Pilobolaceae

The Pilobolaceae family belongs to the order Mucorales. These fungi are primarily known for their coprophilous nature, meaning they thrive on animal dung. In an agricultural context, they are categorized as opportunistic organisms that can contaminate substrates used in mushroom farming or greenhouse seedling production, often serving as indicators of improper composting processes.

These fungi are saprotrophs that thrive on rich organic matter. Their presence in a cultivation environment is usually tied to the introduction of contaminated manure or partially decomposed plant material. Once established, they can rapidly outcompete beneficial microflora, altering the chemical balance of the growing medium and negatively impacting plant development.

A distinctive feature of Pilobolaceae is their unique method of spore dispersal. The sporangia are highly sensitive to light (phototropic) and can be forcibly ejected over long distances. This physical mechanism allows them to spread rapidly throughout a facility, complicating containment efforts in indoor cultivation settings.

Environmental conditions that favor their growth include high humidity and temperatures typical of decomposition. If the substrate is not properly sterilized, these fungi can dominate, leading to physical crusting on the surface of the soil or compost, which prevents proper gas exchange and water absorption for the target crops.

Effective prevention and control center on the rigorous application of heat treatment protocols. The following practices are essential for management:

• Strict pasteurization of all organic substrates.
• Regular cleaning and disinfection of greenhouse surfaces and tools.
• Optimizing moisture levels to prevent excessive spore development.
• Ensuring the proper composting of manure before use in plant cultivation.