Mycological Progress (2017) 16, 513-519

Fredrik Carlsson, Mattias Edman and Bengt Gunnar Jonsson (2017)
Increased CO₂ evolution caused by heat treatment in wood-decaying fungi
Mycological Progress 16 (5), 513-519
Abstract: Wood-decaying fungi are regarded as the main decomposers of woody debris in boreal forests. Given that fungal respiration makes a significant contribution to terrestrial carbon flows, it is important to understand how the wood-decaying fungal metabolism is regulated in relation to different environmental conditions and disturbances. In the present study, we investigated the effect of temperature stress on wood decomposition rate in 18 species of wood-decaying fungi, representing a broad range of species–habitat associations. Heat shock duration and temperature were calibrated to match the conditions of a forest fire. We found a general increase in fungal decay rate after heat shock; the response was more pronounced in species associated with fire-prone forests. The underlying mechanism is unclear, but possibly relates to an up-regulation at the cellular level in response to heat shock. Our results show that the decomposition rate of dead wood can be strongly affected by environmental triggers.
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Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Gloeophyllum sepiarium	Pine (Pinus)
	Antrodia sinuosa	Pine (Pinus)
	Phellinus nigrolimitatus	Spruce (Picea)
	Heterobasidion parviporum	Spruce (Picea)
	Phlebiopsis gigantea	Pine (Pinus)
	Fomitopsis pinicola	Pine (Pinus)