The potential for mycobiont sharing between shrubs and seedlings to facilitate tree establishment after wildfire at Alaska arctic treeline.
Identifieur interne : 000B51 ( Main/Exploration ); précédent : 000B50; suivant : 000B52The potential for mycobiont sharing between shrubs and seedlings to facilitate tree establishment after wildfire at Alaska arctic treeline.
Auteurs : Rebecca E. Hewitt [États-Unis] ; F Stuart Chapin [États-Unis] ; Teresa N. Hollingsworth [États-Unis] ; D Lee Taylor [États-Unis]Source :
- Molecular ecology [ 1365-294X ] ; 2017.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Plant.
- microbiologie : Arbres, Plant, Racines de plante.
- Alaska, Biomasse, Incendies, Mycorhizes, Régions arctiques, Symbiose.
English descriptors
- KwdEn :
- MESH :
- growth & development : Seedlings.
- microbiology : Plant Roots, Seedlings, Trees.
- Alaska, Arctic Regions, Biomass, Fires, Mycorrhizae, Symbiosis.
Abstract
Root-associated fungi, particularly ectomycorrhizal fungi (EMF), are critical symbionts of all boreal tree species. Although climatically driven increases in wildfire frequency and extent have been hypothesized to increase vegetation transitions from tundra to boreal forest, fire reduces mycorrhizal inoculum. Therefore, changes in mycobiont inoculum may potentially limit tree-seedling establishment beyond current treeline. We investigated whether ectomycorrhizal shrubs that resprout after fire support similar fungal taxa to those that associate with tree seedlings that establish naturally after fire. We then assessed whether mycobiont identity correlates with the biomass or nutrient status of these tree seedlings. The majority of fungal taxa observed on shrub and seedling root systems were EMF, with some dark septate endophytes and ericoid mycorrhizal taxa. Seedlings and adjacent shrubs associated with similar arrays of fungal taxa, and there were strong correlations between the structure of seedling and shrub fungal communities. These results show that resprouting postfire shrubs support fungal taxa compatible with tree seedlings that establish after wildfire. Shrub taxon, distance to the nearest shrub and fire severity influenced the similarity between seedling and shrub fungal communities. Fungal composition was correlated with both foliar C:N ratio and seedling biomass and was one of the strongest explanatory variables predicting seedling biomass. While correlative, these results suggest that mycobionts are important to nutrient acquisition and biomass accrual of naturally establishing tree seedlings at treeline and that mycobiont taxa shared by resprouting postfire vegetation may be a significant source of inoculum for tree-seedling establishment beyond current treeline.
DOI: 10.1111/mec.14143
PubMed: 28401610
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The potential for mycobiont sharing between shrubs and seedlings to facilitate tree establishment after wildfire at Alaska arctic treeline.</title><author><name sortKey="Hewitt, Rebecca E" sort="Hewitt, Rebecca E" uniqKey="Hewitt R" first="Rebecca E" last="Hewitt">Rebecca E. Hewitt</name><affiliation wicri:level="2"><nlm:affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation></author><author><name sortKey="Chapin, F Stuart" sort="Chapin, F Stuart" uniqKey="Chapin F" first="F Stuart" last="Chapin">F Stuart Chapin</name><affiliation wicri:level="2"><nlm:affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation></author><author><name sortKey="Hollingsworth, Teresa N" sort="Hollingsworth, Teresa N" uniqKey="Hollingsworth T" first="Teresa N" last="Hollingsworth">Teresa N. Hollingsworth</name><affiliation wicri:level="2"><nlm:affiliation>USDA Forest Service, Pacific Northwest Research Station, Boreal Ecology Cooperative Research Unit, Fairbanks, AK, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>USDA Forest Service, Pacific Northwest Research Station, Boreal Ecology Cooperative Research Unit, Fairbanks, AK</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation></author><author><name sortKey="Taylor, D Lee" sort="Taylor, D Lee" uniqKey="Taylor D" first="D Lee" last="Taylor">D Lee Taylor</name><affiliation wicri:level="2"><nlm:affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation><affiliation wicri:level="2"><nlm:affiliation>Department of Biology, University of New Mexico, Albuquerque, NM, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of New Mexico, Albuquerque, NM</wicri:regionArea><placeName><region type="state">Nouveau-Mexique</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2017">2017</date><idno type="RBID">pubmed:28401610</idno><idno type="pmid">28401610</idno><idno type="doi">10.1111/mec.14143</idno><idno type="wicri:Area/Main/Corpus">000D10</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">000D10</idno><idno type="wicri:Area/Main/Curation">000D10</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">000D10</idno><idno type="wicri:Area/Main/Exploration">000D10</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">The potential for mycobiont sharing between shrubs and seedlings to facilitate tree establishment after wildfire at Alaska arctic treeline.</title><author><name sortKey="Hewitt, Rebecca E" sort="Hewitt, Rebecca E" uniqKey="Hewitt R" first="Rebecca E" last="Hewitt">Rebecca E. Hewitt</name><affiliation wicri:level="2"><nlm:affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation></author><author><name sortKey="Chapin, F Stuart" sort="Chapin, F Stuart" uniqKey="Chapin F" first="F Stuart" last="Chapin">F Stuart Chapin</name><affiliation wicri:level="2"><nlm:affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation></author><author><name sortKey="Hollingsworth, Teresa N" sort="Hollingsworth, Teresa N" uniqKey="Hollingsworth T" first="Teresa N" last="Hollingsworth">Teresa N. Hollingsworth</name><affiliation wicri:level="2"><nlm:affiliation>USDA Forest Service, Pacific Northwest Research Station, Boreal Ecology Cooperative Research Unit, Fairbanks, AK, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>USDA Forest Service, Pacific Northwest Research Station, Boreal Ecology Cooperative Research Unit, Fairbanks, AK</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation></author><author><name sortKey="Taylor, D Lee" sort="Taylor, D Lee" uniqKey="Taylor D" first="D Lee" last="Taylor">D Lee Taylor</name><affiliation wicri:level="2"><nlm:affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation><affiliation wicri:level="2"><nlm:affiliation>Department of Biology, University of New Mexico, Albuquerque, NM, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of New Mexico, Albuquerque, NM</wicri:regionArea><placeName><region type="state">Nouveau-Mexique</region></placeName></affiliation></author></analytic><series><title level="j">Molecular ecology</title><idno type="eISSN">1365-294X</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alaska (MeSH)</term><term>Arctic Regions (MeSH)</term><term>Biomass (MeSH)</term><term>Fires (MeSH)</term><term>Mycorrhizae (MeSH)</term><term>Plant Roots (microbiology)</term><term>Seedlings (growth & development)</term><term>Seedlings (microbiology)</term><term>Symbiosis (MeSH)</term><term>Trees (microbiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Alaska (MeSH)</term><term>Arbres (microbiologie)</term><term>Biomasse (MeSH)</term><term>Incendies (MeSH)</term><term>Mycorhizes (MeSH)</term><term>Plant (croissance et développement)</term><term>Plant (microbiologie)</term><term>Racines de plante (microbiologie)</term><term>Régions arctiques (MeSH)</term><term>Symbiose (MeSH)</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Plant</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Seedlings</term></keywords><keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Arbres</term><term>Plant</term><term>Racines de plante</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Plant Roots</term><term>Seedlings</term><term>Trees</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Alaska</term><term>Arctic Regions</term><term>Biomass</term><term>Fires</term><term>Mycorrhizae</term><term>Symbiosis</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Alaska</term><term>Biomasse</term><term>Incendies</term><term>Mycorhizes</term><term>Régions arctiques</term><term>Symbiose</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Root-associated fungi, particularly ectomycorrhizal fungi (EMF), are critical symbionts of all boreal tree species. Although climatically driven increases in wildfire frequency and extent have been hypothesized to increase vegetation transitions from tundra to boreal forest, fire reduces mycorrhizal inoculum. Therefore, changes in mycobiont inoculum may potentially limit tree-seedling establishment beyond current treeline. We investigated whether ectomycorrhizal shrubs that resprout after fire support similar fungal taxa to those that associate with tree seedlings that establish naturally after fire. We then assessed whether mycobiont identity correlates with the biomass or nutrient status of these tree seedlings. The majority of fungal taxa observed on shrub and seedling root systems were EMF, with some dark septate endophytes and ericoid mycorrhizal taxa. Seedlings and adjacent shrubs associated with similar arrays of fungal taxa, and there were strong correlations between the structure of seedling and shrub fungal communities. These results show that resprouting postfire shrubs support fungal taxa compatible with tree seedlings that establish after wildfire. Shrub taxon, distance to the nearest shrub and fire severity influenced the similarity between seedling and shrub fungal communities. Fungal composition was correlated with both foliar C:N ratio and seedling biomass and was one of the strongest explanatory variables predicting seedling biomass. While correlative, these results suggest that mycobionts are important to nutrient acquisition and biomass accrual of naturally establishing tree seedlings at treeline and that mycobiont taxa shared by resprouting postfire vegetation may be a significant source of inoculum for tree-seedling establishment beyond current treeline.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Curated" Owner="NLM"><PMID Version="1">28401610</PMID><DateCompleted><Year>2018</Year><Month>02</Month><Day>02</Day></DateCompleted><DateRevised><Year>2018</Year><Month>12</Month><Day>02</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-294X</ISSN><JournalIssue CitedMedium="Internet"><Volume>26</Volume><Issue>14</Issue><PubDate><Year>2017</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Molecular ecology</Title><ISOAbbreviation>Mol Ecol</ISOAbbreviation></Journal><ArticleTitle>The potential for mycobiont sharing between shrubs and seedlings to facilitate tree establishment after wildfire at Alaska arctic treeline.</ArticleTitle><Pagination><MedlinePgn>3826-3838</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/mec.14143</ELocationID><Abstract><AbstractText>Root-associated fungi, particularly ectomycorrhizal fungi (EMF), are critical symbionts of all boreal tree species. Although climatically driven increases in wildfire frequency and extent have been hypothesized to increase vegetation transitions from tundra to boreal forest, fire reduces mycorrhizal inoculum. Therefore, changes in mycobiont inoculum may potentially limit tree-seedling establishment beyond current treeline. We investigated whether ectomycorrhizal shrubs that resprout after fire support similar fungal taxa to those that associate with tree seedlings that establish naturally after fire. We then assessed whether mycobiont identity correlates with the biomass or nutrient status of these tree seedlings. The majority of fungal taxa observed on shrub and seedling root systems were EMF, with some dark septate endophytes and ericoid mycorrhizal taxa. Seedlings and adjacent shrubs associated with similar arrays of fungal taxa, and there were strong correlations between the structure of seedling and shrub fungal communities. These results show that resprouting postfire shrubs support fungal taxa compatible with tree seedlings that establish after wildfire. Shrub taxon, distance to the nearest shrub and fire severity influenced the similarity between seedling and shrub fungal communities. Fungal composition was correlated with both foliar C:N ratio and seedling biomass and was one of the strongest explanatory variables predicting seedling biomass. While correlative, these results suggest that mycobionts are important to nutrient acquisition and biomass accrual of naturally establishing tree seedlings at treeline and that mycobiont taxa shared by resprouting postfire vegetation may be a significant source of inoculum for tree-seedling establishment beyond current treeline.</AbstractText><CopyrightInformation>© 2017 John Wiley & Sons Ltd.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hewitt</LastName><ForeName>Rebecca E</ForeName><Initials>RE</Initials><Identifier Source="ORCID">http://orcid.org/0000-0002-6668-8472</Identifier><AffiliationInfo><Affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Chapin</LastName><ForeName>F Stuart</ForeName><Initials>FS</Initials><Suffix>3rd</Suffix><AffiliationInfo><Affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hollingsworth</LastName><ForeName>Teresa N</ForeName><Initials>TN</Initials><AffiliationInfo><Affiliation>USDA Forest Service, Pacific Northwest Research Station, Boreal Ecology Cooperative Research Unit, Fairbanks, AK, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Taylor</LastName><ForeName>D Lee</ForeName><Initials>DL</Initials><AffiliationInfo><Affiliation>Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Department of Biology, University of New Mexico, Albuquerque, NM, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><DataBankList CompleteYN="Y"><DataBank><DataBankName>GENBANK</DataBankName><AccessionNumberList><AccessionNumber>KU176235</AccessionNumber><AccessionNumber>KU176321</AccessionNumber></AccessionNumberList></DataBank></DataBankList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>05</Month><Day>18</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Mol Ecol</MedlineTA><NlmUniqueID>9214478</NlmUniqueID><ISSNLinking>0962-1083</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000413" MajorTopicYN="N">Alaska</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001110" MajorTopicYN="N">Arctic Regions</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018533" MajorTopicYN="N">Biomass</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005390" MajorTopicYN="Y">Fires</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="Y">Mycorrhizae</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D036226" MajorTopicYN="N">Seedlings</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013559" MajorTopicYN="N">Symbiosis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Alaska</Keyword><Keyword MajorTopicYN="N">ectomycorrhizae</Keyword><Keyword MajorTopicYN="N">root-associated fungi</Keyword><Keyword MajorTopicYN="N">seedling establishment</Keyword><Keyword MajorTopicYN="N">treeline</Keyword><Keyword MajorTopicYN="N">wildfire</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2015</Year><Month>12</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2017</Year><Month>03</Month><Day>15</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2017</Year><Month>03</Month><Day>29</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>4</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2018</Year><Month>2</Month><Day>3</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2017</Year><Month>4</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">28401610</ArticleId><ArticleId IdType="doi">10.1111/mec.14143</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Alaska</li><li>Nouveau-Mexique</li></region></list><tree><country name="États-Unis"><region name="Alaska"><name sortKey="Hewitt, Rebecca E" sort="Hewitt, Rebecca E" uniqKey="Hewitt R" first="Rebecca E" last="Hewitt">Rebecca E. Hewitt</name></region><name sortKey="Chapin, F Stuart" sort="Chapin, F Stuart" uniqKey="Chapin F" first="F Stuart" last="Chapin">F Stuart Chapin</name><name sortKey="Hollingsworth, Teresa N" sort="Hollingsworth, Teresa N" uniqKey="Hollingsworth T" first="Teresa N" last="Hollingsworth">Teresa N. Hollingsworth</name><name sortKey="Taylor, D Lee" sort="Taylor, D Lee" uniqKey="Taylor D" first="D Lee" last="Taylor">D Lee Taylor</name><name sortKey="Taylor, D Lee" sort="Taylor, D Lee" uniqKey="Taylor D" first="D Lee" last="Taylor">D Lee Taylor</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Bois/explor/MycorrhizaeV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000B51 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000B51 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Bois
|area= MycorrhizaeV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= pubmed:28401610
|texte= The potential for mycobiont sharing between shrubs and seedlings to facilitate tree establishment after wildfire at Alaska arctic treeline.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:28401610" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \
| NlmPubMed2Wicri -a MycorrhizaeV1
| This area was generated with Dilib version V0.6.37. |  |