Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Caraway latent (?) nepovirus

Index

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

Data collated by P. van Dijk and L. Bos, 1991.

Nomenclature

Acronym

CawLV

ICTV decimal code

14.0.T.1.006

Host range and symptoms

Natural host range and symptoms

Symptoms usually none.
• Carum carvi - symptomless.

Transmission

Not transmitted by Cavariella aegopodii. Virus transmitted by mechanical inoculation.

Geographical distribution

Found, but with no evidence of spread, in the Netherlands.

Experimental host range

Many (>9) families susceptible. Experimentally infected plants mostly show chlorotic or necrotic local lesions followed by chlorotic and often necrotic systemic symptoms.

Diagnostically susceptible host species and symptoms

• Celosia argentea, Chenopodium amaranticolor, C. quinoa - local and systemic necrosis.
• Nicotiana clevelandii - necrotic local lesions and systemic etching and chlorosis.
• Cyamopsis tetragonoloba, Phaseolus vulgaris, Pisum sativum - necrotic local lesions without systemic symptoms.
• Gomphrena globosa - chlorotic /necrotic local lesions and chlorotic systemic symptoms.
• Nicotiana glutinosa - chlorotic local lesions without systemic symptoms.
• Apium graveolens var. rapaceum - systemic vein mosaic followed by latent infection.

Diagnostically insusceptible host species

Catharanthus roseus, Vicia faba, Vigna unguiculata, Pimpinella anisum.

Maintenance and propagation hosts

Chenopodium quinoa, Nicotiana benthamiana, N. clevelandii.

Assay hosts (Local lesions or Whole plants)

Chenopodium quinoa (W), Cyamopsis tetragonoloba (L), Nicotiana clevelandii (W), Phaseolus vulgaris (L).

Susceptible host species

• Ammi majus
• Apium graveolens
• Apium graveolens var. rapaceum
• Beta vulgaris
• Carum carvi
• Celosia argentea
• Chenopodium amaranticolor
• Chenopodium quinoa
• Cucumis sativus
• Cyamopsis tetragonoloba
• Datura stramonium
• Gomphrena globosa
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana glutinosa
• Nicotiana rustica
• Phaseolus vulgaris
• Pisum sativum
• Zinnia elegans

Insusceptible host species

• Catharanthus roseus
• Pimpinella anisum
• Vicia faba
• Vigna unguiculata

Families containing susceptible hosts

• Amaranthaceae (2/2)
• Chenopodiaceae (3/3)
• Compositae (1/1)
• Cucurbitaceae (1/1)
• Leguminosae-Papilionoideae (3/5)
• Solanaceae (5/5)
• Umbelliferae (4/5)

Families containing insusceptible hosts

• Apocynaceae (1/1)
• Leguminosae-Papilionoideae (2/5)
• Umbelliferae (1/5)

Sources of host-range data

Van Dijk and Bos (1989).

Physical and biochemical properties

Properties of particles in sap

LIV: 9-13 days. DEP: log₁₀ minus 3-4. Leaf sap contains many virions.

Particle morphology

Virions isometric; not enveloped; 25 nm in diameter.

Replication

Replication does not depend on a helper virus.

Cytopathology

Virions found in leaves.

Taxonomy and relationships

Possible Nepovirus: Comoviridae

Best tests for diagnosis

Electron microscopy, serology, inoculation to Chenopodium quinoa and C. amaranticolor and estimation of longevity in vitro to distinguish caraway latent virus from heracleum latent, cow parsnip mosaic, tobacco streak, parsnip leafcurl, arabis mosaic and HV3 viruses.

Comments and References

References

• Van Dijk, P. and Bos, L. (1989). Neth. J. Pl. Path. 95: 34.

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.