Diversity and persistence of arbuscular mycorrhizas in a low-Arctic meadow habitat.
Identifieur interne : 003046 ( Main/Exploration ); précédent : 003045; suivant : 003047Diversity and persistence of arbuscular mycorrhizas in a low-Arctic meadow habitat.
Auteurs : Anne Pietik Inen [Finlande] ; Minna-Maarit Kytöviita ; Rebecca Husband ; J Peter W. YoungSource :
- The New phytologist [ 0028-646X ] ; 2007.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Plant, Solidago.
- microbiologie : Plant, Solidago.
- physiologie : Mycorhizes, Symbiose.
- Climat froid, Conservation des ressources naturelles, Régions arctiques, Écosystème.
English descriptors
- KwdEn :
- MESH :
- geographic : Arctic Regions.
- growth & development : Seedlings, Solidago.
- microbiology : Seedlings, Solidago.
- physiology : Mycorrhizae, Symbiosis.
- Cold Climate, Conservation of Natural Resources, Ecosystem.
Abstract
Little is known about the ecology and diversity of arbuscular mycorrhizal (AM) fungi in Arctic ecosystems. Here, the diversity and composition of the AM fungal community and its response to host plant community composition were studied in a low-Arctic meadow habitat. The natural vegetation in two low-Arctic meadow sites was manipulated. Plots with natural vegetation, monoculture and no vegetation were established. Seeds of Solidago virgaurea were sown into the plots and the AM fungal community in the seedling roots was analysed using the terminal restriction fragment length polymorphism (T-RFLP) method. The vegetation manipulation treatments affected the community composition but not the diversity of AM fungi found in S. virgaurea roots. The diversity of AM fungi was higher in S. virgaurea roots in the site with naturally higher plant species diversity. These results show that AM fungi in low-Arctic meadows are able to survive for a period of 2 yr without a host plant. This ability buffers the AM fungal community against short-term changes in host plant community composition and diversity.
DOI: 10.1111/j.1469-8137.2007.02209.x
PubMed: 17725554
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<author><name sortKey="Pietik Inen, Anne" sort="Pietik Inen, Anne" uniqKey="Pietik Inen A" first="Anne" last="Pietik Inen">Anne Pietik Inen</name>
<affiliation wicri:level="1"><nlm:affiliation>Department of Biology, PO Box 3000, FIN-90014 University of Oulu, Oulu, Finland. anne.pietikainen@oulu.fi</nlm:affiliation>
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<author><name sortKey="Kytoviita, Minna Maarit" sort="Kytoviita, Minna Maarit" uniqKey="Kytoviita M" first="Minna-Maarit" last="Kytöviita">Minna-Maarit Kytöviita</name>
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<author><name sortKey="Husband, Rebecca" sort="Husband, Rebecca" uniqKey="Husband R" first="Rebecca" last="Husband">Rebecca Husband</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Arctic Regions (MeSH)</term>
<term>Cold Climate (MeSH)</term>
<term>Conservation of Natural Resources (MeSH)</term>
<term>Ecosystem (MeSH)</term>
<term>Mycorrhizae (physiology)</term>
<term>Seedlings (growth & development)</term>
<term>Seedlings (microbiology)</term>
<term>Solidago (growth & development)</term>
<term>Solidago (microbiology)</term>
<term>Symbiosis (physiology)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Climat froid (MeSH)</term>
<term>Conservation des ressources naturelles (MeSH)</term>
<term>Mycorhizes (physiologie)</term>
<term>Plant (croissance et développement)</term>
<term>Plant (microbiologie)</term>
<term>Régions arctiques (MeSH)</term>
<term>Solidago (croissance et développement)</term>
<term>Solidago (microbiologie)</term>
<term>Symbiose (physiologie)</term>
<term>Écosystème (MeSH)</term>
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<term>Solidago</term>
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<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Seedlings</term>
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<front><div type="abstract" xml:lang="en">Little is known about the ecology and diversity of arbuscular mycorrhizal (AM) fungi in Arctic ecosystems. Here, the diversity and composition of the AM fungal community and its response to host plant community composition were studied in a low-Arctic meadow habitat. The natural vegetation in two low-Arctic meadow sites was manipulated. Plots with natural vegetation, monoculture and no vegetation were established. Seeds of Solidago virgaurea were sown into the plots and the AM fungal community in the seedling roots was analysed using the terminal restriction fragment length polymorphism (T-RFLP) method. The vegetation manipulation treatments affected the community composition but not the diversity of AM fungi found in S. virgaurea roots. The diversity of AM fungi was higher in S. virgaurea roots in the site with naturally higher plant species diversity. These results show that AM fungi in low-Arctic meadows are able to survive for a period of 2 yr without a host plant. This ability buffers the AM fungal community against short-term changes in host plant community composition and diversity.</div>
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<Abstract><AbstractText>Little is known about the ecology and diversity of arbuscular mycorrhizal (AM) fungi in Arctic ecosystems. Here, the diversity and composition of the AM fungal community and its response to host plant community composition were studied in a low-Arctic meadow habitat. The natural vegetation in two low-Arctic meadow sites was manipulated. Plots with natural vegetation, monoculture and no vegetation were established. Seeds of Solidago virgaurea were sown into the plots and the AM fungal community in the seedling roots was analysed using the terminal restriction fragment length polymorphism (T-RFLP) method. The vegetation manipulation treatments affected the community composition but not the diversity of AM fungi found in S. virgaurea roots. The diversity of AM fungi was higher in S. virgaurea roots in the site with naturally higher plant species diversity. These results show that AM fungi in low-Arctic meadows are able to survive for a period of 2 yr without a host plant. This ability buffers the AM fungal community against short-term changes in host plant community composition and diversity.</AbstractText>
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