Epigloeaceae

The Epigloeaceae family comprises a group of fungi known as lichenicolous, meaning they live in association with lichens. In an agricultural and forestry context, these fungi are primarily observed on the bark of trees where lichen colonies have established themselves. They are specialized organisms that occupy a distinct niche within the plant phyllosphere.

The causal agents are microscopic fungi that form perithecia within the thallus of the host lichen. The biology of Epigloeaceae is defined by their parasitic nature towards lichenized fungi. By colonizing the lichen, they disrupt its integrity, which can lead to the localized death of the lichen cover on tree trunks and branches.

These fungi affect a variety of woody plants that serve as substrates for lichen growth. Symptoms are typically manifested as tiny dark spots or specks on the lichen surface. While not directly infecting the tree tissues, the presence of these fungi indicates a high-humidity environment that may favor other, more dangerous bark pathogens.

Development and spread are facilitated by consistent moisture, high humidity, and poor airflow within the tree canopy. Shade-grown orchards or dense forest stands are particularly susceptible to the colonization of these organisms. They thrive in environments where the bark surface remains damp for extended periods throughout the year.

The harm caused by Epigloeaceae is largely indirect. By degrading the lichen layer, they may affect the micro-environment of the bark. However, their presence often signals that the tree is in a dormant or unmanaged state, prompting the need for improved horticultural practices to maintain long-term tree health and hygiene.

• Pruning trees to improve air circulation and sunlight penetration.
• Implementing regular bark cleaning to remove excessive lichen growth.
• Applying preventive antifungal washes to tree trunks during dormancy.
• Maintaining proper tree spacing to reduce humidity levels in the orchard.
• Monitoring bark condition to identify early signs of associated pathogens.