geographical distribution

Spreads in Cote d'Ivoire.

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show systemic chlorosis.

Diagnostically susceptible host species and symptoms

• Chenopodium amaranticolor - slight distortion of young systemically infected leaves.
• Chenopodium murale, C. quinoa - chlorotic or necrotic local lesions; systemic necrosis.
• Gomphrena globosa, Tetragonia tetragonioides - chlorotic or necrotic local lesions; symptomless systemic infection.
• Nicotiana benthamiana - symptomless or faint systemic mottle.
• Nicotiana clevelandii, N. rustica, N. tabacum cv. Samsun,
• Phaseolus vulgaris, Senecio cruentus - symptomless systemic infection.

Diagnostically insusceptible host species

Cucumis sativus, Datura stramonium, Nicotiana debneyi, Physalis floridana, Vigna unguiculata.

Maintenance and propagation hosts

Chenopodium quinoa.

Assay hosts (Local lesions or Whole plants)

Chenopodium murale (L), C. amaranticolor (W), C. quinoa (W).

Susceptible host species

• Chenopodium amaranticolor
• Chenopodium murale
• Chenopodium quinoa
• Gomphrena globosa
• Manihot esculenta
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana rustica
• Nicotiana tabacum
• Petunia × hybrida
• Phaseolus vulgaris
• Senecio cruentus
• Tetragonia tetragonioides

Insusceptible host species

• Apium graveolens
• Brassica campestris ssp. rapa
• Catharanthus roseus
• Coriandrum sativum
• Cucumis sativus
• Datura stramonium
• Daucus carota
• Lactuca sativa
• Lycopersicon chilense
• Lycopersicon esculentum
• Nicotiana debneyi
• Pastinaca sativa
• Physalis floridana
• Pisum sativum
• Vicia faba
• Vigna unguiculata

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (3/3)
• Compositae (1/2)
• Euphorbiaceae (1/1)
• Leguminosae-Papilionoideae (1/4)
• Solanaceae (5/10)
• Tetragoniaceae (1/1)

Families containing insusceptible hosts

• Apocynaceae (1/1)
• Compositae (1/2)
• Cruciferae (1/1)
• Cucurbitaceae (1/1)
• Leguminosae-Papilionoideae (3/4)
• Solanaceae (5/10)
• Umbelliferae (4/4)

Comments on host-range

Additional Hosts: species of the Aizoaceae, Amaranthaceae, Chenopodiaceae, Compositae, Leguminosae, Solanaceae.

Sources of host-range data

Aiton et al. (1988).

Physical and biochemical properties

Properties of particles in sap

TIP: 55 °C. DEP: log₁₀ minus 3.

Purification method

Fargette et al. (1991).

Particle morphology

Virions bacilliform; not enveloped; 42 nm in length, or 49 nm in length, or 76 nm in length; 18 nm wide.

Physical properties

Three sedimenting components in purified preparations to four sedimenting components in purified preparations.

Biochemical properties

Virions contain 25 % nucleic acid; 75 % protein; 0 % lipid.

Genome consists of RNA; single-stranded. Total genome size 9.7 kb. Genome of three parts; largest (or only) genome part 3.94 kb; the 2nd largest 3.03 kb; the 3rd largest 2.73 kb.

Features of proteins

Virion protein(s) one; M_r 22000; coat protein.

Taxonomy and relationships

ourmiavirus

Virus(es) with serologically unrelated virions

Alfalfa mosaic alfamovirus.

Comments and References

References

• Aiton, M.M., Roberts, I.M. and Harrison, B.D. (1988). Rep. Scottish Crop Res. Inst. 1987, p. 191.
• Fargette, D., Roberts, I.M. and Harrison, B.D. (1989). Rep. Scottish Crop Res. Inst. for 1988, p. 179.
• Fargette, D., Roberts, I.M. and Harrison, B.D. (1991). Ann. appl. Biol. 119: 303.

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.