Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Bymoviruses: Potyviridae

Index

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

Nomenclature

ICTV reference

ICTV decimal code 57.0.3.

Definitive species

• Barley mild mosaic bymovirus
• Barley yellow mosaic bymovirus
• Oat mosaic bymovirus
• Rice necrosis mosaic bymovirus
• Wheat spindle streak mosaic bymovirus
• Wheat yellow mosaic bymovirus

Host range and symptoms

Natural host range and symptoms

Symptoms persist (2), or vary seasonally (4), or disappear soon after infection (1).

Transmission

Transmitted by a vector; a fungus; Plasmodiophorales. Virus transmitted by mechanical inoculation; not transmitted by grafting (1/1); not transmitted by contact between plants (5/5); not transmitted by seed; not transmitted by pollen (4/4).

Experimental host range

Several (3-9) families susceptible (1), or few (<3) families susceptible (5).

Susceptible host species

• Aegilops kotschyi (1)
• Aegilops searsii (1)
• Aegilops speltoides (1)
• Avena byzantina (1)
• Avena sativa (1)
• Avena strigosa (1)
• Eremopyrum hirsutum (1)
• Hordeum vulgare (2)
• Lagurus ovatus (1)
• Oryza sativa (1)
• Secale cereale (2)
• Triticum aestivum (3)
• Triticum durum (1)

Insusceptible host species

• Abelmoschus esculentus (1/5)
• Agrostis tenuis (1/5)
• Allium cepa (1/5)
• Amaranthus caudatus (1/5)
• Anthoxanthum odoratum (1/5)
• Antirrhinum majus (1/5)
• Avena sativa (3/5)
• Beta vulgaris (1/5)
• Brassica oleracea var. botrytis (1/5)
• Bromus inermis (1/5)
• Bromus mollis (1/5)
• Capsicum annuum (1/5)
• Carthamus tinctorius (1/5)
• Chenopodium album (1/5)
• Chenopodium amaranticolor (3/5)
• Chenopodium hybridum (1/5)
• Chenopodium quinoa (1/5)
• Chrysanthemum morifolium (1/5)
• Cicer arietinum (1/5)
• Cucumis melo (1/5)
• Cucumis sativus (2/5)
• Cucurbita pepo (1/5)
• Dactylis glomerata (1/5)
• Datura stramonium (1/5)
• Echinochloa crus-galli (1/5)
• Elymus junceus (1/5)
• Elymus tsukushiensis var. transiens (1/5)
• Elytrigia repens (1/5)
• Festuca pratensis (1/5)
• Glycine max (1/5)
• Gomphrena globosa (1/5)
• Gossypium hirsutum (1/5)
• Hordeum vulgare (3/5)
• Lactuca sativa (1/5)
• Lathyrus odoratus (1/5)
• Lolium (1/5)
• Lolium multiflorum (2/5)
• Lolium perenne (1/5)
• Lolium temulentum (1/5)
• Lycopersicon esculentum (1/5)
• Macroptilium lathyroides (1/5)
• Medicago sativa (1/5)
• Nicotiana glutinosa (1/5)
• Nicotiana sylvestris (1/5)
• Nicotiana tabacum (3/5)
• Oryza sativa (3/5)
• Panicum maximum (1/5)
• Petunia × hybrida (1/5)
• Phalaris arundinacea (1/5)
• Phaseolus acutifolius (1/5)
• Phaseolus lunatus (1/5)
• Phaseolus vulgaris (2/5)
• Phlox drummondii (1/5)
• Physalis peruviana (1/5)
• Pisum sativum (1/5)
• Poa annua (1/5)
• Poa pratensis (1/5)
• Raphanus sativus (1/5)
• Secale cereale (3/5)
• Setaria viridis (1/5)
• Solanum melongena (1/5)
• Solanum tuberosum (1/5)
• Spinacia oleracea (1/5)
• Trifolium incarnatum (1/5)
• Trifolium repens (1/5)
• Triticum aestivum (3/5)
• Tulipa gesneriana (1/5)
• Vicia faba (1/5)
• Zea mays (5/5)
• Zinnia elegans (1/5)

Families containing susceptible hosts

• Gramineae

Families containing insusceptible hosts

• Alliaceae (1/5)
• Amaranthaceae (1/5)
• Chenopodiaceae (3/5)
• Compositae (1/5)
• Cruciferae (1/5)
• Cucurbitaceae (2/5)
• Gramineae (5/5)
• Leguminosae-Papilionoideae (2/5)
• Liliaceae (1/5)
• Malvaceae (1/5)
• Polemoniaceae (1/5)
• Scrophulariaceae (1/5)
• Solanaceae (3/5)

Physical and biochemical properties

Properties of particles in sap

TIP: 44-51.25-65 °C. LIV: 1-4.333-14 days. DEP: log₁₀ minus 1 (2), or 2-4 (4), or 5 (2). Infectivity of sap not changed by treatment with di-ethyl ether (1/1). Leaf sap contains few virions.

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with no clear modal length (2), or with clear modal lengths (4); of 257-589.3-2000 nm; 12-13.83-16 nm wide. Axial canal obscure. Basic helix obscure (5/5).

Physical properties

One sedimenting component in purified preparations (1/2), or two sedimenting components in purified preparations (1/2). Density 1.28-1.299-1.32 g cm^-3 in CsCl. A₂₆₀/A₂₈₀ ratio 1.14.

Biochemical properties

Virions contain 5 % nucleic acid; 95 % protein.

Genome consists of RNA (3/3); single-stranded (3/3); linear (3/3). Total genome size 11.21-11.73-12 kb. Genome of two parts (3/3); largest (or only) genome part 7.632-7.877-8 kb; the 2nd largest 3.585-3.861-4 kb. Base composition 22.1 % G; 27.4 % A; 24 % C; 26.5 % U. Infectivity retained when deproteinised with phenol or detergent (1/1). Poly A region present (3/3). Additional factor not required for infectivity (2/2).

NCBI sequence data (Entrez search)

Features of the genome

Non-genomic nucleic acid not found in the virions (2/2).

Features of proteins

Virion protein(s) one (2/4), or two (1/4), or three (1/4); M_r 30000-33180-36000. M_r of 2nd largest 26500-28250-30000. M_r of 3rd largest 27000.

Virus-coded non-virion proteins isolated (1/1); one protein found (1/1). M_r 69000-70500-72000.

Replication

Replication does not depend on a helper virus (2/2).

Cytopathology

Virions found in cytoplasm. Inclusions present in infected cells; are amorphous X-bodies (3), or membranous bodies (4), or pinwheels; they do not contain virions.

Taxonomy and relationships

Viral family : Potyviridae.

Illustrations

Electron micrograph.

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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.

Please send comments, corrections and suggestions to: vide-manager@biology.anu.edu.au