Arbuscular mycorrhizal inoculum potential: a mechanism promoting positive diversity-invasibility relationships in mountain beech forests in New Zealand?
Identifieur interne : 002536 ( Main/Corpus ); précédent : 002535; suivant : 002537Arbuscular mycorrhizal inoculum potential: a mechanism promoting positive diversity-invasibility relationships in mountain beech forests in New Zealand?
Auteurs : Laura A. Spence ; Ian A. Dickie ; David A. CoomesSource :
- Mycorrhiza [ 1432-1890 ] ; 2011.
English descriptors
- KwdEn :
- MESH :
- geographic : New Zealand.
- growth & development : Fungi, Mycorrhizae.
- isolation & purification : Fungi, Mycorrhizae.
- microbiology : Fagus, Trees.
- Biodiversity, Soil Microbiology.
Abstract
Mycorrhizal fungi are important symbionts for the majority of plant species, but their role in determining the susceptibility of habitat to plant invasion is poorly understood. Hieracium lepidulum is an arbuscular mycorrhizal herb, currently invading the understorey of ectomycorrhizal Nothofagus solandri var. cliffortioides (mountain beech) forest in New Zealand. Mountain beech is solely ectomycorrhizal, and other plant species within the understorey occur sporadically. Hieracium has been shown to establish preferentially in microsites with higher plant species richness at a scale of less than 1 m(2) within mountain beech forest, and we tested the hypothesis that more diverse microsites (<1 m(2)) are associated with higher levels of arbuscular mycorrhizal fungal (AMF) inoculum. We found low levels of AMF inoculum across all microsites, and over a third of samples contained no inoculum at all. Higher vascular-plant species richness (but not biomass) was associated with higher AMF spore densities in field soil, and greater AMF colonization of H. lepidulum seedlings in a bioassay. Absence of AMF inoculum from much of the soil and the positive association of inoculum potential with species richness provide a potential mechanism for the establishment of a positive diversity-invasibility relationship in the mountain beech forest.
DOI: 10.1007/s00572-010-0340-4
PubMed: 20922434
Links to Exploration step
pubmed:20922434Le document en format XML
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<author><name sortKey="Spence, Laura A" sort="Spence, Laura A" uniqKey="Spence L" first="Laura A" last="Spence">Laura A. Spence</name>
<affiliation><nlm:affiliation>Forest Ecology and Conservation Group, Department of Plant Sciences, University of Cambridge, Cambridge, UK. l.a.spence.01@cantab.net</nlm:affiliation>
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<author><name sortKey="Dickie, Ian A" sort="Dickie, Ian A" uniqKey="Dickie I" first="Ian A" last="Dickie">Ian A. Dickie</name>
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<author><name sortKey="Coomes, David A" sort="Coomes, David A" uniqKey="Coomes D" first="David A" last="Coomes">David A. Coomes</name>
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<author><name sortKey="Spence, Laura A" sort="Spence, Laura A" uniqKey="Spence L" first="Laura A" last="Spence">Laura A. Spence</name>
<affiliation><nlm:affiliation>Forest Ecology and Conservation Group, Department of Plant Sciences, University of Cambridge, Cambridge, UK. l.a.spence.01@cantab.net</nlm:affiliation>
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<author><name sortKey="Dickie, Ian A" sort="Dickie, Ian A" uniqKey="Dickie I" first="Ian A" last="Dickie">Ian A. Dickie</name>
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<author><name sortKey="Coomes, David A" sort="Coomes, David A" uniqKey="Coomes D" first="David A" last="Coomes">David A. Coomes</name>
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<series><title level="j">Mycorrhiza</title>
<idno type="eISSN">1432-1890</idno>
<imprint><date when="2011" type="published">2011</date>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biodiversity (MeSH)</term>
<term>Fagus (microbiology)</term>
<term>Fungi (growth & development)</term>
<term>Fungi (isolation & purification)</term>
<term>Mycorrhizae (growth & development)</term>
<term>Mycorrhizae (isolation & purification)</term>
<term>New Zealand (MeSH)</term>
<term>Soil Microbiology (MeSH)</term>
<term>Trees (microbiology)</term>
</keywords>
<keywords scheme="MESH" type="geographic" xml:lang="en"><term>New Zealand</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Fungi</term>
<term>Mycorrhizae</term>
</keywords>
<keywords scheme="MESH" qualifier="isolation & purification" xml:lang="en"><term>Fungi</term>
<term>Mycorrhizae</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Fagus</term>
<term>Trees</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Biodiversity</term>
<term>Soil Microbiology</term>
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<front><div type="abstract" xml:lang="en">Mycorrhizal fungi are important symbionts for the majority of plant species, but their role in determining the susceptibility of habitat to plant invasion is poorly understood. Hieracium lepidulum is an arbuscular mycorrhizal herb, currently invading the understorey of ectomycorrhizal Nothofagus solandri var. cliffortioides (mountain beech) forest in New Zealand. Mountain beech is solely ectomycorrhizal, and other plant species within the understorey occur sporadically. Hieracium has been shown to establish preferentially in microsites with higher plant species richness at a scale of less than 1 m(2) within mountain beech forest, and we tested the hypothesis that more diverse microsites (<1 m(2)) are associated with higher levels of arbuscular mycorrhizal fungal (AMF) inoculum. We found low levels of AMF inoculum across all microsites, and over a third of samples contained no inoculum at all. Higher vascular-plant species richness (but not biomass) was associated with higher AMF spore densities in field soil, and greater AMF colonization of H. lepidulum seedlings in a bioassay. Absence of AMF inoculum from much of the soil and the positive association of inoculum potential with species richness provide a potential mechanism for the establishment of a positive diversity-invasibility relationship in the mountain beech forest.</div>
</front>
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<Month>07</Month>
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<DateRevised><Year>2018</Year>
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<Title>Mycorrhiza</Title>
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<ArticleTitle>Arbuscular mycorrhizal inoculum potential: a mechanism promoting positive diversity-invasibility relationships in mountain beech forests in New Zealand?</ArticleTitle>
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<Abstract><AbstractText>Mycorrhizal fungi are important symbionts for the majority of plant species, but their role in determining the susceptibility of habitat to plant invasion is poorly understood. Hieracium lepidulum is an arbuscular mycorrhizal herb, currently invading the understorey of ectomycorrhizal Nothofagus solandri var. cliffortioides (mountain beech) forest in New Zealand. Mountain beech is solely ectomycorrhizal, and other plant species within the understorey occur sporadically. Hieracium has been shown to establish preferentially in microsites with higher plant species richness at a scale of less than 1 m(2) within mountain beech forest, and we tested the hypothesis that more diverse microsites (<1 m(2)) are associated with higher levels of arbuscular mycorrhizal fungal (AMF) inoculum. We found low levels of AMF inoculum across all microsites, and over a third of samples contained no inoculum at all. Higher vascular-plant species richness (but not biomass) was associated with higher AMF spore densities in field soil, and greater AMF colonization of H. lepidulum seedlings in a bioassay. Absence of AMF inoculum from much of the soil and the positive association of inoculum potential with species richness provide a potential mechanism for the establishment of a positive diversity-invasibility relationship in the mountain beech forest.</AbstractText>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Spence</LastName>
<ForeName>Laura A</ForeName>
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