Phylogenetic trait conservation in the partner choice of a group of ectomycorrhizal trees.
Identifieur interne : 001839 ( Main/Exploration ); précédent : 001838; suivant : 001840Phylogenetic trait conservation in the partner choice of a group of ectomycorrhizal trees.
Auteurs : Jeremy Hayward [États-Unis] ; Thomas R. HortonSource :
- Molecular ecology [ 1365-294X ] ; 2014.
Descripteurs français
- KwdFr :
- MESH :
- génétique : Mycorhizes.
- microbiologie : Nyctaginaceae.
- Données de séquences moléculaires, Phylogenèse, Symbiose, Théorème de Bayes.
English descriptors
- KwdEn :
- MESH :
- genetics : Mycorrhizae.
- microbiology : Nyctaginaceae.
- Bayes Theorem, Molecular Sequence Data, Phylogeny, Symbiosis.
Abstract
Ecological interactions are frequently conserved across evolutionary time. In the case of mutualisms, these conserved interactions may play a large role in structuring mutualist communities. We hypothesized that phylogenetic trait conservation could play a key role in determining patterns of association in the ectomycorrhizal symbiosis, a globally important trophic mutualism. We used the association between members of the pantropical plant tribe Pisonieae and its fungal mutualist partners as a model system to test the prediction that Pisonieae-associating ectomycorrhizal fungi will be more closely related than expected by chance, reflecting a conserved trait. We tested this prediction using previously published and newly generated sequences in a Bayesian framework incorporating phylogenetic uncertainty. We report that phylogenetic trait conservation does exist in this association. We generated a five-marker phylogeny of members of the Pisonieae and used this phylogeny in a Bayesian relaxed molecular clock analysis. We established that the most recent common ancestors of Pisonieae species and Pisonieae-associating fungi sharing phylogenetic conservation of their patterns of ectomycorrhizal association occurred no more recently than 14.2 Ma. We therefore suggest that phylogenetic trait conservation in the Pisonieae ectomycorrhizal mutualism association represents an inherited syndrome which has existed for at least 14 Myr.
DOI: 10.1111/mec.12903
PubMed: 25169622
Affiliations:
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In the case of mutualisms, these conserved interactions may play a large role in structuring mutualist communities. We hypothesized that phylogenetic trait conservation could play a key role in determining patterns of association in the ectomycorrhizal symbiosis, a globally important trophic mutualism. We used the association between members of the pantropical plant tribe Pisonieae and its fungal mutualist partners as a model system to test the prediction that Pisonieae-associating ectomycorrhizal fungi will be more closely related than expected by chance, reflecting a conserved trait. We tested this prediction using previously published and newly generated sequences in a Bayesian framework incorporating phylogenetic uncertainty. We report that phylogenetic trait conservation does exist in this association. We generated a five-marker phylogeny of members of the Pisonieae and used this phylogeny in a Bayesian relaxed molecular clock analysis. We established that the most recent common ancestors of Pisonieae species and Pisonieae-associating fungi sharing phylogenetic conservation of their patterns of ectomycorrhizal association occurred no more recently than 14.2 Ma. We therefore suggest that phylogenetic trait conservation in the Pisonieae ectomycorrhizal mutualism association represents an inherited syndrome which has existed for at least 14 Myr.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25169622</PMID><DateCompleted><Year>2014</Year><Month>11</Month><Day>13</Day></DateCompleted><DateRevised><Year>2014</Year><Month>09</Month><Day>29</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-294X</ISSN><JournalIssue CitedMedium="Internet"><Volume>23</Volume><Issue>19</Issue><PubDate><Year>2014</Year><Month>Oct</Month></PubDate></JournalIssue><Title>Molecular ecology</Title><ISOAbbreviation>Mol Ecol</ISOAbbreviation></Journal><ArticleTitle>Phylogenetic trait conservation in the partner choice of a group of ectomycorrhizal trees.</ArticleTitle><Pagination><MedlinePgn>4886-98</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/mec.12903</ELocationID><Abstract><AbstractText>Ecological interactions are frequently conserved across evolutionary time. In the case of mutualisms, these conserved interactions may play a large role in structuring mutualist communities. We hypothesized that phylogenetic trait conservation could play a key role in determining patterns of association in the ectomycorrhizal symbiosis, a globally important trophic mutualism. We used the association between members of the pantropical plant tribe Pisonieae and its fungal mutualist partners as a model system to test the prediction that Pisonieae-associating ectomycorrhizal fungi will be more closely related than expected by chance, reflecting a conserved trait. We tested this prediction using previously published and newly generated sequences in a Bayesian framework incorporating phylogenetic uncertainty. We report that phylogenetic trait conservation does exist in this association. We generated a five-marker phylogeny of members of the Pisonieae and used this phylogeny in a Bayesian relaxed molecular clock analysis. We established that the most recent common ancestors of Pisonieae species and Pisonieae-associating fungi sharing phylogenetic conservation of their patterns of ectomycorrhizal association occurred no more recently than 14.2 Ma. 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Horton</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Hayward, Jeremy" sort="Hayward, Jeremy" uniqKey="Hayward J" first="Jeremy" last="Hayward">Jeremy Hayward</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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