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Ectomycorrhizal fun...
Ectomycorrhizal fungi integrate nitrogen mobilisation and mineral weathering in boreal forest soil
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- Mahmood, Shahid (författare)
- Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Box 7026, SE-750 07, Uppsala, Sweden
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- Fahad, Zaenab (författare)
- Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Box 7026, SE-750 07, Uppsala, Sweden
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- Bolou-Bi, Emile B. (författare)
- UFR des Sciences de la Terre et des Ressources Minières, Département des Sciences du sol, Université Felix Houphouët-Boigny, 22 BP 582, Abidjan, Côte d'Ivoire
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- King, Katharine (författare)
- Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Box 7026, SE-750 07, Uppsala, Sweden
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- Köhler, Stephan J. (författare)
- Department of Aquatic Sciences and Assessment, Soil-Water-Environment Center, Swedish University of Agricultural Sciences, Box 7050, SE-750 07, Uppsala, Sweden
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- Bishop, Kevin (författare)
- Department of Aquatic Sciences and Assessment, Soil-Water-Environment Center, Swedish University of Agricultural Sciences, Box 7050, SE-750 07, Uppsala, Sweden
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- Ekblad, Alf, 1957- (författare)
- Örebro universitet,Institutionen för naturvetenskap och teknik
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- Finlay, Roger D. (författare)
- Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Box 7026, SE-750 07, Uppsala, Sweden
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: New Phytologist. - : John Wiley & Sons. - 0028-646X .- 1469-8137.
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Tree growth in boreal forests is driven by ectomycorrhizal fungal mobilisation of organic nitrogen and mineral nutrients in soils with discrete organic and mineral horizons. However, there are no studies of how ectomycorrhizal mineral weathering and organic nitrogen mobilisation processes are integrated across the soil profile. We studied effects of organic matter (OM) availability on ectomycorrhizal functioning by altering the proportions of natural organic and mineral soil in reconstructed podzol profiles containing Pinus sylvestris plants, using 13 CO2 pulse labelling, patterns of naturally occurring stable isotopes (26 Mg and 15 N) and high-throughput DNA sequencing of fungal amplicons. Reduction in OM resulted in nitrogen limitation of plant growth and decreased allocation of photosynthetically derived carbon and mycelial growth in mineral horizons. Fractionation patterns of 26 Mg indicated that magnesium mobilisation and uptake occurred primarily in the deeper mineral horizon and was driven by carbon allocation to ectomycorrhizal mycelium. In this horizon, relative abundance of ectomycorrhizal fungi, carbon allocation and base cation mobilisation all increased with increased OM availability. Allocation of carbon through ectomycorrhizal fungi integrates organic nitrogen mobilisation and mineral weathering across soil horizons, improving the efficiency of plant nutrient acquisition. Our findings have fundamental implications for sustainable forest management and belowground carbon sequestration.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Skogsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Forest Science (hsv//eng)
Nyckelord
- Boreal forests
- carbon allocation
- carbon sequestration
- ectomycorrhizal fungi
- mineral weathering
- nitrogen mobilisation
- organic matter
- podzol horizons
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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