Cankers and galls (plant)

The pathogen attacks all parts of the potato plant except for the roots. The fungus triggers abnormal cell division, leading to the formation of characteristic warty outgrowths. These galls vary in size and appearance, often resembling cauliflower-like structures that emerge from the eyes of the tubers or stems.

The infection process is heavily influenced by environmental factors, particularly moisture and temperature. Cool, moist soil conditions are ideal for the release of zoospores, which infect the host tissues. Once the host dies or the tubers are harvested, the pathogen releases dormant sporangia into the soil, ensuring long-term survival.

The economic impact of potato wart is devastating. Infected tubers are unfit for human consumption or animal feed, leading to total crop loss. Furthermore, the presence of this fungus triggers strict quarantine regulations, which restrict the movement of soil, machinery, and agricultural products from infested areas.

Integrated pest management is the only way to contain this disease. Primary strategies include the exclusive use of resistant potato varieties, rigorous crop rotation, and strict sanitation protocols for machinery. In many regions, the detection of this pathogen requires official reporting and the immediate cessation of potato production in the affected field.