Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Mirabilis mosaic caulimovirus

Index

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

Data collated by R. Hull, 1987.

Nomenclature

Acronym

MiMV

ICTV decimal code

15.0.1.0.008

Host range and symptoms

Natural host range and symptoms

Symptoms persist. Symptoms systemic mosaics, mottles, ringspots or necrosis.
• Mirabilis nyctaginea - chlorotic vein banding of tip leaves and interveinal chlorosis of older leaves.

Transmission

Transmitted by a vector; an insect; Myzus persicae; Aphididae. Transmitted in a semi-persistent manner. Virus lost by the vector when it moults; does not multiply in the vector; not transmitted congenitally to the progeny of the vector; transmitted by mechanical inoculation; not transmitted by contact between plants; not transmitted by seed; not transmitted by pollen.

Geographical distribution

Spreads in the USA.

Diagnostically susceptible host species and symptoms

• Mirabilis jalapa - chlorotic vein banding of tip leaves and interveinal chlorosis of older leaves.

Maintenance and propagation hosts

Mirabilis jalapa.

Susceptible host species

• Mirabilis jalapa
• Mirabilis nyctaginea

Families containing susceptible hosts

• Nyctaginaceae (2/2)

Sources of host-range data

Brunt and Kitajima (1973).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains many virions.

Purification method

Donson and Hull (1983); Richins and Shepherd (1983).

Particle morphology

Virions isometric; not enveloped; 50 nm in diameter; rounded in profile; without a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 210-254 S. Density 1.32 g cm^-3 in CsCl.

Biochemical properties

Virions contain 17 % nucleic acid; 83 % protein; 0 % lipid.

Genome consists of DNA; double-stranded; circular. Total genome size 7.8 kb (pairs). Genome unipartite; largest (or only) genome part 7.8 kb (pairs). Genomic nucleic acid isolated by Donson and Hull (1983); Richins and Shepherd (1983). Infectivity retained when deproteinised with proteases; retained when deproteinised with phenol or detergent. Poly A region absent, or present; present in full length cRNA.

Features of the genome

Non-genomic nucleic acid not found in the virions.

Features of proteins

Virion protein(s) one; M_r 32000; coat protein. Method of preparation: Brunt and Kitajima (1973).

Replication

Genome replicates presumably in nuclei and in cytoplasm. Replication does not depend on a helper virus.

Cytopathology

Virions found in mesophyll and epidermis; in cytoplasm. Inclusions present in infected cells; are viroplasms; they contain virions.

Taxonomy and relationships

Caulimovirus

Virus(es) with serologically unrelated virions

Dahlia mosaic, cauliflower mosaic and carnation etched ring viruses.

Comments and References

References

• Brunt, A.A. and Kitajima, E.W. (1973). Phytopath. Z. 76: 265.
• Donson, J. and Hull, R. (1983). J. gen Virol. 64: 2281.
• Richins, R.D. and Shepherd, R.J. (1983). Virology 124: 208.

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.