Postia placenta is a wood-rotting polyporous fungus that serves as a brown rot model species in laboratory wood decay tests. It has a distinctive pink or orange fertile surface and rapidly depolymerises the cellulose in wood without significantly degrading lignin. Commonly found in forest litter, especially on pine wood, they play an important role in carbon cycling.
Postia placenta is widespread in parts of North America and is a common cause of wood rot in ships, mines and timbre of buildings. Although it is important to understand the mechanisms through which the fungus degrades wood for applied uses of such materials, it has not been thoroughly investigated. Optimisation of durable wood products used in infrastructure is essential to ensure long life service and carbon storage by preventing or delaying decay by fungi.