Contrasting effects of ectomycorrhizal fungi on early and late stage decomposition in a boreal forest.
Identifieur interne : 000860 ( Main/Corpus ); précédent : 000859; suivant : 000861Contrasting effects of ectomycorrhizal fungi on early and late stage decomposition in a boreal forest.
Auteurs : Erica Sterkenburg ; Karina E. Clemmensen ; Alf Ekblad ; Roger D. Finlay ; Björn D. LindahlSource :
- The ISME journal [ 1751-7370 ] ; 2018.
English descriptors
- KwdEn :
- MESH :
- chemical : Nitrogen.
- metabolism : Mycorrhizae.
- Soil Microbiology, Taiga.
Abstract
Symbiotic ectomycorrhizal fungi have received increasing attention as regulators of below-ground organic matter storage. They are proposed to promote organic matter accumulation by suppressing saprotrophs, but have also been suggested to play an active role in decomposition themselves. Here we show that exclusion of tree roots and associated ectomycorrhizal fungi in a boreal forest increased decomposition of surface litter by 11% by alleviating nitrogen limitation of saprotrophs-a "Gadgil effect". At the same time, root exclusion decreased Mn-peroxidase activity in the deeper mor layer by 91%. Our results show that ectomycorrhizal fungi may hamper short-term litter decomposition, but also support a crucial role of ectomycorrhizal fungi in driving long-term organic matter oxidation. These observations stress the importance of ectomycorrhizal fungi in regulation of below-ground organic matter accumulation. By different mechanisms they may either hamper or stimulate decomposition, depending upon stage of decomposition and location in the soil profile.
DOI: 10.1038/s41396-018-0181-2
PubMed: 29880913
PubMed Central: PMC6092328
Links to Exploration step
pubmed:29880913Le document en format XML
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Clemmensen</name><affiliation><nlm:affiliation>Swedish University of Agricultural Sciences, Uppsala BioCenter, Department of Forest Mycology and Plant Pathology, Box 7026, SE-750 07, Uppsala, Sweden.</nlm:affiliation></affiliation></author><author><name sortKey="Ekblad, Alf" sort="Ekblad, Alf" uniqKey="Ekblad A" first="Alf" last="Ekblad">Alf Ekblad</name><affiliation><nlm:affiliation>School of Science and Technology, Örebro University, SE-701 85, Örebro, Sweden.</nlm:affiliation></affiliation></author><author><name sortKey="Finlay, Roger D" sort="Finlay, Roger D" uniqKey="Finlay R" first="Roger D" last="Finlay">Roger D. Finlay</name><affiliation><nlm:affiliation>Swedish University of Agricultural Sciences, Uppsala BioCenter, Department of Forest Mycology and Plant Pathology, Box 7026, SE-750 07, Uppsala, Sweden.</nlm:affiliation></affiliation></author><author><name sortKey="Lindahl, Bjorn D" sort="Lindahl, Bjorn D" uniqKey="Lindahl B" first="Björn D" last="Lindahl">Björn D. Lindahl</name><affiliation><nlm:affiliation>Swedish University of Agricultural Sciences, Department of Soil and Environment, Box 7014, SE-750 07, Uppsala, Sweden. 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Clemmensen</name><affiliation><nlm:affiliation>Swedish University of Agricultural Sciences, Uppsala BioCenter, Department of Forest Mycology and Plant Pathology, Box 7026, SE-750 07, Uppsala, Sweden.</nlm:affiliation></affiliation></author><author><name sortKey="Ekblad, Alf" sort="Ekblad, Alf" uniqKey="Ekblad A" first="Alf" last="Ekblad">Alf Ekblad</name><affiliation><nlm:affiliation>School of Science and Technology, Örebro University, SE-701 85, Örebro, Sweden.</nlm:affiliation></affiliation></author><author><name sortKey="Finlay, Roger D" sort="Finlay, Roger D" uniqKey="Finlay R" first="Roger D" last="Finlay">Roger D. Finlay</name><affiliation><nlm:affiliation>Swedish University of Agricultural Sciences, Uppsala BioCenter, Department of Forest Mycology and Plant Pathology, Box 7026, SE-750 07, Uppsala, Sweden.</nlm:affiliation></affiliation></author><author><name sortKey="Lindahl, Bjorn D" sort="Lindahl, Bjorn D" uniqKey="Lindahl B" first="Björn D" last="Lindahl">Björn D. Lindahl</name><affiliation><nlm:affiliation>Swedish University of Agricultural Sciences, Department of Soil and Environment, Box 7014, SE-750 07, Uppsala, Sweden. Bjorn.Lindahl@slu.se.</nlm:affiliation></affiliation></author></analytic><series><title level="j">The ISME journal</title><idno type="eISSN">1751-7370</idno><imprint><date when="2018" type="published">2018</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Mycorrhizae (metabolism)</term><term>Nitrogen (MeSH)</term><term>Soil Microbiology (MeSH)</term><term>Taiga (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Nitrogen</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Mycorrhizae</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Soil Microbiology</term><term>Taiga</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Symbiotic ectomycorrhizal fungi have received increasing attention as regulators of below-ground organic matter storage. They are proposed to promote organic matter accumulation by suppressing saprotrophs, but have also been suggested to play an active role in decomposition themselves. Here we show that exclusion of tree roots and associated ectomycorrhizal fungi in a boreal forest increased decomposition of surface litter by 11% by alleviating nitrogen limitation of saprotrophs-a "Gadgil effect". At the same time, root exclusion decreased Mn-peroxidase activity in the deeper mor layer by 91%. Our results show that ectomycorrhizal fungi may hamper short-term litter decomposition, but also support a crucial role of ectomycorrhizal fungi in driving long-term organic matter oxidation. These observations stress the importance of ectomycorrhizal fungi in regulation of below-ground organic matter accumulation. By different mechanisms they may either hamper or stimulate decomposition, depending upon stage of decomposition and location in the soil profile.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Curated" Owner="NLM"><PMID Version="1">29880913</PMID><DateCompleted><Year>2019</Year><Month>04</Month><Day>29</Day></DateCompleted><DateRevised><Year>2019</Year><Month>04</Month><Day>29</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1751-7370</ISSN><JournalIssue CitedMedium="Internet"><Volume>12</Volume><Issue>9</Issue><PubDate><Year>2018</Year><Month>09</Month></PubDate></JournalIssue><Title>The ISME journal</Title><ISOAbbreviation>ISME J</ISOAbbreviation></Journal><ArticleTitle>Contrasting effects of ectomycorrhizal fungi on early and late stage decomposition in a boreal forest.</ArticleTitle><Pagination><MedlinePgn>2187-2197</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1038/s41396-018-0181-2</ELocationID><Abstract><AbstractText>Symbiotic ectomycorrhizal fungi have received increasing attention as regulators of below-ground organic matter storage. They are proposed to promote organic matter accumulation by suppressing saprotrophs, but have also been suggested to play an active role in decomposition themselves. Here we show that exclusion of tree roots and associated ectomycorrhizal fungi in a boreal forest increased decomposition of surface litter by 11% by alleviating nitrogen limitation of saprotrophs-a "Gadgil effect". At the same time, root exclusion decreased Mn-peroxidase activity in the deeper mor layer by 91%. Our results show that ectomycorrhizal fungi may hamper short-term litter decomposition, but also support a crucial role of ectomycorrhizal fungi in driving long-term organic matter oxidation. These observations stress the importance of ectomycorrhizal fungi in regulation of below-ground organic matter accumulation. By different mechanisms they may either hamper or stimulate decomposition, depending upon stage of decomposition and location in the soil profile.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Sterkenburg</LastName><ForeName>Erica</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Swedish University of Agricultural Sciences, Uppsala BioCenter, Department of Forest Mycology and Plant Pathology, Box 7026, SE-750 07, Uppsala, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Clemmensen</LastName><ForeName>Karina E</ForeName><Initials>KE</Initials><AffiliationInfo><Affiliation>Swedish University of Agricultural Sciences, Uppsala BioCenter, Department of Forest Mycology and Plant Pathology, Box 7026, SE-750 07, Uppsala, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ekblad</LastName><ForeName>Alf</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>School of Science and Technology, Örebro University, SE-701 85, Örebro, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Finlay</LastName><ForeName>Roger D</ForeName><Initials>RD</Initials><Identifier Source="ORCID">http://orcid.org/0000-0002-3652-2930</Identifier><AffiliationInfo><Affiliation>Swedish University of Agricultural Sciences, Uppsala BioCenter, Department of Forest Mycology and Plant Pathology, Box 7026, SE-750 07, Uppsala, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lindahl</LastName><ForeName>Björn D</ForeName><Initials>BD</Initials><Identifier Source="ORCID">http://orcid.org/0000-0002-3384-4547</Identifier><AffiliationInfo><Affiliation>Swedish University of Agricultural Sciences, Department of Soil and Environment, Box 7014, SE-750 07, Uppsala, Sweden. Bjorn.Lindahl@slu.se.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2018</Year><Month>06</Month><Day>07</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>ISME J</MedlineTA><NlmUniqueID>101301086</NlmUniqueID><ISSNLinking>1751-7362</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009584" 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