Circadian clock components regulate entry and affect exit of seasonal dormancy as well as winter hardiness in Populus trees.
Identifieur interne : 003341 ( Main/Exploration ); précédent : 003340; suivant : 003342Circadian clock components regulate entry and affect exit of seasonal dormancy as well as winter hardiness in Populus trees.
Auteurs : Cristian Ibá Ez [Suède] ; Iwanka Kozarewa ; Mikael Johansson ; Erling Ogren ; Antje Rohde ; Maria E. ErikssonSource :
- Plant physiology [ 1532-2548 ] ; 2010.
Descripteurs français
- KwdFr :
- ARN des plantes (génétique), Basse température (MeSH), Gènes de plante (MeSH), Interférence par ARN (MeSH), Populus (croissance et développement), Populus (génétique), Rythme circadien (génétique), Régulation de l'expression des gènes végétaux (MeSH), Régulation négative (MeSH), Saisons (MeSH), Végétaux génétiquement modifiés (croissance et développement), Végétaux génétiquement modifiés (génétique).
- MESH :
- croissance et développement : Populus, Végétaux génétiquement modifiés.
- génétique : ARN des plantes, Populus, Rythme circadien, Végétaux génétiquement modifiés.
- Basse température, Gènes de plante, Interférence par ARN, Régulation de l'expression des gènes végétaux, Régulation négative, Saisons.
English descriptors
- KwdEn :
- Circadian Rhythm (genetics), Cold Temperature (MeSH), Down-Regulation (MeSH), Gene Expression Regulation, Plant (MeSH), Genes, Plant (MeSH), Plants, Genetically Modified (genetics), Plants, Genetically Modified (growth & development), Populus (genetics), Populus (growth & development), RNA Interference (MeSH), RNA, Plant (genetics), Seasons (MeSH).
- MESH :
- chemical , genetics : RNA, Plant.
- genetics : Circadian Rhythm, Plants, Genetically Modified, Populus.
- growth & development : Plants, Genetically Modified, Populus.
- Cold Temperature, Down-Regulation, Gene Expression Regulation, Plant, Genes, Plant, RNA Interference, Seasons.
Abstract
This study addresses the role of the circadian clock in the seasonal growth cycle of trees: growth cessation, bud set, freezing tolerance, and bud burst. Populus tremula x Populus tremuloides (Ptt) LATE ELONGATED HYPOCOTYL1 (PttLHY1), PttLHY2, and TIMING OF CAB EXPRESSION1 constitute regulatory clock components because down-regulation by RNA interference of these genes leads to altered phase and period of clock-controlled gene expression as compared to the wild type. Also, both RNA interference lines show about 1-h-shorter critical daylength for growth cessation as compared to the wild type, extending their period of growth. During winter dormancy, when the diurnal variation in clock gene expression stops altogether, down-regulation of PttLHY1 and PttLHY2 expression compromises freezing tolerance and the expression of C-REPEAT BINDING FACTOR1, suggesting a role of these genes in cold hardiness. Moreover, down-regulation of PttLHY1 and PttLHY2 causes a delay in bud burst. This evidence shows that in addition to a role in daylength-controlled processes, PttLHY plays a role in the temperature-dependent processes of dormancy in Populus such as cold hardiness and bud burst.
DOI: 10.1104/pp.110.158220
PubMed: 20530613
PubMed Central: PMC2923903
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Eriksson</name></author></analytic><series><title level="j">Plant physiology</title><idno type="eISSN">1532-2548</idno><imprint><date when="2010" type="published">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Circadian Rhythm (genetics)</term><term>Cold Temperature (MeSH)</term><term>Down-Regulation (MeSH)</term><term>Gene Expression Regulation, Plant (MeSH)</term><term>Genes, Plant (MeSH)</term><term>Plants, Genetically Modified (genetics)</term><term>Plants, Genetically Modified (growth & development)</term><term>Populus (genetics)</term><term>Populus (growth & development)</term><term>RNA Interference (MeSH)</term><term>RNA, Plant (genetics)</term><term>Seasons (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>ARN des plantes (génétique)</term><term>Basse température (MeSH)</term><term>Gènes de plante (MeSH)</term><term>Interférence par ARN (MeSH)</term><term>Populus (croissance et développement)</term><term>Populus (génétique)</term><term>Rythme circadien (génétique)</term><term>Régulation de l'expression des gènes végétaux (MeSH)</term><term>Régulation négative (MeSH)</term><term>Saisons (MeSH)</term><term>Végétaux génétiquement modifiés (croissance et développement)</term><term>Végétaux génétiquement modifiés (génétique)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>RNA, Plant</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Populus</term><term>Végétaux génétiquement modifiés</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Circadian Rhythm</term><term>Plants, Genetically Modified</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plants, Genetically Modified</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>ARN des plantes</term><term>Populus</term><term>Rythme circadien</term><term>Végétaux génétiquement modifiés</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Cold Temperature</term><term>Down-Regulation</term><term>Gene Expression Regulation, Plant</term><term>Genes, Plant</term><term>RNA Interference</term><term>Seasons</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Basse température</term><term>Gènes de plante</term><term>Interférence par ARN</term><term>Régulation de l'expression des gènes végétaux</term><term>Régulation négative</term><term>Saisons</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study addresses the role of the circadian clock in the seasonal growth cycle of trees: growth cessation, bud set, freezing tolerance, and bud burst. Populus tremula x Populus tremuloides (Ptt) LATE ELONGATED HYPOCOTYL1 (PttLHY1), PttLHY2, and TIMING OF CAB EXPRESSION1 constitute regulatory clock components because down-regulation by RNA interference of these genes leads to altered phase and period of clock-controlled gene expression as compared to the wild type. Also, both RNA interference lines show about 1-h-shorter critical daylength for growth cessation as compared to the wild type, extending their period of growth. During winter dormancy, when the diurnal variation in clock gene expression stops altogether, down-regulation of PttLHY1 and PttLHY2 expression compromises freezing tolerance and the expression of C-REPEAT BINDING FACTOR1, suggesting a role of these genes in cold hardiness. Moreover, down-regulation of PttLHY1 and PttLHY2 causes a delay in bud burst. This evidence shows that in addition to a role in daylength-controlled processes, PttLHY plays a role in the temperature-dependent processes of dormancy in Populus such as cold hardiness and bud burst.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20530613</PMID><DateCompleted><Year>2010</Year><Month>10</Month><Day>25</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1532-2548</ISSN><JournalIssue CitedMedium="Internet"><Volume>153</Volume><Issue>4</Issue><PubDate><Year>2010</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Plant physiology</Title><ISOAbbreviation>Plant Physiol</ISOAbbreviation></Journal><ArticleTitle>Circadian clock components regulate entry and affect exit of seasonal dormancy as well as winter hardiness in Populus trees.</ArticleTitle><Pagination><MedlinePgn>1823-33</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1104/pp.110.158220</ELocationID><Abstract><AbstractText>This study addresses the role of the circadian clock in the seasonal growth cycle of trees: growth cessation, bud set, freezing tolerance, and bud burst. Populus tremula x Populus tremuloides (Ptt) LATE ELONGATED HYPOCOTYL1 (PttLHY1), PttLHY2, and TIMING OF CAB EXPRESSION1 constitute regulatory clock components because down-regulation by RNA interference of these genes leads to altered phase and period of clock-controlled gene expression as compared to the wild type. Also, both RNA interference lines show about 1-h-shorter critical daylength for growth cessation as compared to the wild type, extending their period of growth. During winter dormancy, when the diurnal variation in clock gene expression stops altogether, down-regulation of PttLHY1 and PttLHY2 expression compromises freezing tolerance and the expression of C-REPEAT BINDING FACTOR1, suggesting a role of these genes in cold hardiness. Moreover, down-regulation of PttLHY1 and PttLHY2 causes a delay in bud burst. This evidence shows that in addition to a role in daylength-controlled processes, PttLHY plays a role in the temperature-dependent processes of dormancy in Populus such as cold hardiness and bud burst.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ibáñez</LastName><ForeName>Cristian</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, SE-901 87 Umea, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Kozarewa</LastName><ForeName>Iwanka</ForeName><Initials>I</Initials></Author><Author ValidYN="Y"><LastName>Johansson</LastName><ForeName>Mikael</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Ogren</LastName><ForeName>Erling</ForeName><Initials>E</Initials></Author><Author ValidYN="Y"><LastName>Rohde</LastName><ForeName>Antje</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Eriksson</LastName><ForeName>Maria E</ForeName><Initials>ME</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2010</Year><Month>06</Month><Day>08</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Physiol</MedlineTA><NlmUniqueID>0401224</NlmUniqueID><ISSNLinking>0032-0889</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D018749">RNA, Plant</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002940" MajorTopicYN="N">Circadian Rhythm</DescriptorName><QualifierName UI="Q000235" 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Eriksson</name><name sortKey="Johansson, Mikael" sort="Johansson, Mikael" uniqKey="Johansson M" first="Mikael" last="Johansson">Mikael Johansson</name><name sortKey="Kozarewa, Iwanka" sort="Kozarewa, Iwanka" uniqKey="Kozarewa I" first="Iwanka" last="Kozarewa">Iwanka Kozarewa</name><name sortKey="Ogren, Erling" sort="Ogren, Erling" uniqKey="Ogren E" first="Erling" last="Ogren">Erling Ogren</name><name sortKey="Rohde, Antje" sort="Rohde, Antje" uniqKey="Rohde A" first="Antje" last="Rohde">Antje Rohde</name></noCountry><country name="Suède"><noRegion><name sortKey="Iba Ez, Cristian" sort="Iba Ez, Cristian" uniqKey="Iba Ez C" first="Cristian" last="Ibá Ez">Cristian Ibá Ez</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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