Changes in abscisic acid content during and after drought are related to carbohydrate mobilization and hydraulic recovery in poplar stems.
Identifieur interne : 000523 ( Main/Exploration ); précédent : 000522; suivant : 000524Changes in abscisic acid content during and after drought are related to carbohydrate mobilization and hydraulic recovery in poplar stems.
Auteurs : Cecilia Brunetti [Italie] ; Tadeja Savi ; Andrea Nardini [Italie] ; Francesco Loreto [Italie] ; Antonella Gori [Italie] ; Mauro Centritto [Italie]Source :
- Tree physiology [ 1758-4469 ] ; 2020.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical : Abscisic Acid, Carbohydrates, Water.
- Droughts, Plant Leaves, Plant Stomata, Plant Transpiration, Populus, Xylem.
Abstract
Drought compromises plant's ability to replace transpired water vapor with water absorbed from the soil, leading to extensive xylem dysfunction and causing plant desiccation and death. Short-term plant responses to drought rely on stomatal closure, and on the plant's ability to recover hydraulic functioning after drought relief. We hypothesize a key role for abscisic acid (ABA) not only in the control of stomatal aperture, but also in hydraulic recovery. Young plants of Populus nigra L. were used to investigate possible relationships among ABA, non-structural carbohydrates (NSC) and xylem hydraulic function under drought and after re-watering. In Populus nigra L. plants subjected to drought, water transport efficiency and hydraulic recovery after re-watering were monitored by measuring the percentage loss of hydraulic conductivity (PLC) and stem specific hydraulic conductivity (Kstem). In the same plants ABA and NSC were quantified in wood and bark. Drought severely reduced stomatal conductance (gL) and markedly increased the PLC. Leaf and stem water potential, and stem hydraulic efficiency fully recovered within 24 h after re-watering, but gL values remained low. After re-watering, we found significant correlations between changes in ABA content and hexoses concentration both in wood and bark. Our findings suggest a role for ABA in the regulation of stem carbohydrate metabolism and starch mobilization upon drought relief, possibly promoting the restoration of xylem transport capacity.
DOI: 10.1093/treephys/tpaa032
PubMed: 32186735
Affiliations:
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Giorgieri 10, 34127 Trieste, Italy.</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Scienze della Vita, Università di Trieste, Via L. Giorgieri 10, 34127 Trieste</wicri:regionArea><wicri:noRegion>34127 Trieste</wicri:noRegion></affiliation></author><author><name sortKey="Loreto, Francesco" sort="Loreto, Francesco" uniqKey="Loreto F" first="Francesco" last="Loreto">Francesco Loreto</name><affiliation wicri:level="1"><nlm:affiliation>National Research Council of Italy, Department of Biology, Agriculture and Food Sciences, Piazzale Aldo Moro 7, 00185 Roma, Italy.</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>National Research Council of Italy, Department of Biology, Agriculture and Food Sciences, Piazzale Aldo Moro 7, 00185 Roma</wicri:regionArea><placeName><settlement type="city">Rome</settlement><region nuts="2">Latium</region></placeName></affiliation></author><author><name sortKey="Gori, Antonella" sort="Gori, Antonella" uniqKey="Gori A" first="Antonella" last="Gori">Antonella Gori</name><affiliation wicri:level="1"><nlm:affiliation>Department of Agri-Food Production and Environmental Sciences, University of Florence, Viale delle Idee 30, 50019 Sesto Fiorentino (Florence), Italy.</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>Department of Agri-Food Production and Environmental Sciences, University of Florence, Viale delle Idee 30, 50019 Sesto Fiorentino (Florence)</wicri:regionArea><wicri:noRegion>50019 Sesto Fiorentino (Florence)</wicri:noRegion></affiliation></author><author><name sortKey="Centritto, Mauro" sort="Centritto, Mauro" uniqKey="Centritto M" first="Mauro" last="Centritto">Mauro Centritto</name><affiliation wicri:level="1"><nlm:affiliation>National Research Council of Italy, Institute for Sustainable Plant Protection, Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy.</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>National Research Council of Italy, Institute for Sustainable Plant Protection, Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence)</wicri:regionArea><wicri:noRegion>50019 Sesto Fiorentino (Florence)</wicri:noRegion></affiliation></author></analytic><series><title level="j">Tree physiology</title><idno type="eISSN">1758-4469</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Abscisic Acid (MeSH)</term><term>Carbohydrates (MeSH)</term><term>Droughts (MeSH)</term><term>Plant Leaves (MeSH)</term><term>Plant Stomata (MeSH)</term><term>Plant Transpiration (MeSH)</term><term>Populus (MeSH)</term><term>Water (MeSH)</term><term>Xylem (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acide abscissique (MeSH)</term><term>Eau (MeSH)</term><term>Feuilles de plante (MeSH)</term><term>Glucides (MeSH)</term><term>Populus (MeSH)</term><term>Stomates de plante (MeSH)</term><term>Sécheresses (MeSH)</term><term>Transpiration des plantes (MeSH)</term><term>Xylème (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Abscisic Acid</term><term>Carbohydrates</term><term>Water</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Droughts</term><term>Plant Leaves</term><term>Plant Stomata</term><term>Plant Transpiration</term><term>Populus</term><term>Xylem</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Acide abscissique</term><term>Eau</term><term>Feuilles de plante</term><term>Glucides</term><term>Populus</term><term>Stomates de plante</term><term>Sécheresses</term><term>Transpiration des plantes</term><term>Xylème</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Drought compromises plant's ability to replace transpired water vapor with water absorbed from the soil, leading to extensive xylem dysfunction and causing plant desiccation and death. Short-term plant responses to drought rely on stomatal closure, and on the plant's ability to recover hydraulic functioning after drought relief. We hypothesize a key role for abscisic acid (ABA) not only in the control of stomatal aperture, but also in hydraulic recovery. Young plants of Populus nigra L. were used to investigate possible relationships among ABA, non-structural carbohydrates (NSC) and xylem hydraulic function under drought and after re-watering. In Populus nigra L. plants subjected to drought, water transport efficiency and hydraulic recovery after re-watering were monitored by measuring the percentage loss of hydraulic conductivity (PLC) and stem specific hydraulic conductivity (Kstem). In the same plants ABA and NSC were quantified in wood and bark. Drought severely reduced stomatal conductance (gL) and markedly increased the PLC. Leaf and stem water potential, and stem hydraulic efficiency fully recovered within 24 h after re-watering, but gL values remained low. After re-watering, we found significant correlations between changes in ABA content and hexoses concentration both in wood and bark. Our findings suggest a role for ABA in the regulation of stem carbohydrate metabolism and starch mobilization upon drought relief, possibly promoting the restoration of xylem transport capacity.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Automated" Owner="NLM"><PMID Version="1">32186735</PMID><DateCompleted><Year>2020</Year><Month>10</Month><Day>01</Day></DateCompleted><DateRevised><Year>2020</Year><Month>10</Month><Day>01</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN><JournalIssue CitedMedium="Internet"><Volume>40</Volume><Issue>8</Issue><PubDate><Year>2020</Year><Month>07</Month><Day>30</Day></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Changes in abscisic acid content during and after drought are related to carbohydrate mobilization and hydraulic recovery in poplar stems.</ArticleTitle><Pagination><MedlinePgn>1043-1057</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/treephys/tpaa032</ELocationID><Abstract><AbstractText>Drought compromises plant's ability to replace transpired water vapor with water absorbed from the soil, leading to extensive xylem dysfunction and causing plant desiccation and death. Short-term plant responses to drought rely on stomatal closure, and on the plant's ability to recover hydraulic functioning after drought relief. We hypothesize a key role for abscisic acid (ABA) not only in the control of stomatal aperture, but also in hydraulic recovery. Young plants of Populus nigra L. were used to investigate possible relationships among ABA, non-structural carbohydrates (NSC) and xylem hydraulic function under drought and after re-watering. In Populus nigra L. plants subjected to drought, water transport efficiency and hydraulic recovery after re-watering were monitored by measuring the percentage loss of hydraulic conductivity (PLC) and stem specific hydraulic conductivity (Kstem). In the same plants ABA and NSC were quantified in wood and bark. Drought severely reduced stomatal conductance (gL) and markedly increased the PLC. Leaf and stem water potential, and stem hydraulic efficiency fully recovered within 24 h after re-watering, but gL values remained low. After re-watering, we found significant correlations between changes in ABA content and hexoses concentration both in wood and bark. Our findings suggest a role for ABA in the regulation of stem carbohydrate metabolism and starch mobilization upon drought relief, possibly promoting the restoration of xylem transport capacity.</AbstractText><CopyrightInformation>© The Author(s) 2020. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permission@oup.com.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Brunetti</LastName><ForeName>Cecilia</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>National Research Council of Italy, Institute for Sustainable Plant Protection, Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Savi</LastName><ForeName>Tadeja</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>University of Natural Resources and Life Sciences, Institute of Botany, Department of Integrative Biology and Biodiversity Research, BOKU, Gregor-Mendel-Straße 33, 1190, Vienna, Austria Austria.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Nardini</LastName><ForeName>Andrea</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Dipartimento di Scienze della Vita, Università di Trieste, Via L. Giorgieri 10, 34127 Trieste, Italy.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Loreto</LastName><ForeName>Francesco</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>National Research Council of Italy, Department of Biology, Agriculture and Food Sciences, Piazzale Aldo Moro 7, 00185 Roma, Italy.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gori</LastName><ForeName>Antonella</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Department of Agri-Food Production and Environmental Sciences, University of Florence, Viale delle Idee 30, 50019 Sesto Fiorentino (Florence), Italy.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Centritto</LastName><ForeName>Mauro</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>National Research Council of Italy, Institute for Sustainable Plant Protection, Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy.</Affiliation></AffiliationInfo></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>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D002241">Carbohydrates</NameOfSubstance></Chemical><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance UI="D014867">Water</NameOfSubstance></Chemical><Chemical><RegistryNumber>72S9A8J5GW</RegistryNumber><NameOfSubstance UI="D000040">Abscisic Acid</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000040" MajorTopicYN="N">Abscisic Acid</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002241" MajorTopicYN="N">Carbohydrates</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D055864" MajorTopicYN="Y">Droughts</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D054046" MajorTopicYN="N">Plant Stomata</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018526" MajorTopicYN="N">Plant Transpiration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="Y">Populus</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014867" MajorTopicYN="N">Water</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D052584" MajorTopicYN="N">Xylem</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">Populus nigra
</Keyword><Keyword MajorTopicYN="Y">abscisic acid</Keyword><Keyword MajorTopicYN="Y">carbohydrates</Keyword><Keyword MajorTopicYN="Y">percent loss of hydraulic conductivity (PLC)</Keyword><Keyword MajorTopicYN="Y">starch</Keyword><Keyword MajorTopicYN="Y">xylem hydraulic</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2019</Year><Month>06</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2020</Year><Month>02</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2020</Year><Month>03</Month><Day>13</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>3</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>10</Month><Day>2</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>3</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">32186735</ArticleId><ArticleId IdType="pii">5809514</ArticleId><ArticleId IdType="doi">10.1093/treephys/tpaa032</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Italie</li></country><region><li>Latium</li></region><settlement><li>Rome</li></settlement></list><tree><noCountry><name sortKey="Savi, Tadeja" sort="Savi, Tadeja" uniqKey="Savi T" first="Tadeja" last="Savi">Tadeja Savi</name></noCountry><country name="Italie"><noRegion><name sortKey="Brunetti, Cecilia" sort="Brunetti, Cecilia" uniqKey="Brunetti C" first="Cecilia" last="Brunetti">Cecilia Brunetti</name></noRegion><name sortKey="Centritto, Mauro" sort="Centritto, Mauro" uniqKey="Centritto M" first="Mauro" last="Centritto">Mauro Centritto</name><name sortKey="Gori, Antonella" sort="Gori, Antonella" uniqKey="Gori A" first="Antonella" last="Gori">Antonella Gori</name><name sortKey="Loreto, Francesco" sort="Loreto, Francesco" uniqKey="Loreto F" first="Francesco" last="Loreto">Francesco Loreto</name><name sortKey="Nardini, Andrea" sort="Nardini, Andrea" uniqKey="Nardini A" first="Andrea" last="Nardini">Andrea Nardini</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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