MycorrhizaeV1, Main, Corpus, bibRecord, 001E49

Fungal communities influence root exudation rates in pine seedlings.

Identifieur interne : 001E49 ( Main/Corpus ); précédent : 001E48; suivant : 001E50

Fungal communities influence root exudation rates in pine seedlings.

Auteurs : Ina C. Meier ; Peter G. Avis ; Richard P. Phillips

Source :

FEMS microbiology ecology [ 1574-6941 ] ; 2013.

RBID : pubmed:23013386

English descriptors

KwdEn :
- Biota (MeSH), Mycorrhizae (physiology), Pinus taeda (metabolism), Pinus taeda (microbiology), Plant Exudates (metabolism), Plant Roots (metabolism), Plant Roots (microbiology), Seedlings (metabolism), Seedlings (microbiology), Soil Microbiology (MeSH), Trees (metabolism), Trees (microbiology).
MESH :
- chemical , metabolism : Plant Exudates.
- metabolism : Pinus taeda, Plant Roots, Seedlings, Trees.
- microbiology : Pinus taeda, Plant Roots, Seedlings, Trees.
- physiology : Mycorrhizae.
- Biota, Soil Microbiology.

Abstract

Root exudates are hypothesized to play a central role in belowground food webs, nutrient turnover, and soil C dynamics in forests, but little is known about the extent to which root-associated microbial communities influence exudation rates in trees. We used a novel experimental technique to inoculate loblolly pine (Pinus taeda L.) seedlings with indigenous forest fungi to examine how diverse fungal communities influence exudation. Surface-sterilized seeds were sown in intact, unsieved soil cores for 14 weeks to promote root colonization by fungi. After 14 weeks, we transferred seedlings and root-associated fungi into cuvettes and measured exudate accumulation in trap solutions. Both the abundance and identity of root-associated fungi influenced exudation. Exudation rates were greatest in root systems least colonized by ectomycorrhizal (ECM) fungi and most colonized by putative pathogenic and saprotrophic fungi. However, the ECM community composition was not a strong determinant of exudation rates. These results suggest that environmental conditions that influence the degree to which tree roots are colonized by pathogenic and saprotrophic vs. mutualistic fungi are likely to mediate fluxes of labile C in forest soils, with consequences for soil biogeochemistry and ecosystem processes.

DOI: 10.1111/1574-6941.12016
PubMed: 23013386

Links to Exploration step

pubmed:23013386

Le document en format XML

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<author><name sortKey="Meier, Ina C" sort="Meier, Ina C" uniqKey="Meier I" first="Ina C" last="Meier">Ina C. Meier</name>
<affiliation><nlm:affiliation>Department of Biology, Indiana University, Bloomington, IN, USA. imeier@indiana.edu</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Avis, Peter G" sort="Avis, Peter G" uniqKey="Avis P" first="Peter G" last="Avis">Peter G. Avis</name>
</author>
<author><name sortKey="Phillips, Richard P" sort="Phillips, Richard P" uniqKey="Phillips R" first="Richard P" last="Phillips">Richard P. Phillips</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Fungal communities influence root exudation rates in pine seedlings.</title>
<author><name sortKey="Meier, Ina C" sort="Meier, Ina C" uniqKey="Meier I" first="Ina C" last="Meier">Ina C. Meier</name>
<affiliation><nlm:affiliation>Department of Biology, Indiana University, Bloomington, IN, USA. imeier@indiana.edu</nlm:affiliation>
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<author><name sortKey="Avis, Peter G" sort="Avis, Peter G" uniqKey="Avis P" first="Peter G" last="Avis">Peter G. Avis</name>
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<author><name sortKey="Phillips, Richard P" sort="Phillips, Richard P" uniqKey="Phillips R" first="Richard P" last="Phillips">Richard P. Phillips</name>
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<series><title level="j">FEMS microbiology ecology</title>
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<imprint><date when="2013" type="published">2013</date>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biota (MeSH)</term>
<term>Mycorrhizae (physiology)</term>
<term>Pinus taeda (metabolism)</term>
<term>Pinus taeda (microbiology)</term>
<term>Plant Exudates (metabolism)</term>
<term>Plant Roots (metabolism)</term>
<term>Plant Roots (microbiology)</term>
<term>Seedlings (metabolism)</term>
<term>Seedlings (microbiology)</term>
<term>Soil Microbiology (MeSH)</term>
<term>Trees (metabolism)</term>
<term>Trees (microbiology)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Plant Exudates</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Pinus taeda</term>
<term>Plant Roots</term>
<term>Seedlings</term>
<term>Trees</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Pinus taeda</term>
<term>Plant Roots</term>
<term>Seedlings</term>
<term>Trees</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Mycorrhizae</term>
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<front><div type="abstract" xml:lang="en">Root exudates are hypothesized to play a central role in belowground food webs, nutrient turnover, and soil C dynamics in forests, but little is known about the extent to which root-associated microbial communities influence exudation rates in trees. We used a novel experimental technique to inoculate loblolly pine (Pinus taeda L.) seedlings with indigenous forest fungi to examine how diverse fungal communities influence exudation. Surface-sterilized seeds were sown in intact, unsieved soil cores for 14 weeks to promote root colonization by fungi. After 14 weeks, we transferred seedlings and root-associated fungi into cuvettes and measured exudate accumulation in trap solutions. Both the abundance and identity of root-associated fungi influenced exudation. Exudation rates were greatest in root systems least colonized by ectomycorrhizal (ECM) fungi and most colonized by putative pathogenic and saprotrophic fungi. However, the ECM community composition was not a strong determinant of exudation rates. These results suggest that environmental conditions that influence the degree to which tree roots are colonized by pathogenic and saprotrophic vs. mutualistic fungi are likely to mediate fluxes of labile C in forest soils, with consequences for soil biogeochemistry and ecosystem processes.</div>
</front>
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<DateCompleted><Year>2013</Year>
<Month>11</Month>
<Day>08</Day>
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<DateRevised><Year>2018</Year>
<Month>12</Month>
<Day>02</Day>
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<Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1574-6941</ISSN>
<JournalIssue CitedMedium="Internet"><Volume>83</Volume>
<Issue>3</Issue>
<PubDate><Year>2013</Year>
<Month>Mar</Month>
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<Title>FEMS microbiology ecology</Title>
<ISOAbbreviation>FEMS Microbiol Ecol</ISOAbbreviation>
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<ArticleTitle>Fungal communities influence root exudation rates in pine seedlings.</ArticleTitle>
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<Abstract><AbstractText>Root exudates are hypothesized to play a central role in belowground food webs, nutrient turnover, and soil C dynamics in forests, but little is known about the extent to which root-associated microbial communities influence exudation rates in trees. We used a novel experimental technique to inoculate loblolly pine (Pinus taeda L.) seedlings with indigenous forest fungi to examine how diverse fungal communities influence exudation. Surface-sterilized seeds were sown in intact, unsieved soil cores for 14 weeks to promote root colonization by fungi. After 14 weeks, we transferred seedlings and root-associated fungi into cuvettes and measured exudate accumulation in trap solutions. Both the abundance and identity of root-associated fungi influenced exudation. Exudation rates were greatest in root systems least colonized by ectomycorrhizal (ECM) fungi and most colonized by putative pathogenic and saprotrophic fungi. However, the ECM community composition was not a strong determinant of exudation rates. These results suggest that environmental conditions that influence the degree to which tree roots are colonized by pathogenic and saprotrophic vs. mutualistic fungi are likely to mediate fluxes of labile C in forest soils, with consequences for soil biogeochemistry and ecosystem processes.</AbstractText>
<CopyrightInformation>© 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.</CopyrightInformation>
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<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Meier</LastName>
<ForeName>Ina C</ForeName>
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<AffiliationInfo><Affiliation>Department of Biology, Indiana University, Bloomington, IN, USA. imeier@indiana.edu</Affiliation>
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<MeshHeadingList><MeshHeading><DescriptorName UI="D058448" MajorTopicYN="N">Biota</DescriptorName>
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<MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName>
<QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName>
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<MeshHeading><DescriptorName UI="D041603" MajorTopicYN="N">Pinus taeda</DescriptorName>
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<QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName>
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<MeshHeading><DescriptorName UI="D036226" MajorTopicYN="N">Seedlings</DescriptorName>
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<QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D012988" MajorTopicYN="Y">Soil Microbiology</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
<QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName>
</MeshHeading>
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Fungal communities influence root exudation rates in pine seedlings.

Fungal communities influence root exudation rates in pine seedlings.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki