Spatiotemporal distribution of essential elements through Populus leaf ontogeny.
Identifieur interne : 001664 ( Main/Exploration ); précédent : 001663; suivant : 001665Spatiotemporal distribution of essential elements through Populus leaf ontogeny.
Auteurs : M Nica R. Carvalho [États-Unis] ; Arthur Woll [États-Unis] ; Karl J. Niklas [États-Unis]Source :
- Journal of experimental botany [ 1460-2431 ] ; 2016.
Descripteurs français
- KwdFr :
- Calcium (métabolisme), Feuilles de plante (croissance et développement), Feuilles de plante (métabolisme), Métabolisme glucidique (MeSH), Phloème (croissance et développement), Populus (croissance et développement), Populus (métabolisme), Potassium (métabolisme), Spectrométrie d'émission X (MeSH), Xylème (croissance et développement), Zinc (métabolisme).
- MESH :
- croissance et développement : Feuilles de plante, Phloème, Populus, Xylème.
- métabolisme : Calcium, Feuilles de plante, Populus, Potassium, Zinc.
- Métabolisme glucidique, Spectrométrie d'émission X.
English descriptors
- KwdEn :
- Calcium (metabolism), Carbohydrate Metabolism (MeSH), Phloem (growth & development), Plant Leaves (growth & development), Plant Leaves (metabolism), Populus (growth & development), Populus (metabolism), Potassium (metabolism), Spectrometry, X-Ray Emission (MeSH), Xylem (growth & development), Zinc (metabolism).
- MESH :
- chemical , metabolism : Calcium, Potassium, Zinc.
- growth & development : Phloem, Plant Leaves, Populus, Xylem.
- metabolism : Plant Leaves, Populus.
- Carbohydrate Metabolism, Spectrometry, X-Ray Emission.
Abstract
We examined the spatiotemporal distribution and accumulation of calcium (Ca), potassium (K), and zinc (Zn) during the growth and maturation of grey poplar (Populus tremula × alba) leaves covering plastochrons 01 through 10. This period spans the sugar sink-to-source transition and requires coordinated changes of multiple core metabolic processes that likely involve alterations in essential and non-essential element distributions as tissues mature and effect a reversal in phloem flow direction. Whole-leaf elemental maps were obtained from dried specimens using micro X-ray fluorescence spectroscopy. Additional cross-sections of fresh leaves were scanned to check for tissue specificity in element accumulation. The anatomical distribution of Zn and K remains relatively consistent throughout leaf development; Ca accumulation varied across leaf developmental stages. The basipetal allocation of Ca to the leaf mesophyll matched spatially and temporally the sequence of phloem maturation, positive carbon balance, and sugar export from leaves. The accumulation of Ca likely reflects the maturation of xylem in minor veins and the enhancement of the transpiration stream. Our results independently confirm that xylem and phloem maturation are spatially and temporally coordinated with the onset of sugar export in leaves.
DOI: 10.1093/jxb/erw111
PubMed: 26985054
PubMed Central: PMC4861023
Affiliations:
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Niklas</name><affiliation wicri:level="4"><nlm:affiliation>School of Integrative Plant Sciences, Plant Biology Section, Cornell University, Ithaca, NY 14853, USA kjn2@cornell.edu.</nlm:affiliation><country wicri:rule="url">États-Unis</country><wicri:regionArea>School of Integrative Plant Sciences, Plant Biology Section, Cornell University, Ithaca, NY 14853</wicri:regionArea><placeName><region type="state">État de New York</region><settlement type="city">Ithaca (New York)</settlement></placeName><orgName type="university">Université Cornell</orgName></affiliation></author></analytic><series><title level="j">Journal of experimental botany</title><idno type="eISSN">1460-2431</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Calcium (metabolism)</term><term>Carbohydrate Metabolism (MeSH)</term><term>Phloem (growth & development)</term><term>Plant Leaves (growth & development)</term><term>Plant Leaves (metabolism)</term><term>Populus (growth & development)</term><term>Populus (metabolism)</term><term>Potassium (metabolism)</term><term>Spectrometry, X-Ray Emission (MeSH)</term><term>Xylem (growth & development)</term><term>Zinc (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Calcium (métabolisme)</term><term>Feuilles de plante (croissance et développement)</term><term>Feuilles de plante (métabolisme)</term><term>Métabolisme glucidique (MeSH)</term><term>Phloème (croissance et développement)</term><term>Populus (croissance et développement)</term><term>Populus (métabolisme)</term><term>Potassium (métabolisme)</term><term>Spectrométrie d'émission X (MeSH)</term><term>Xylème (croissance et développement)</term><term>Zinc (métabolisme)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Calcium</term><term>Potassium</term><term>Zinc</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Feuilles de plante</term><term>Phloème</term><term>Populus</term><term>Xylème</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Phloem</term><term>Plant Leaves</term><term>Populus</term><term>Xylem</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plant Leaves</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Calcium</term><term>Feuilles de plante</term><term>Populus</term><term>Potassium</term><term>Zinc</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Carbohydrate Metabolism</term><term>Spectrometry, X-Ray Emission</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Métabolisme glucidique</term><term>Spectrométrie d'émission X</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We examined the spatiotemporal distribution and accumulation of calcium (Ca), potassium (K), and zinc (Zn) during the growth and maturation of grey poplar (Populus tremula × alba) leaves covering plastochrons 01 through 10. This period spans the sugar sink-to-source transition and requires coordinated changes of multiple core metabolic processes that likely involve alterations in essential and non-essential element distributions as tissues mature and effect a reversal in phloem flow direction. Whole-leaf elemental maps were obtained from dried specimens using micro X-ray fluorescence spectroscopy. Additional cross-sections of fresh leaves were scanned to check for tissue specificity in element accumulation. The anatomical distribution of Zn and K remains relatively consistent throughout leaf development; Ca accumulation varied across leaf developmental stages. The basipetal allocation of Ca to the leaf mesophyll matched spatially and temporally the sequence of phloem maturation, positive carbon balance, and sugar export from leaves. The accumulation of Ca likely reflects the maturation of xylem in minor veins and the enhancement of the transpiration stream. Our results independently confirm that xylem and phloem maturation are spatially and temporally coordinated with the onset of sugar export in leaves.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">26985054</PMID><DateCompleted><Year>2017</Year><Month>11</Month><Day>16</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1460-2431</ISSN><JournalIssue CitedMedium="Internet"><Volume>67</Volume><Issue>9</Issue><PubDate><Year>2016</Year><Month>04</Month></PubDate></JournalIssue><Title>Journal of experimental botany</Title><ISOAbbreviation>J Exp Bot</ISOAbbreviation></Journal><ArticleTitle>Spatiotemporal distribution of essential elements through Populus leaf ontogeny.</ArticleTitle><Pagination><MedlinePgn>2777-86</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/jxb/erw111</ELocationID><Abstract><AbstractText>We examined the spatiotemporal distribution and accumulation of calcium (Ca), potassium (K), and zinc (Zn) during the growth and maturation of grey poplar (Populus tremula × alba) leaves covering plastochrons 01 through 10. This period spans the sugar sink-to-source transition and requires coordinated changes of multiple core metabolic processes that likely involve alterations in essential and non-essential element distributions as tissues mature and effect a reversal in phloem flow direction. Whole-leaf elemental maps were obtained from dried specimens using micro X-ray fluorescence spectroscopy. Additional cross-sections of fresh leaves were scanned to check for tissue specificity in element accumulation. The anatomical distribution of Zn and K remains relatively consistent throughout leaf development; Ca accumulation varied across leaf developmental stages. The basipetal allocation of Ca to the leaf mesophyll matched spatially and temporally the sequence of phloem maturation, positive carbon balance, and sugar export from leaves. The accumulation of Ca likely reflects the maturation of xylem in minor veins and the enhancement of the transpiration stream. Our results independently confirm that xylem and phloem maturation are spatially and temporally coordinated with the onset of sugar export in leaves.</AbstractText><CopyrightInformation>© The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Carvalho</LastName><ForeName>Mónica R</ForeName><Initials>MR</Initials><AffiliationInfo><Affiliation>School of Integrative Plant Sciences, Plant Biology Section, Cornell University, Ithaca, NY 14853, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Woll</LastName><ForeName>Arthur</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14853, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Niklas</LastName><ForeName>Karl J</ForeName><Initials>KJ</Initials><AffiliationInfo><Affiliation>School of Integrative Plant Sciences, Plant Biology Section, Cornell University, Ithaca, NY 14853, USA kjn2@cornell.edu.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><GrantList CompleteYN="Y"><Grant><GrantID>P41 GM103485</GrantID><Acronym>GM</Acronym><Agency>NIGMS NIH HHS</Agency><Country>United States</Country></Grant></GrantList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D052061">Research Support, N.I.H., Extramural</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2016</Year><Month>03</Month><Day>16</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Exp Bot</MedlineTA><NlmUniqueID>9882906</NlmUniqueID><ISSNLinking>0022-0957</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>J41CSQ7QDS</RegistryNumber><NameOfSubstance UI="D015032">Zinc</NameOfSubstance></Chemical><Chemical><RegistryNumber>RWP5GA015D</RegistryNumber><NameOfSubstance UI="D011188">Potassium</NameOfSubstance></Chemical><Chemical><RegistryNumber>SY7Q814VUP</RegistryNumber><NameOfSubstance UI="D002118">Calcium</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002118" MajorTopicYN="N">Calcium</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D050260" MajorTopicYN="N">Carbohydrate Metabolism</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D052585" MajorTopicYN="N">Phloem</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011188" MajorTopicYN="N">Potassium</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013052" MajorTopicYN="N">Spectrometry, X-Ray Emission</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D052584" MajorTopicYN="N">Xylem</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D015032" MajorTopicYN="N">Zinc</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">Calcium</Keyword><Keyword MajorTopicYN="Y">Populus</Keyword><Keyword MajorTopicYN="Y">X-ray fluorescence spectroscopy.</Keyword><Keyword MajorTopicYN="Y">essential elements</Keyword><Keyword MajorTopicYN="Y">leaf development</Keyword><Keyword MajorTopicYN="Y">leaf maturation</Keyword><Keyword MajorTopicYN="Y">phloem loading</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2016</Year><Month>3</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2016</Year><Month>3</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>11</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">26985054</ArticleId><ArticleId IdType="pii">erw111</ArticleId><ArticleId 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Carvalho</name></region><name sortKey="Niklas, Karl J" sort="Niklas, Karl J" uniqKey="Niklas K" first="Karl J" last="Niklas">Karl J. Niklas</name><name sortKey="Woll, Arthur" sort="Woll, Arthur" uniqKey="Woll A" first="Arthur" last="Woll">Arthur Woll</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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