Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Chloris striate mosaic monogeminivirus

Index

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

Data collated by R. Greber, 1986.

Nomenclature

Synonyms

Australian wheat striate mosaic virus.

Acronym

CSMV

Strains

Chloris (C) and Microlaena.

ICTV decimal code

29.0.1.0.003

Host range and symptoms

Natural host range and symptoms

• Gramineae including Chloris gayana, Ixophorus unisetus and Dactylis glomerata and cereals such as Triticum spp., Avena sativa, Hordeum vulgare, Zea mays - streaking or mosaic.

Transmission

Transmitted by a vector; an insect; Nesoclutha (obscura) pallida; Cicadellidae. Transmitted in a persistent manner. Virus possibly transmitted by seed.

Geographical distribution

Spreads in Australia.

Experimental host range

Few (<3) families susceptible. Experimentally infected plants mostly show chlorotic streaks.

Diagnostically susceptible host species and symptoms

• Chloris gayana, Hordeum vulgare - yellow or grey streaks.

Maintenance and propagation hosts

Chloris gayana - for maintaining cultures by vegetative propagation, the leaves are a good source of virus.

Assay hosts (Local lesions or Whole plants)

Chloris gayana (W) and the vector Nesoclutha pallida assayed by feeding on Chloris gayana (Grylls and Waterford, 1976; Francki et al., 1979).

Susceptible host species

• Avena sativa
• Chloris gayana
• Dactylis glomerata
• Eleusine coracana
• Hordeum vulgare
• Ixophorus unisetus
• Triticum aestivum
• Zea mays

Families containing susceptible hosts

• Gramineae (8/8)

Sources of host-range data

Grylls (1963).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains many virions. Electron microscopy: use UA not PTA-H.

Purification method

Francki et al. (1979).

Particle morphology

Virions geminate; 18 nm in diameter; 30 nm in length (Hatta and Francki, 1979).

Physical properties

One sedimenting component in purified preparations. Density 1.35 g cm^-3 in CsCl (after fixation in glutaraldehyde).

Biochemical properties

Virions contain 19 % nucleic acid.

Genome consists of DNA; single-stranded; circular. Total genome size 2.75 kb. Genome unipartite; largest (or only) genome part 2.75 kb.

NCBI sequence data (Entrez search)

Sequence database accession code(s)

• M20021 Em(40)_vi:GECHMGEN Gb(84)_vi:CHMGEN Chloris striate mosaic virus DNA, complete genome. 7/89 2,750bp. 1 sequence.

Features of proteins

Virion protein(s) one; M_r 28000; coat protein.

Cytopathology

Virions found in leaves, mesophyll, meristem and phloem (Francki et al., 1979); in nuclei; sometimes in the cytoplasm and cell vacuole (Francki et al., 1979).

Taxonomy and relationships

monogeminivirus: Geminiviridae

Virus(es) with serologically unrelated virions

Bean golden mosaic virus, cassava African mosaic virus (Francki et al., 1979, 1980).

Comments and References

References

• Derrick, K.S. and Brlansky, R.H. (1976). Phytopathology 66: 815.
• Francki, R.I.B. (1980). CMI/AAB Descr. Pl. Viruses No. 221, 4 pp.
• Francki, R.I.B., Hatta, T., Grylls, N.E. and Grivell, C.J. (1979). Ann. appl. Biol. 91: 51.
• Francki, R.I.B., Hatta, T., Boccardo, G. and Randles, J.W. (1980). Virology 101: 233.
• Grylls, N.E. (1963). Aust. J. agric. Res. 14: 143.
• Grylls, N.E. and Waterford, C.J. (1976). Aust. Pl. Path. Soc. Newsl. 5(Suppl.): 89.
• Hatta, T. and Francki, R.I.B. (1979). Virology 92: 428.

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.