Tetragoniomycetaceae

Tetragoniomycetaceae is a family of basidiomycetous fungi belonging to the order Tetragoniomycetales. While members of this family are often described as mycoparasites or epiphytes, in an agronomic context, their presence on plants can lead to physiological disorders and secondary infections, ultimately reducing the quality and marketability of agricultural products.

The disease is caused by microscopic fungi that typically parasitize other fungal organisms already affecting the host plant or develop directly on the surface tissues. This type of disease is classified as mycoparasitism or superficial epidermal damage, which compromises the plant's overall immune system.

A wide range of vegetable crops, ornamental plants, and wild species are susceptible to this fungus. Colonies of Tetragoniomycetaceae are frequently observed on plants that already exhibit high humidity or are suffering from primary infections, such as powdery mildew or rust, as the fungus utilizes these as a nutrient source.

Symptoms of infection appear as specific surface coatings, spots, or darkening of the leaf and stem surfaces. Externally, this may resemble an atypical coating similar to sooty mold or distinct spore cushions that hinder normal gas exchange and photosynthesis within the plant tissues.

• Ensuring optimal ventilation in greenhouses.
• Timely control of primary pathogens (rust and powdery mildew).
• Monitoring air humidity levels in the root zone.
• Application of broad-spectrum fungicides in cases of heavy infestation.
• Regular sanitary pruning and removal of crop residues.

The damage caused by Tetragoniomycetaceae lies not only in direct tissue injury but also in creating favorable conditions for the development of other pathogens. The degradation of fruit marketability and the loss of foliage aesthetic quality lead to significant economic losses, making prevention and maintaining plant health essential elements of crop protection.