Boberg, Johanna
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
Abstract
Fungi, especially basidiomycetous litter decomposers, are pivotal to the turnover of soil organic matter in forest soils. Many litter decomposing fungi have a well-developed capacity to translocate resources in their mycelia, a feature that may significantly affect carbon (C) and nitrogen (N) dynamics in decomposing litter. In an eight-month long laboratory study we investigated how the external availability of N affected the decomposition of Scots pine needles, fungal biomass production, N retention and N-mineralization by two litter decomposing fungi - Marasmius androsaceus and Mycena epipterygia. Glycine additions had a general, positive effect on fungal biomass production and increased accumulated needle mass loss after 8 months, suggesting that low N availability may limit fungal growth and activity in decomposing pine litter. Changes in the needle N pool reflected the dynamics of the fungal mycelium. During late decomposition stages, redistribution of mycelium and N out from the decomposed needles was observed for M. epipterygia, suggesting autophagous self degradation. (C) 2011 Elsevier Ltd and The British Mycological Society. All rights reserved.
Keywords
C-use efficiency; Fungal biomass; Fungal translocation; Litter decomposition; N-mineralization; Nutrient cycling; Pinus sylvestris
Published in
Fungal Ecology
2011, volume: 4, number: 6, pages: 408-416
Publisher: ELSEVIER SCI LTD
SLU Authors
Näsholm, Torgny
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
Finlay, Roger
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
Stenlid, Jan
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
Lindahl, Björn
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
UKÄ Subject classification
Ecology
Publication identifier
- DOI: https://doi.org/10.1016/j.funeco.2011.03.004
Permanent link to this page (URI)
https://res.slu.se/id/publ/58506