Contrasting patterns of cytokinins between years in senescing aspen leaves.
Identifieur interne : 001457 ( Main/Exploration ); précédent : 001456; suivant : 001458Contrasting patterns of cytokinins between years in senescing aspen leaves.
Auteurs : Erik Edlund [Suède] ; Ondrej Novak [République tchèque, Suède] ; Michal Karady [Suède] ; Karin Ljung [Suède] ; Stefan Jansson [Suède]Source :
- Plant, cell & environment [ 1365-3040 ] ; 2017.
Descripteurs français
- KwdFr :
- Analyse de profil d'expression de gènes (MeSH), Chlorophylle (métabolisme), Cytokinine (métabolisme), Feuilles de plante (métabolisme), Feuilles de plante (physiologie), Glucosides (métabolisme), Gènes de plante (MeSH), Populus (génétique), Populus (métabolisme), Populus (physiologie), Régulation de l'expression des gènes végétaux (MeSH), Régulation négative (génétique), Saisons (MeSH), Temps (météorologie) (MeSH), Voies de biosynthèse (génétique).
- MESH :
- génétique : Populus, Régulation négative, Voies de biosynthèse.
- métabolisme : Chlorophylle, Cytokinine, Feuilles de plante, Glucosides, Populus.
- physiologie : Feuilles de plante, Populus.
- Analyse de profil d'expression de gènes, Gènes de plante, Régulation de l'expression des gènes végétaux, Saisons, Temps (météorologie).
English descriptors
- KwdEn :
- Biosynthetic Pathways (genetics), Chlorophyll (metabolism), Cytokinins (metabolism), Down-Regulation (genetics), Gene Expression Profiling (MeSH), Gene Expression Regulation, Plant (MeSH), Genes, Plant (MeSH), Glucosides (metabolism), Plant Leaves (metabolism), Plant Leaves (physiology), Populus (genetics), Populus (metabolism), Populus (physiology), Seasons (MeSH), Weather (MeSH).
- MESH :
- chemical , metabolism : Chlorophyll, Cytokinins, Glucosides.
- genetics : Biosynthetic Pathways, Down-Regulation, Populus.
- metabolism : Plant Leaves, Populus.
- physiology : Plant Leaves, Populus.
- Gene Expression Profiling, Gene Expression Regulation, Plant, Genes, Plant, Seasons, Weather.
Abstract
Cytokinins are plant hormones that typically block or delay leaf senescence. We profiled 34 different cytokinins/cytokinin metabolites (including precursors, conjugates and degradation products) in leaves of a free-growing mature aspen (Populus tremula) before and after the initiation of autumnal senescence over three consecutive years. The levels and profiles of individual cytokinin species, or classes/groups, varied greatly between years, despite the fact that the onset of autumn senescence was at the same time each year, and senescence was not associated with depletion of either active or total cytokinin levels. Levels of aromatic cytokinins (topolins) were low and changed little over the autumn period. Diurnal variations and weather-dependent variations in cytokinin content were relatively limited. We also followed the expression patterns of all aspen genes implicated as having roles in cytokinin metabolism or signalling, but neither the pattern of regulation of any group of genes nor the expression of any particular gene supported the notion that decreased cytokinin signalling could explain the onset of senescence. Based on the results from this tree, we therefore suggest that cytokinin depletion is unlikely to explain the onset of autumn leaf senescence in aspen.
DOI: 10.1111/pce.12899
PubMed: 28042677
Affiliations:
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Leaves</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Chlorophylle</term><term>Cytokinine</term><term>Feuilles de plante</term><term>Glucosides</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Feuilles de plante</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Leaves</term><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Gene Expression Profiling</term><term>Gene Expression Regulation, Plant</term><term>Genes, Plant</term><term>Seasons</term><term>Weather</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Analyse de profil d'expression de gènes</term><term>Gènes de plante</term><term>Régulation de l'expression des gènes végétaux</term><term>Saisons</term><term>Temps (météorologie)</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cytokinins are plant hormones that typically block or delay leaf senescence. We profiled 34 different cytokinins/cytokinin metabolites (including precursors, conjugates and degradation products) in leaves of a free-growing mature aspen (Populus tremula) before and after the initiation of autumnal senescence over three consecutive years. The levels and profiles of individual cytokinin species, or classes/groups, varied greatly between years, despite the fact that the onset of autumn senescence was at the same time each year, and senescence was not associated with depletion of either active or total cytokinin levels. Levels of aromatic cytokinins (topolins) were low and changed little over the autumn period. Diurnal variations and weather-dependent variations in cytokinin content were relatively limited. We also followed the expression patterns of all aspen genes implicated as having roles in cytokinin metabolism or signalling, but neither the pattern of regulation of any group of genes nor the expression of any particular gene supported the notion that decreased cytokinin signalling could explain the onset of senescence. Based on the results from this tree, we therefore suggest that cytokinin depletion is unlikely to explain the onset of autumn leaf senescence in aspen.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">28042677</PMID><DateCompleted><Year>2017</Year><Month>12</Month><Day>12</Day></DateCompleted><DateRevised><Year>2017</Year><Month>12</Month><Day>12</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-3040</ISSN><JournalIssue CitedMedium="Internet"><Volume>40</Volume><Issue>5</Issue><PubDate><Year>2017</Year><Month>May</Month></PubDate></JournalIssue><Title>Plant, cell & environment</Title><ISOAbbreviation>Plant Cell Environ</ISOAbbreviation></Journal><ArticleTitle>Contrasting patterns of cytokinins between years in senescing aspen leaves.</ArticleTitle><Pagination><MedlinePgn>622-634</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/pce.12899</ELocationID><Abstract><AbstractText>Cytokinins are plant hormones that typically block or delay leaf senescence. We profiled 34 different cytokinins/cytokinin metabolites (including precursors, conjugates and degradation products) in leaves of a free-growing mature aspen (Populus tremula) before and after the initiation of autumnal senescence over three consecutive years. The levels and profiles of individual cytokinin species, or classes/groups, varied greatly between years, despite the fact that the onset of autumn senescence was at the same time each year, and senescence was not associated with depletion of either active or total cytokinin levels. Levels of aromatic cytokinins (topolins) were low and changed little over the autumn period. Diurnal variations and weather-dependent variations in cytokinin content were relatively limited. We also followed the expression patterns of all aspen genes implicated as having roles in cytokinin metabolism or signalling, but neither the pattern of regulation of any group of genes nor the expression of any particular gene supported the notion that decreased cytokinin signalling could explain the onset of senescence. Based on the results from this tree, we therefore suggest that cytokinin depletion is unlikely to explain the onset of autumn leaf senescence in aspen.</AbstractText><CopyrightInformation>© 2017 The Authors Plant, Cell & Environment Published by John Wiley & Sons Ltd.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Edlund</LastName><ForeName>Erik</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, 901 87, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Novak</LastName><ForeName>Ondrej</ForeName><Initials>O</Initials><AffiliationInfo><Affiliation>Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany CAS and Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, CZ-78371, Czech Republic.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, 901 83, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Karady</LastName><ForeName>Michal</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, 901 83, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ljung</LastName><ForeName>Karin</ForeName><Initials>K</Initials><Identifier Source="ORCID">http://orcid.org/0000-0003-2901-189X</Identifier><AffiliationInfo><Affiliation>Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, 901 83, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Jansson</LastName><ForeName>Stefan</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, 901 87, Sweden.</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>27</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="D003583">Cytokinins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D005960">Glucosides</NameOfSubstance></Chemical><Chemical><RegistryNumber>1406-65-1</RegistryNumber><NameOfSubstance UI="D002734">Chlorophyll</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D053898" MajorTopicYN="N">Biosynthetic Pathways</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002734" MajorTopicYN="N">Chlorophyll</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D003583" MajorTopicYN="N">Cytokinins</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D015536" MajorTopicYN="N">Down-Regulation</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="D017343" MajorTopicYN="N">Genes, Plant</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005960" MajorTopicYN="N">Glucosides</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012621" MajorTopicYN="N">Seasons</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014887" MajorTopicYN="N">Weather</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Populus tremula</Keyword><Keyword MajorTopicYN="N">autumn senescence</Keyword><Keyword MajorTopicYN="N">gene expression</Keyword><Keyword MajorTopicYN="N">metabolism</Keyword><Keyword MajorTopicYN="N">profiling</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>04</Month><Day>04</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2016</Year><Month>11</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2016</Year><Month>11</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>1</Month><Day>4</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>12</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2017</Year><Month>1</Month><Day>3</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">28042677</ArticleId><ArticleId IdType="doi">10.1111/pce.12899</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>République tchèque</li><li>Suède</li></country></list><tree><country name="Suède"><noRegion><name sortKey="Edlund, Erik" sort="Edlund, Erik" uniqKey="Edlund E" first="Erik" last="Edlund">Erik Edlund</name></noRegion><name sortKey="Jansson, Stefan" sort="Jansson, Stefan" uniqKey="Jansson S" first="Stefan" last="Jansson">Stefan Jansson</name><name sortKey="Karady, Michal" sort="Karady, Michal" uniqKey="Karady M" first="Michal" last="Karady">Michal Karady</name><name sortKey="Ljung, Karin" sort="Ljung, Karin" uniqKey="Ljung K" first="Karin" last="Ljung">Karin Ljung</name><name sortKey="Novak, Ondrej" sort="Novak, Ondrej" uniqKey="Novak O" first="Ondrej" last="Novak">Ondrej Novak</name></country><country name="République tchèque"><noRegion><name sortKey="Novak, Ondrej" sort="Novak, Ondrej" uniqKey="Novak O" first="Ondrej" last="Novak">Ondrej Novak</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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