Kordofan peanut mosaic virus

Kordofan peanut mosaic virus (Potyvirus cordophani) is a plant viral disease caused by a pathogen belonging to the Potyvirus genus. This virus causes systemic infections, which means it spreads throughout the host plant, disrupting vital physiological processes, including nutrient transport and chlorophyll synthesis.

The primary hosts for this virus are leguminous crops, with particular emphasis on peanuts. In regions where these crops are grown, the virus can become established in the local ecosystem, affecting the health of the entire crop population and potentially leading to significant yield losses in terms of both quality and quantity.

Symptoms typically manifest as mosaic patterns on leaves, characterized by variegated light and dark green patches. Advanced stages of the infection may show leaf curling, severe deformation, stunting of the plant, and poor development of seed pods. These physical indicators are classic signs of potyvirus impact on susceptible plant tissue.

The virus is primarily transmitted by insect vectors, most notably aphids. These insects acquire the virus while feeding on infected plant sap and transmit it to healthy plants. Furthermore, reservoir hosts such as common field weeds play a crucial role in the persistence and annual spread of the virus within agricultural areas.

Management strategies focus on a multi-layered prevention approach. Key measures include:

• Removal of weed hosts near fields.
• Implementation of effective aphid control programs.
• Use of virus-free certified seeds.
• Planting resistant or tolerant cultivars where available.
• Maintaining field isolation from older, potentially infected stands.