Photosynthetic stimulation under long-term CO2 enrichment and fertilization is sustained across a closed Populus canopy profile (EUROFACE).
Identifieur interne : 003B02 ( Main/Exploration ); précédent : 003B01; suivant : 003B03Photosynthetic stimulation under long-term CO2 enrichment and fertilization is sustained across a closed Populus canopy profile (EUROFACE).
Auteurs : Marion Liberloo [Belgique] ; Ingmar Tulva ; Olaf Raïm ; Olevi Kull ; Reinhart CeulemansSource :
- The New phytologist [ 0028-646X ] ; 2007.
Descripteurs français
- KwdFr :
- Analyse de variance (MeSH), Azote (métabolisme), Chlorophylle (métabolisme), Dioxyde de carbone (métabolisme), Engrais (MeSH), Feuilles de plante (effets des radiations), Feuilles de plante (physiologie), Lumière (MeSH), Photosynthèse (MeSH), Populus (anatomie et histologie), Populus (effets des radiations), Populus (physiologie).
- MESH :
- anatomie et histologie : Populus.
- effets des radiations : Feuilles de plante, Populus.
- métabolisme : Azote, Chlorophylle, Dioxyde de carbone.
- physiologie : Feuilles de plante, Populus.
- Analyse de variance, Engrais, Lumière, Photosynthèse.
English descriptors
- KwdEn :
- Analysis of Variance (MeSH), Carbon Dioxide (metabolism), Chlorophyll (metabolism), Fertilizers (MeSH), Light (MeSH), Nitrogen (metabolism), Photosynthesis (MeSH), Plant Leaves (physiology), Plant Leaves (radiation effects), Populus (anatomy & histology), Populus (physiology), Populus (radiation effects).
- MESH :
- chemical , metabolism : Carbon Dioxide, Chlorophyll, Nitrogen.
- anatomy & histology : Populus.
- physiology : Plant Leaves, Populus.
- radiation effects : Plant Leaves, Populus.
- Analysis of Variance, Fertilizers, Light, Photosynthesis.
Abstract
The long-term response of leaf photosynthesis to rising CO2 concentrations [CO2] depends on biochemical and morphological feedbacks. Additionally, responses to elevated [CO2] might depend on the nutrient availability and the light environment, affecting the net carbon uptake of a forest stand. After 6 yr of exposure to free-air CO2 enrichment (EUROFACE) during two rotation cycles (with fertilization during the second cycle), profiles of light, leaf characteristics and photosynthetic parameters were measured in the closed canopy of a poplar (Populus) short-rotation coppice. Net photosynthetic rate (A(growth)) was 49% higher in poplars grown in elevated [CO2], independently of the canopy position. Jmax significantly increased (15%), whereas leaf carboxylation capacity (Vcmax), leaf nitrogen (N(a)) and chlorophyll (Chl(a)) were unaffected in elevated [CO2]. Leaf mass per unit area (LMA) increased in the upper canopy. Fertilization created more leaves in the top of the crown. These results suggest that the photosynthetic stimulation by elevated [CO2] in a closed-canopy poplar coppice might be sustained in the long term. The absence of any down-regulation, given a sufficient sink capacity and nutrient availability, provides more carbon for growth and storage in this bioenergy plantation.
DOI: 10.1111/j.1469-8137.2006.01926.x
PubMed: 17244048
Affiliations:
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(anatomie et histologie)</term><term>Populus (effets des radiations)</term><term>Populus (physiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon Dioxide</term><term>Chlorophyll</term><term>Nitrogen</term></keywords><keywords scheme="MESH" qualifier="anatomie et histologie" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><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="métabolisme" xml:lang="fr"><term>Azote</term><term>Chlorophylle</term><term>Dioxyde de carbone</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Feuilles de plante</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="physiology" 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>Analysis of Variance</term><term>Fertilizers</term><term>Light</term><term>Photosynthesis</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Analyse de variance</term><term>Engrais</term><term>Lumière</term><term>Photosynthèse</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The long-term response of leaf photosynthesis to rising CO2 concentrations [CO2] depends on biochemical and morphological feedbacks. Additionally, responses to elevated [CO2] might depend on the nutrient availability and the light environment, affecting the net carbon uptake of a forest stand. After 6 yr of exposure to free-air CO2 enrichment (EUROFACE) during two rotation cycles (with fertilization during the second cycle), profiles of light, leaf characteristics and photosynthetic parameters were measured in the closed canopy of a poplar (Populus) short-rotation coppice. Net photosynthetic rate (A(growth)) was 49% higher in poplars grown in elevated [CO2], independently of the canopy position. Jmax significantly increased (15%), whereas leaf carboxylation capacity (Vcmax), leaf nitrogen (N(a)) and chlorophyll (Chl(a)) were unaffected in elevated [CO2]. Leaf mass per unit area (LMA) increased in the upper canopy. Fertilization created more leaves in the top of the crown. These results suggest that the photosynthetic stimulation by elevated [CO2] in a closed-canopy poplar coppice might be sustained in the long term. The absence of any down-regulation, given a sufficient sink capacity and nutrient availability, provides more carbon for growth and storage in this bioenergy plantation.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17244048</PMID><DateCompleted><Year>2007</Year><Month>03</Month><Day>21</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0028-646X</ISSN><JournalIssue CitedMedium="Print"><Volume>173</Volume><Issue>3</Issue><PubDate><Year>2007</Year></PubDate></JournalIssue><Title>The New phytologist</Title><ISOAbbreviation>New Phytol</ISOAbbreviation></Journal><ArticleTitle>Photosynthetic stimulation under long-term CO2 enrichment and fertilization is sustained across a closed Populus canopy profile (EUROFACE).</ArticleTitle><Pagination><MedlinePgn>537-49</MedlinePgn></Pagination><Abstract><AbstractText>The long-term response of leaf photosynthesis to rising CO2 concentrations [CO2] depends on biochemical and morphological feedbacks. Additionally, responses to elevated [CO2] might depend on the nutrient availability and the light environment, affecting the net carbon uptake of a forest stand. After 6 yr of exposure to free-air CO2 enrichment (EUROFACE) during two rotation cycles (with fertilization during the second cycle), profiles of light, leaf characteristics and photosynthetic parameters were measured in the closed canopy of a poplar (Populus) short-rotation coppice. Net photosynthetic rate (A(growth)) was 49% higher in poplars grown in elevated [CO2], independently of the canopy position. Jmax significantly increased (15%), whereas leaf carboxylation capacity (Vcmax), leaf nitrogen (N(a)) and chlorophyll (Chl(a)) were unaffected in elevated [CO2]. Leaf mass per unit area (LMA) increased in the upper canopy. Fertilization created more leaves in the top of the crown. These results suggest that the photosynthetic stimulation by elevated [CO2] in a closed-canopy poplar coppice might be sustained in the long term. The absence of any down-regulation, given a sufficient sink capacity and nutrient availability, provides more carbon for growth and storage in this bioenergy plantation.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Liberloo</LastName><ForeName>Marion</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>University of Antwerp, Research Group of Plant and Vegetation Ecology, Department of Biology, Campus Drie Eiken, Universiteitsplein 1, 2610 Wilrijk, Belgium. marion.liberloo@ua.ac.be</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Tulva</LastName><ForeName>Ingmar</ForeName><Initials>I</Initials></Author><Author ValidYN="Y"><LastName>Raïm</LastName><ForeName>Olaf</ForeName><Initials>O</Initials></Author><Author ValidYN="Y"><LastName>Kull</LastName><ForeName>Olevi</ForeName><Initials>O</Initials></Author><Author ValidYN="Y"><LastName>Ceulemans</LastName><ForeName>Reinhart</ForeName><Initials>R</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>New Phytol</MedlineTA><NlmUniqueID>9882884</NlmUniqueID><ISSNLinking>0028-646X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D005308">Fertilizers</NameOfSubstance></Chemical><Chemical><RegistryNumber>1406-65-1</RegistryNumber><NameOfSubstance UI="D002734">Chlorophyll</NameOfSubstance></Chemical><Chemical><RegistryNumber>142M471B3J</RegistryNumber><NameOfSubstance UI="D002245">Carbon Dioxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance 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MajorTopicYN="Y">Photosynthesis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName><QualifierName UI="Q000528" MajorTopicYN="N">radiation effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName><QualifierName UI="Q000528" MajorTopicYN="N">radiation effects</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>1</Month><Day>25</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2007</Year><Month>3</Month><Day>22</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate 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sort="Tulva, Ingmar" uniqKey="Tulva I" first="Ingmar" last="Tulva">Ingmar Tulva</name></noCountry><country name="Belgique"><region name="Région flamande"><name sortKey="Liberloo, Marion" sort="Liberloo, Marion" uniqKey="Liberloo M" first="Marion" last="Liberloo">Marion Liberloo</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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