MycorrhizaeV1, Main, Corpus, bibRecord, 001186

An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest.

Identifieur interne : 001186 ( Main/Corpus ); précédent : 001185; suivant : 001187

An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest.

Auteurs : Adriana Corrales ; Scott A. Mangan ; Benjamin L. Turner ; James W. Dalling

Source :

Ecology letters [ 1461-0248 ] ; 2016.

RBID : pubmed:26833573

English descriptors

KwdEn :
- Biodiversity (MeSH), Forests (MeSH), Mycorrhizae (physiology), Nitrogen (metabolism), Nitrogen Cycle (physiology), Panama (MeSH), Soil Microbiology (MeSH), Trees (microbiology), Tropical Climate (MeSH).
MESH :
- chemical , metabolism : Nitrogen.
- microbiology : Trees.
- physiology : Mycorrhizae, Nitrogen Cycle.
- Biodiversity, Forests, Panama, Soil Microbiology, Tropical Climate.

Abstract

Tropical forests are renowned for their high diversity, yet in many sites a single tree species accounts for the majority of the individuals in a stand. An explanation for these monodominant forests remains elusive, but may be linked to mycorrhizal symbioses. We tested three hypotheses by which ectomycorrhizas might facilitate the dominance of the tree, Oreomunnea mexicana, in montane tropical forest in Panama. We tested whether access to ectomycorrhizal networks improved growth and survival of seedlings, evaluated whether ectomycorrhizal fungi promote seedling growth via positive plant-soil feedback, and measured whether Oreomunnea reduced inorganic nitrogen availability. We found no evidence that Oreomunnea benefits from ectomycorrhizal networks or plant-soil feedback. However, we found three-fold higher soil nitrate and ammonium concentrations outside than inside Oreomunnea-dominated forest and a correlation between soil nitrate and Oreomunnea abundance in plots. Ectomycorrhizal effects on nitrogen cycling might therefore provide an explanation for the monodominance of ectomycorrhizal tree species worldwide.

DOI: 10.1111/ele.12570
PubMed: 26833573

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pubmed:26833573

Le document en format XML

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<author><name sortKey="Corrales, Adriana" sort="Corrales, Adriana" uniqKey="Corrales A" first="Adriana" last="Corrales">Adriana Corrales</name>
<affiliation><nlm:affiliation>Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana-Champaign, IL, 61801, USA.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Mangan, Scott A" sort="Mangan, Scott A" uniqKey="Mangan S" first="Scott A" last="Mangan">Scott A. Mangan</name>
<affiliation><nlm:affiliation>Department of Biology, Washington University in St. Louis, St. Louis, MO, 63130, USA.</nlm:affiliation>
</affiliation>
<affiliation><nlm:affiliation>Smithsonian Tropical Research Institute, Apartado, 0843-03092, Balboa, Ancon, Panama.</nlm:affiliation>
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<author><name sortKey="Turner, Benjamin L" sort="Turner, Benjamin L" uniqKey="Turner B" first="Benjamin L" last="Turner">Benjamin L. Turner</name>
<affiliation><nlm:affiliation>Smithsonian Tropical Research Institute, Apartado, 0843-03092, Balboa, Ancon, Panama.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Dalling, James W" sort="Dalling, James W" uniqKey="Dalling J" first="James W" last="Dalling">James W. Dalling</name>
<affiliation><nlm:affiliation>Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana-Champaign, IL, 61801, USA.</nlm:affiliation>
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<affiliation><nlm:affiliation>Smithsonian Tropical Research Institute, Apartado, 0843-03092, Balboa, Ancon, Panama.</nlm:affiliation>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest.</title>
<author><name sortKey="Corrales, Adriana" sort="Corrales, Adriana" uniqKey="Corrales A" first="Adriana" last="Corrales">Adriana Corrales</name>
<affiliation><nlm:affiliation>Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana-Champaign, IL, 61801, USA.</nlm:affiliation>
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<author><name sortKey="Turner, Benjamin L" sort="Turner, Benjamin L" uniqKey="Turner B" first="Benjamin L" last="Turner">Benjamin L. Turner</name>
<affiliation><nlm:affiliation>Smithsonian Tropical Research Institute, Apartado, 0843-03092, Balboa, Ancon, Panama.</nlm:affiliation>
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<author><name sortKey="Dalling, James W" sort="Dalling, James W" uniqKey="Dalling J" first="James W" last="Dalling">James W. Dalling</name>
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<series><title level="j">Ecology letters</title>
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<term>Mycorrhizae (physiology)</term>
<term>Nitrogen (metabolism)</term>
<term>Nitrogen Cycle (physiology)</term>
<term>Panama (MeSH)</term>
<term>Soil Microbiology (MeSH)</term>
<term>Trees (microbiology)</term>
<term>Tropical Climate (MeSH)</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Nitrogen</term>
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<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Trees</term>
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<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Mycorrhizae</term>
<term>Nitrogen Cycle</term>
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<keywords scheme="MESH" xml:lang="en"><term>Biodiversity</term>
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<front><div type="abstract" xml:lang="en">Tropical forests are renowned for their high diversity, yet in many sites a single tree species accounts for the majority of the individuals in a stand. An explanation for these monodominant forests remains elusive, but may be linked to mycorrhizal symbioses. We tested three hypotheses by which ectomycorrhizas might facilitate the dominance of the tree, Oreomunnea mexicana, in montane tropical forest in Panama. We tested whether access to ectomycorrhizal networks improved growth and survival of seedlings, evaluated whether ectomycorrhizal fungi promote seedling growth via positive plant-soil feedback, and measured whether Oreomunnea reduced inorganic nitrogen availability. We found no evidence that Oreomunnea benefits from ectomycorrhizal networks or plant-soil feedback. However, we found three-fold higher soil nitrate and ammonium concentrations outside than inside Oreomunnea-dominated forest and a correlation between soil nitrate and Oreomunnea abundance in plots. Ectomycorrhizal effects on nitrogen cycling might therefore provide an explanation for the monodominance of ectomycorrhizal tree species worldwide. </div>
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<Title>Ecology letters</Title>
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<ArticleTitle>An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest.</ArticleTitle>
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<Abstract><AbstractText>Tropical forests are renowned for their high diversity, yet in many sites a single tree species accounts for the majority of the individuals in a stand. An explanation for these monodominant forests remains elusive, but may be linked to mycorrhizal symbioses. We tested three hypotheses by which ectomycorrhizas might facilitate the dominance of the tree, Oreomunnea mexicana, in montane tropical forest in Panama. We tested whether access to ectomycorrhizal networks improved growth and survival of seedlings, evaluated whether ectomycorrhizal fungi promote seedling growth via positive plant-soil feedback, and measured whether Oreomunnea reduced inorganic nitrogen availability. We found no evidence that Oreomunnea benefits from ectomycorrhizal networks or plant-soil feedback. However, we found three-fold higher soil nitrate and ammonium concentrations outside than inside Oreomunnea-dominated forest and a correlation between soil nitrate and Oreomunnea abundance in plots. Ectomycorrhizal effects on nitrogen cycling might therefore provide an explanation for the monodominance of ectomycorrhizal tree species worldwide. </AbstractText>
<CopyrightInformation>© 2016 John Wiley & Sons Ltd/CNRS.</CopyrightInformation>
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<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Corrales</LastName>
<ForeName>Adriana</ForeName>
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<AffiliationInfo><Affiliation>Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana-Champaign, IL, 61801, USA.</Affiliation>
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An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest.

An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest.

Source :

English descriptors

Abstract

Links to Exploration step

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Pour manipuler ce document sous Unix (Dilib)

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