Tobacco streak virus (TSV) is a plant pathogenic virus that primarily affects members of the tobacco family, especially tobacco plants (Nicotiana spp.), but can also infect other crop plants such as tomatoes, peppers, and cucumbers. TSV belongs to the genus Ilarvirus within the family Bromoviridae.
The virus is usually transmitted through infected seeds, plant debris, or through mechanical transmission by feeding insects such as aphids, thrips, or beetles. Once inside the host plant, TSV spreads systemically through the vascular tissue, causing visible symptoms and impairing plant development.
Symptoms of Tobacco streak virus infection can vary depending on the host plant, but typically exhibit brown necrotic streaks on leaves, stems, and fruits. Infected leaves may also show a distinct mosaic pattern, along with curling, wilting, and stunted growth. In severe cases, the virus can lead to reduced yields, deformation, and even death of the infected plants.
Effective management and control strategies for Tobacco streak virus include the use of virus-free seeds, regular scouting for insect vectors, and prompt removal and destruction of infected plant material. Control measures can also involve insect pest management practices, such as biological control agents or insecticides, to reduce the chances of viral transmission.
Overall, Tobacco streak virus poses a significant threat to tobacco and other susceptible crops, and its management requires vigilant monitoring and implementation of appropriate control measures to minimize its impact on agricultural production.
