Botryotrichum domesticum

Botryotrichum domesticum is a microscopic mold fungus characterized by its ability to thrive on various organic materials. In an agricultural context, it is primarily recognized as a saprotroph that decomposes organic matter, but it can act as a pathogen affecting crops in storage or under weakened conditions, significantly compromising the quality of agricultural products.

The fungus typically attacks seeds, grains, and stored vegetables. It is particularly prevalent in environments where plant debris is allowed to accumulate, such as greenhouses or poorly maintained storage facilities. It targets tissues that are moist or have been previously damaged by insects, mechanical handling, or physiological stress.

The visual symptoms of a Botryotrichum domesticum infection include the emergence of a fluffy, cotton-like mycelial growth. Initially, the mold appears white, but as it matures and produces conidia, it shifts to a grayish or brownish hue. In stored seeds, this infection leads to reduced germination rates, discoloration, and a characteristic musty odor.

Environmental conditions are key to its proliferation. The fungus thrives in temperatures between +15°C and +25°C, coupled with high relative humidity levels exceeding 80%. Stagnant air in storage units facilitates the rapid spread of spores, which are easily carried by air currents to adjacent healthy plant materials, potentially leading to significant economic losses.

Control and prevention depend heavily on sanitation and climate management. It is essential to keep storage facilities dry and well-ventilated to prevent moisture accumulation. Furthermore, disinfecting storage equipment and utilizing appropriate seed treatments can effectively inhibit the development of the fungus, ensuring the long-term viability of the stored crop.