Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Parietaria mottle ilarvirus

Index

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

Data collated by P. Caciagli, 1991.

Nomenclature

Acronym

PMoV

ICTV decimal code

10.0.2.10.01

Host range and symptoms

Natural host range and symptoms

Symptoms vary seasonally. Symptoms mosaic or mottling.
• Parietaria officinalis - bright yellow mosaic or mottling.

Transmission

Virus transmitted by mechanical inoculation; transmitted by grafting.

Geographical distribution

Spreads in Italy.

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show chlorotic local lesions and then mottle or leafroll in species of the Chenopodiaceae and necrotic local lesions and necrotic patching in species of Solanaceae.

Diagnostically susceptible host species and symptoms

• Chenopodium album - local lesions and systemic mottle.
• Chenopodium amaranticolor - local lesions and systemic leafroll.
• Chenopodium quinoa, Spinacia oleracea - systemic mottle and leaf malformation.
• Lycopersicon esculentum - mosaic, necrosis.
• Nicotiana clevelandii - chlorosis, rosetting and mottle.
• Nicotiana megalosiphon - leaf malformation.
• Nicotiana tabacum cv. Xanthi - necrotic etching; systemic.
• Nicotiana tabacum cv. White Burley - local lesions.
• Ocimum basilicum - necrotic etching.
• Tetragonia tetragonioides - latent.

Diagnostically insusceptible host species

Amaranthus caudatus, Cucumis sativus, Cyamopsis tetragonoloba, Momordica balsamina, Nicotiana glutinosa.

Maintenance and propagation hosts

Chenopodium amaranticolor, C. quinoa.

Assay hosts (Local lesions or Whole plants)

Chenopodium murale (L), C. quinoa (W), Phaseolus vulgaris (L), Vigna unguiculata cv. Black (W).

Susceptible host species

• Chenopodium album
• Chenopodium amaranticolor
• Chenopodium murale
• Chenopodium quinoa
• Lycopersicon esculentum
• Nicotiana clevelandii
• Nicotiana megalosiphon
• Nicotiana tabacum
• Ocimum basilicum
• Parietaria officinalis
• Petunia × hybrida
• Phaseolus vulgaris
• Spinacia oleracea
• Tetragonia tetragonioides
• Vigna unguiculata (cv. Black)
• Vigna unguiculata ssp. sesquipedalis

Insusceptible host species

• Amaranthus caudatus
• Beta vulgaris
• Capsicum annuum
• Cassia occidentalis
• Catharanthus roseus
• Cucumis sativus
• Cucurbita pepo
• Cyamopsis tetragonoloba
• Gomphrena globosa
• Momordica balsamina
• Nicotiana glutinosa
• Nicotiana tabacum
• Petroselinum crispum
• Physalis floridana
• Saponaria vaccaria
• Zinnia elegans

Families containing susceptible hosts

• Chenopodiaceae (5/6)
• Labiatae (1/1)
• Leguminosae-Papilionoideae (3/4)
• Solanaceae (5/8)
• Tetragoniaceae (1/1)
• Urticaceae (1/1)

Families containing insusceptible hosts

• Amaranthaceae (2/2)
• Apocynaceae (1/1)
• Caryophyllaceae (1/1)
• Chenopodiaceae (1/6)
• Compositae (1/1)
• Cucurbitaceae (3/3)
• Leguminosae-Caesalpinioideae (1/1)
• Leguminosae-Papilionoideae (1/4)
• Solanaceae (4/8)
• Umbelliferae (1 /1)

Sources of host-range data

Caciagli et al. (1989).

Physical and biochemical properties

Properties of particles in sap

TIP: 50 °C. LIV: 1.5 days. DEP: log₁₀ minus 3. Electron microscopy: purification.

Purification method

Caciagli et al. (1989).

Particle morphology

Virions isometric; not enveloped; 24 nm in diameter, or 29 nm in diameter, or 36 nm in diameter; rounded in profile; without a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations (in CsCl), or three sedimenting components in purified preparations (in sucrose). Density 1.354 g cm^-3 in CsCl. A₂₆₀/A₂₈₀ ratio 1.63.

Biochemical properties

Genome consists of RNA; single-stranded; linear. Total genome size 11.8 kb. Genome of four parts; largest (or only) genome part the largest 4.3 kb; the 2nd largest 3.7 kb; the 3rd largest 2.7 kb; the 4th largest 1.1 kb. Genomic nucleic acid isolated by Boccardo and Milne (1975); Caciagli et al. (1989). Infectivity retained when deproteinised with proteases; retained when deproteinised with phenol or detergent.

Features of proteins

Virion protein(s) one; M_r 24300. Method of preparation: Francki et al. (1980).

Replication

Replication does not depend on a helper virus.

Cytopathology

Inclusions absent from infected cells.

Taxonomy and relationships

Ilarvirus: Bromoviridae (subgroup 10)

Virus(es) with serologically unrelated virions

Apple mosaic, hydrangea mosaic, prune dwarf, spinach latent, tobacco streak and Tulare apple mosaic viruses.

Comments and References

References

• Boccardo, G. and Milne, R.G. (1975). Virology 68: 79.
• Caciagli, P., Boccardo, G. and Lovisolo, O. (1989). Pl. Path. 38: 577.
• Francki, R.I.B., Hatta, T., Boccardo, G. and Randles, J.W. (1980). Virology 101: 233.

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: 16^th January 1997.' URL http://biology.anu.edu.au/Groups/MES/vide/

Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.