Temperature responses of photosynthesis and respiration in Populus balsamifera L.: acclimation versus adaptation.
Identifieur interne : 003095 ( Main/Exploration ); précédent : 003094; suivant : 003096Temperature responses of photosynthesis and respiration in Populus balsamifera L.: acclimation versus adaptation.
Auteurs : Salim N. Silim [Canada] ; Natalie Ryan ; David S. KubienSource :
- Photosynthesis research [ 1573-5079 ] ; 2010.
Descripteurs français
- KwdFr :
- Acclimatation (physiologie), Adaptation physiologique (physiologie), Dioxyde de carbone (métabolisme), Photosynthèse (physiologie), Populus (métabolisme), Populus (physiologie), Respiration cellulaire (physiologie), Ribulose bisphosphate carboxylase (métabolisme), Stomates de plante (physiologie), Température (MeSH).
- MESH :
- métabolisme : Dioxyde de carbone, Populus, Ribulose bisphosphate carboxylase.
- physiologie : Acclimatation, Adaptation physiologique, Photosynthèse, Populus, Respiration cellulaire, Stomates de plante.
- Température.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbon Dioxide, Ribulose-Bisphosphate Carboxylase.
- metabolism : Populus.
- physiology : Acclimatization, Adaptation, Physiological, Cell Respiration, Photosynthesis, Plant Stomata, Populus.
- Temperature.
Abstract
To examine the role of acclimation versus adaptation on the temperature responses of CO(2) assimilation, we measured dark respiration (R(n)) and the CO(2) response of net photosynthesis (A) in Populus balsamifera collected from warm and cool habitats and grown at warm and cool temperatures. R(n) and the rate of photosynthetic electron transport (J) are significantly higher in plants grown at 19 versus 27 degrees C; R(n) is not affected by the native thermal habitat. By contrast, both the maximum capacity of rubisco (V(cmax)) and A are relatively insensitive to growth temperature, but both parameters are slightly higher in plants from cool habitats. A is limited by rubisco capacity from 17-37 degrees C regardless of growth temperature, and there is little evidence for an electron-transport limitation. Stomatal conductance (g(s)) is higher in warm-grown plants, but declines with increasing measurement temperature from 17 to 37 degrees C, regardless of growth temperature. The mesophyll conductance (g(m)) is relatively temperature insensitive below 25 degrees C, but g(m) declines at 37 degrees C in cool-grown plants. Plants acclimated to cool temperatures have increased R(n)/A, but this response does not differ between warm- and cool-adapted populations. Primary carbon metabolism clearly acclimates to growth temperature in P. balsamifera, but the ecotypic differences in A suggest that global warming scenarios might affect populations at the northern and southern edges of the boreal forest in different ways.
DOI: 10.1007/s11120-010-9527-y
PubMed: 20112068
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Kubien</name></author></analytic><series><title level="j">Photosynthesis research</title><idno type="eISSN">1573-5079</idno><imprint><date when="2010" type="published">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acclimatization (physiology)</term><term>Adaptation, Physiological (physiology)</term><term>Carbon Dioxide (metabolism)</term><term>Cell Respiration (physiology)</term><term>Photosynthesis (physiology)</term><term>Plant Stomata (physiology)</term><term>Populus (metabolism)</term><term>Populus (physiology)</term><term>Ribulose-Bisphosphate Carboxylase (metabolism)</term><term>Temperature (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acclimatation (physiologie)</term><term>Adaptation physiologique (physiologie)</term><term>Dioxyde de carbone (métabolisme)</term><term>Photosynthèse (physiologie)</term><term>Populus (métabolisme)</term><term>Populus (physiologie)</term><term>Respiration cellulaire (physiologie)</term><term>Ribulose bisphosphate carboxylase (métabolisme)</term><term>Stomates de plante (physiologie)</term><term>Température (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon Dioxide</term><term>Ribulose-Bisphosphate Carboxylase</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Dioxyde de carbone</term><term>Populus</term><term>Ribulose bisphosphate carboxylase</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Acclimatation</term><term>Adaptation physiologique</term><term>Photosynthèse</term><term>Populus</term><term>Respiration cellulaire</term><term>Stomates de plante</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Acclimatization</term><term>Adaptation, Physiological</term><term>Cell Respiration</term><term>Photosynthesis</term><term>Plant Stomata</term><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Temperature</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Température</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To examine the role of acclimation versus adaptation on the temperature responses of CO(2) assimilation, we measured dark respiration (R(n)) and the CO(2) response of net photosynthesis (A) in Populus balsamifera collected from warm and cool habitats and grown at warm and cool temperatures. R(n) and the rate of photosynthetic electron transport (J) are significantly higher in plants grown at 19 versus 27 degrees C; R(n) is not affected by the native thermal habitat. By contrast, both the maximum capacity of rubisco (V(cmax)) and A are relatively insensitive to growth temperature, but both parameters are slightly higher in plants from cool habitats. A is limited by rubisco capacity from 17-37 degrees C regardless of growth temperature, and there is little evidence for an electron-transport limitation. Stomatal conductance (g(s)) is higher in warm-grown plants, but declines with increasing measurement temperature from 17 to 37 degrees C, regardless of growth temperature. The mesophyll conductance (g(m)) is relatively temperature insensitive below 25 degrees C, but g(m) declines at 37 degrees C in cool-grown plants. Plants acclimated to cool temperatures have increased R(n)/A, but this response does not differ between warm- and cool-adapted populations. Primary carbon metabolism clearly acclimates to growth temperature in P. balsamifera, but the ecotypic differences in A suggest that global warming scenarios might affect populations at the northern and southern edges of the boreal forest in different ways.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20112068</PMID><DateCompleted><Year>2010</Year><Month>07</Month><Day>26</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1573-5079</ISSN><JournalIssue CitedMedium="Internet"><Volume>104</Volume><Issue>1</Issue><PubDate><Year>2010</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Photosynthesis research</Title><ISOAbbreviation>Photosynth Res</ISOAbbreviation></Journal><ArticleTitle>Temperature responses of photosynthesis and respiration in Populus balsamifera L.: acclimation versus adaptation.</ArticleTitle><Pagination><MedlinePgn>19-30</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s11120-010-9527-y</ELocationID><Abstract><AbstractText>To examine the role of acclimation versus adaptation on the temperature responses of CO(2) assimilation, we measured dark respiration (R(n)) and the CO(2) response of net photosynthesis (A) in Populus balsamifera collected from warm and cool habitats and grown at warm and cool temperatures. R(n) and the rate of photosynthetic electron transport (J) are significantly higher in plants grown at 19 versus 27 degrees C; R(n) is not affected by the native thermal habitat. By contrast, both the maximum capacity of rubisco (V(cmax)) and A are relatively insensitive to growth temperature, but both parameters are slightly higher in plants from cool habitats. A is limited by rubisco capacity from 17-37 degrees C regardless of growth temperature, and there is little evidence for an electron-transport limitation. Stomatal conductance (g(s)) is higher in warm-grown plants, but declines with increasing measurement temperature from 17 to 37 degrees C, regardless of growth temperature. The mesophyll conductance (g(m)) is relatively temperature insensitive below 25 degrees C, but g(m) declines at 37 degrees C in cool-grown plants. Plants acclimated to cool temperatures have increased R(n)/A, but this response does not differ between warm- and cool-adapted populations. Primary carbon metabolism clearly acclimates to growth temperature in P. balsamifera, but the ecotypic differences in A suggest that global warming scenarios might affect populations at the northern and southern edges of the boreal forest in different ways.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Silim</LastName><ForeName>Salim N</ForeName><Initials>SN</Initials><AffiliationInfo><Affiliation>The Shelterbelt Centre, Agriculture and Agri-Food Canada, Indian Head, SK, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ryan</LastName><ForeName>Natalie</ForeName><Initials>N</Initials></Author><Author ValidYN="Y"><LastName>Kubien</LastName><ForeName>David S</ForeName><Initials>DS</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. 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Kubien</name><name sortKey="Ryan, Natalie" sort="Ryan, Natalie" uniqKey="Ryan N" first="Natalie" last="Ryan">Natalie Ryan</name></noCountry><country name="Canada"><noRegion><name sortKey="Silim, Salim N" sort="Silim, Salim N" uniqKey="Silim S" first="Salim N" last="Silim">Salim N. Silim</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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