Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Kalanchoe top-spotting badnavirus

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

Synonyms

kalanchoe `commelina yellow mottle badnavirus'.

Acronym

KTSV

ICTV decimal code

07.0.1.0.007

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Kalanchoe blossfeldiana - sunken circular yellow spots and occasional leaf deformation in intolerant cultivars.

Transmission

Transmitted by a vector; an insect; Planococcus citri; Pseudococcidae. Virus transmitted by mechanical inoculation; transmitted by seed; transmitted by pollen to the seed.

Geographical distribution

Spreads in the UK and the USA.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Kalanchoe blossfeldiana - circular yellow spots in systemically infected leaves.

Diagnostically insusceptible host species

Chenopodium quinoa, Cucumis sativus, Nicotiana benthamiana, N. glutinosa, Phaseolus vulgaris.

Maintenance and propagation hosts

Kalanchoe blossfeldiana.

Assay hosts (Local lesions or Whole plants)

Kalanchoe blossfeldiana (W).

Susceptible host species

• Kalanchoe blossfeldiana

Insusceptible host species

• Chenopodium quinoa
• Cucumis sativus
• Nicotiana benthamiana
• Nicotiana glutinosa
• Phaseolus vulgaris
• Pisum sativum

Families containing susceptible hosts

• Crassulaceae (1/1)

Families containing insusceptible hosts

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

Purification method

Lockhart and Ferji (1988).

Physical and biochemical properties

Particle morphology

Virions bacilliform; not enveloped; 130 nm in length; 30 nm wide.

Biochemical properties

Genome consists of DNA; double-stranded; circular. Total genome size 7.35 kb. Genome unipartite; largest (or only) genome part 7.35 kb.

Cytopathology

Virions found in leaves and mesophyll; in cytoplasm.

Taxonomy and relationships

Badnavirus

Virus(es) with serologically unrelated virions

Banana streak, cacao swollen shoot, commelina yellow mottle, dioscorea bacilliform, rice tungro bacilliform and sugarcane viruses.

Additional comments on relationships

The viral genome shows weak homology with those of banana streak and badnaviruses.

Comments and References

References

• Hearon, S.S. and Locke, J.C. (1984). Phytopathology 74: 347.
• Lockhart, B.E. and Ferji, Z. (1988). Acta Hort. 234: 73.

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.