Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Dioscorea green banding mosaic potyvirus

Index

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

Data collated by A. Porth and F. Nienhaus, 1986.

Nomenclature

Strains

Nigerian yam virus.

ICTV decimal code

57.0.1.0.075

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Dioscorea rotundata - chlorotic flecks, greenbanding, and leaf malformation.

Transmission

Transmitted by a vector; an insect; Aphis faba and Myzus persicae; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation.

Geographical distribution

Spreads in the African region (in the west); Nigeria and Togo.

Experimental host range

Several (3-9) families susceptible.

Diagnostically susceptible host species and symptoms

• Nicotiana benthamiana - chlorotic ringspots.

Maintenance and propagation hosts

Nicotiana benthamiana.

Susceptible host species

• Chenopodium amaranticolor
• Chenopodium quinoa
• Dioscorea rotundata
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana occidentalis

Insusceptible host species

• Celosia argentea
• Chenopodium album
• Chenopodium ambrosioides
• Chenopodium foliosum
• Gossypium hirsutum
• Nicotiana megalosiphon
• Nicotiana tabacum
• Sorghum bicolor

Families containing susceptible hosts

• Chenopodiaceae (2/5)
• Dioscoreaceae (1/1)
• Solanaceae (3/5)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (3/5)
• Gramineae (1/1)
• Malvaceae (1/1)
• Solanaceae (2/5)

Purification method

Lisa et al. (1981); Koenig et al. (1973).

Physical and biochemical properties

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 732 nm (when stained with PTA-Na), or 769 nm (when stained with UA); 13-14 nm wide.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 156 S (»1). Density 1.336 g cm^-3 in CsCl.

Biochemical properties

Virions contain 5.4 % nucleic acid.

Genome consists of RNA; single-stranded. Total genome size 10.4 kb. Genome unipartite; largest (or only) genome part 10.4 kb. Genomic nucleic acid isolated by Hull and Lane (1973).

NCBI sequence data (Entrez search)

Features of proteins

Virion protein(s) one; M_r 36000. Method of preparation: Laemmli and Favre (1973).

Cytopathology

Virions found in epidermis; in cytoplasm. Inclusions present in infected cells; are pinwheels and unusual in shape; and laminated aggregates; they do not contain virions. Other cellular changes: aggregated mitochondria, deformed chloroplasts and tubular bundles containing virions.

Taxonomy and relationships

Potyvirus: Potyviridae

Virus(es) with serologically related virions

Yam mosaic virus.

Virus(es) with serologically unrelated virions

Beet mosaic and dioscorea alata ring mottle potyviruses.

Comments and References

References

• Hull, R. and Lane, L.C. (1973). Virology 55: 1.
• Koenig, R., Lesemann, D.E., Brunt, A.A. and Kühne, H. (1973). Intervirology 1: 348.
• Laemmli, U.K. and Favre, M. (1973). J. mol. Biol. 80: 575.
• Lisa, V., Boccardo, G., D'Agostino, G., Dellavalle, G. and D'Aquilio, M. (1981). Phytopathology 71: 667.
• Porth, A. (1986). Ph.D. Thesis, Univ. Bonn, Federal Republic of Germany.
• Reckhaus, P. (1979). Z. PflKrankh. PflPath. PflSchutz. 86: 763.
• Reckhaus, P. (1980). Ph.D. Thesis, Univ. Bonn, Federal Republic of Germany, pp 103.
• Reckhaus, P. and Nienhaus, F. (1981). Z. PflKrankh. PflPath. PflSchutz. 88: 492.

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.