Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Tobacco mottle umbravirus

Index

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

Data collated by A.A. Brunt, 1987.

Nomenclature

Acronym

TMoV

ICTV decimal code

78.0.1.0.006

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Nicotiana tabacum - vein clearing and dark green leaf mottling. Mixed infections with tobacco vein distorting luteovirus give the rosette disease.

Transmission

Transmitted by a vector; an insect; Myzus persicae, Acyrthosiphon (Aulacorthum) solani; Aphididae. Virus requires, for vector transmission, a helper virus (tobacco vein-distorting luteovirus); transmitted by mechanical inoculation.

Ecology and control

Studies reported by Smith (1946a,b).

Geographical distribution

Spreads in Zimbabwe.

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Nicotiana tabacum, N. glutinosa - dark green leaf mottling.
• Lycopersicon esculentum - systemic transient leaf mottling.
• Datura stramonium - systemic leaf mottling and malformation.

Maintenance and propagation hosts

Nicotiana tabacum, N. glutinosa, Lycopersicon esculentum.

Assay hosts (Local lesions or Whole plants)

Nicotiana tabacum (W).

Susceptible host species

• Datura stramonium
• Lycopersicon esculentum
• Nicotiana glutinosa
• Nicotiana tabacum

Families containing susceptible hosts

• Solanaceae (4/4)

Physical and biochemical properties

Properties of particles in sap

TIP: 55 °C (in tobacco sap). LIV: 2 days. DEP: log₁₀ minus 2-3.

Taxonomy and relationships

Umbravirus

Comments and References

General comments

Tobacco mottle was probably the first virus found to require an assistor virus (tobacco vein distorting luteovirus) for its transmission by aphids (Smith 1946a,b). Few properties of the virus are known, but it may resemble groundnut rosette and carrot mottle `umbraviruses'.

References

• Smith, K.M. (1946a). Parasitol. 37: 21.
• Smith, K.M. (1946b). Parasitol. 37: 131.

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.