Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Paspalum striate mosaic monogeminivirus

Index

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

Data collated by R.S. Greber, 1987.

Nomenclature

Synonyms

paspalum geminivirus.

Acronym

PSMV

Strains

Paspalum (P) and Bromus (BC), also bromus striate virus.

ICTV decimal code

29.0.1.0.009

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Paspalum conjugatum, P. dilatatum - striations, then blotchy mottle.
• P. scrobiculatum - fine striations and notching of leaf margins, then blotchy mottle.
• Bromus catharticus - fine chlorotic striations.

Transmission

Transmitted by a vector; an insect; Nesoclutha pallida (obscura); Cicadellidae. Transmitted in a semi-persistent manner. Virus retained when the vector moults; does not multiply in the vector; not transmitted congenitally to the progeny of the vector; transmitted by mechanical inoculation (only to the vector); not transmitted by contact between plants.

Geographical distribution

Spreads in Australia (New South Wales and Queensland).

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Avena sativa - striations, stunting, blotchy mottle.
• Chloris gayana - stunting, leaf margin notching.
• Dactyloctenium aegyptium - striations, curling.
• Hordeum vulgare - striations, stunting, blotchy mottle.
• Leptochloa filiformis - severe stunting, curling.
• Paspalum dilatatum, P. conjugatum, P. scrobiculatum - striations, mottling.
• Triticum aestivum - stunting, leaf notching, blotchy mottle.
• Zea mays (sweet corn) - pale striations.

Diagnostically insusceptible host species

Bromus catharticus, Microlaena stipoides.

Maintenance and propagation hosts

Triticum aestivum cv. Gatcher, for propagation, Paspalum dilatatum for maintenance.

Assay hosts (Local lesions or Whole plants)

Triticum aestivum cv. Gatcher (W), Paspalum dilatatum (W).

Susceptible host species

• Avena sativa
• Bromus catharticus
• Chloris gayana
• Dactyloctenium aegyptium
• Hordeum vulgare
• Leptochloa filiformis
• Paspalum conjugatum
• Paspalum dilatatum
• Paspalum scrobiculatum
• Triticum aestivum
• Zea mays

Insusceptible host species

• Bromus catharticus
• Microlaena stipoides

Families containing susceptible hosts

• Gramineae (11/12)

Families containing insusceptible hosts

• Gramineae (2/12)

Physical and biochemical properties

Particle morphology

Virions geminate; 18 nm in diameter; 30 nm in length; angular in profile; without a conspicuous capsomere arrangement.

Biochemical properties

Genome consists of DNA; single-stranded; circular.

Cytopathology

Virions found in mesophyll and vascular parenchyma; in nuclei. Inclusions present in infected cells; are crystals in the nucleus; they contain virions.

Taxonomy and relationships

monogeminivirus: Geminiviridae

Virus(es) with serologically unrelated virions

Chloris striate mosaic, digitaria streak and maize streak viruses.

Best tests for diagnosis

Readily infects Paspalum dilatatum and is vector specific.

Comments and References

References

• Francki, R.I.B., Milne, R.G. and Hatta, T. (1985). In: Atlas of Plant Viruses Vol. I, 222 pp. C.R.C. Press Inc, Boca Raton.
• Grylls, N.E. (1963). Aust. J. agric. Res. 14: 143.
• Grylls, N.E. (1979). In: Leafhopper, Vectors and Plant Disease Agents, p. 179; ed. K. Maramorosch. Academic Press, New York.
• Greber, R.S. (1984). In: Current Topics in Vector Research, Vol. 2, p. 141; ed. K.F. Harris. Praeger Scientific, New York.
• Piner, M.S., Markham, P.G., Rybicki, E. and Greber, R.S. (1992). Plant Path. 41: 618.
• Slykhuis, J.T. (1962). F.A.O. Pl. Prot. Bull. 10: 1.

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.