Ectomycorrhizal fungal maladaptation and growth reductions associated with assisted migration of Douglas-fir.
Identifieur interne : 001613 ( Main/Exploration ); précédent : 001612; suivant : 001614Ectomycorrhizal fungal maladaptation and growth reductions associated with assisted migration of Douglas-fir.
Auteurs : J Marty Kranabetter [Canada] ; Michael Stoehr ; Greg A. O'NeillSource :
- The New phytologist [ 1469-8137 ] ; 2015.
Descripteurs français
- KwdFr :
- ADN fongique (composition chimique), Adaptation physiologique (MeSH), Azote (analyse), Climat (MeSH), Colombie-Britannique (MeSH), Données de séquences moléculaires (MeSH), Microbiologie du sol (MeSH), Mycorhizes (classification), Mycorhizes (génétique), Mycorhizes (physiologie), Pseudotsuga (microbiologie), Sol (composition chimique), Spécificité d'hôte (MeSH).
- MESH :
- analyse : Azote.
- composition chimique : ADN fongique, Mycorhizes, Sol.
- génétique : Mycorhizes.
- microbiologie : Pseudotsuga.
- physiologie : Mycorhizes.
- Adaptation physiologique, Climat, Colombie-Britannique, Données de séquences moléculaires, Microbiologie du sol, Spécificité d'hôte.
English descriptors
- KwdEn :
- Adaptation, Physiological (MeSH), British Columbia (MeSH), Climate (MeSH), DNA, Fungal (chemistry), Host Specificity (MeSH), Molecular Sequence Data (MeSH), Mycorrhizae (classification), Mycorrhizae (genetics), Mycorrhizae (physiology), Nitrogen (analysis), Pseudotsuga (microbiology), Soil (chemistry), Soil Microbiology (MeSH).
- MESH :
- chemical , analysis : Nitrogen.
- chemical , chemistry : DNA, Fungal, Soil.
- classification : Mycorrhizae.
- genetics : Mycorrhizae.
- microbiology : Pseudotsuga.
- physiology : Mycorrhizae.
- Adaptation, Physiological, British Columbia, Climate, Host Specificity, Molecular Sequence Data, Soil Microbiology.
Abstract
Climatic adaptations are the foundation of conifer genecology, but populations also display variation in traits for nitrogen (N) utilization, along with some heritable specificity for ectomycorrhizal fungi (EMF). We examined soil and EMF influences on assisted migration of Douglas-fir (Pseudotsuga menziesii var. menziesii) by comparing two contrasting maritime populations planted up to 400 km northward in southwestern British Columbia. Soil N availability and host N status (via δ(15) N) were assessed across 12 maritime test sites, whereas EMF on local and introduced hosts were quantified by morphotyping with molecular analysis. Climatic transfer effects were only significant with soil N concentrations of test sites as a covariate, and illustrated how height growth was compromised for populations originating from relatively dry or cool maritime environments. We also found evidence for EMF maladaptation, where height declined by up to 15% with the extent of dissimilarity in EMF communities of southern populations relative to local hosts. The results demonstrate how geographic structure in belowground environments can contribute to conifer genecology. Differences in the inherent growth potential of conifers may be partly related to nutritional adaptations arising under native soil fertility, and optimization of this growth potential likely requires close affiliation with local EMF communities.
DOI: 10.1111/nph.13287
PubMed: 25623442
Affiliations:
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We examined soil and EMF influences on assisted migration of Douglas-fir (Pseudotsuga menziesii var. menziesii) by comparing two contrasting maritime populations planted up to 400 km northward in southwestern British Columbia. Soil N availability and host N status (via δ(15) N) were assessed across 12 maritime test sites, whereas EMF on local and introduced hosts were quantified by morphotyping with molecular analysis. Climatic transfer effects were only significant with soil N concentrations of test sites as a covariate, and illustrated how height growth was compromised for populations originating from relatively dry or cool maritime environments. We also found evidence for EMF maladaptation, where height declined by up to 15% with the extent of dissimilarity in EMF communities of southern populations relative to local hosts. The results demonstrate how geographic structure in belowground environments can contribute to conifer genecology. Differences in the inherent growth potential of conifers may be partly related to nutritional adaptations arising under native soil fertility, and optimization of this growth potential likely requires close affiliation with local EMF communities. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25623442</PMID><DateCompleted><Year>2016</Year><Month>05</Month><Day>19</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1469-8137</ISSN><JournalIssue CitedMedium="Internet"><Volume>206</Volume><Issue>3</Issue><PubDate><Year>2015</Year><Month>May</Month></PubDate></JournalIssue><Title>The New phytologist</Title><ISOAbbreviation>New Phytol</ISOAbbreviation></Journal><ArticleTitle>Ectomycorrhizal fungal maladaptation and growth reductions associated with assisted migration of Douglas-fir.</ArticleTitle><Pagination><MedlinePgn>1135-44</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/nph.13287</ELocationID><Abstract><AbstractText>Climatic adaptations are the foundation of conifer genecology, but populations also display variation in traits for nitrogen (N) utilization, along with some heritable specificity for ectomycorrhizal fungi (EMF). We examined soil and EMF influences on assisted migration of Douglas-fir (Pseudotsuga menziesii var. menziesii) by comparing two contrasting maritime populations planted up to 400 km northward in southwestern British Columbia. Soil N availability and host N status (via δ(15) N) were assessed across 12 maritime test sites, whereas EMF on local and introduced hosts were quantified by morphotyping with molecular analysis. Climatic transfer effects were only significant with soil N concentrations of test sites as a covariate, and illustrated how height growth was compromised for populations originating from relatively dry or cool maritime environments. We also found evidence for EMF maladaptation, where height declined by up to 15% with the extent of dissimilarity in EMF communities of southern populations relative to local hosts. The results demonstrate how geographic structure in belowground environments can contribute to conifer genecology. Differences in the inherent growth potential of conifers may be partly related to nutritional adaptations arising under native soil fertility, and optimization of this growth potential likely requires close affiliation with local EMF communities. </AbstractText><CopyrightInformation>© 2015 Province of British Columbia. 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O'Neill</name><name sortKey="Stoehr, Michael" sort="Stoehr, Michael" uniqKey="Stoehr M" first="Michael" last="Stoehr">Michael Stoehr</name></noCountry><country name="Canada"><noRegion><name sortKey="Kranabetter, J Marty" sort="Kranabetter, J Marty" uniqKey="Kranabetter J" first="J Marty" last="Kranabetter">J Marty Kranabetter</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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