Jatropha leaf curl begomovirus

Jatropha leaf curl begomovirus (Begomovirus jatrophagujaratense) is a devastating viral pathogen belonging to the Geminiviridae family. It specifically targets Jatropha species, causing significant physiological distress and hindering the cultivation of these plants for biofuel and industrial oil production.

The virus is primarily transmitted through the whitefly (Bemisia tabaci), which acts as the main vector. By feeding on the phloem sap of an infected plant, the whitefly acquires the virus particles and subsequently inoculates healthy plants, facilitating rapid spread within the crop fields.

The symptoms of the disease are characterized by severe leaf curling, distortion of the foliage, and yellow mosaic patterns. Affected plants often exhibit stunted growth, reduced internode length, and a general lack of vigor, which are typical indicators of a severe systemic viral infection.

The economic impact of this begomovirus is substantial, as it leads to a marked reduction in both plant biomass and seed yield. Since Jatropha is mainly grown for its seeds, any disruption in its reproductive health caused by the virus directly impacts the profitability and viability of the agricultural operation.

Effective management strategies focus on integrated pest management (IPM) to control the whitefly population. Preventive measures include the removal of weed hosts, the use of virus-free planting material, periodic scouting for vectors, and the strategic application of systemic insecticides to break the transmission cycle.

• Leaf mosaic and discoloration
• Stunted plant development
• Reduced seed oil content
• Vector-borne disease transmission