Development of a biological control method to eradicate the inoculum of copper tolerant fungi in the soil of wood products using antagonists
Wood poles impregnated with copper based wood preservatives are popular and used in the telecommunication and power supply industries all over the world because of their high strength per unit weight, low installation and maintenance costs and excellent durability. Premature failure of wood poles is often the result of wood decay caused by copper tolerant fungi. The objective of this project is to develop a biological control method that can be applied for eradicating copper tolerant fungi of the genus Poria in the soil surrounding wood products. For the purpose we will isolate a range of antagonists from soils on different sites in Europe in which early failure of wood poles are commonly encountered. Once we have isolated and identified the copper tolerant fungi we will complete a range of in intra and in vivo studies that we will enable identification of an antagonist. If this approach is successful it should be possible to drastically reduce the number of early failures of wood poles and other wood products in Europe.
Figure left: Early failure of a wood pole, which was impregnated with a chromium copper formulation. The copper tolerant fungus Poria placenta = Rhodonia placenta was isolated from the decayed wood. Pic.A: Dense, with mycelium has colonized the wood of an incubated control specimens. Pic.B: After pre-treatment with the antagonist T-Cu+ wood specimens were not colonized by Rhodonia placenta.