Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Diodia vein chlorosis (?) closterovirus

Index

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

Data collated by A.A. Brunt, 1992.

Nomenclature

Acronym

DVCV

ICTV decimal code

17.0.1.T.3.04

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Diodia virginiana - chlorotic vein-banding and general chlorosis.

Transmission

Transmitted by a vector; an insect; Trialeurodes abutilonea; Aleyrodidae. Virus not transmitted by mechanical inoculation; transmitted by grafting.

Geographical distribution

Spreads in the USA (Arkansas).

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Diodia virginiana - chlorotic vein-banding.

Maintenance and propagation hosts

Diodia virginiana.

Assay hosts (Local lesions or Whole plants)

Diodia virginiana (W).

Susceptible host species

• Diodia virginiana

Insusceptible host species

• Beta vulgaris
• Chenopodium murale
• Chenopodium quinoa
• Cucumis sativus
• Cucurbita maxima
• Datura stramonium
• Lactuca sativa
• Nicotiana tabacum
• Phaseolus vulgaris
• Spinacia oleracea

Families containing susceptible hosts

• Rubiaceae (1/1)

Families containing insusceptible hosts

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

Sources of host-range data

Larsen et al. (1991).

Physical and biochemical properties

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with no clear modal length; 12 nm wide.

Features of the genome

3 virus specified dsRNA species found in infected cells. Size of largest virus specified dsRNA 4.6 kbp; 2nd largest 4.3 kbp; 3rd largest 1.9 kbp.

Cytopathology

Virions found in leaves and vascular parenchyma; in cytoplasm. Other cellular changes: the presence of virions in phloem parenchyma and sieve elements; virions are associated with membranous vesicles containing fibrils. Cytoplasm also contains greatly proliferated tubular membranes and vacuoles have double membrane-bound bodies.

Taxonomy and relationships

Possible Closterovirus

Virus(es) with serologically unrelated virions

Beet yellows and lettuce infectious yellows viruses.

Comments and References

General comments

A virus with similar virions and transmissible by Trialeurodes abutilonea occurs in Diodia maritima in California, U.S.A. (Duffus et al., 1986). Its possible relationship to diodia vein chlorosis virus has yet to be determined.

References

• Duffus, J.E., Larsen, R.C. and Lui, H.Y. (1986). Phytopathology 76: 97.
• Larsen, R.C., Kim, K.S. and Scott, H.A. (1991). Phytopathology 81: 227.

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.