Figure 1.

The decay test set-up with sample positions 1–7 labelled (A) and the outline of the extract degradation assays (B). Pine heartwood (HW) extract was incubated with mycelium or extracellular fluid from Coniophora puteana and Rhodonia placenta liquid cultures (supplemented with sapwood or heartwood powder), or with Fenton reagent. Extract was also incubated with autoclaved mycelium, fresh malt extract broth (ME), or buffer to act as references for the mycelium, extracellular fluid, and Fenton reagent incubations, respectively. *An additional control sample of extracellular fluid was collected from heartwood cultures and analysed immediately without incubation to determine the concentration of solubilised extractives.