Fungal Species: Piloderma

Fungal guild interactions slow decomposition of boreal forest pine litter and humus

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In boreal forests, different types of fungi compete with each other to break down dead plant material. This study found that the fungi living in partnership with tree roots actually slow down the decomposition of fresh pine needles, especially after droughts. However, in older, partially decomposed soil material, the fungi associated with tree roots actually speed up decomposition, while fungi associated with shrubs slow it down. These findings suggest that how quickly different types of fungi decompose forest material depends on what type of dead material they are breaking down.

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A trait spectrum linking nitrogen acquisition and carbon use of ectomycorrhizal fungi

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Different types of ectomycorrhizal fungi have evolved distinct strategies for acquiring nutrients from soil and transferring them to trees. The study proposes that these fungi can be arranged on a spectrum from ‘absorbers’ that quickly grab available nutrients in fertile forests to ‘miners’ that slowly exploit tough organic matter in poor forests. This framework explains why the same fungus behaves differently depending on soil fertility and unifies seemingly contradictory observations about fungal responses to nutrient additions.

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A trait spectrum linking nitrogen acquisition and carbon use of ectomycorrhizal fungi

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Forest mushroom fungi form partnerships with tree roots to help them get nutrients from soil. This research proposes that these fungi fall into two main types along a spectrum: ‘absorbers’ that quickly build large fungal networks to capture easily available nitrogen, and ‘miners’ that slowly grow elaborate cord systems to break down difficult organic matter and extract nitrogen. The study uses math models to show how different fungal strategies affect both how much carbon the trees provide and how much nitrogen returns to the trees.

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