Relative roles of niche and neutral processes in structuring a soil microbial community.
Identifieur interne : 002629 ( Main/Exploration ); précédent : 002628; suivant : 002630Relative roles of niche and neutral processes in structuring a soil microbial community.
Auteurs : Alex J. Dumbrell [Royaume-Uni] ; Michaela Nelson ; Thorunn Helgason ; Calvin Dytham ; Alastair H. FitterSource :
- The ISME journal [ 1751-7370 ] ; 2010.
Descripteurs français
- KwdFr :
- ADN fongique (génétique), ADN ribosomique (génétique), ARN ribosomique 18S (génétique), Biodiversité (MeSH), Champignons (classification), Champignons (croissance et développement), Concentration en ions d'hydrogène (MeSH), Microbiologie du sol (MeSH), Mycorhizes (croissance et développement), Plantes (microbiologie), Polymorphisme de restriction (MeSH), Profilage d'ADN (MeSH), Racines de plante (microbiologie), Sol (analyse).
- MESH :
- analyse : Sol.
- croissance et développement : Champignons, Mycorhizes.
- génétique : ADN fongique, ADN ribosomique, ARN ribosomique 18S, Champignons.
- microbiologie : Plantes, Racines de plante.
- Biodiversité, Concentration en ions d'hydrogène, Microbiologie du sol, Polymorphisme de restriction, Profilage d'ADN.
English descriptors
- KwdEn :
- Biodiversity (MeSH), DNA Fingerprinting (MeSH), DNA, Fungal (genetics), DNA, Ribosomal (genetics), Fungi (classification), Fungi (growth & development), Hydrogen-Ion Concentration (MeSH), Mycorrhizae (growth & development), Plant Roots (microbiology), Plants (microbiology), Polymorphism, Restriction Fragment Length (MeSH), RNA, Ribosomal, 18S (genetics), Soil (analysis), Soil Microbiology (MeSH).
- MESH :
- chemical , analysis : Soil.
- chemical , genetics : DNA, Fungal, DNA, Ribosomal, RNA, Ribosomal, 18S.
- classification : Fungi.
- growth & development : Fungi, Mycorrhizae.
- microbiology : Plant Roots, Plants.
- Biodiversity, DNA Fingerprinting, Hydrogen-Ion Concentration, Polymorphism, Restriction Fragment Length, Soil Microbiology.
Abstract
Most attempts to identify the processes that structure natural communities have focused on conspicuous macroorganisms whereas the processes responsible for structuring microbial communities remain relatively unknown. Two main theories explaining these processes have emerged; niche theory, which highlights the importance of deterministic processes, and neutral theory, which focuses on stochastic processes. We examined whether neutral or niche-based mechanisms best explain the composition and structure of communities of a functionally important soil microbe, the arbuscular mycorrhizal (AM) fungi. Using molecular techniques, we surveyed AM fungi from 425 individual plants of 28 plant species along a soil pH gradient. There was evidence that both niche and neutral processes structured this community. Species abundances fitted the zero-sum multinomial distribution and there was evidence of dispersal limitation, both indicators of neutral processes. However, we found stronger support that niche differentiation based on abiotic soil factors, primarily pH, was structuring the AM fungal community. Host plant species affected AM fungal community composition negligibly compared to soil pH. We conclude that although niche partitioning was the primary mechanism regulating the composition and diversity of natural AM fungal communities, these communities are also influenced by stochastic-neutral processes. This study represents one of the most comprehensive investigations of community-level processes acting on soil microbes; revealing a community that although influenced by stochastic processes, still responded in a predictable manner to a major abiotic niche axis, soil pH. The strong response to environmental factors of this community highlights the susceptibility of soil microbes to environmental change.
DOI: 10.1038/ismej.2009.122
PubMed: 19924158
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Two main theories explaining these processes have emerged; niche theory, which highlights the importance of deterministic processes, and neutral theory, which focuses on stochastic processes. We examined whether neutral or niche-based mechanisms best explain the composition and structure of communities of a functionally important soil microbe, the arbuscular mycorrhizal (AM) fungi. Using molecular techniques, we surveyed AM fungi from 425 individual plants of 28 plant species along a soil pH gradient. There was evidence that both niche and neutral processes structured this community. Species abundances fitted the zero-sum multinomial distribution and there was evidence of dispersal limitation, both indicators of neutral processes. However, we found stronger support that niche differentiation based on abiotic soil factors, primarily pH, was structuring the AM fungal community. Host plant species affected AM fungal community composition negligibly compared to soil pH. We conclude that although niche partitioning was the primary mechanism regulating the composition and diversity of natural AM fungal communities, these communities are also influenced by stochastic-neutral processes. This study represents one of the most comprehensive investigations of community-level processes acting on soil microbes; revealing a community that although influenced by stochastic processes, still responded in a predictable manner to a major abiotic niche axis, soil pH. The strong response to environmental factors of this community highlights the susceptibility of soil microbes to environmental change.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">19924158</PMID><DateCompleted><Year>2010</Year><Month>04</Month><Day>30</Day></DateCompleted><DateRevised><Year>2017</Year><Month>11</Month><Day>16</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1751-7370</ISSN><JournalIssue CitedMedium="Internet"><Volume>4</Volume><Issue>3</Issue><PubDate><Year>2010</Year><Month>Mar</Month></PubDate></JournalIssue><Title>The ISME journal</Title><ISOAbbreviation>ISME J</ISOAbbreviation></Journal><ArticleTitle>Relative roles of niche and neutral processes in structuring a soil microbial community.</ArticleTitle><Pagination><MedlinePgn>337-45</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1038/ismej.2009.122</ELocationID><Abstract><AbstractText>Most attempts to identify the processes that structure natural communities have focused on conspicuous macroorganisms whereas the processes responsible for structuring microbial communities remain relatively unknown. Two main theories explaining these processes have emerged; niche theory, which highlights the importance of deterministic processes, and neutral theory, which focuses on stochastic processes. We examined whether neutral or niche-based mechanisms best explain the composition and structure of communities of a functionally important soil microbe, the arbuscular mycorrhizal (AM) fungi. Using molecular techniques, we surveyed AM fungi from 425 individual plants of 28 plant species along a soil pH gradient. There was evidence that both niche and neutral processes structured this community. Species abundances fitted the zero-sum multinomial distribution and there was evidence of dispersal limitation, both indicators of neutral processes. However, we found stronger support that niche differentiation based on abiotic soil factors, primarily pH, was structuring the AM fungal community. Host plant species affected AM fungal community composition negligibly compared to soil pH. We conclude that although niche partitioning was the primary mechanism regulating the composition and diversity of natural AM fungal communities, these communities are also influenced by stochastic-neutral processes. This study represents one of the most comprehensive investigations of community-level processes acting on soil microbes; revealing a community that although influenced by stochastic processes, still responded in a predictable manner to a major abiotic niche axis, soil pH. The strong response to environmental factors of this community highlights the susceptibility of soil microbes to environmental change.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Dumbrell</LastName><ForeName>Alex J</ForeName><Initials>AJ</Initials><AffiliationInfo><Affiliation>Department of Biology, University of York, York, UK. ajd121@york.ac.uk</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Nelson</LastName><ForeName>Michaela</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Helgason</LastName><ForeName>Thorunn</ForeName><Initials>T</Initials></Author><Author ValidYN="Y"><LastName>Dytham</LastName><ForeName>Calvin</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Fitter</LastName><ForeName>Alastair H</ForeName><Initials>AH</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>2009</Year><Month>11</Month><Day>19</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>ISME J</MedlineTA><NlmUniqueID>101301086</NlmUniqueID><ISSNLinking>1751-7362</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D004271">DNA, Fungal</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D004275">DNA, Ribosomal</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012337">RNA, Ribosomal, 18S</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012987">Soil</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><CommentsCorrectionsList><CommentsCorrections RefType="ErratumIn"><RefSource>ISME J. 2010 Aug;4(8):1078</RefSource></CommentsCorrections></CommentsCorrectionsList><MeshHeadingList><MeshHeading><DescriptorName UI="D044822" MajorTopicYN="Y">Biodiversity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D016172" MajorTopicYN="N">DNA Fingerprinting</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D004271" MajorTopicYN="N">DNA, Fungal</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004275" MajorTopicYN="N">DNA, Ribosomal</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D005658" MajorTopicYN="N">Fungi</DescriptorName><QualifierName UI="Q000145" MajorTopicYN="Y">classification</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006863" MajorTopicYN="N">Hydrogen-Ion 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MajorTopicYN="N">analysis</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012988" MajorTopicYN="Y">Soil Microbiology</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2009</Year><Month>11</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2009</Year><Month>11</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2010</Year><Month>5</Month><Day>1</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">19924158</ArticleId><ArticleId IdType="pii">ismej2009122</ArticleId><ArticleId IdType="doi">10.1038/ismej.2009.122</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Royaume-Uni</li></country></list><tree><noCountry><name sortKey="Dytham, Calvin" sort="Dytham, Calvin" uniqKey="Dytham C" first="Calvin" last="Dytham">Calvin Dytham</name><name sortKey="Fitter, Alastair H" sort="Fitter, Alastair H" uniqKey="Fitter A" first="Alastair H" last="Fitter">Alastair H. Fitter</name><name sortKey="Helgason, Thorunn" sort="Helgason, Thorunn" uniqKey="Helgason T" first="Thorunn" last="Helgason">Thorunn Helgason</name><name sortKey="Nelson, Michaela" sort="Nelson, Michaela" uniqKey="Nelson M" first="Michaela" last="Nelson">Michaela Nelson</name></noCountry><country name="Royaume-Uni"><noRegion><name sortKey="Dumbrell, Alex J" sort="Dumbrell, Alex J" uniqKey="Dumbrell A" first="Alex J" last="Dumbrell">Alex J. Dumbrell</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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