Comparative leaf growth strategies in response to low-water and low-light availability: variation in leaf physiology underlies variation in leaf mass per area in Populus tremuloides.
Identifieur interne : 001467 ( Main/Exploration ); précédent : 001466; suivant : 001468Comparative leaf growth strategies in response to low-water and low-light availability: variation in leaf physiology underlies variation in leaf mass per area in Populus tremuloides.
Auteurs : Alec S. Baird [États-Unis] ; Leander D L. Anderegg [États-Unis] ; Melissa E. Lacey [États-Unis] ; Janneke Hillerislambers [États-Unis] ; Elizabeth Van Volkenburgh [États-Unis]Source :
- Tree physiology [ 1758-4469 ] ; 2017.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Feuilles de plante, Populus.
- effets des radiations : Feuilles de plante, Populus.
- Changement climatique, Eau, Lumière, Photosynthèse.
English descriptors
- KwdEn :
- MESH :
- chemical : Water.
- growth & development : Plant Leaves, Populus.
- radiation effects : Plant Leaves, Populus.
- Climate Change, Light, Photosynthesis.
Abstract
Developmental phenotypic plasticity can allow plants to buffer the effects of abiotic and biotic environmental stressors. Therefore, it is vital to improve our understanding of how phenotypic plasticity in ecological functional traits is coordinated with variation in physiological performance in plants. To identify coordinated leaf responses to low-water (LW) versus low-light (LL) availability, we measured leaf mass per area (LMA), leaf anatomical characteristics and leaf gas exchange of juvenile Populus tremuloides Michx. trees. Spongy mesophyll tissue surface area (Asmes/A) was correlated with intrinsic water-use efficiency (WUEi: photosynthesis, (Aarea)/stomatal conductance (gs)). Under LW availability, these changes occurred at the cost of greater leaf tissue density and reduced expansive growth, as leaves were denser but were only 20% the final area of control leaves, resulting in elevated LMA and elevated WUEi. Low light resulted in reduced palisade mesophyll surface area (Apmes/A) while spongy mesophyll surface area was maintained (Asmes/A), with no changes to WUEi. These leaf morphological changes may be a plastic strategy to increase laminar light capture while maintaining WUEi. With reduced density and thickness, however, leaves were 50% the area of control leaves, ultimately resulting in reduced LMA. Our results illustrate that P. tremuloides saplings partially maintain physiological function in response to water and light limitation by inducing developmental plasticity in LMA with underlying anatomical changes. We discuss additional implications of these results in the context of developmental plasticity, growth trade-offs and the ecological impacts of climate change.
DOI: 10.1093/treephys/tpx035
PubMed: 28379516
Affiliations:
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Baird</name><affiliation wicri:level="4"><nlm:affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195</wicri:regionArea><placeName><region type="state">Washington (État)</region><settlement type="city">Seattle</settlement></placeName><orgName type="university">Université de Washington</orgName></affiliation></author><author><name sortKey="Anderegg, Leander D L" sort="Anderegg, Leander D L" uniqKey="Anderegg L" first="Leander D L" last="Anderegg">Leander D L. Anderegg</name><affiliation wicri:level="4"><nlm:affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195</wicri:regionArea><placeName><region type="state">Washington (État)</region><settlement type="city">Seattle</settlement></placeName><orgName type="university">Université de Washington</orgName></affiliation></author><author><name sortKey="Lacey, Melissa E" sort="Lacey, Melissa E" uniqKey="Lacey M" first="Melissa E" last="Lacey">Melissa E. Lacey</name><affiliation wicri:level="4"><nlm:affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195</wicri:regionArea><placeName><region type="state">Washington (État)</region><settlement type="city">Seattle</settlement></placeName><orgName type="university">Université de Washington</orgName></affiliation></author><author><name sortKey="Hillerislambers, Janneke" sort="Hillerislambers, Janneke" uniqKey="Hillerislambers J" first="Janneke" last="Hillerislambers">Janneke Hillerislambers</name><affiliation wicri:level="4"><nlm:affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195</wicri:regionArea><placeName><region type="state">Washington (État)</region><settlement type="city">Seattle</settlement></placeName><orgName type="university">Université de Washington</orgName></affiliation></author><author><name sortKey="Van Volkenburgh, Elizabeth" sort="Van Volkenburgh, Elizabeth" uniqKey="Van Volkenburgh E" first="Elizabeth" last="Van Volkenburgh">Elizabeth Van Volkenburgh</name><affiliation wicri:level="4"><nlm:affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195</wicri:regionArea><placeName><region type="state">Washington (État)</region><settlement type="city">Seattle</settlement></placeName><orgName type="university">Université de Washington</orgName></affiliation></author></analytic><series><title level="j">Tree physiology</title><idno type="eISSN">1758-4469</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Climate Change (MeSH)</term><term>Light (MeSH)</term><term>Photosynthesis (MeSH)</term><term>Plant Leaves (growth & development)</term><term>Plant Leaves (radiation effects)</term><term>Populus (growth & development)</term><term>Populus (radiation effects)</term><term>Water (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Changement climatique (MeSH)</term><term>Eau (MeSH)</term><term>Feuilles de plante (croissance et développement)</term><term>Feuilles de plante (effets des radiations)</term><term>Lumière (MeSH)</term><term>Photosynthèse (MeSH)</term><term>Populus (croissance et développement)</term><term>Populus (effets des radiations)</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Water</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Feuilles de plante</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="effets des radiations" xml:lang="fr"><term>Feuilles de plante</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plant Leaves</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="radiation effects" xml:lang="en"><term>Plant Leaves</term><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Climate Change</term><term>Light</term><term>Photosynthesis</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Changement climatique</term><term>Eau</term><term>Lumière</term><term>Photosynthèse</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Developmental phenotypic plasticity can allow plants to buffer the effects of abiotic and biotic environmental stressors. Therefore, it is vital to improve our understanding of how phenotypic plasticity in ecological functional traits is coordinated with variation in physiological performance in plants. To identify coordinated leaf responses to low-water (LW) versus low-light (LL) availability, we measured leaf mass per area (LMA), leaf anatomical characteristics and leaf gas exchange of juvenile Populus tremuloides Michx. trees. Spongy mesophyll tissue surface area (Asmes/A) was correlated with intrinsic water-use efficiency (WUEi: photosynthesis, (Aarea)/stomatal conductance (gs)). Under LW availability, these changes occurred at the cost of greater leaf tissue density and reduced expansive growth, as leaves were denser but were only 20% the final area of control leaves, resulting in elevated LMA and elevated WUEi. Low light resulted in reduced palisade mesophyll surface area (Apmes/A) while spongy mesophyll surface area was maintained (Asmes/A), with no changes to WUEi. These leaf morphological changes may be a plastic strategy to increase laminar light capture while maintaining WUEi. With reduced density and thickness, however, leaves were 50% the area of control leaves, ultimately resulting in reduced LMA. Our results illustrate that P. tremuloides saplings partially maintain physiological function in response to water and light limitation by inducing developmental plasticity in LMA with underlying anatomical changes. We discuss additional implications of these results in the context of developmental plasticity, growth trade-offs and the ecological impacts of climate change.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Curated" Owner="NLM"><PMID Version="1">28379516</PMID><DateCompleted><Year>2018</Year><Month>01</Month><Day>15</Day></DateCompleted><DateRevised><Year>2018</Year><Month>12</Month><Day>02</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN><JournalIssue CitedMedium="Internet"><Volume>37</Volume><Issue>9</Issue><PubDate><Year>2017</Year><Month>09</Month><Day>01</Day></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Comparative leaf growth strategies in response to low-water and low-light availability: variation in leaf physiology underlies variation in leaf mass per area in Populus tremuloides.</ArticleTitle><Pagination><MedlinePgn>1140-1150</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/treephys/tpx035</ELocationID><Abstract><AbstractText>Developmental phenotypic plasticity can allow plants to buffer the effects of abiotic and biotic environmental stressors. Therefore, it is vital to improve our understanding of how phenotypic plasticity in ecological functional traits is coordinated with variation in physiological performance in plants. To identify coordinated leaf responses to low-water (LW) versus low-light (LL) availability, we measured leaf mass per area (LMA), leaf anatomical characteristics and leaf gas exchange of juvenile Populus tremuloides Michx. trees. Spongy mesophyll tissue surface area (Asmes/A) was correlated with intrinsic water-use efficiency (WUEi: photosynthesis, (Aarea)/stomatal conductance (gs)). Under LW availability, these changes occurred at the cost of greater leaf tissue density and reduced expansive growth, as leaves were denser but were only 20% the final area of control leaves, resulting in elevated LMA and elevated WUEi. Low light resulted in reduced palisade mesophyll surface area (Apmes/A) while spongy mesophyll surface area was maintained (Asmes/A), with no changes to WUEi. These leaf morphological changes may be a plastic strategy to increase laminar light capture while maintaining WUEi. With reduced density and thickness, however, leaves were 50% the area of control leaves, ultimately resulting in reduced LMA. Our results illustrate that P. tremuloides saplings partially maintain physiological function in response to water and light limitation by inducing developmental plasticity in LMA with underlying anatomical changes. We discuss additional implications of these results in the context of developmental plasticity, growth trade-offs and the ecological impacts of climate change.</AbstractText><CopyrightInformation>© The Author 2017. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Baird</LastName><ForeName>Alec S</ForeName><Initials>AS</Initials><AffiliationInfo><Affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Anderegg</LastName><ForeName>Leander D L</ForeName><Initials>LDL</Initials><AffiliationInfo><Affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lacey</LastName><ForeName>Melissa E</ForeName><Initials>ME</Initials><AffiliationInfo><Affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>HilleRisLambers</LastName><ForeName>Janneke</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Van Volkenburgh</LastName><ForeName>Elizabeth</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Department of Biology, University of Washington, Box 351800, Seattle, WA 98195, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance UI="D014867">Water</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D057231" MajorTopicYN="N">Climate Change</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008027" MajorTopicYN="Y">Light</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000528" MajorTopicYN="N">radiation effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000528" MajorTopicYN="N">radiation effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014867" MajorTopicYN="Y">Water</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">acclimation</Keyword><Keyword MajorTopicYN="Y">environmental stress</Keyword><Keyword MajorTopicYN="Y">leaf functional anatomy</Keyword><Keyword MajorTopicYN="Y">specific leaf area (SLA)</Keyword><Keyword MajorTopicYN="Y">trembling aspen</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>09</Month><Day>05</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2017</Year><Month>03</Month><Day>16</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>4</Month><Day>6</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2018</Year><Month>1</Month><Day>16</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2017</Year><Month>4</Month><Day>6</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">28379516</ArticleId><ArticleId IdType="pii">3100229</ArticleId><ArticleId IdType="doi">10.1093/treephys/tpx035</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Washington (État)</li></region><settlement><li>Seattle</li></settlement><orgName><li>Université de Washington</li></orgName></list><tree><country name="États-Unis"><region name="Washington (État)"><name sortKey="Baird, Alec S" sort="Baird, Alec S" uniqKey="Baird A" first="Alec S" last="Baird">Alec S. Baird</name></region><name sortKey="Anderegg, Leander D L" sort="Anderegg, Leander D L" uniqKey="Anderegg L" first="Leander D L" last="Anderegg">Leander D L. Anderegg</name><name sortKey="Hillerislambers, Janneke" sort="Hillerislambers, Janneke" uniqKey="Hillerislambers J" first="Janneke" last="Hillerislambers">Janneke Hillerislambers</name><name sortKey="Lacey, Melissa E" sort="Lacey, Melissa E" uniqKey="Lacey M" first="Melissa E" last="Lacey">Melissa E. Lacey</name><name sortKey="Van Volkenburgh, Elizabeth" sort="Van Volkenburgh, Elizabeth" uniqKey="Van Volkenburgh E" first="Elizabeth" last="Van Volkenburgh">Elizabeth Van Volkenburgh</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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