Foraging strategies in trees of different root morphology: the role of root lifespan.
Identifieur interne : 002688 ( Main/Exploration ); précédent : 002687; suivant : 002689Foraging strategies in trees of different root morphology: the role of root lifespan.
Auteurs : Thomas S. Adams [États-Unis] ; M Luke Mccormack ; David M. EissenstatSource :
- Tree physiology [ 1758-4469 ] ; 2013.
Descripteurs français
- KwdFr :
- Acer (anatomie et histologie), Acer (effets des médicaments et des substances chimiques), Acer (physiologie), Arbres (anatomie et histologie), Arbres (effets des médicaments et des substances chimiques), Arbres (physiologie), Azote (pharmacologie), Liriodendron (anatomie et histologie), Liriodendron (effets des médicaments et des substances chimiques), Liriodendron (physiologie), Modèles des risques proportionnels (MeSH), Pennsylvanie (MeSH), Populus (anatomie et histologie), Populus (effets des médicaments et des substances chimiques), Populus (physiologie), Racines de plante (anatomie et histologie), Racines de plante (cytologie), Racines de plante (effets des médicaments et des substances chimiques), Racines de plante (physiologie), Respiration cellulaire (effets des médicaments et des substances chimiques), Sassafras (anatomie et histologie), Sassafras (effets des médicaments et des substances chimiques), Sassafras (physiologie).
- MESH :
- anatomie et histologie : Acer, Arbres, Liriodendron, Populus, Racines de plante, Sassafras.
- cytologie : Racines de plante.
- effets des médicaments et des substances chimiques : Acer, Arbres, Liriodendron, Populus, Racines de plante, Respiration cellulaire, Sassafras.
- pharmacologie : Azote.
- physiologie : Acer, Arbres, Liriodendron, Populus, Racines de plante, Sassafras.
- Modèles des risques proportionnels, Pennsylvanie.
English descriptors
- KwdEn :
- Acer (anatomy & histology), Acer (drug effects), Acer (physiology), Cell Respiration (drug effects), Liriodendron (anatomy & histology), Liriodendron (drug effects), Liriodendron (physiology), Nitrogen (pharmacology), Pennsylvania (MeSH), Plant Roots (anatomy & histology), Plant Roots (cytology), Plant Roots (drug effects), Plant Roots (physiology), Populus (anatomy & histology), Populus (drug effects), Populus (physiology), Proportional Hazards Models (MeSH), Sassafras (anatomy & histology), Sassafras (drug effects), Sassafras (physiology), Trees (anatomy & histology), Trees (drug effects), Trees (physiology).
- MESH :
- chemical , pharmacology : Nitrogen.
- geographic : Pennsylvania.
- anatomy & histology : Acer, Liriodendron, Plant Roots, Populus, Sassafras, Trees.
- cytology : Plant Roots.
- drug effects : Acer, Cell Respiration, Liriodendron, Plant Roots, Populus, Sassafras, Trees.
- physiology : Acer, Liriodendron, Plant Roots, Populus, Sassafras, Trees.
- Proportional Hazards Models.
Abstract
Resource exploitation of patches is influenced not simply by the rate of root production in the patches but also by the lifespan of the roots inhabiting the patches. We examined the effect of sustained localized nitrogen (N) fertilization on root lifespan in four tree species that varied widely in root morphology and presumed foraging strategy. The study was conducted in a 12-year-old common garden in central Pennsylvania using a combination of data from minirhizotron and root in-growth cores. The two fine-root tree species, Acer negundo L. and Populus tremuloides Michx., exhibited significant increases in root lifespan with local N fertilization; no significant responses were observed in the two coarse-root tree species, Sassafras albidum Nutt. and Liriodendron tulipifera L. Across species, coarse-root tree species had longer median root lifespan than fine-root tree species. Localized N fertilization did not significantly increase the N concentration or the respiration of the roots growing in the N-rich patch. Our results suggest that some plant species appear to regulate the lifespan of different portions of their root system to improve resource acquisition while other species do not. Our results are discussed in the context of different strategies of foraging of nutrient patches in species of different root morphology.
DOI: 10.1093/treephys/tpt067
PubMed: 24128849
Affiliations:
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We examined the effect of sustained localized nitrogen (N) fertilization on root lifespan in four tree species that varied widely in root morphology and presumed foraging strategy. The study was conducted in a 12-year-old common garden in central Pennsylvania using a combination of data from minirhizotron and root in-growth cores. The two fine-root tree species, Acer negundo L. and Populus tremuloides Michx., exhibited significant increases in root lifespan with local N fertilization; no significant responses were observed in the two coarse-root tree species, Sassafras albidum Nutt. and Liriodendron tulipifera L. Across species, coarse-root tree species had longer median root lifespan than fine-root tree species. Localized N fertilization did not significantly increase the N concentration or the respiration of the roots growing in the N-rich patch. Our results suggest that some plant species appear to regulate the lifespan of different portions of their root system to improve resource acquisition while other species do not. Our results are discussed in the context of different strategies of foraging of nutrient patches in species of different root morphology. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24128849</PMID><DateCompleted><Year>2014</Year><Month>04</Month><Day>29</Day></DateCompleted><DateRevised><Year>2013</Year><Month>10</Month><Day>16</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN><JournalIssue CitedMedium="Internet"><Volume>33</Volume><Issue>9</Issue><PubDate><Year>2013</Year><Month>Sep</Month></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Foraging strategies in trees of different root morphology: the role of root lifespan.</ArticleTitle><Pagination><MedlinePgn>940-8</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/treephys/tpt067</ELocationID><Abstract><AbstractText>Resource exploitation of patches is influenced not simply by the rate of root production in the patches but also by the lifespan of the roots inhabiting the patches. We examined the effect of sustained localized nitrogen (N) fertilization on root lifespan in four tree species that varied widely in root morphology and presumed foraging strategy. The study was conducted in a 12-year-old common garden in central Pennsylvania using a combination of data from minirhizotron and root in-growth cores. The two fine-root tree species, Acer negundo L. and Populus tremuloides Michx., exhibited significant increases in root lifespan with local N fertilization; no significant responses were observed in the two coarse-root tree species, Sassafras albidum Nutt. and Liriodendron tulipifera L. Across species, coarse-root tree species had longer median root lifespan than fine-root tree species. Localized N fertilization did not significantly increase the N concentration or the respiration of the roots growing in the N-rich patch. Our results suggest that some plant species appear to regulate the lifespan of different portions of their root system to improve resource acquisition while other species do not. Our results are discussed in the context of different strategies of foraging of nutrient patches in species of different root morphology. </AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Adams</LastName><ForeName>Thomas S</ForeName><Initials>TS</Initials><AffiliationInfo><Affiliation>Department of Ecosystem Science and Management and Intercollege Graduate Program in Ecology, Pennsylvania State University, University Park, PA 16802, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>McCormack</LastName><ForeName>M Luke</ForeName><Initials>ML</Initials></Author><Author ValidYN="Y"><LastName>Eissenstat</LastName><ForeName>David M</ForeName><Initials>DM</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, 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UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D016016" MajorTopicYN="N">Proportional Hazards Models</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D027441" MajorTopicYN="N">Sassafras</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">localized nitrogen addition</Keyword><Keyword MajorTopicYN="N">minirhizotron</Keyword><Keyword MajorTopicYN="N">resource optimization</Keyword><Keyword MajorTopicYN="N">root efficiency</Keyword><Keyword MajorTopicYN="N">root foraging</Keyword><Keyword MajorTopicYN="N">root longevity</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>10</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2013</Year><Month>10</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>4</Month><Day>30</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24128849</ArticleId><ArticleId IdType="pii">tpt067</ArticleId><ArticleId IdType="doi">10.1093/treephys/tpt067</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Pennsylvanie</li></region><settlement><li>University Park (Pennsylvanie)</li></settlement><orgName><li>Université d'État de Pennsylvanie</li></orgName></list><tree><noCountry><name sortKey="Eissenstat, David M" sort="Eissenstat, David M" uniqKey="Eissenstat D" first="David M" last="Eissenstat">David M. Eissenstat</name><name sortKey="Mccormack, M Luke" sort="Mccormack, M Luke" uniqKey="Mccormack M" first="M Luke" last="Mccormack">M Luke Mccormack</name></noCountry><country name="États-Unis"><region name="Pennsylvanie"><name sortKey="Adams, Thomas S" sort="Adams, Thomas S" uniqKey="Adams T" first="Thomas S" last="Adams">Thomas S. Adams</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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