Cunninghamella echinulata

Cunninghamella echinulata is a species of zygomycete fungus within the order Mucorales. While typically found as a saprophyte in soils, it acts as an opportunistic plant pathogen capable of causing severe soft rots and mold growth on a wide variety of agricultural crops.

The host range includes a broad spectrum of fruits, vegetables, and germinating seeds. The fungus particularly targets tissues that have been damaged by mechanical stress or environmental factors, leading to rapid deterioration of the plant tissue quality and marketability.

Infected plants typically exhibit a thick, cottony mycelial growth that shifts from white to grey as sporangia develop. The affected parts become soft, watery, and eventually collapse, often emitting a distinct odor that signals the advanced stage of fungal decay.

Optimal conditions for disease development include high humidity, poor aeration, and temperatures ranging between 20°C and 30°C. The pathogen spreads primarily through airborne spores and contaminated soil or water, thriving in environments where sanitation is neglected.

Effective management relies on a multi-faceted approach. Key strategies include improving soil drainage to prevent stagnant moisture, using fungicide-treated seeds, and maintaining strict sanitation practices in harvesting and storage facilities to prevent cross-contamination.

Integrated pest management (IPM) protocols are essential for long-term control. By focusing on crop rotation and reducing the incidence of wounding on plant surfaces, producers can significantly decrease the risk of Cunninghamella-induced losses in agricultural operations.