Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Ornithogalum mosaic potyvirus

Index

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

Data collated by J.T. Burger, 1991.

Nomenclature

Acronym

OrMV

ICTV decimal code

57.0.1.0.044

Host range and symptoms

Natural host range and symptoms

Symptoms persist. Symptoms mottling, mosaic and sunken areas.
• Ornithogalum spp. and hybrids - mottling of leaves and stems, flowers deformed.
• Lachenalia spp. and hybrids - mosaic or mottling of leaves and flower stems; flowers deformed.

Transmission

Transmitted by a vector; an insect; Myzus persicae; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation.

Geographical distribution

Spreads in the Netherlands, South Africa, and the USA.

Experimental host range

Few (<3) families susceptible. Experimentally infected plants mostly show mottling, mosaic and sunken areas in leaves.

Diagnostically susceptible host species and symptoms

• Chenopodium quinoa, Tetragonia tetragonioides, Nicotiana clevelandii (Derks et al., 1983).

Diagnostically insusceptible host species

Nicotiana spp., Pisum sativum, Petunia × hybrida, Phaseolus vulgaris, Chenopodium spp.

Maintenance and propagation hosts

Ornithogalum spp. and hybrids, Lachenalia spp. and hybrids.

Assay hosts (Local lesions or Whole plants)

Ornithogalum spp. (W), Lachenalia spp. (W).

Susceptible host species

• Chenopodium quinoa
• Lachenalia
• Nicotiana clevelandii
• Ornithogalum thyrsoides
• Tetragonia tetragonioides

Insusceptible host species

• Chenopodium album
• Chenopodium amaranticolor
• Chenopodium capitatum
• Chenopodium foetidum
• Chenopodium murale
• Chenopodium quinoa
• Gomphrena globosa
• Iris germanica
• Lilium longiflorum
• Narcissus jonquilla
• Nerine bowdenii
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana tabacum
• Petunia × hybrida
• Phaseolus vulgaris
• Pisum sativum
• Tetragonia tetragonioides

Families containing susceptible hosts

• Chenopodiaceae (1/6)
• Hyacinthaceae (2/2)
• Solanaceae (1/4)
• Tetragoniaceae (1/1)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Amaryllidaceae (2/2)
• Chenopodiaceae (6/6)
• Iridaceae (1/1)
• Leguminosae-Papilionoideae (2/2)
• Liliaceae (1/1)
• Solanaceae (4/4)
• Tetragoniaceae (1/1)

Sources of host-range data

Derks and Vink-van den Abeele (1980); Dercks et al. (1983); Burger and Von Wechmar (1989).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions. Electron microscopy: elimination of mucilage in plant sap before electron microscopy.

Purification method

Burger and Von Wechmar (1989).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 740 nm; 12 nm wide. Axial canal obscure. Basic helix obscure.

Physical properties

One sedimenting component in purified preparations.

Biochemical properties

Virions contain 5 % nucleic acid; 95 % protein.

Genome consists of RNA; single-stranded; linear. Total genome size » 10 kb. Genome unipartite; largest (or only) genome part » 10 kb. Genomic nucleic acid isolated by Burger and Von Wechmar (1989). Poly A region present; the genome has a polyadenylated 3´-terminal tail. Nucleotide sequence references: Accession number: D00615.

NCBI sequence data (Entrez search)

Sequence database accession code(s)

• D00615 Em(40)_vi:OMNIAB Gb(84)_vi:OMVNIAB Ornithogalum mosaic virus genomic RNA for nuclear inclusion protein (NIa, NIb) and coat protein 1 sequence.

Features of the genome

Features of the genome: single » 10 kb open reading frame. Sequence of CP, NIb and NIa has been determined.

Features of proteins

Virion protein(s) one; M_r 30000; it is coat protein and its function is structural. Method of preparation: Burger and Von Wechmar (1989). Amino acid composition: Burger et al. (1990).

Cytopathology

Virions found in leaves and probably all parts of the host plant.

Taxonomy and relationships

Potyvirus: Potyviridae

Virus(es) with serologically related virions

Bean yellow mosaic, potato Y, hyacinth mosaic, zucchini yellow mosaic and passionfruit woodiness viruses.

Additional comments on relationships

There are strong sequence homologies with most sequenced potyviruses (Burger et al., 1990).

Comments and References

References

• Burger, J.T. and Von Wechmar, M.B. (1988). Acta Hort. 234: 31.
• Burger, J.T. and Von Wechmar, M.B. (1989). Phytopathology 79: 385.
• Burger, J.T., Brand, R.J. and Rybicki, E.P. (1990). J. gen. Virol. 71: 2527.
• Derks, A.F.L.M. and Vink-van den Abeele, J.L. (1980). Acta Hort. 109: 495.
• Derks, A.F.L.M., Vink-van den Abeele, J.L. and Hollinger Th. C. (1983). Jversl. Lab. Bloemboll. Lisse, 1982: 61.
• Smith, F.F. and Brierley, P. (1944a). Phytopathology 34: 497.
• Smith, F.F. and Brierley, P. (1944b). Phytopathology 34: 593.

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.