Coremiella

Coremiella is a genus of fungi comprising pathogens capable of affecting a wide range of agricultural and ornamental crops. Most often, this pathogen appears as a secondary agent or saprotroph, but under certain conditions, it exhibits pronounced pathogenic activity, causing rot in plant tissues and a significant decrease in product quality.

The primary type of disease caused by members of this genus includes superficial mycoses, fruit rots, and seed infections. The pathogen belongs to the imperfect fungi (deuteromycetes). A characteristic biological feature is the formation of conidiophores gathered into dense bundles called coremia, which facilitates rapid spore dispersal.

The list of affected crops includes various vegetables, cereals, and fruit-bearing plants. The disease often manifests during storage, affecting fruits, bulbs, and root vegetables. Furthermore, Coremiella can be found on vegetative plant parts weakened by other diseases, pests, or unfavorable environmental conditions.

Symptoms of infection usually include the appearance of a specific grayish or olive-colored coating on the surface of the affected organs. The plant tissues under the coating become soft and develop a watery consistency, eventually leading to complete tissue destruction. In cases of seed infection, germination energy and viability are reduced, leading to sparse plant stands.

Preventive measures are critical to stop the spread of the infection. These include crop rotation, proper disinfection of storage facilities, and humidity control during harvest storage. Effective protection includes:

• Using healthy seed material and seed treatment.
• Ensuring optimal aeration in storage facilities.
• Timely removal and destruction of plant debris.
• Application of fungicides upon detection of the first signs of the disease in the field.