Colombian pomovirus

Colombian pomovirus (lat. Pomovirus colombiense) is a viral pathogen belonging to the Pomovirus genus. This virus is a significant factor in plant pathology, capable of inducing systemic infections that disrupt normal plant development and lead to substantial physiological stress in host crops.

The primary host for this virus is potato (Solanum tuberosum). The virus is known to be tuber-borne, which means that infected seed potatoes represent a major pathway for the spread of the disease to new regions. The virus persists in host tissues, making early detection and prevention essential for seed quality management.

Symptoms of infection include various forms of mosaic patterns on the foliage, leaf chlorosis, and general stunting of the plant. In many cases, the leaf structure becomes deformed, which impairs the plant's ability to photosynthesize effectively and subsequently reduces the yield of tubers both in number and size.

The transmission of Colombian pomovirus in the soil is primarily mediated by fungal vectors such as Spongospora subterranea, which causes powdery scab. These fungal spores act as a protective reservoir for the virus, allowing it to survive for extended periods in the field even after the removal of host plants.

Effective management and prevention strategies must be multifaceted:

• Sourcing and planting certified virus-free seed tubers.
• Implementing long-term crop rotation to reduce vector populations.
• Ensuring proper field sanitation to remove infected plant debris.
• Monitoring fields for both the virus and its soil-borne fungal vectors.
• Managing irrigation and soil conditions to limit the spread of vector-borne pathogens.