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Soil organic matter decomposition mechanisms in ectomycorrhizal fungi

Tunlid, Anders LU ; Floudas, Dimitrios LU ; Koide, Roger and Rineau, François LU (2016) In Molecular Mycorrhizal Symbiosis p.257-275
Abstract

In boreal forests, ectomycorrhizal (ECM) fungi are found in soil layers containing decomposed litter and humus-rich soil organic matter (SOM). This chapter summarizes the present understanding of the mechanisms for oxidative decomposition of SOM and the hydrolysis and mobilization of organic N and P sources by ECM fungi. It discusses how these processes may influence the formation and stability of SOM, and the interactions with saprotrophic microorganisms in forest ecosystems. The chapter gives a brief introduction to litter decomposition mechanisms in saprotrophic fungi. To investigate experimentally the capacity of ECM fungi to decompose humic-rich SOM and the mechanisms underlying this decomposition, a series of experiments have been... (More)

In boreal forests, ectomycorrhizal (ECM) fungi are found in soil layers containing decomposed litter and humus-rich soil organic matter (SOM). This chapter summarizes the present understanding of the mechanisms for oxidative decomposition of SOM and the hydrolysis and mobilization of organic N and P sources by ECM fungi. It discusses how these processes may influence the formation and stability of SOM, and the interactions with saprotrophic microorganisms in forest ecosystems. The chapter gives a brief introduction to litter decomposition mechanisms in saprotrophic fungi. To investigate experimentally the capacity of ECM fungi to decompose humic-rich SOM and the mechanisms underlying this decomposition, a series of experiments have been conducted using Paxillus involutus as a "model" species. ECM fungi have evolved from diverse nutritional backgrounds, including litter decomposers and WR and BR wood decayers. During these transitions, ECM lineages lost many genes related to saprotrophy. There is evidence that some ECM employ the Fenton reaction during SOM decomposition.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Ectomycorrhizal fungi, Forest ecosystems, Molecular mycorrhizal symbiosis, Oxidative decomposition, Paxillus involutus, Saprotrophic fungi, Soil organic matter decomposition mechanisms
in
Molecular Mycorrhizal Symbiosis
pages
19 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:85018284549
ISBN
9781118951446
9781118951415
DOI
10.1002/9781118951446.ch15
language
English
LU publication?
yes
id
97fe3353-1fce-4465-b61b-c11bb10fcff1
date added to LUP
2017-05-24 14:27:30
date last changed
2017-06-08 13:36:30
@inbook{97fe3353-1fce-4465-b61b-c11bb10fcff1,
  abstract     = {<p>In boreal forests, ectomycorrhizal (ECM) fungi are found in soil layers containing decomposed litter and humus-rich soil organic matter (SOM). This chapter summarizes the present understanding of the mechanisms for oxidative decomposition of SOM and the hydrolysis and mobilization of organic N and P sources by ECM fungi. It discusses how these processes may influence the formation and stability of SOM, and the interactions with saprotrophic microorganisms in forest ecosystems. The chapter gives a brief introduction to litter decomposition mechanisms in saprotrophic fungi. To investigate experimentally the capacity of ECM fungi to decompose humic-rich SOM and the mechanisms underlying this decomposition, a series of experiments have been conducted using Paxillus involutus as a "model" species. ECM fungi have evolved from diverse nutritional backgrounds, including litter decomposers and WR and BR wood decayers. During these transitions, ECM lineages lost many genes related to saprotrophy. There is evidence that some ECM employ the Fenton reaction during SOM decomposition.</p>},
  author       = {Tunlid, Anders and Floudas, Dimitrios and Koide, Roger and Rineau, François},
  isbn         = {9781118951446},
  keyword      = {Ectomycorrhizal fungi,Forest ecosystems,Molecular mycorrhizal symbiosis,Oxidative decomposition,Paxillus involutus,Saprotrophic fungi,Soil organic matter decomposition mechanisms},
  language     = {eng},
  month        = {10},
  pages        = {257--275},
  publisher    = {Wiley-Blackwell},
  series       = {Molecular Mycorrhizal Symbiosis},
  title        = {Soil organic matter decomposition mechanisms in ectomycorrhizal fungi},
  url          = {http://dx.doi.org/10.1002/9781118951446.ch15},
  year         = {2016},
}