Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Poa semilatent hordeivirus

Index

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

Data collated by A.A. Brunt, 1992.

Nomenclature

Acronym

PSLV

Strains

mild and severe strains.

ICTV decimal code

32.0.1.0.005

Host range and symptoms

Natural host range and symptoms

Symptoms disappear soon after infection.
• Elymus trachycaulus, Poa palustris - probably symptomless infection or faint transient leaf chlorosis (but often occurs together with hordeum mosaic and/or oat necrotic mottle viruses in plants with conspicuous leaf chlorosis).

Transmission

Virus transmitted by mechanical inoculation; not transmitted by seed.

Geographical distribution

Spreads in Canada (Alberta).

Diagnostically susceptible host species and symptoms

• Avena sativa, Triticum aestivum - chlorotic leaf mottling and plant death.

Diagnostically insusceptible host species

Elytrigia repens, Agrostis palustris, Bromus inermis, Lolium perenne.

Maintenance and propagation hosts

Avena sativa, Poa palustris.

Assay hosts (Local lesions or Whole plants)

Avena sativa (W), Triticum aestivum (W).

Susceptible host species

• Avena sativa
• Elymus trachycaulus
• Hordeum vulgare
• Lolium multiflorum
• Phleum pratense
• Poa compressa
• Poa palustris
• Secale cereale
• Triticum aestivum
• Triticum durum
• Zea mays

Insusceptible host species

• Agrostis alba
• Agrostis palustris
• Agrostis tenuis
• Bromus inermis
• Elytrigia intermedia
• Elytrigia repens
• Lolium perenne

Families containing susceptible hosts

• Gramineae (11/18)

Families containing insusceptible hosts

• Gramineae (7/18)

Sources of host-range data

Slykhuis (1972).

Physical and biochemical properties

Properties of particles in sap

TIP: 67 °C. LIV: 120 days. DEP: log₁₀ minus 3. Leaf sap contains few virions.

Purification method

Lane (1974).

Particle morphology

Virions rod-shaped; not enveloped; usually straight; with a clear modal length; of 162 nm; 25 nm wide. Axial canal obvious. Basic helix obvious.

Biochemical properties

Genome consists of RNA; single-stranded. Total genome size 15.6 kb. Genome of four parts; largest (or only) genome part 4.5 kb; the 2nd largest 4 kb; the 3rd largest 3.6 kb; the 4th largest 3.5 kb. Genomic nucleic acid isolated by Lane (1974).

NCBI sequence data (Entrez search)

Sequence database accession code(s)

• M81486 Em(40)_vi:PSZBETACD Gb(84)_vi:PSZBETACD Poa semilatent virus beta genomic segment, 3´ proximal end. 12/92 795bp.
• M81487 Em(40)_vi:PSZGAMRNA Gb(84)_vi:PSZGAMRNAP Poa semilatent virus gamma genomic segment, 3´ terminal end. 12/92 1,519bp. 2 sequences.

Features of proteins

Virion protein(s) one; M_r 23000; and it is coat protein.

Taxonomy and relationships

Hordeivirus

Virus(es) with serologically related virions

Barley stripe mosaic and lychnis ringspot viruses.

Differences between type strain and others

Several that differ in pathogenicity have been described.

Additional comments on relationships

The genome of the virus does not cross-hybridize with those of barley stripe mosaic or lychnis ringspot viruses using cDNAs transcribed from them.

Comments and References

References

• Carroll, T.W. (1986). In: The Plant Viruses, Vol. 2, The Rod-Shaped Plant Viruses, p. 388; eds M.H.V. van Regenmortel and H. Fraenkel-Conrat. Plenum Press, New York.
• Hunter, B.G., Heaton, L.A., Bracker, C.E. and Jackson, A.O. (1986). Phytopathology 76: 322.
• Hunter, B.G., Smith, J., Fattouh, F. and Jackson, A.O. (1989). Intervirology 30: 18.
• Jackson, A.O., Hunter, B.G. and Gustafson, G.D. (1989). Ann. Rev. Phytopath. 27: 95.
• Lane, L.C. (1974). Virology 58: 323.
• Pólak, Z. and Slykhuis, J. (1972). Can. J. Bot. 50: 263.
• Slykhuis, J. (1972). Phytopathology 62: 508.

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.