Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Euphorbia mosaic bigeminivirus

Index

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

Data collated by A.A. Brunt, 1990.

Nomenclature

Acronym

EuMV

ICTV decimal code

29.0.3.0.017

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Euphorbia heterophylla - golden mosaic and leaf malformation.

Transmission

Transmitted by a vector; an insect; Bemisia tabaci (nymphs and adults); Aleyrodidae. Transmitted in a persistent manner. Virus transmitted by mechanical inoculation; transmitted by grafting; not transmitted by contact between plants; not transmitted by seed.

Geographical distribution

Spreads in Brazil, Puerto Rico, and the USA (Florida), Venezuela.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Euphorbia heterophylla - chlorosis.
• Datura stramonium - chlorotic local lesions and systemic chlorosis.
• Datura metel - local and systemic chlorotic spotting.
• Nicotiana benthamiana, N. glutinosa - systemic crinkling.

Diagnostically insusceptible host species

Chenopodium quinoa, Glycine max, Gomphrena globosa, Nicandra physalodes, Nicotiana tabacum.

Maintenance and propagation hosts

• Datura stramonium, Nicotiana benthamiana, N. glutinosa.

Assay hosts (Local lesions or Whole plants)

Datura stramonium (W), Nicotiana benthamiana (W), N. glutinosa (W).

Susceptible host species

• Datura metel
• Datura stramonium
• Euphorbia heterophylla
• Fagopyrum esculentum
• Nicandra physalodes
• Nicotiana benthamiana
• Nicotiana glutinosa

Insusceptible host species

• Chenopodium amaranticolor
• Chenopodium quinoa
• Glycine max
• Gomphrena globosa
• Lycopersicon esculentum
• Lycopersicon pimpinellifolium
• Nicandra physalodes
• Nicotiana debneyi
• Nicotiana megalosiphon
• Nicotiana tabacum
• Phaseolus lunatus
• Phaseolus vulgaris

Families containing susceptible hosts

• Euphorbiaceae (1/1)
• Polygonaceae (1/1)
• Solanaceae (5/10)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (2/2)
• Leguminosae-Papilionoideae (3/3)
• Solanaceae (6/10)

Sources of host-range data

Costa and Bennett (1950); Jaramillo and Lastra (1986).

Physical and biochemical properties

Properties of particles in sap

TIP: in Nicotiana benthamiana sap 44-46 °C. LIV: 6-7 days. DEP: log₁₀ minus 1. Leaf sap contains few virions.

Purification method

Jaramillo and Lastra (1986).

Particle morphology

Virions geminate; not enveloped; 18 nm in diameter; dimers 32 nm in length.

Biochemical properties

Genome consists of DNA; single-stranded. Total genome size 5.57 kb. Genome of two parts; largest (or only) genome part the larger 2.87 kb; the 2nd largest 2.7 kb. Genomic nucleic acid isolated by Jaramillo and Lastra (1986).

Features of proteins

Virion protein(s) one; M_r 32000; coat protein. Method of preparation: Jaramillo and Lastra (1986).

Cytopathology

Virions found in leaves, mesophyll and epidermis; in nuclei. Inclusions present in infected cells; are unusual in shape; fibrillar bodies in nuclei; they do not contain virions. Other cellular changes: unusual for a geminivirus, cytoplasmic inclusions.

Taxonomy and relationships

bigeminivirus: Geminiviridae

Virus(es) with serologically unrelated virions

Bean golden mosaic, African cassava mosaic, tomato golden mosaic and lima bean golden mosaic geminiviruses.

Differences between type strain and others

The Brazilian isolate is more stable than the Venezuelan isolate.

Comments and References

References

• Bird, J. and Maramorosch, K. (1978). Adv. Virus Res. 22: 55.
• Bird, J., Sanchez, J., Rodriguez, R.L. and Julia, F.J. (1975). In: Tropical Diseases of Legumes, p. 325; eds J. Bird and K. Maramorosch. Academic Press, New York.
• Costa, A.S. (1965). FAO Pl. Prot. Bull. 13: 1.
• Costa, A.S. (1976). Ann. Rev. Phytopath. 16: 429.
• Costa, A.S. and Bennett, C.W. (1950). Phytopathology 40: 266.
• Costa, A.S. and Carvalho, A.M.B. (1960). Phytopath. Z. 38: 129.
• Debrot, E.A. and Centeno, F. (1983). Agron. trop. 33:.
• Jaramillo, S. and Lastra, R. (1986). J. Phytopath. 115: 193.
• Kim, K.S. and Flores, E.M. (1979). Phytopathology 69: 980.
• Kim, K.S. and Fulton, R.W. (1984). Phytopathology 74: 236.
• Matys, J.C., Silva, D.M., Oliveira, A.R. and Costa, A.S. (1976). Fitopatol. (Lima) 11: 22.

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.