Tobacco streak virus

From Pestinfo-Wiki
Jump to: navigation, search

Literature database
62 articles sorted by:
year (descending)
research topics
host plants
symptoms of Tobacco streak virus on a tobacco leaf (click on image to enlarge it)
Author(s): Paul Bachi, University of Kentucky Research and Education Center
Source: IPM Images

Tobacco streak virus (TSV)

The virus is widely distributed and infects a large variety of crops, such as groundnuts, beans, cucumber or sunflower. Infected plants show chlorosis, necrosis, mottling, stunting and fruit deformations. Leaf nodes might show red discoloration and break. Infections can be also symptomless.

symptoms of Tobacco streak virus on a bean leaf (click on image to enlarge it)
Author(s): Howard F. Schwartz, Colorado State University
Source: IPM Images

Yield losses of more than 50% have been reported. The virus can be transmitted through seeds, infected pollen and also mechanically, although it is unstable in sap. There are further reports of transmission by thrips. For management, the use of certified virus-free seeds is recommended. Vector control seems to have little effect. The virus is the type species of the genus Ilarvirus. The particles are isometric, around 30 nm large, with 3 RNA molecules.

Vernacular names
• English: tobacco streak virus
• Français: virus de la striure du tabac