Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Maize white line mosaic virus

Index

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

Data collated by R.E. Gingery and R. Louie, 1985. Revised 1989 by R.E. Gingery.

Nomenclature

Synonyms

maize dwarf ringspot virus, possibly maize white line virus.

Acronym

MWLMV

ICTV decimal code

79.0.P.4.006

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Digitaria sanguinalis, Panicum dichotomiflorum, Setaria faberi, S. viridis - dark green mottle.
• Zea mays - mottle, mosaic and characteristic chlorotic white lines, small ears with few or no kernels.

Transmission

Virus not transmitted by mechanical inoculation; not transmitted by contact between plants; not transmitted by seed; not transmitted by pollen.

Geographical distribution

Spreads in France, Italy, and the USA.

Experimental host range

Several (3-9) families susceptible.

Diagnostically susceptible host species and symptoms

• Zea mays - mottle, mosaic, discrete chlorotic white lines, stunting.

Maintenance and propagation hosts

Zea mays.

Assay hosts (Local lesions or Whole plants)

Zea mays (W).

Susceptible host species

• Digitaria sanguinalis
• Panicum dichotomiflorum
• Setaria faberi
• Setaria viridis
• Zea mays

Families containing susceptible hosts

• Gramineae (5/5)

Sources of host-range data

Louie et al. (1982).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains many virions.

Purification method

De Zoeten et al. (1980); Louie et al. (1982).

Particle morphology

Virions isometric; not enveloped; 30-35 nm in diameter; rounded in profile, or angular in profile; with a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 117 S. Density 1.333 g cm^-3 in CsCl (unfixed), or 1.353 g cm^-3 in CsCl (when fixed in glutaraldehyde).

Biochemical properties

Virions contain 20.9 % nucleic acid; 79.1 % protein.

Genome consists of RNA; single-stranded; probably linear. Total genome size 1.3-1.6 kb. Genome unipartite; largest (or only) genome part 1.3-1.6 kb. Genomic nucleic acid isolated by de Zoeten et al. (1980). Base composition 30 % G; 19.7 % A; 26 % C; 24.3 % U.

Features of proteins

Virion protein(s) one; M_r 32000-35000. Method of preparation: de Zoeten et al. (1980).

Cytopathology

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

Taxonomy and relationships

(ungrouped)

Comments and References

General comments

Satellite-like virions are associated with this virus.

References

• Boothroyd, C.W. and Israel, H.W. (1980). Plant Dis. 64: 218.
• de Zoeten, G.A., Arny, D.C., Grau, C.R., Saad, S.M. and Gaard, G. (1980). Phytopathology 70: 1019.
• Gingery, R.E. and Louie, R. (1984). Phytopathology 74: 808.
• Gotlieb, A.R. and Liese, A.L. (1980). Phytopathology 70: 462.
• Lapierre, H., Moreau, J.C. and Molin, G. (1976). Poljopr. Znan. Smotra. Agric. Conspect. Sci. 39: 187.
• Louie, R., Gordon, D.T., Knoke, J.K., Gingery, R.E., Bradfute, O.E. and Lipps, P.E. (1982). Plant Dis. 66: 167.
• Louie, R., Gordon, D.T., Madden, L.V. and Knoke, J.K. (1983). Plant Dis. 67: 371.

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.