Analyses of GA20ox- and GID1-over-expressing aspen suggest that gibberellins play two distinct roles in wood formation.
Identifieur interne : 003706 ( Main/Exploration ); précédent : 003705; suivant : 003707Analyses of GA20ox- and GID1-over-expressing aspen suggest that gibberellins play two distinct roles in wood formation.
Auteurs : Mélanie Mauriat [Suède] ; Thomas MoritzSource :
- The Plant journal : for cell and molecular biology [ 1365-313X ] ; 2009.
Descripteurs français
- KwdFr :
- ARN des plantes (génétique), Alignement de séquences (MeSH), Arabidopsis (génétique), Arabidopsis (métabolisme), Bois (croissance et développement), Bois (génétique), Bois (métabolisme), Clonage moléculaire (MeSH), Données de séquences moléculaires (MeSH), Gibbérellines (métabolisme), Mixed function oxygenases (génétique), Mixed function oxygenases (métabolisme), Populus (croissance et développement), Populus (enzymologie), Populus (génétique), Protéines végétales (génétique), Protéines végétales (métabolisme), Récepteurs de surface cellulaire (génétique), Récepteurs de surface cellulaire (métabolisme), Régions promotrices (génétique) (MeSH), Régulation de l'expression des gènes codant pour des enzymes (MeSH), Régulation de l'expression des gènes végétaux (MeSH), Séquence d'acides aminés (MeSH), Végétaux génétiquement modifiés (génétique), Végétaux génétiquement modifiés (métabolisme).
- MESH :
- croissance et développement : Bois, Populus.
- enzymologie : Populus.
- génétique : ARN des plantes, Arabidopsis, Bois, Mixed function oxygenases, Populus, Protéines végétales, Récepteurs de surface cellulaire, Végétaux génétiquement modifiés.
- métabolisme : Arabidopsis, Bois, Gibbérellines, Mixed function oxygenases, Protéines végétales, Récepteurs de surface cellulaire, Végétaux génétiquement modifiés.
- Alignement de séquences, Clonage moléculaire, Données de séquences moléculaires, Régions promotrices (génétique), Régulation de l'expression des gènes codant pour des enzymes, Régulation de l'expression des gènes végétaux, Séquence d'acides aminés.
English descriptors
- KwdEn :
- Amino Acid Sequence (MeSH), Arabidopsis (genetics), Arabidopsis (metabolism), Cloning, Molecular (MeSH), Gene Expression Regulation, Enzymologic (MeSH), Gene Expression Regulation, Plant (MeSH), Gibberellins (metabolism), Mixed Function Oxygenases (genetics), Mixed Function Oxygenases (metabolism), Molecular Sequence Data (MeSH), Plant Proteins (genetics), Plant Proteins (metabolism), Plants, Genetically Modified (genetics), Plants, Genetically Modified (metabolism), Populus (enzymology), Populus (genetics), Populus (growth & development), Promoter Regions, Genetic (MeSH), RNA, Plant (genetics), Receptors, Cell Surface (genetics), Receptors, Cell Surface (metabolism), Sequence Alignment (MeSH), Wood (genetics), Wood (growth & development), Wood (metabolism).
- MESH :
- chemical , genetics : Mixed Function Oxygenases, Plant Proteins, RNA, Plant, Receptors, Cell Surface.
- chemical , metabolism : Gibberellins, Mixed Function Oxygenases, Plant Proteins, Receptors, Cell Surface.
- enzymology : Populus.
- genetics : Arabidopsis, Plants, Genetically Modified, Populus, Wood.
- growth & development : Populus, Wood.
- metabolism : Arabidopsis, Plants, Genetically Modified, Wood.
- Amino Acid Sequence, Cloning, Molecular, Gene Expression Regulation, Enzymologic, Gene Expression Regulation, Plant, Molecular Sequence Data, Promoter Regions, Genetic, Sequence Alignment.
Abstract
Gibberellins (GAs) are involved in many aspects of plant development, including shoot growth, flowering and wood formation. Increased levels of bioactive GAs are known to induce xylogenesis and xylem fiber elongation in aspen. However, there is currently little information on the response pathway(s) that mediate GA effects on wood formation. Here we characterize an important element of the GA pathway in hybrid aspen: the GA receptor, GID1. Four orthologs of GID1 were identified in Populus tremula x P. tremuloides (PttGID1.1-1.4). These were functional when expressed in Arabidopsis thaliana, and appear to present a degree of sub-functionalization in hybrid aspen. PttGID1.1 and PttGID1.3 were over-expressed in independent lines of hybrid aspen using either the 35S promoter or a xylem-specific promoter (LMX5). The 35S:PttGID1 over-expressors shared several phenotypic traits previously described in 35S:AtGA20ox1 over-expressors, including rapid growth, increased elongation, and increased xylogenesis. However, their xylem fibers were not elongated, unlike those of 35S:AtGA20ox1 plants. Similar differences in the xylem fiber phenotype were observed when PttGID1.1, PttGID1.3 or AtGA20ox1 were expressed under the control of the LMX5 promoter, suggesting either that PttGID1.1 and PttGID1.3 play no role in fiber elongation or that GA homeostasis is strongly controlled when GA signaling is altered. Our data suggest that GAs are required in two distinct wood-formation processes that have tissue-specific signaling pathways: xylogenesis, as mediated by GA signaling in the cambium, and fiber elongation in the developing xylem.
DOI: 10.1111/j.1365-313X.2009.03836.x
PubMed: 19228336
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Swedish University of Agricultural Sciences, SE-901 87 Umeå, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, SE-901 87 Umeå</wicri:regionArea><wicri:noRegion>SE-901 87 Umeå</wicri:noRegion></affiliation></author><author><name sortKey="Moritz, Thomas" sort="Moritz, Thomas" uniqKey="Moritz T" first="Thomas" last="Moritz">Thomas Moritz</name></author></analytic><series><title level="j">The Plant journal : for cell and molecular biology</title><idno type="eISSN">1365-313X</idno><imprint><date when="2009" type="published">2009</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amino Acid Sequence (MeSH)</term><term>Arabidopsis (genetics)</term><term>Arabidopsis (metabolism)</term><term>Cloning, Molecular (MeSH)</term><term>Gene Expression Regulation, Enzymologic (MeSH)</term><term>Gene Expression Regulation, Plant (MeSH)</term><term>Gibberellins (metabolism)</term><term>Mixed Function Oxygenases (genetics)</term><term>Mixed Function Oxygenases (metabolism)</term><term>Molecular Sequence Data (MeSH)</term><term>Plant Proteins (genetics)</term><term>Plant Proteins (metabolism)</term><term>Plants, Genetically Modified (genetics)</term><term>Plants, Genetically Modified (metabolism)</term><term>Populus (enzymology)</term><term>Populus (genetics)</term><term>Populus (growth & development)</term><term>Promoter Regions, Genetic (MeSH)</term><term>RNA, Plant (genetics)</term><term>Receptors, Cell Surface (genetics)</term><term>Receptors, Cell Surface (metabolism)</term><term>Sequence Alignment (MeSH)</term><term>Wood (genetics)</term><term>Wood (growth & development)</term><term>Wood (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>ARN des plantes (génétique)</term><term>Alignement de séquences 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xml:lang="en"><term>Amino Acid Sequence</term><term>Cloning, Molecular</term><term>Gene Expression Regulation, Enzymologic</term><term>Gene Expression Regulation, Plant</term><term>Molecular Sequence Data</term><term>Promoter Regions, Genetic</term><term>Sequence Alignment</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Alignement de séquences</term><term>Clonage moléculaire</term><term>Données de séquences moléculaires</term><term>Régions promotrices (génétique)</term><term>Régulation de l'expression des gènes codant pour des enzymes</term><term>Régulation de l'expression des gènes végétaux</term><term>Séquence d'acides aminés</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Gibberellins (GAs) are involved in many aspects of plant development, including shoot growth, flowering and wood formation. Increased levels of bioactive GAs are known to induce xylogenesis and xylem fiber elongation in aspen. However, there is currently little information on the response pathway(s) that mediate GA effects on wood formation. Here we characterize an important element of the GA pathway in hybrid aspen: the GA receptor, GID1. Four orthologs of GID1 were identified in Populus tremula x P. tremuloides (PttGID1.1-1.4). These were functional when expressed in Arabidopsis thaliana, and appear to present a degree of sub-functionalization in hybrid aspen. PttGID1.1 and PttGID1.3 were over-expressed in independent lines of hybrid aspen using either the 35S promoter or a xylem-specific promoter (LMX5). The 35S:PttGID1 over-expressors shared several phenotypic traits previously described in 35S:AtGA20ox1 over-expressors, including rapid growth, increased elongation, and increased xylogenesis. However, their xylem fibers were not elongated, unlike those of 35S:AtGA20ox1 plants. Similar differences in the xylem fiber phenotype were observed when PttGID1.1, PttGID1.3 or AtGA20ox1 were expressed under the control of the LMX5 promoter, suggesting either that PttGID1.1 and PttGID1.3 play no role in fiber elongation or that GA homeostasis is strongly controlled when GA signaling is altered. Our data suggest that GAs are required in two distinct wood-formation processes that have tissue-specific signaling pathways: xylogenesis, as mediated by GA signaling in the cambium, and fiber elongation in the developing xylem.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">19228336</PMID><DateCompleted><Year>2009</Year><Month>07</Month><Day>31</Day></DateCompleted><DateRevised><Year>2009</Year><Month>07</Month><Day>01</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-313X</ISSN><JournalIssue CitedMedium="Internet"><Volume>58</Volume><Issue>6</Issue><PubDate><Year>2009</Year><Month>Jun</Month></PubDate></JournalIssue><Title>The Plant journal : for cell and molecular biology</Title><ISOAbbreviation>Plant J</ISOAbbreviation></Journal><ArticleTitle>Analyses of GA20ox- and GID1-over-expressing aspen suggest that gibberellins play two distinct roles in wood formation.</ArticleTitle><Pagination><MedlinePgn>989-1003</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/j.1365-313X.2009.03836.x</ELocationID><Abstract><AbstractText>Gibberellins (GAs) are involved in many aspects of plant development, including shoot growth, flowering and wood formation. Increased levels of bioactive GAs are known to induce xylogenesis and xylem fiber elongation in aspen. However, there is currently little information on the response pathway(s) that mediate GA effects on wood formation. Here we characterize an important element of the GA pathway in hybrid aspen: the GA receptor, GID1. Four orthologs of GID1 were identified in Populus tremula x P. tremuloides (PttGID1.1-1.4). These were functional when expressed in Arabidopsis thaliana, and appear to present a degree of sub-functionalization in hybrid aspen. PttGID1.1 and PttGID1.3 were over-expressed in independent lines of hybrid aspen using either the 35S promoter or a xylem-specific promoter (LMX5). The 35S:PttGID1 over-expressors shared several phenotypic traits previously described in 35S:AtGA20ox1 over-expressors, including rapid growth, increased elongation, and increased xylogenesis. However, their xylem fibers were not elongated, unlike those of 35S:AtGA20ox1 plants. Similar differences in the xylem fiber phenotype were observed when PttGID1.1, PttGID1.3 or AtGA20ox1 were expressed under the control of the LMX5 promoter, suggesting either that PttGID1.1 and PttGID1.3 play no role in fiber elongation or that GA homeostasis is strongly controlled when GA signaling is altered. Our data suggest that GAs are required in two distinct wood-formation processes that have tissue-specific signaling pathways: xylogenesis, as mediated by GA signaling in the cambium, and fiber elongation in the developing xylem.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Mauriat</LastName><ForeName>Mélanie</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, SE-901 87 Umeå, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Moritz</LastName><ForeName>Thomas</ForeName><Initials>T</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>2009</Year><Month>02</Month><Day>18</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Plant J</MedlineTA><NlmUniqueID>9207397</NlmUniqueID><ISSNLinking>0960-7412</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D005875">Gibberellins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010940">Plant Proteins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D018749">RNA, Plant</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D011956">Receptors, Cell Surface</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 1.-</RegistryNumber><NameOfSubstance UI="D006899">Mixed Function Oxygenases</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 1.14.99.-</RegistryNumber><NameOfSubstance UI="C492221">gibberellin 20-oxidase 1, Populus tremula X Populus tremuloides</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000595" MajorTopicYN="N">Amino Acid Sequence</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017360" MajorTopicYN="N">Arabidopsis</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D003001" MajorTopicYN="N">Cloning, Molecular</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015971" MajorTopicYN="N">Gene Expression Regulation, Enzymologic</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018506" MajorTopicYN="N">Gene Expression Regulation, Plant</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005875" MajorTopicYN="N">Gibberellins</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006899" MajorTopicYN="N">Mixed Function Oxygenases</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008969" MajorTopicYN="N">Molecular Sequence Data</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010940" MajorTopicYN="N">Plant Proteins</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D030821" MajorTopicYN="N">Plants, Genetically Modified</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000201" MajorTopicYN="N">enzymology</QualifierName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011401" MajorTopicYN="N">Promoter Regions, Genetic</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018749" MajorTopicYN="N">RNA, Plant</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011956" MajorTopicYN="N">Receptors, Cell Surface</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D016415" MajorTopicYN="N">Sequence Alignment</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014934" MajorTopicYN="N">Wood</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2009</Year><Month>2</Month><Day>21</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2009</Year><Month>2</Month><Day>21</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2009</Year><Month>8</Month><Day>1</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">19228336</ArticleId><ArticleId IdType="pii">TPJ3836</ArticleId><ArticleId IdType="doi">10.1111/j.1365-313X.2009.03836.x</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Suède</li></country></list><tree><noCountry><name sortKey="Moritz, Thomas" sort="Moritz, Thomas" uniqKey="Moritz T" first="Thomas" last="Moritz">Thomas Moritz</name></noCountry><country name="Suède"><noRegion><name sortKey="Mauriat, Melanie" sort="Mauriat, Melanie" uniqKey="Mauriat M" first="Mélanie" last="Mauriat">Mélanie Mauriat</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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