Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Cassia ringspot virus

Index

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

Data collated by B.R. Singh, 1983. Revised 1984.

Nomenclature

Synonyms

coffee senna ringspot mosaic virus.

ICTV decimal code

79.0.P.DE.12

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Cassia occidentalis - variable; mosaics, ringspots and necrosis.

Transmission

Not transmitted by Myzus persicae, Aphis gossypii, A. craccivora, Bemisia tabaci. Virus transmitted by mechanical inoculation; transmitted by grafting; not transmitted by contact between plants.

Geographical distribution

Spreads in India.

Experimental host range

Experimentally infected plants mostly show variable; local lesions, mosaics, mottles.

Diagnostically susceptible host species and symptoms

• Arachis hypogaea - systemic mosaic.
• Cassia occidentalis - mild necrotic and chlorotic mosaic and mottle.
• C. tora - mosaic, mottle, vein banding.
• Pisum sativum - mosaic, mottle and wilting.
• Trifolium alexandrinum - mosaic, mottle.
• Vigna mungo, V. radiata - mosaic, mottle.
• V. unguiculata cv. T2, V. unguiculata cv. 5269 - necrotic local lesions.

Maintenance and propagation hosts

Arachis hypogaea, Cassia occidentalis, C. tora, Trifolium alexandrinum, Vigna unguiculata cv. T2.

Assay hosts (Local lesions or Whole plants)

Arachis hypogaea, Cassia occidentalis, C. tora, Trifolium alexandrinum, Vigna unguiculata cv. T2.

Susceptible host species

• Arachis hypogaea
• Cassia occidentalis
• Cassia tora
• Pisum sativum
• Trifolium alexandrinum
• Vigna mungo
• Vigna radiata
• Vigna unguiculata
• Vigna unguiculata ssp. sesquipedalis

Insusceptible host species

• Abelmoschus esculentus
• Cajanus cajan
• Capsicum annuum
• Chenopodium amaranticolor
• Crotalaria retusa
• Cucumis sativus
• Cucurbita pepo
• Cyamopsis tetragonoloba
• Datura stramonium
• Glycine max
• Gomphrena globosa
• Helianthus annuus
• Lablab purpureus
• Lycopersicon esculentum
• Nicandra physalodes
• Nicotiana glutinosa
• Nicotiana tabacum
• Raphanus sativus
• Ricinus communis
• Solanum melongena
• Solanum nigrum
• Spinacia oleracea
• Zea mays
• Zinnia elegans

Families containing susceptible hosts

• Leguminosae-Caesalpinioideae (2/2)
• Leguminosae-Papilionoideae (7/12)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (2/2)
• Compositae (2/2)
• Cruciferae (1/1)
• Cucurbitaceae (2/2)
• Euphorbiaceae (1/1)
• Gramineae (1/1)
• Leguminosae-Papilionoideae (5/12)
• Malvaceae (1/1)
• Solanaceae (8 /8)

Sources of host-range data

Mathur and Singh (1969).

Physical and biochemical properties

Properties of particles in sap

TIP: 80 °C. LIV: 0.75 days. DEP: log₁₀ minus 5-6.

Taxonomy and relationships

(ungrouped)

Comments and References

General comments

Some virologists are as yet unconvinced that cassia ringspot virus is a distinct virus.

References

• Mathur, A.K. and Singh B.R. (1969). Indian Phytopath. 25: 314.

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.