Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Petunia vein clearing (?) caulimovirus

Index

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

Data collated by D.-E. Lesemann, 1991.

Nomenclature

Acronym

PVCV

ICTV decimal code

15.0.1.T.004

Host range and symptoms

Natural host range and symptoms

Symptoms persist and vary seasonally. Symptoms chlorotic vein clearing, leaf malformation.
• Petunia × hybrida hort. cv. Himmelsroeschen - chlorotic clearing and banding of leaf veins, leaf malformation, stunting of sprouts.

Transmission

Virus not transmitted by mechanical inoculation; transmitted by grafting.

Geographical distribution

Found, but with no evidence of spread, in Germany.

Experimental host range

Few (<3) families susceptible. Experimentally infected plants mostly show vein clearing, leaf malformation.

Diagnostically susceptible host species and symptoms

• Petunia spp. - vein clearing, chlorotic vein banding and leaf distortion.

Maintenance and propagation hosts

Petunia spp.

Susceptible host species

• Petunia × hybrida

Families containing susceptible hosts

• Solanaceae (1/1)

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions.

Particle morphology

Virions isometric; not enveloped; 43-46 nm in diameter; rounded in profile; without a conspicuous capsomere arrangement.

Cytopathology

Virions found in leaves, mesophyll, epidermis, vascular parenchyma, phloem and the companion cells; in cytoplasm and in nuclei. Inclusions present in infected cells; are viroplasms and unusual in shape; proliferation of endoplasmic reticulum; they do not contain virions. Other cellular changes: proliferation of endoplasmic reticulum into multilayers, surrounding the virion-containing regions which also contain the dark staining, viroplasm like rounded and vacuolated inclusions.

Taxonomy and relationships

Tentatively Caulimovirus

Virus(es) with serologically unrelated virions

Cauliflower mosaic and dahlia mosaic viruses.

Comments and References

References

• Casper, R., Lesemann, D.-E. and Fischer, D. (1973). Proc. 7th Conf. Czechoslovak Pl. Virologists, High Tatras 1971, Slovak Acad. Sci., Bratislava, p. 247.
• Lesemann, D.-E. and Casper, R. (1973). Phytopathology 63: 1118.

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.