Solanum leaf curl begomovirus

Begomovirus solanumdelhiquinti is a significant plant viral pathogen belonging to the Begomovirus genus. These viruses are characterized by their circular single-stranded DNA genomes and are transmitted by whiteflies. The disease interferes with the plant’s nutrient transport system and photosynthetic efficiency, leading to systemic infection that stunts the growth of the entire plant.

The host range is primarily restricted to the Solanaceae family. Economically important crops such as tomatoes (Solanum lycopersicum), peppers, and eggplants are highly susceptible. The pathogen is particularly problematic in tropical and subtropical regions where the insect vector populations remain active throughout the year, but it also poses a significant threat to greenhouse production in temperate zones.

Typical symptoms manifest as leaf curling, severe yellowing (chlorosis), and mosaic patterns. The infected plants often exhibit stunted growth with shortened internodes, giving them a bushy appearance. Fruit set is often drastically reduced, and the resulting fruits may be undersized, discolored, or malformed, rendering them unsuitable for commercial sale.

The transmission is primarily mediated by the whitefly Bemisia tabaci. The virus is acquired by the vector through feeding on phloem sap. The epidemiological spread is determined by the population dynamics of the vector. High temperature, humidity, and the presence of alternate host weeds create favorable conditions for the virus to spread rapidly within a farm.

Effective management strategies for Begomovirus solanumdelhiquinti require an Integrated Pest Management (IPM) approach. This includes:

• Rigorous control of whitefly populations using targeted insecticides.
• Utilization of fine-mesh insect-proof netting in greenhouses.
• Removal and destruction of symptomatic plants to reduce primary inoculum.
• Strict weeding of surrounding areas to eliminate host reservoirs.
• Selection of resistant or tolerant cultivars where available.