Chemical changes in organic matter after fungal colonization in a nitrogen fertilized and unfertilized Norway spruce forest

Nicolas, Cesar; Almeida, Juan P.; Ellstrom, Magnus; Bahr, Adam; Bone, Sharon E.; Rosenstock, Nicholas P.; Bargar, John R.; Tunlid, Anders; Persson, Per; Wallander, Hakan

doi:10.1007/s11104-017-3324-8

Title: Chemical changes in organic matter after fungal colonization in a nitrogen fertilized and unfertilized Norway spruce forest

Journal Article · Sat Jul 08 04:00:00 UTC 2017 · Plant and Soil

DOI: https://doi.org/10.1007/s11104-017-3324-8 · OSTI ID:1417665

Nicolas, Cesar ^[1]; Almeida, Juan P. ^[1]; Ellstrom, Magnus ^[1]; Bahr, Adam ^[1]; Bone, Sharon E. ^[2]; Rosenstock, Nicholas P. ^[1]; Bargar, John R. ^[2]; Tunlid, Anders ^[1]; Persson, Per ^[1]; Wallander, Hakan ^[1]

Lund Univ., Lund (Sweden)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

Decomposition and transformation of organic matter (OM) in forest soils are conducted by the concomitant action of saprotrophic and mycorrhizal fungi. Here, we examine chemical changes in OM after fungal colonization in nitrogen fertilized and unfertilized soils from a Norway spruce forest. Sand-filled bags amended with composted maize leaves were placed in the forest soil and harvested after 17 months. Infrared and near edge X-ray absorption fine structure spectroscopies were used to study the chemical changes in the OM. Fungal community composition of the bags was also evaluated. The proportion of ectomycorrhizal fungi declined in the fertilized plots, but the overall fungal community composition was similar between N treatments. Decomposition of the OM was, independently of the N level or soil horizon, accompanied by an increase of C/N ratio of the mesh-bag content. Furthermore, the proportions of carboxylic compounds in the incubated OM increased in the mineral horizon, while heterocyclic-N compounds decreased, especially in unfertilized plots with higher N demand from the trees.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1417665

Journal Information:: Plant and Soil, Journal Name: Plant and Soil Journal Issue: 1-2 Vol. 419; ISSN 0032-079X

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Ectomycorrhizal Cortinarius species participate in enzymatic oxidation of humus in northern forest ecosystems Bödeker, Inga T. M.; Clemmensen, Karina E.; de Boer, Wietse New Phytologist, Vol. 203, Issue 1 https://doi.org/10.1111/nph.12791	journal	April 2014
Ectomycorrhizal fungi - potential organic matter decomposers, yet not saprotrophs Lindahl, Björn D.; Tunlid, Anders New Phytologist, Vol. 205, Issue 4 https://doi.org/10.1111/nph.13201	journal	December 2014
Ectomycorrhizal fungi decompose soil organic matter using oxidative mechanisms adapted from saprotrophic ancestors Shah, Firoz; Nicolás, César; Bentzer, Johan New Phytologist, Vol. 209, Issue 4 https://doi.org/10.1111/nph.13722	journal	November 2015
Genetic regulation of nitrogen metabolism in the fungi. Marzluf, G. A. Microbiology and molecular biology reviews : MMBR, Vol. 61, Issue 1 https://doi.org/10.1128/.61.1.17-32.1997	journal	January 1997
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Anthropogenic nitrogen enrichment enhances soil carbon accumulation by impacting saprotrophs rather than ectomycorrhizal fungal activity Maaroufi, Nadia I.; Nordin, Annika; Palmqvist, Kristin Global Change Biology, Vol. 25, Issue 9 https://doi.org/10.1111/gcb.14722	journal	May 2019
Anthropogenic nitrogen enrichment enhances soil carbon accumulation by impacting saprotrophs rather than ectomycorrhizal fungal activity Maaroufi, Nadia I.; Nordin, Annika; Palmqvist, Kristin Wiley https://doi.org/10.7892/boris.132568	text	January 2019

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54 ENVIRONMENTAL SCIENCES
Fungal community composition
Infrared spectroscopy
Near-edge X-ray absorption fine structure (NEXAFS) spectroscopy
Nitrogen fertilization
Norway spruce forest
Organic matter decomposition

Title: Chemical changes in organic matter after fungal colonization in a nitrogen fertilized and unfertilized Norway spruce forest

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