Sensing embolism in xylem vessels: the role of sucrose as a trigger for refilling.
Identifieur interne : 002D16 ( Main/Exploration ); précédent : 002D15; suivant : 002D17Sensing embolism in xylem vessels: the role of sucrose as a trigger for refilling.
Auteurs : Francesca Secchi [États-Unis] ; Maciej A. ZwienieckiSource :
- Plant, cell & environment [ 1365-3040 ] ; 2011.
Descripteurs français
- KwdFr :
- ARN des plantes (génétique), Amidon (analyse), Analyse de profil d'expression de gènes (MeSH), Aquaporines (génétique), Eau (physiologie), Populus (génétique), Populus (physiologie), Pression osmotique (MeSH), Régulation de l'expression des gènes végétaux (MeSH), Saccharose (métabolisme), Stress physiologique (MeSH), Tiges de plante (physiologie), Xylème (composition chimique), Xylème (physiologie).
- MESH :
- analyse : Amidon.
- composition chimique : Xylème.
- génétique : ARN des plantes, Aquaporines, Populus.
- métabolisme : Saccharose.
- physiologie : Eau, Populus, Tiges de plante, Xylème.
- Analyse de profil d'expression de gènes, Pression osmotique, Régulation de l'expression des gènes végétaux, Stress physiologique.
English descriptors
- KwdEn :
- Aquaporins (genetics), Gene Expression Profiling (MeSH), Gene Expression Regulation, Plant (MeSH), Osmotic Pressure (MeSH), Plant Stems (physiology), Populus (genetics), Populus (physiology), RNA, Plant (genetics), Starch (analysis), Stress, Physiological (MeSH), Sucrose (metabolism), Water (physiology), Xylem (chemistry), Xylem (physiology).
- MESH :
- chemical , analysis : Starch.
- chemical , genetics : Aquaporins, RNA, Plant.
- chemistry : Xylem.
- genetics : Populus.
- chemical , metabolism : Sucrose.
- physiology : Plant Stems, Populus, Water, Xylem.
- Gene Expression Profiling, Gene Expression Regulation, Plant, Osmotic Pressure, Stress, Physiological.
Abstract
Refilling of embolized vessels requires a source of water and the release of energy stored in xylem parenchyma cells. Past evidence suggests that embolism presence can trigger a biological response that is switched off upon successful vessel refilling. As embolism formation is a purely physical process and most biological triggers rely on chemical sensors, we hypothesized that accumulation of osmotic compounds in walls of embolized vessels are involved in the embolism sensing mechanism. Analysis of Populus trichocarpa's response to infiltration of sucrose, monosaccharides, polyethylene glycol and potassium chloride into the xylem revealed that only presence of sucrose resulted in a simultaneous physiological and molecular response similar to that induced by embolism. This response included reduction of the starch pool in xylem parenchyma cells and significant correlation of gene expression from aquaporins, amylases and sugar transporter families. The work provides evidence of the ability of plants to sense embolism and suggests that sucrose concentration is the stimulus that allows plants to trigger a biological response to embolism.
DOI: 10.1111/j.1365-3040.2010.02259.x
PubMed: 21118423
Affiliations:
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Le document en format XML
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Past evidence suggests that embolism presence can trigger a biological response that is switched off upon successful vessel refilling. As embolism formation is a purely physical process and most biological triggers rely on chemical sensors, we hypothesized that accumulation of osmotic compounds in walls of embolized vessels are involved in the embolism sensing mechanism. Analysis of Populus trichocarpa's response to infiltration of sucrose, monosaccharides, polyethylene glycol and potassium chloride into the xylem revealed that only presence of sucrose resulted in a simultaneous physiological and molecular response similar to that induced by embolism. This response included reduction of the starch pool in xylem parenchyma cells and significant correlation of gene expression from aquaporins, amylases and sugar transporter families. The work provides evidence of the ability of plants to sense embolism and suggests that sucrose concentration is the stimulus that allows plants to trigger a biological response to embolism.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21118423</PMID><DateCompleted><Year>2011</Year><Month>05</Month><Day>23</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-3040</ISSN><JournalIssue CitedMedium="Internet"><Volume>34</Volume><Issue>3</Issue><PubDate><Year>2011</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Plant, cell & environment</Title><ISOAbbreviation>Plant Cell Environ</ISOAbbreviation></Journal><ArticleTitle>Sensing embolism in xylem vessels: the role of sucrose as a trigger for refilling.</ArticleTitle><Pagination><MedlinePgn>514-24</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/j.1365-3040.2010.02259.x</ELocationID><Abstract><AbstractText>Refilling of embolized vessels requires a source of water and the release of energy stored in xylem parenchyma cells. Past evidence suggests that embolism presence can trigger a biological response that is switched off upon successful vessel refilling. As embolism formation is a purely physical process and most biological triggers rely on chemical sensors, we hypothesized that accumulation of osmotic compounds in walls of embolized vessels are involved in the embolism sensing mechanism. Analysis of Populus trichocarpa's response to infiltration of sucrose, monosaccharides, polyethylene glycol and potassium chloride into the xylem revealed that only presence of sucrose resulted in a simultaneous physiological and molecular response similar to that induced by embolism. This response included reduction of the starch pool in xylem parenchyma cells and significant correlation of gene expression from aquaporins, amylases and sugar transporter families. The work provides evidence of the ability of plants to sense embolism and suggests that sucrose concentration is the stimulus that allows plants to trigger a biological response to embolism.</AbstractText><CopyrightInformation>© 2011 Blackwell Publishing Ltd.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Secchi</LastName><ForeName>Francesca</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>Arnold Arboretum of Harvard University, BioLabs 3114, 16 Dinivity Ave, Cambridge, MA 02138, USA. fsecchi@oeb.harvard.edu</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zwieniecki</LastName><ForeName>Maciej A</ForeName><Initials>MA</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2011</Year><Month>01</Month><Day>14</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Cell Environ</MedlineTA><NlmUniqueID>9309004</NlmUniqueID><ISSNLinking>0140-7791</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D020346">Aquaporins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D018749">RNA, Plant</NameOfSubstance></Chemical><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance UI="D014867">Water</NameOfSubstance></Chemical><Chemical><RegistryNumber>57-50-1</RegistryNumber><NameOfSubstance UI="D013395">Sucrose</NameOfSubstance></Chemical><Chemical><RegistryNumber>9005-25-8</RegistryNumber><NameOfSubstance UI="D013213">Starch</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D020346" MajorTopicYN="N">Aquaporins</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D020869" MajorTopicYN="N">Gene Expression Profiling</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018506" MajorTopicYN="N">Gene Expression Regulation, Plant</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D009997" MajorTopicYN="N">Osmotic Pressure</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018547" MajorTopicYN="N">Plant Stems</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018749" MajorTopicYN="N">RNA, Plant</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013213" MajorTopicYN="N">Starch</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="N">analysis</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013312" MajorTopicYN="N">Stress, Physiological</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013395" MajorTopicYN="N">Sucrose</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014867" MajorTopicYN="N">Water</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D052584" MajorTopicYN="N">Xylem</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2010</Year><Month>12</Month><Day>2</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2010</Year><Month>12</Month><Day>2</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>5</Month><Day>24</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">21118423</ArticleId><ArticleId IdType="doi">10.1111/j.1365-3040.2010.02259.x</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Massachusetts</li></region></list><tree><noCountry><name sortKey="Zwieniecki, Maciej A" sort="Zwieniecki, Maciej A" uniqKey="Zwieniecki M" first="Maciej A" last="Zwieniecki">Maciej A. Zwieniecki</name></noCountry><country name="États-Unis"><region name="Massachusetts"><name sortKey="Secchi, Francesca" sort="Secchi, Francesca" uniqKey="Secchi F" first="Francesca" last="Secchi">Francesca Secchi</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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