Gloiothele lactescens

Gloiothele lactescens is a wood-decaying basidiomycete fungus responsible for white rot in various hardwood species. As an active saprotroph and occasional pathogen, it plays a significant role in the natural decomposition of wood by degrading lignin and cellulose, which leads to the structural breakdown of the host tissue.

The host range of this fungus primarily includes deciduous trees such as oak, birch, and beech. The fungus typically colonizes wood through existing wounds, broken branches, or areas damaged by pests. While it often thrives on decaying logs, its presence on live trees can lead to significant decay in the heartwood or sapwood.

The visible symptoms of infection are primarily the fruiting bodies found on the bark or wood surface. These fruiting bodies appear as resupinate, waxy, or crust-like patches, usually cream or whitish in color. The infected wood undergoes a transformation, becoming light-colored, soft, and fibrous as the fungus systematically breaks down the cell walls.

Environmental conditions conducive to the spread of this fungus involve high humidity and mild temperatures. Excessive shade and poor air circulation within a plantation or forest create an ideal environment for the spores to germinate and for the mycelium to expand across the wood surface, facilitating rapid colonization of susceptible timber.

Effective management and protection against Gloiothele lactescens focus on preventing the entry of the fungus into trees. Key strategies include practicing rigorous sanitation by removing and burning infected wood debris, protecting trees from mechanical injuries, and applying protective sealants to pruning wounds. Consistent forest management helps minimize the buildup of inoculum, thus reducing the risk of spread to healthy tree populations.