Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Burdock yellow mosaic (?) potexvirus

Index

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

Data collated by L.W. Stobbs, 1991.

Nomenclature

Strains

1 isolate.

ICTV decimal code

56.0.1.T.D.01

Host range and symptoms

Natural host range and symptoms

Symptoms persist. Symptoms bright yellow mosaic and stunting.
• Arctium minus - stunting and bright yellow mosaic. Symptoms more pronounced in plants growing in sunny positions than those in full shade.

Transmission

Transmitted by means not involving a vector (possible). Virus transmitted by mechanical inoculation; transmitted by contact between plants; not transmitted by seed.

Geographical distribution

Spreads in Canada.

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show local lesions, latent and systemic infection.

Diagnostically susceptible host species and symptoms

• Chenopodium amaranticolor, Gomphrena globosa, Nicotiana tabacum - local lesions.
• Chenopodium murale - latent infection.
• C. quinoa - systemic infection.

Maintenance and propagation hosts

Arctium minus, Chenopodium quinoa for propagation.

Assay hosts (Local lesions or Whole plants)

Chenopodium amaranticolor (L), Gomphrena globosa (L), Nicotiana tabacum cv. Harrow Velvet (L).

Susceptible host species

• Arctium minus
• Chenopodium amaranticolor
• Chenopodium murale
• Chenopodium quinoa
• Gomphrena globosa
• Nicotiana tabacum

Insusceptible host species

• Beta vulgaris
• Brassica campestris ssp. rapa
• Capsicum annuum
• Cucumis sativus
• Datura stramonium
• Lycopersicon esculentum
• Nicotiana clevelandii
• Nicotiana glutinosa
• Nicotiana rustica
• Petunia × hybrida
• Phaseolus vulgaris
• Spinacia oleracea
• Vigna unguiculata
• Zinnia elegans

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (3/5)
• Compositae (1/2)
• Solanaceae (1/8)

Families containing insusceptible hosts

• Chenopodiaceae (2/5)
• Compositae (1/2)
• Cruciferae (1/1)
• Cucurbitaceae (1/1)
• Leguminosae-Papilionoideae (2/2)
• Solanaceae (7/8)

Physical and biochemical properties

Properties of particles in sap

TIP: 58 °C. LIV: 91 days. DEP: log₁₀ minus 6. Leaf sap contains many virions.

Purification method

Stobbs and van Schagen (1988).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 525-530 nm; 13 nm wide. Axial canal obvious.

Physical properties

One sedimenting component in purified preparations. Density 1.304 g cm^-3 in CsCl. Isoelectric point pH 4-4.5. A₂₆₀/A₂₈₀ ratio 1.22.

Biochemical properties

Genome consists of RNA; single-stranded.

Features of proteins

Virion protein(s) two; M_r of the larger 28300. M_r of 2nd largest 30500. Method of preparation: Allen and Dias (1977).

Cytopathology

Virions found in all parts of the host plant; in cytoplasm. Inclusions absent from infected cells.

Taxonomy and relationships

Possible Potexvirus

Virus(es) with serologically related virions

Clover yellow mosaic and potato aucuba mosaic viruses.

Best tests for diagnosis

Symptoms in Arctium minus are diagnostic for this virus.

Comments and References

References

• Allen, W.R. and Dias, H.F. (1977). Can. J. Bot. 55: 1028.
• Stobbs, L.W. and van Schagen, J.G. (1988). Plant Dis. 72: 314.

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.