Ectomycorrhizal fungi - potential organic matter decomposers, yet not saprotrophs.
Identifieur interne : 001612 ( Main/Exploration ); précédent : 001611; suivant : 001613Ectomycorrhizal fungi - potential organic matter decomposers, yet not saprotrophs.
Auteurs : Björn D. Lindahl [Suède] ; Anders TunlidSource :
- The New phytologist [ 1469-8137 ] ; 2015.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbon, Organic Chemicals.
- metabolism : Mycorrhizae.
- Gene Expression Profiling, Genomics, Spectrum Analysis.
Abstract
Although hypothesized for many years, the involvement of ectomycorrhizal fungi in decomposition of soil organic matter remains controversial and has not yet been fully acknowledged as an important factor in the regulation of soil carbon (C) storage. Here, we review recent findings, which support the view that some ectomycorrhizal fungi have the capacity to oxidize organic matter, either by 'brown-rot' Fenton chemistry or using 'white-rot' peroxidases. We propose that ectomycorrhizal fungi benefit from organic matter decomposition primarily through increased nitrogen mobilization rather than through release of metabolic C and question the view that ectomycorrhizal fungi may act as facultative saprotrophs. Finally, we discuss how mycorrhizal decomposition may influence organic matter storage in soils and mediate responses of ecosystem C sequestration to environmental changes.
DOI: 10.1111/nph.13201
PubMed: 25524234
Affiliations:
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