Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Freesia mosaic potyvirus

Index

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

Data collated by S. Phillips, 1985.

Nomenclature

Synonyms

freesia streak virus.

Acronym

FreMV.

ICTV decimal code

57.0.1.T.038

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Freesia refracta - mild chlorosis symptomless.

Transmission

Transmitted by a vector; an insect; Macrosiphum euphorbiae, Myzus persicae; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation; not transmitted by contact between plants; not transmitted by seed; not transmitted by pollen.

Geographical distribution

Spreads in Australia, Ireland, the Netherlands, and the UK. Found, but with no evidence of spread, in New Zealand.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

none reported.

Diagnostically insusceptible host species

Phaseolus vulgaris, Chenopodium quinoa, Trifolium incarnatum, Vicia faba.

Maintenance and propagation hosts

Freesia refracta.

Assay hosts (Local lesions or Whole plants)

none reported.

Susceptible host species

• Freesia refracta

Insusceptible host species

• Brassica campestris ssp. pekinensis
• Brassica juncea
• Chenopodium amaranticolor
• Chenopodium murale
• Chenopodium quinoa
• Cucumis sativus
• Datura stramonium
• Gomphrena globosa
• Lilium formosanum
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana glutinosa
• Nicotiana rustica
• Nicotiana tabacum
• Petunia × hybrida
• Phaseolus vulgaris
• Pisum sativum
• Silene armeria
• Trifolium incarnatum
• Verbesina encelioides
• Vicia faba
• Vigna unguiculata

Families containing susceptible hosts

• Iridaceae (1/1)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Caryophyllaceae (1/1)
• Chenopodiaceae (3/3)
• Compositae (1/1)
• Cruciferae (2/2)
• Cucurbitaceae (1/1)
• Leguminosae-Papilionoideae (5/5)
• Liliaceae (1/1)
• Solanaceae (7/7)

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains many virions.

Purification method

Van Koot et al. (1954).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 825 nm; 12 nm wide. Axial canal obscure.

Replication

Replication does not depend on a helper virus.

Cytopathology

Virions found in all parts of the host plant; in cytoplasm. Inclusions absent from infected cells.

Taxonomy and relationships

Potyvirus: Potyviridae

Comments and References

General comments

This virus, together with freesia leaf necrosis virus is the cause of a disease originally named freesia streak (Brunt, 1974; van Dorsk, 1973).

References

• Brunt, A.A. (1974). Rep. Glasshouse Crops Res. Inst. 1973, p. 117.
• Foxe, M.J. and Wilson, U.E. (1985). Acta Hort. 164: 291.
• Van Dorst, H.J.M. (1973). Neth. J. Pl. Path. 79: 130.
• Van Koot, Y., van Slogteren, D.H.M., Cremer, M.C. and Camfferman, J. (1954). Tijdschr. Plziekt. 60: 157.

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.