Pleuroflammula dussii

Pleuroflammula dussii is a fungal species belonging to the Strophariaceae family, which acts as a saprotrophic or opportunistic parasitic pathogen under specific ecological conditions. Within agricultural and forestry contexts, this fungus is recognized as a wood-decaying organism that can lead to the structural weakening and eventual mortality of trees that are already stressed or damaged.

The pathogen primarily affects broad-leaved tree species, colonizing the tissues of the stem and root systems. Trees situated in high-humidity environments are particularly vulnerable, especially those that have suffered physical bark injuries or previous pest attacks, which provide entry points for the fungal mycelium to penetrate the host's internal structure.

Typical symptoms of infection include the emergence of fungal fruiting bodies on the bark surface, structural degradation of the wood (softening and rot), and a visible decline in the host plant's vigor. Externally, this often manifests as premature leaf chlorosis, stunted shoot development, and a significant reduction in annual growth rates.

The development of the fungus is promoted by high ambient humidity, waterlogged soil conditions, and poor forest hygiene. Spore dispersal occurs primarily through air currents and splashing water, while healthy trees typically become infected through small fissures, pruning wounds, or areas of tissue damage that compromise the plant's natural defenses.

Preventative and control strategies center on strict adherence to forest management practices. It is crucial to perform regular sanitary pruning of infected branches, remove standing deadwood, and prevent mechanical injury to tree trunks. When widespread infestation occurs in nurseries, specialized fungicide treatments are applied to inhibit spore germination and limit the spread of the pathogen.

• Routine monitoring of tree bark and trunk health.
• Sanitary removal and disposal of infected wood material.
• Maintaining proper drainage to avoid excessive moisture.
• Applying antiseptic treatments to pruning wounds.