Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Foxtail mosaic potexvirus

Index

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

Data collated by A.A. Brunt, 1991.

Nomenclature

Acronym

FoMV

ICTV decimal code

56.0.1.0.008

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Setaria italica, S. viridis - leaf mosaic.

Transmission

Virus not transmitted by mechanical inoculation; transmitted by seed.

Geographical distribution

Spreads in the USA.

Experimental host range

Many (>9) families susceptible.

Diagnostically susceptible host species and symptoms

• Gomphrena globosa, Pisum sativum - necrotic local lesions; not systemic.
• Chenopodium amaranticolor, Nicotiana clevelandii, Tetragonia tetragonioides - necrotic local lesions; systemic mosaic.
• Avena sativa, Hordeum vulgare, Triticum aestivum - systemic mosaic.

Diagnostically insusceptible host species

Arrhenatherum elatius, Lolium perenne, Sorghum halepense.

Maintenance and propagation hosts

Avena sativa, Hordeum vulgare, Triticum aestivum.

Assay hosts (Local lesions or Whole plants)

Chenopodium amaranticolor (L).

Susceptible host species

• Avena sativa
• Beta vulgaris
• Brassica juncea
• Bromus inermis
• Catharanthus roseus
• Chenopodium album
• Chenopodium amaranticolor
• Chenopodium ambrosioides
• Chenopodium capitatum
• Chenopodium foetidum
• Chenopodium hybridum
• Chenopodium murale
• Chenopodium quinoa
• Crotalaria spectabilis
• Cucumis sativus
• Cyamopsis tetragonoloba
• Cynodon dactylon
• Glycine max
• Gomphrena globosa
• Hordeum vulgare
• Lagurus ovatus
• Lophopyrum elongatum
• Lycopersicon esculentum
• Nicandra physalodes
• Nicotiana clevelandii
• Nicotiana megalosiphon
• Nicotiana rustica
• Nicotiana tabacum
• Oryza sativa
• Panicum capillare
• Panicum maximum
• Panicum miliaceum
• Phalaris arundinacea
• Phleum pratense
• Physalis floridana
• Pisum sativum
• Poa pratensis
• Secale cereale
• Setaria italica
• Setaria viridis
• Sorghum bicolor
• Spinacia oleracea
• Tetragonia tetragonioides
• Torenia fournieri
• Triticum aestivum
• Triticum durum
• Vigna unguiculata
• Zea mays
• Zinnia elegans

Insusceptible host species

• Arrhenatherum elatius
• Lolium perenne
• Sorghum halepense

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Apocynaceae (1/1)
• Chenopodiaceae (10/10)
• Compositae (1/1)
• Cruciferae (1/1)
• Cucurbitaceae (1/1)
• Gramineae (20/23)
• Leguminosae-Papilionoideae (5/5)
• Scrophulariaceae (1 /1)
• Solanaceae (7/7)
• Tetragoniaceae (1/1)

Families containing insusceptible hosts

• Gramineae (3/23)

Sources of host-range data

Paulsen and Niblett (1977).

Physical and biochemical properties

Properties of particles in sap

TIP: 70 °C. LIV: 46 days (in sap), or 105 days (in buffered leaf extracts). DEP: log₁₀ minus 7.

Purification method

Bancroft et al. (1979).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 500 nm. Axial canal obscure. Pitch of basic helix 3.5 nm.

Physical properties

Two sedimenting components in purified preparations; sedimentation coefficient of the fastest 144 S (probably dimers); of the other(s) 122 S (monomers). A₂₆₀/A₂₈₀ ratio 1.2.

Biochemical properties

Virions contain 7 % nucleic acid; 93 % protein.

Genome consists of RNA; single-stranded. Total genome size 6.8 kb. Genome unipartite; largest (or only) genome part 6.8 kb.

NCBI sequence data (Entrez search)

Sequence database accession code(s)

• M62730 Em(40)_vi:FXMCGA Gb(84)_vi:FXMCGA Foxtail mosaic virus, complete genome. 12/91 6,151bp. 1 sequence.

Features of proteins

Amino acid composition: Short (1981). Virion proteins not glycosylated.

Cytopathology

Virions found in leaves and mesophyll; in cytoplasm.

Taxonomy and relationships

Potexvirus

Virus(es) with serologically related virions

Narcissus mosaic and viola mottle viruses.

Virus(es) with serologically unrelated virions

Cactus X, clover yellow mosaic, papaya mosaic, potato X and white clover mosaic viruses.

Comments and References

References

• Bancroft, J.E., Abouhaidar, M. and Erickson, J.W. (1979). Virology 98: 121.
• Paulsen, A.Q. and Niblett, C.L. (1977). Phytopathology 67: 1346.
• Paulsen, A.Q. and Sill, W.H. (1969). Phytopathology 59: 1043.
• Richardson, J.F., Tollin, P. and Bancroft, J.B. (1981). Virology 112: 34.
• Short, M.N. (1981). Rep. John Innes Inst. 1980, p. 126.
• Short, M.N. (1983). CMI/AAB Descr. Pl. Viruses No. 264, 3 pp.

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.