Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Ullucus mild mottle tobamovirus

Index

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

Data collated by A.A.Brunt and S. Molyneux, 1986.

Nomenclature

Acronym

UMMV

ICTV decimal code

71.0.1.0.014

Host range and symptoms

Natural host range and symptoms

Symptoms disappear soon after infection.
• Ullucus tuberosus - plants also naturally infected with other viruses. Inoculated plants show mottling.

Transmission

Transmitted by means not involving a vector. Virus transmitted by mechanical inoculation; transmitted by grafting; transmitted by contact between plants.

Ecology and control

Studies reported by Brunt et al. (1982).

Geographical distribution

Spreads in Peru.

Experimental host range

Several (3-9) families susceptible.

Diagnostically susceptible host species and symptoms

• Datura metel, Nicotiana clevelandii, N. benthamiana - systemic chlorosis.
• Nicotiana glutinosa, N. megalosiphon, N. rustica, N. tabacum - chlorotic or necrotic local lesions; not systemic.
• Chenopodium capitatum - severe systemic leaf chlorosis.
• Chenopodium amaranticolor, C. quinoa - chlorotic rings or local lesions; not systemic.

Diagnostically insusceptible host species

Capsicum frutescens, Solanum tuberosum, Phaseolus vulgaris, Vicia faba, Vigna unguiculata.

Maintenance and propagation hosts

Nicotiana clevelandii and N. benthamiana.

Assay hosts (Local lesions or Whole plants)

Chenopodium quinoa (L), Chenopodium amaranticolor (L), Chenopodium murale (L), Nicotiana glutinosa (L).

Susceptible host species

• Amaranthus caudatus
• Chenopodium amaranticolor
• Chenopodium capitatum
• Chenopodium murale
• Chenopodium quinoa
• Cucumis sativus
• Datura metel
• Datura stramonium
• Gomphrena globosa
• Lycopersicon esculentum
• Montia perfoliata
• Nicandra physalodes
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana debneyi
• Nicotiana glutinosa
• Nicotiana megalosiphon
• Nicotiana rustica
• Nicotiana tabacum
• Petunia × hybrida
• Physalis floridana
• Tetragonia tetragonioides
• Ullucus tuberosus

Insusceptible host species

• Arachis hypogaea
• Brassica campestris ssp. pekinensis
• Capsicum frutescens
• Phaseolus vulgaris
• Pisum sativum
• Solanum tuberosum
• Trifolium incarnatum
• Vicia faba
• Vigna unguiculata

Families containing susceptible hosts

• Amaranthaceae (2/2)
• Basellaceae (1/1)
• Chenopodiaceae (4/4)
• Cucurbitaceae (1/1)
• Portulacaceae (1/1)
• Solanaceae (13/15)
• Tetragoniaceae (1/1)

Families containing insusceptible hosts

• Cruciferae (1/1)
• Leguminosae-Papilionoideae (6/6)
• Solanaceae (2/15)

Sources of host-range data

Brunt et al. (1982); Brunt (1986).

Physical and biochemical properties

Properties of particles in sap

TIP: 90-95 °C. DEP: log₁₀ minus 7. Leaf sap contains many virions.

Purification method

Brunt (1986).

Particle morphology

Virions rod-shaped; not enveloped; usually straight; with a clear modal length; of 300 nm; 18 nm wide. Axial canal obvious. Basic helix obvious; pitch of basic helix 2.4 nm.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 176 S. Density 1.32 g cm^-3 in CsCl (unfixed).

Biochemical properties

Virions contain 5 % nucleic acid; 95 % protein.

Genome consists of RNA; single-stranded. Total genome size 6.4 kb. Genome unipartite; largest (or only) genome part 6.4 kb.

Features of proteins

Virion protein(s) one; M_r 21000; coat protein. Amino acid sequence: Van Regenmortel and Brunt, in Brunt (1986).

Cytopathology

Virions found in all parts of the host plant; in cytoplasm.

Taxonomy and relationships

Tobamovirus

Virus(es) with serologically related virions

Ribgrass mosaic virus.

Virus(es) with serologically unrelated virions

Cucumber green mottle mosaic, frangipani mosaic, odontoglossum ringspot and sunn-hemp mosaic viruses (Brunt et al., 1982; Duarte, 1986).

Comments and References

References

• Brunt, A.A., Phillips, S., Jones, R.A.C. and Kenten, R.H. (1982). Ann. appl. Biol. 101: 65.
• Brunt, A.A. (1986). In: The Plant Viruses Vol. 2, The Rod-Shaped Viruses, p. 283; eds M.H.V. van Regenmortel and H. Fraenkel-Conrat. Plenum Press, New York.
• Duarte, I.M.N. (1986). M.Sc. Thesis, 98 pp. University of Reading, U.K.

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.