Are ectomycorrhizal fungi alleviating or aggravating nitrogen limitation of tree growth in boreal forests?
Identifieur interne : 001D36 ( Main/Corpus ); précédent : 001D35; suivant : 001D37Are ectomycorrhizal fungi alleviating or aggravating nitrogen limitation of tree growth in boreal forests?
Auteurs : Torgny N Sholm ; Peter Högberg ; Oskar Franklin ; Daniel Metcalfe ; Sonja G. Keel ; Catherine Campbell ; Vaughan Hurry ; Sune Linder ; Mona N. HögbergSource :
- The New phytologist [ 1469-8137 ] ; 2013.
English descriptors
- KwdEn :
- Atmosphere (chemistry), Carbon (metabolism), Carbon Isotopes (MeSH), Models, Biological (MeSH), Mycorrhizae (drug effects), Mycorrhizae (physiology), Nitrogen (pharmacology), Nitrogen Isotopes (MeSH), Plant Roots (microbiology), Soil Microbiology (MeSH), Trees (drug effects), Trees (growth & development), Trees (microbiology).
- MESH :
- chemical , metabolism : Carbon.
- chemistry : Atmosphere.
- drug effects : Mycorrhizae, Trees.
- growth & development : Trees.
- microbiology : Plant Roots, Trees.
- chemical , pharmacology : Nitrogen.
- physiology : Mycorrhizae.
- chemical : Carbon Isotopes, Models, Biological, Nitrogen Isotopes, Soil Microbiology.
Abstract
Symbioses between plant roots and mycorrhizal fungi are thought to enhance plant uptake of nutrients through a favourable exchange for photosynthates. Ectomycorrhizal fungi are considered to play this vital role for trees in nitrogen (N)-limited boreal forests. We followed symbiotic carbon (C)-N exchange in a large-scale boreal pine forest experiment by tracing (13) CO(2) absorbed through tree photosynthesis and (15) N injected into a soil layer in which ectomycorrhizal fungi dominate the microbial community. We detected little (15) N in tree canopies, but high levels in soil microbes and in mycorrhizal root tips, illustrating effective soil N immobilization, especially in late summer, when tree belowground C allocation was high. Additions of N fertilizer to the soil before labelling shifted the incorporation of (15) N from soil microbes and root tips to tree foliage. These results were tested in a model for C-N exchange between trees and mycorrhizal fungi, suggesting that ectomycorrhizal fungi transfer small fractions of absorbed N to trees under N-limited conditions, but larger fractions if more N is available. We suggest that greater allocation of C from trees to ectomycorrhizal fungi increases N retention in soil mycelium, driving boreal forests towards more severe N limitation at low N supply.
DOI: 10.1111/nph.12139
PubMed: 23356503
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pubmed:23356503Le document en format XML
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Keel</name></author><author><name sortKey="Campbell, Catherine" sort="Campbell, Catherine" uniqKey="Campbell C" first="Catherine" last="Campbell">Catherine Campbell</name></author><author><name sortKey="Hurry, Vaughan" sort="Hurry, Vaughan" uniqKey="Hurry V" first="Vaughan" last="Hurry">Vaughan Hurry</name></author><author><name sortKey="Linder, Sune" sort="Linder, Sune" uniqKey="Linder S" first="Sune" last="Linder">Sune Linder</name></author><author><name sortKey="Hogberg, Mona N" sort="Hogberg, Mona N" uniqKey="Hogberg M" first="Mona N" last="Högberg">Mona N. Högberg</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2013">2013</date><idno type="RBID">pubmed:23356503</idno><idno type="pmid">23356503</idno><idno type="doi">10.1111/nph.12139</idno><idno type="wicri:Area/Main/Corpus">001D36</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">001D36</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Are ectomycorrhizal fungi alleviating or aggravating nitrogen limitation of tree growth in boreal forests?</title><author><name sortKey="N Sholm, Torgny" sort="N Sholm, Torgny" uniqKey="N Sholm T" first="Torgny" last="N Sholm">Torgny N Sholm</name><affiliation><nlm:affiliation>Department of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), SE-901 83, Umeå, Sweden. torgny.nasholm@slu.se</nlm:affiliation></affiliation></author><author><name sortKey="Hogberg, Peter" sort="Hogberg, Peter" uniqKey="Hogberg P" first="Peter" last="Högberg">Peter Högberg</name></author><author><name sortKey="Franklin, Oskar" sort="Franklin, Oskar" uniqKey="Franklin O" first="Oskar" last="Franklin">Oskar Franklin</name></author><author><name sortKey="Metcalfe, Daniel" sort="Metcalfe, Daniel" uniqKey="Metcalfe D" first="Daniel" last="Metcalfe">Daniel Metcalfe</name></author><author><name sortKey="Keel, Sonja G" sort="Keel, Sonja G" uniqKey="Keel S" first="Sonja G" last="Keel">Sonja G. Keel</name></author><author><name sortKey="Campbell, Catherine" sort="Campbell, Catherine" uniqKey="Campbell C" first="Catherine" last="Campbell">Catherine Campbell</name></author><author><name sortKey="Hurry, Vaughan" sort="Hurry, Vaughan" uniqKey="Hurry V" first="Vaughan" last="Hurry">Vaughan Hurry</name></author><author><name sortKey="Linder, Sune" sort="Linder, Sune" uniqKey="Linder S" first="Sune" last="Linder">Sune Linder</name></author><author><name sortKey="Hogberg, Mona N" sort="Hogberg, Mona N" uniqKey="Hogberg M" first="Mona N" last="Högberg">Mona N. Högberg</name></author></analytic><series><title level="j">The New phytologist</title><idno type="eISSN">1469-8137</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Atmosphere (chemistry)</term><term>Carbon (metabolism)</term><term>Carbon Isotopes (MeSH)</term><term>Models, Biological (MeSH)</term><term>Mycorrhizae (drug effects)</term><term>Mycorrhizae (physiology)</term><term>Nitrogen (pharmacology)</term><term>Nitrogen Isotopes (MeSH)</term><term>Plant Roots (microbiology)</term><term>Soil Microbiology (MeSH)</term><term>Trees (drug effects)</term><term>Trees (growth & development)</term><term>Trees (microbiology)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Atmosphere</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Mycorrhizae</term><term>Trees</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Trees</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Plant Roots</term><term>Trees</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Nitrogen</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Mycorrhizae</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Carbon Isotopes</term><term>Models, Biological</term><term>Nitrogen Isotopes</term><term>Soil Microbiology</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Symbioses between plant roots and mycorrhizal fungi are thought to enhance plant uptake of nutrients through a favourable exchange for photosynthates. Ectomycorrhizal fungi are considered to play this vital role for trees in nitrogen (N)-limited boreal forests. We followed symbiotic carbon (C)-N exchange in a large-scale boreal pine forest experiment by tracing (13) CO(2) absorbed through tree photosynthesis and (15) N injected into a soil layer in which ectomycorrhizal fungi dominate the microbial community. We detected little (15) N in tree canopies, but high levels in soil microbes and in mycorrhizal root tips, illustrating effective soil N immobilization, especially in late summer, when tree belowground C allocation was high. Additions of N fertilizer to the soil before labelling shifted the incorporation of (15) N from soil microbes and root tips to tree foliage. These results were tested in a model for C-N exchange between trees and mycorrhizal fungi, suggesting that ectomycorrhizal fungi transfer small fractions of absorbed N to trees under N-limited conditions, but larger fractions if more N is available. We suggest that greater allocation of C from trees to ectomycorrhizal fungi increases N retention in soil mycelium, driving boreal forests towards more severe N limitation at low N supply.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">23356503</PMID><DateCompleted><Year>2013</Year><Month>08</Month><Day>07</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1469-8137</ISSN><JournalIssue CitedMedium="Internet"><Volume>198</Volume><Issue>1</Issue><PubDate><Year>2013</Year><Month>Apr</Month></PubDate></JournalIssue><Title>The New phytologist</Title><ISOAbbreviation>New Phytol</ISOAbbreviation></Journal><ArticleTitle>Are ectomycorrhizal fungi alleviating or aggravating nitrogen limitation of tree growth in boreal forests?</ArticleTitle><Pagination><MedlinePgn>214-21</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/nph.12139</ELocationID><Abstract><AbstractText>Symbioses between plant roots and mycorrhizal fungi are thought to enhance plant uptake of nutrients through a favourable exchange for photosynthates. Ectomycorrhizal fungi are considered to play this vital role for trees in nitrogen (N)-limited boreal forests. We followed symbiotic carbon (C)-N exchange in a large-scale boreal pine forest experiment by tracing (13) CO(2) absorbed through tree photosynthesis and (15) N injected into a soil layer in which ectomycorrhizal fungi dominate the microbial community. We detected little (15) N in tree canopies, but high levels in soil microbes and in mycorrhizal root tips, illustrating effective soil N immobilization, especially in late summer, when tree belowground C allocation was high. Additions of N fertilizer to the soil before labelling shifted the incorporation of (15) N from soil microbes and root tips to tree foliage. These results were tested in a model for C-N exchange between trees and mycorrhizal fungi, suggesting that ectomycorrhizal fungi transfer small fractions of absorbed N to trees under N-limited conditions, but larger fractions if more N is available. We suggest that greater allocation of C from trees to ectomycorrhizal fungi increases N retention in soil mycelium, driving boreal forests towards more severe N limitation at low N supply.</AbstractText><CopyrightInformation>© 2013 The Authors. New Phytologist © 2013 New Phytologist Trust.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Näsholm</LastName><ForeName>Torgny</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>Department of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), SE-901 83, Umeå, Sweden. torgny.nasholm@slu.se</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Högberg</LastName><ForeName>Peter</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>Franklin</LastName><ForeName>Oskar</ForeName><Initials>O</Initials></Author><Author ValidYN="Y"><LastName>Metcalfe</LastName><ForeName>Daniel</ForeName><Initials>D</Initials></Author><Author ValidYN="Y"><LastName>Keel</LastName><ForeName>Sonja G</ForeName><Initials>SG</Initials></Author><Author ValidYN="Y"><LastName>Campbell</LastName><ForeName>Catherine</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Hurry</LastName><ForeName>Vaughan</ForeName><Initials>V</Initials></Author><Author ValidYN="Y"><LastName>Linder</LastName><ForeName>Sune</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Högberg</LastName><ForeName>Mona N</ForeName><Initials>MN</Initials></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>2013</Year><Month>01</Month><Day>29</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>New Phytol</MedlineTA><NlmUniqueID>9882884</NlmUniqueID><ISSNLinking>0028-646X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D002247">Carbon Isotopes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D009587">Nitrogen Isotopes</NameOfSubstance></Chemical><Chemical><RegistryNumber>7440-44-0</RegistryNumber><NameOfSubstance UI="D002244">Carbon</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001272" MajorTopicYN="N">Atmosphere</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002244" MajorTopicYN="N">Carbon</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002247" MajorTopicYN="N">Carbon Isotopes</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008954" MajorTopicYN="N">Models, Biological</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009584" MajorTopicYN="N">Nitrogen</DescriptorName><QualifierName UI="Q000494" MajorTopicYN="Y">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009587" MajorTopicYN="N">Nitrogen Isotopes</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012988" MajorTopicYN="N">Soil Microbiology</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2012</Year><Month>11</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2012</Year><Month>12</Month><Day>04</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>1</Month><Day>30</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2013</Year><Month>1</Month><Day>30</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2013</Year><Month>8</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">23356503</ArticleId><ArticleId IdType="doi">10.1111/nph.12139</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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