Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Zucchini yellow fleck potyvirus

Index

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

Data collated by C. Vovlas, 1991.

Nomenclature

Acronym

ZYFV

ICTV decimal code

57.0.1.0.076

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Cucurbita pepo - yellow pin-points on leaves, becoming completely yellow and necrotic, stunting and fruitlessness with severe infection.

Transmission

Transmitted by a vector; an insect; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation; transmitted by contact between plants.

Geographical distribution

Spreads in Italy (the south).

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show yellow local lesions, systemic mottling.

Diagnostically susceptible host species and symptoms

• Cucumis sativus - necrotic local lesions, systemic mottling.
• C. melo, Cucurbita maxima - systemic yellow mottle.
• Cucurbita pepo - local lesions, total necrosis.
• Citrullus lanatus - small local lesions and yellow flecking.
• Lagenaria siceraria - systemic vein clearing, mottling.

Diagnostically insusceptible host species

Chenopodium quinoa, C. amaranticolor, Gomphrena globosa, Vigna unguiculata ssp. unguiculata, Phaseolus vulgaris cvs Bountiful and La Victoire.

Maintenance and propagation hosts

Cucumis sativus, Cucurbita maxima, Cucumis melo, Lagenaria siceraria.

Assay hosts (Local lesions or Whole plants)

Cucurbita pepo (L), Cucumis sativus (W), Cucumis melo (W), Citrullus lanatus (L).

Susceptible host species

• Citrullus lanatus
• Cucumis melo
• Cucumis sativus
• Cucurbita maxima
• Cucurbita pepo
• Ecballium elaterium
• Lagenaria siceraria

Insusceptible host species

• Celosia cristata
• Chenopodium amaranticolor
• Chenopodium quinoa
• Gomphrena globosa
• Luffa acutangula
• Lupinus albus
• Nicotiana clevelandii
• Nicotiana tabacum (cvs. White Burley, Xanthi)
• Ocimum basilicum
• Phaseolus vulgaris
• Vicia faba
• Vigna unguiculata ssp. unguiculata
• Zinnia elegans

Families containing susceptible hosts

• Cucurbitaceae (7/8)

Families containing insusceptible hosts

• Amaranthaceae (2/2)
• Chenopodiaceae (2/2)
• Compositae (1/1)
• Cucurbitaceae (1/8)
• Labiatae (1/1)
• Leguminosae-Papilionoideae (4/4)
• Solanaceae (2/2)

Sources of host-range data

Vovlas et al. (1981).

Physical and biochemical properties

Properties of particles in sap

TIP: 55-60 °C. LIV: 30 days. DEP: log₁₀ minus 4-5.

Purification method

Systemically infected leaves homogenised in potassium phosphate buffer and carbon tetrachloride with chloroform (1/2 volume each) for clarification. Precipitation with PEG.

Particle morphology

Virions filamentous; with a clear modal length; of 750 nm.

Physical properties

One sedimenting component in purified preparations. Density 1.30.

Replication

Replication does not depend on a helper virus.

Cytopathology

Virions found in leaves; in cytoplasm. Inclusions present in infected cells; are crystals in the cytoplasm, membranous bodies, pinwheels, and unusual in shape; amorphous inclusions; they contain virions. Other cellular changes: cytological modifications caused mainly by fibriate bodies and other types of inclusions.

Taxonomy and relationships

Potyvirus: Potyviridae

Comments and References

References

• Martelli, G.P., Russo, M. and Vovlas, C. (1981). Phytopathol. Medit. 20: 193.
• Vovlas, C. (1979). 3rd Conf. of ISHS Working Group on Vegetable Crops, Bari, Italy.
• Volvas, C., Hiebert, E. and Russo, M. (1981). Phytopathol. Medit. 20: 123.

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.