Determination of the site of CO₂ sensing in poplar: is the area-based N content and anatomy of new leaves determined by their immediate CO₂ environment or by the CO₂ environment of mature leaves?
Identifieur interne : 002F32 ( Main/Exploration ); précédent : 002F31; suivant : 002F33Determination of the site of CO₂ sensing in poplar: is the area-based N content and anatomy of new leaves determined by their immediate CO₂ environment or by the CO₂ environment of mature leaves?
Auteurs : Shin-Ichi Miyazawa [Canada] ; Charles R. Warren ; David H. Turpin ; Nigel J. LivingstonSource :
- Journal of experimental botany [ 1460-2431 ] ; 2011.
Descripteurs français
- KwdFr :
- Analyse de variance (MeSH), Azote (métabolisme), Cellules du mésophylle (cytologie), Cellules du mésophylle (effets des médicaments et des substances chimiques), Cellules du mésophylle (métabolisme), Dioxyde de carbone (pharmacologie), Environnement (MeSH), Feuilles de plante (anatomie et histologie), Feuilles de plante (croissance et développement), Feuilles de plante (cytologie), Feuilles de plante (effets des médicaments et des substances chimiques), Populus (anatomie et histologie), Populus (cytologie), Populus (effets des médicaments et des substances chimiques), Populus (métabolisme).
- MESH :
- anatomie et histologie : Feuilles de plante, Populus.
- croissance et développement : Feuilles de plante.
- cytologie : Cellules du mésophylle, Feuilles de plante, Populus.
- effets des médicaments et des substances chimiques : Cellules du mésophylle, Feuilles de plante, Populus.
- métabolisme : Azote, Cellules du mésophylle, Populus.
- pharmacologie : Dioxyde de carbone.
- Analyse de variance, Environnement.
English descriptors
- KwdEn :
- Analysis of Variance (MeSH), Carbon Dioxide (pharmacology), Environment (MeSH), Mesophyll Cells (cytology), Mesophyll Cells (drug effects), Mesophyll Cells (metabolism), Nitrogen (metabolism), Plant Leaves (anatomy & histology), Plant Leaves (cytology), Plant Leaves (drug effects), Plant Leaves (growth & development), Populus (anatomy & histology), Populus (cytology), Populus (drug effects), Populus (metabolism).
- MESH :
- chemical , metabolism : Nitrogen.
- chemical , pharmacology : Carbon Dioxide.
- anatomy & histology : Plant Leaves, Populus.
- cytology : Mesophyll Cells, Plant Leaves, Populus.
- drug effects : Mesophyll Cells, Plant Leaves, Populus.
- growth & development : Plant Leaves.
- metabolism : Mesophyll Cells, Populus.
- Analysis of Variance, Environment.
Abstract
Exposure to an elevated CO(2) concentration ([CO(2)]) generally decreases leaf N content per unit area (N(area)) and stomatal density, and increases leaf thickness. Mature leaves can 'sense' elevated [CO(2)] and this regulates stomatal development of expanding leaves (systemic regulation). It is unclear if systemic regulation is involved in determination of leaf thickness and N(area)-traits that are significantly correlated with photosynthetic capacity. A cuvette system was used whereby [CO(2)] around mature leaves was controlled separately from that around expanding leaves. Expanding leaves of poplar (Populus trichocarpa×P. deltoides) seedlings were exposed to elevated [CO(2)] (720 μmol mol(-1)) while the remaining mature leaves inside the cuvette were under ambient [CO(2)] of 360 μmol mol(-1). Reverse treatments were performed. Exposure of newly developing leaves to elevated [CO(2)] increased their thickness, but when mature leaves were exposed to elevated [CO(2)] the increase in thickness of new leaves was less pronounced. The largest response to [CO(2)] was reflected in the palisade tissue thickness (as opposed to the spongy tissue) of new leaves. The N(area) of new leaves was unaffected by the local [CO(2)] where the new leaves developed, but decreased following the exposure of mature leaves to elevated [CO(2)]. The volume fraction of mesophyll cells compared with total leaf and the mesophyll cell density changed in a manner similar to the response of N(area). These results suggest that N(area) is controlled independently of the leaf thickness, and suggest that N(area) is under systemic regulation by [CO(2)] signals from mature leaves that control mesophyll cell division.
DOI: 10.1093/jxb/erq454
PubMed: 21273339
Affiliations:
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Warren</name></author><author><name sortKey="Turpin, David H" sort="Turpin, David H" uniqKey="Turpin D" first="David H" last="Turpin">David H. Turpin</name></author><author><name sortKey="Livingston, Nigel J" sort="Livingston, Nigel J" uniqKey="Livingston N" first="Nigel J" last="Livingston">Nigel J. 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Mature leaves can 'sense' elevated [CO(2)] and this regulates stomatal development of expanding leaves (systemic regulation). It is unclear if systemic regulation is involved in determination of leaf thickness and N(area)-traits that are significantly correlated with photosynthetic capacity. A cuvette system was used whereby [CO(2)] around mature leaves was controlled separately from that around expanding leaves. Expanding leaves of poplar (Populus trichocarpa×P. deltoides) seedlings were exposed to elevated [CO(2)] (720 μmol mol(-1)) while the remaining mature leaves inside the cuvette were under ambient [CO(2)] of 360 μmol mol(-1). Reverse treatments were performed. Exposure of newly developing leaves to elevated [CO(2)] increased their thickness, but when mature leaves were exposed to elevated [CO(2)] the increase in thickness of new leaves was less pronounced. The largest response to [CO(2)] was reflected in the palisade tissue thickness (as opposed to the spongy tissue) of new leaves. The N(area) of new leaves was unaffected by the local [CO(2)] where the new leaves developed, but decreased following the exposure of mature leaves to elevated [CO(2)]. The volume fraction of mesophyll cells compared with total leaf and the mesophyll cell density changed in a manner similar to the response of N(area). These results suggest that N(area) is controlled independently of the leaf thickness, and suggest that N(area) is under systemic regulation by [CO(2)] signals from mature leaves that control mesophyll cell division.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21273339</PMID><DateCompleted><Year>2011</Year><Month>09</Month><Day>06</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1460-2431</ISSN><JournalIssue CitedMedium="Internet"><Volume>62</Volume><Issue>8</Issue><PubDate><Year>2011</Year><Month>May</Month></PubDate></JournalIssue><Title>Journal of experimental botany</Title><ISOAbbreviation>J Exp Bot</ISOAbbreviation></Journal><ArticleTitle>Determination of the site of CO₂ sensing in poplar: is the area-based N content and anatomy of new leaves determined by their immediate CO₂ environment or by the CO₂ environment of mature leaves?</ArticleTitle><Pagination><MedlinePgn>2787-96</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/jxb/erq454</ELocationID><Abstract><AbstractText>Exposure to an elevated CO(2) concentration ([CO(2)]) generally decreases leaf N content per unit area (N(area)) and stomatal density, and increases leaf thickness. Mature leaves can 'sense' elevated [CO(2)] and this regulates stomatal development of expanding leaves (systemic regulation). It is unclear if systemic regulation is involved in determination of leaf thickness and N(area)-traits that are significantly correlated with photosynthetic capacity. A cuvette system was used whereby [CO(2)] around mature leaves was controlled separately from that around expanding leaves. Expanding leaves of poplar (Populus trichocarpa×P. deltoides) seedlings were exposed to elevated [CO(2)] (720 μmol mol(-1)) while the remaining mature leaves inside the cuvette were under ambient [CO(2)] of 360 μmol mol(-1). Reverse treatments were performed. Exposure of newly developing leaves to elevated [CO(2)] increased their thickness, but when mature leaves were exposed to elevated [CO(2)] the increase in thickness of new leaves was less pronounced. The largest response to [CO(2)] was reflected in the palisade tissue thickness (as opposed to the spongy tissue) of new leaves. The N(area) of new leaves was unaffected by the local [CO(2)] where the new leaves developed, but decreased following the exposure of mature leaves to elevated [CO(2)]. The volume fraction of mesophyll cells compared with total leaf and the mesophyll cell density changed in a manner similar to the response of N(area). These results suggest that N(area) is controlled independently of the leaf thickness, and suggest that N(area) is under systemic regulation by [CO(2)] signals from mature leaves that control mesophyll cell division.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Miyazawa</LastName><ForeName>Shin-Ichi</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Centre for Forest Biology, Department of Biology, University of Victoria, PO Box 3020, Victoria, BC V8W3N5, Canada. miyashin@affrc.go.jp</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Warren</LastName><ForeName>Charles R</ForeName><Initials>CR</Initials></Author><Author ValidYN="Y"><LastName>Turpin</LastName><ForeName>David H</ForeName><Initials>DH</Initials></Author><Author ValidYN="Y"><LastName>Livingston</LastName><ForeName>Nigel J</ForeName><Initials>NJ</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2011</Year><Month>01</Month><Day>27</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Exp Bot</MedlineTA><NlmUniqueID>9882906</NlmUniqueID><ISSNLinking>0022-0957</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>142M471B3J</RegistryNumber><NameOfSubstance UI="D002245">Carbon Dioxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000704" MajorTopicYN="N">Analysis of Variance</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002245" MajorTopicYN="N">Carbon Dioxide</DescriptorName><QualifierName UI="Q000494" MajorTopicYN="Y">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004777" MajorTopicYN="Y">Environment</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D058503" MajorTopicYN="N">Mesophyll Cells</DescriptorName><QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009584" MajorTopicYN="N">Nitrogen</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName><QualifierName UI="Q000187" MajorTopicYN="Y">drug effects</QualifierName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName><QualifierName UI="Q000187" MajorTopicYN="Y">drug effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2011</Year><Month>1</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2011</Year><Month>1</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>9</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">21273339</ArticleId><ArticleId IdType="pii">erq454</ArticleId><ArticleId IdType="doi">10.1093/jxb/erq454</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Livingston, Nigel J" sort="Livingston, Nigel J" uniqKey="Livingston N" first="Nigel J" last="Livingston">Nigel J. Livingston</name><name sortKey="Turpin, David H" sort="Turpin, David H" uniqKey="Turpin D" first="David H" last="Turpin">David H. Turpin</name><name sortKey="Warren, Charles R" sort="Warren, Charles R" uniqKey="Warren C" first="Charles R" last="Warren">Charles R. Warren</name></noCountry><country name="Canada"><noRegion><name sortKey="Miyazawa, Shin Ichi" sort="Miyazawa, Shin Ichi" uniqKey="Miyazawa S" first="Shin-Ichi" last="Miyazawa">Shin-Ichi Miyazawa</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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