Ceriporiopsis gilvescens

Ceriporiopsis gilvescens is a wood-decaying fungus belonging to the Polyporales order. In agronomy and arboriculture, it is identified as an agent of white rot, a disease that causes the decomposition of lignin and cellulose, significantly undermining the structural integrity of hardwoods and fruit-bearing trees found in orchard environments.

The host range of this pathogen primarily includes a wide variety of broad-leaved trees. It is frequently observed in neglected orchards where fruit trees have sustained mechanical trauma from pruning, harsh weather conditions, or pest activity. The fungus exploits these openings to colonize the xylem, gradually spreading its mycelium through the woody tissues.

Symptomatology is marked by the softening and bleaching of the wood, which takes on a fibrous appearance as the decay progresses. On the exterior of the bark, you may observe the formation of thin, crust-like fruiting bodies that exhibit a distinct yellowish or creamy hue. These structures are the reproductive organs, producing spores that facilitate the spread of the disease to neighboring trees.

Environmental conditions play a critical role in the development and spread of Ceriporiopsis gilvescens. High humidity levels, combined with moderate ambient temperatures, provide the optimal climate for sporulation. Spores are primarily disseminated by wind, reaching new hosts that have susceptible wounds, such as unhealed pruning cuts or areas damaged by frost and insects.

Management and protection strategies are centered on strict orchard hygiene. Recommendations include:

• Regular inspection of bark and branches for signs of decay.
• Immediate removal and disposal of infected wood material.
• Sterilization of pruning tools to prevent cross-contamination.
• Application of wound sealants and protective paints to large cuts.
• Maintaining tree vitality through appropriate nutrition and irrigation.