Circadian patterns of xylem sap properties and their covariation with plant hydraulic traits in hybrid aspen.
Identifieur interne : 001477 ( Main/Exploration ); précédent : 001476; suivant : 001478Circadian patterns of xylem sap properties and their covariation with plant hydraulic traits in hybrid aspen.
Auteurs : Annika Meitern [Estonie] ; Eele Unapuu-Pikas [Estonie] ; Arne Sellin [Estonie]Source :
- Journal of plant physiology [ 1618-1328 ] ; 2017.
Descripteurs français
- KwdFr :
- Concentration en ions d'hydrogène (MeSH), Concentration osmolaire (MeSH), Populus (métabolisme), Populus (physiologie), Potassium (métabolisme), Rythme circadien (génétique), Rythme circadien (physiologie), Transpiration des plantes (génétique), Transpiration des plantes (physiologie), Xylème (métabolisme), Xylème (physiologie).
- MESH :
- génétique : Rythme circadien, Transpiration des plantes.
- métabolisme : Populus, Potassium, Xylème.
- physiologie : Populus, Rythme circadien, Transpiration des plantes, Xylème.
- Concentration en ions d'hydrogène, Concentration osmolaire.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Potassium.
- genetics : Circadian Rhythm, Plant Transpiration.
- metabolism : Populus, Xylem.
- physiology : Circadian Rhythm, Plant Transpiration, Populus, Xylem.
- Hydrogen-Ion Concentration, Osmolar Concentration.
Abstract
Physiological processes taking place in plants are subject to diverse circadian patterns but some of them are poorly documented in natural conditions. The daily dynamics of physico-chemical properties of xylem sap and their covariation with tree hydraulic traits were investigated in hybrid aspen (Populus tremula L.×P. tremuloides Michx) in field conditions in order to clarify which environmental drivers govern the daily variation in these parameters. K+ concentration ([K+]), electrical conductivity (σsap), osmolality (Osm) and pH of the xylem sap, as well as branch hydraulic traits, were measured in the field over 24-h cycles. All studied xylem sap properties and hydraulic characteristics including whole-branch (Kwb), leaf blade (Klb) and petiole hydraulic conductances (KP) showed clear daily dynamics. Air temperature (TA) and photosynthetic photon flux density (PPFD), but also water vapour pressure deficit (VPD) and relative humidity (RH), had significant impacts on KwbKlb, KP, [K+] and σsap. Osm varied only with light intensity, while KB varied depending on atmospheric evaporative demand expressed as TA, VPD or RH. Xylem sap pH depended inversely on soil water potential (ΨS) and during daylight also on VPD. Although soil water content was close to saturation during the study period, ΨS influenced also [K+] and σsap. The present study presents evidence of coupling between circadian patterns of xylem sap properties and plant hydraulic conductance providing adequate water supply to foliage under environmental conditions characterised by diurnal variation.
DOI: 10.1016/j.jplph.2017.03.012
PubMed: 28384532
Affiliations:
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The daily dynamics of physico-chemical properties of xylem sap and their covariation with tree hydraulic traits were investigated in hybrid aspen (Populus tremula L.×P. tremuloides Michx) in field conditions in order to clarify which environmental drivers govern the daily variation in these parameters. K<sup>+</sup> concentration ([K<sup>+</sup>]), electrical conductivity (σ<sub>sap</sub>), osmolality (Osm) and pH of the xylem sap, as well as branch hydraulic traits, were measured in the field over 24-h cycles. All studied xylem sap properties and hydraulic characteristics including whole-branch (K<sub>wb</sub>), leaf blade (K<sub>lb</sub>) and petiole hydraulic conductances (K<sub>P</sub>) showed clear daily dynamics. Air temperature (T<sub>A</sub>) and photosynthetic photon flux density (PPFD), but also water vapour pressure deficit (VPD) and relative humidity (RH), had significant impacts on K<sub>wb</sub>K<sub>lb</sub>, K<sub>P</sub>, [K<sup>+</sup>] and σ<sub>sap</sub>. Osm varied only with light intensity, while K<sub>B</sub> varied depending on atmospheric evaporative demand expressed as T<sub>A</sub>, VPD or RH. Xylem sap pH depended inversely on soil water potential (Ψ<sub>S</sub>) and during daylight also on VPD. Although soil water content was close to saturation during the study period, Ψ<sub>S</sub> influenced also [K<sup>+</sup>] and σ<sub>sap</sub>. The present study presents evidence of coupling between circadian patterns of xylem sap properties and plant hydraulic conductance providing adequate water supply to foliage under environmental conditions characterised by diurnal variation.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">28384532</PMID><DateCompleted><Year>2017</Year><Month>11</Month><Day>27</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1618-1328</ISSN><JournalIssue CitedMedium="Internet"><Volume>213</Volume><PubDate><Year>2017</Year><Month>Jun</Month></PubDate></JournalIssue><Title>Journal of plant physiology</Title><ISOAbbreviation>J Plant Physiol</ISOAbbreviation></Journal><ArticleTitle>Circadian patterns of xylem sap properties and their covariation with plant hydraulic traits in hybrid aspen.</ArticleTitle><Pagination><MedlinePgn>148-156</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0176-1617(17)30077-9</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.jplph.2017.03.012</ELocationID><Abstract><AbstractText>Physiological processes taking place in plants are subject to diverse circadian patterns but some of them are poorly documented in natural conditions. The daily dynamics of physico-chemical properties of xylem sap and their covariation with tree hydraulic traits were investigated in hybrid aspen (Populus tremula L.×P. tremuloides Michx) in field conditions in order to clarify which environmental drivers govern the daily variation in these parameters. K<sup>+</sup> concentration ([K<sup>+</sup>]), electrical conductivity (σ<sub>sap</sub>), osmolality (Osm) and pH of the xylem sap, as well as branch hydraulic traits, were measured in the field over 24-h cycles. All studied xylem sap properties and hydraulic characteristics including whole-branch (K<sub>wb</sub>), leaf blade (K<sub>lb</sub>) and petiole hydraulic conductances (K<sub>P</sub>) showed clear daily dynamics. Air temperature (T<sub>A</sub>) and photosynthetic photon flux density (PPFD), but also water vapour pressure deficit (VPD) and relative humidity (RH), had significant impacts on K<sub>wb</sub>K<sub>lb</sub>, K<sub>P</sub>, [K<sup>+</sup>] and σ<sub>sap</sub>. Osm varied only with light intensity, while K<sub>B</sub> varied depending on atmospheric evaporative demand expressed as T<sub>A</sub>, VPD or RH. Xylem sap pH depended inversely on soil water potential (Ψ<sub>S</sub>) and during daylight also on VPD. Although soil water content was close to saturation during the study period, Ψ<sub>S</sub> influenced also [K<sup>+</sup>] and σ<sub>sap</sub>. The present study presents evidence of coupling between circadian patterns of xylem sap properties and plant hydraulic conductance providing adequate water supply to foliage under environmental conditions characterised by diurnal variation.</AbstractText><CopyrightInformation>Copyright © 2017 Elsevier GmbH. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Meitern</LastName><ForeName>Annika</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Institute of Ecology and Earth Sciences, University of Tartu, Lai 40, 51005 Tartu, Estonia. Electronic address: annika.meitern@ut.ee.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Õunapuu-Pikas</LastName><ForeName>Eele</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Institute of Ecology and Earth Sciences, University of Tartu, Lai 40, 51005 Tartu, Estonia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sellin</LastName><ForeName>Arne</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Institute of Ecology and Earth Sciences, University of Tartu, Lai 40, 51005 Tartu, Estonia.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>03</Month><Day>22</Day></ArticleDate></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>J Plant Physiol</MedlineTA><NlmUniqueID>9882059</NlmUniqueID><ISSNLinking>0176-1617</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>RWP5GA015D</RegistryNumber><NameOfSubstance UI="D011188">Potassium</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002940" MajorTopicYN="N">Circadian Rhythm</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006863" MajorTopicYN="N">Hydrogen-Ion Concentration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D009994" MajorTopicYN="N">Osmolar Concentration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018526" MajorTopicYN="N">Plant Transpiration</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011188" MajorTopicYN="N">Potassium</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D052584" MajorTopicYN="N">Xylem</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Atmospheric evaporative demand</Keyword><Keyword MajorTopicYN="N">Circadian patterns</Keyword><Keyword MajorTopicYN="N">Hydraulic conductance</Keyword><Keyword MajorTopicYN="N">Osmolality</Keyword><Keyword MajorTopicYN="N">Potassium ions</Keyword><Keyword MajorTopicYN="N">pH</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2017</Year><Month>01</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2017</Year><Month>02</Month><Day>21</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2017</Year><Month>03</Month><Day>21</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>4</Month><Day>7</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><PubMedPubDate PubStatus="entrez"><Year>2017</Year><Month>4</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">28384532</ArticleId><ArticleId IdType="pii">S0176-1617(17)30077-9</ArticleId><ArticleId IdType="doi">10.1016/j.jplph.2017.03.012</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Estonie</li></country></list><tree><country name="Estonie"><noRegion><name sortKey="Meitern, Annika" sort="Meitern, Annika" uniqKey="Meitern A" first="Annika" last="Meitern">Annika Meitern</name></noRegion><name sortKey=" Unapuu Pikas, Eele" sort=" Unapuu Pikas, Eele" uniqKey=" Unapuu Pikas E" first="Eele" last=" Unapuu-Pikas">Eele Unapuu-Pikas</name><name sortKey="Sellin, Arne" sort="Sellin, Arne" uniqKey="Sellin A" first="Arne" last="Sellin">Arne Sellin</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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