The giant polypore can grow between 50 and 200 cm in size, belongs to the bracket fungi and is the causative agent of white rot.
Also known as:
Black-staining polypore
Giant polypore (Meripilus giganteus), mushroom that can grow between 50 and 200 cm in size and belongs to the bracket fungi. The giant polypore is multi-capped and is the causative agent of white rot in deciduous trees and (sometimes) conifers: the fungus then breaks down lignin in the wood. Lignin combines with cellulose to form wood. When lignin is broken down, the tree loses strength because only cellulose remains. As a result of the white rot, the tree becomes susceptible to trunk breakage.
A dead root is usually the spot infected by the fungus. White rot is limited to the roots. Rotting of the roots disturbs the water balance, which in particular prevents the crown from becoming full of foliage. If the roots are severely affected, the tree may blow over in a strong autumn storm.
White rot can be either white or brown.
Where to find
- Beech
- Oak
- Horse Chestnut
- Deciduous trees
- Conifers, pine, larch, Norway spruce
Control
After infestation by the giant polypore, it is not possible to remove the fungus.
Prevention
Does not apply.
