Adaptation to high salinity in poplar involves changes in xylem anatomy and auxin physiology.
Identifieur interne : 003E78 ( Main/Exploration ); précédent : 003E77; suivant : 003E79Adaptation to high salinity in poplar involves changes in xylem anatomy and auxin physiology.
Auteurs : U. Junghans [Allemagne] ; A. Polle ; P. Düchting ; E. Weiler ; B. Kuhlman ; F. Gruber ; T. TeichmannSource :
- Plant, cell & environment [ 0140-7791 ] ; 2006.
Descripteurs français
- KwdFr :
- Acides indolacétiques (métabolisme), Adaptation physiologique (MeSH), Alignement de séquences (MeSH), Amidohydrolases (génétique), Amidohydrolases (isolement et purification), Amidohydrolases (métabolisme), Analyse de séquence de protéine (MeSH), Arabidopsis (génétique), Chlorure de sodium (métabolisme), Données de séquences moléculaires (MeSH), Gènes de plante (MeSH), Populus (anatomie et histologie), Populus (génétique), Populus (métabolisme), Séquence d'acides aminés (MeSH), Végétaux génétiquement modifiés (anatomie et histologie), Végétaux génétiquement modifiés (métabolisme), Végétaux génétiquement modifiés (physiologie).
- MESH :
- anatomie et histologie : Populus, Végétaux génétiquement modifiés.
- génétique : Amidohydrolases, Arabidopsis, Populus.
- isolement et purification : Amidohydrolases.
- métabolisme : Acides indolacétiques, Amidohydrolases, Chlorure de sodium, Populus, Végétaux génétiquement modifiés.
- physiologie : Végétaux génétiquement modifiés.
- Adaptation physiologique, Alignement de séquences, Analyse de séquence de protéine, Données de séquences moléculaires, Gènes de plante, Séquence d'acides aminés.
English descriptors
- KwdEn :
- Adaptation, Physiological (MeSH), Amidohydrolases (genetics), Amidohydrolases (isolation & purification), Amidohydrolases (metabolism), Amino Acid Sequence (MeSH), Arabidopsis (genetics), Genes, Plant (MeSH), Indoleacetic Acids (metabolism), Molecular Sequence Data (MeSH), Plants, Genetically Modified (anatomy & histology), Plants, Genetically Modified (metabolism), Plants, Genetically Modified (physiology), Populus (anatomy & histology), Populus (genetics), Populus (metabolism), Sequence Alignment (MeSH), Sequence Analysis, Protein (MeSH), Sodium Chloride (metabolism).
- MESH :
- chemical , genetics : Amidohydrolases.
- chemical , isolation & purification : Amidohydrolases.
- chemical , metabolism : Amidohydrolases, Indoleacetic Acids, Sodium Chloride.
- anatomy & histology : Plants, Genetically Modified, Populus.
- genetics : Arabidopsis, Populus.
- metabolism : Plants, Genetically Modified, Populus.
- physiology : Plants, Genetically Modified.
- Adaptation, Physiological, Amino Acid Sequence, Genes, Plant, Molecular Sequence Data, Sequence Alignment, Sequence Analysis, Protein.
Abstract
To investigate the physiological basis of salt adaptation in poplar, we compared the effect of salt stress on wood anatomy and auxin physiology of the salt-resistant Populus euphratica and salt-sensitive Populus x canescens. Both poplar species showed decreases in vessel lumina associated with increases in wall strength in response to salt, however, in P. euphratica at three-fold higher salt concentrations than in P. x canescens. The predicted hydraulic conductivity of the wood formed under salt stress decreased in P. x canescens, while in P. euphratica, no significant effects of salt on conductivity and transpiration were observed. The concentration of free indole-3-acetic acid (IAA) decreased under salt stress in the xylem of both poplar species, but to a larger extent in P. x canescens than in P. euphratica. Only salt-treated P. euphratica exhibited an increase in IAA-conjugates in the xylem. Genes homologous to the auxin-amidohydrolase ILL3 were isolated from the xylems of P. euphratica and P. x canescens. For functional analysis, the auxin-amidohydrolase from P. x canescens was overexpressed in Arabidopsis. Transgenic Arabidopsis plants were more resistant to salt stress than the wild-type plants. Increased sensitivity of the transgenic Arabidopsis to IAA-Leu showed that the encoded hydrolase used IAA-Leu as a substrate. These results suggest that poplar can use IAA-amidoconjugates in the stem as a source of auxin to balance the effects of salt stress on auxin physiology.
DOI: 10.1111/j.1365-3040.2006.01529.x
PubMed: 16898015
Affiliations:
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Teichmann</name></author></analytic><series><title level="j">Plant, cell & environment</title><idno type="ISSN">0140-7791</idno><imprint><date when="2006" type="published">2006</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adaptation, Physiological (MeSH)</term><term>Amidohydrolases (genetics)</term><term>Amidohydrolases (isolation & purification)</term><term>Amidohydrolases (metabolism)</term><term>Amino Acid Sequence (MeSH)</term><term>Arabidopsis (genetics)</term><term>Genes, Plant (MeSH)</term><term>Indoleacetic Acids (metabolism)</term><term>Molecular Sequence Data (MeSH)</term><term>Plants, Genetically Modified (anatomy & histology)</term><term>Plants, Genetically Modified (metabolism)</term><term>Plants, Genetically Modified (physiology)</term><term>Populus (anatomy & histology)</term><term>Populus (genetics)</term><term>Populus (metabolism)</term><term>Sequence Alignment (MeSH)</term><term>Sequence Analysis, Protein (MeSH)</term><term>Sodium Chloride (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acides indolacétiques (métabolisme)</term><term>Adaptation physiologique (MeSH)</term><term>Alignement de séquences (MeSH)</term><term>Amidohydrolases (génétique)</term><term>Amidohydrolases (isolement et purification)</term><term>Amidohydrolases (métabolisme)</term><term>Analyse de séquence de protéine (MeSH)</term><term>Arabidopsis (génétique)</term><term>Chlorure de sodium (métabolisme)</term><term>Données de séquences moléculaires (MeSH)</term><term>Gènes de plante (MeSH)</term><term>Populus (anatomie et histologie)</term><term>Populus (génétique)</term><term>Populus (métabolisme)</term><term>Séquence d'acides aminés (MeSH)</term><term>Végétaux génétiquement modifiés (anatomie et histologie)</term><term>Végétaux génétiquement modifiés (métabolisme)</term><term>Végétaux génétiquement modifiés (physiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>Amidohydrolases</term></keywords><keywords scheme="MESH" type="chemical" qualifier="isolation & purification" xml:lang="en"><term>Amidohydrolases</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Amidohydrolases</term><term>Indoleacetic Acids</term><term>Sodium Chloride</term></keywords><keywords scheme="MESH" qualifier="anatomie et histologie" xml:lang="fr"><term>Populus</term><term>Végétaux génétiquement modifiés</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Plants, Genetically Modified</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Arabidopsis</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Amidohydrolases</term><term>Arabidopsis</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="isolement et purification" xml:lang="fr"><term>Amidohydrolases</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plants, Genetically Modified</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Acides indolacétiques</term><term>Amidohydrolases</term><term>Chlorure de sodium</term><term>Populus</term><term>Végétaux génétiquement modifiés</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Végétaux génétiquement modifiés</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plants, Genetically Modified</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adaptation, Physiological</term><term>Amino Acid Sequence</term><term>Genes, Plant</term><term>Molecular Sequence Data</term><term>Sequence Alignment</term><term>Sequence Analysis, Protein</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Adaptation physiologique</term><term>Alignement de séquences</term><term>Analyse de séquence de protéine</term><term>Données de séquences moléculaires</term><term>Gènes de plante</term><term>Séquence d'acides aminés</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To investigate the physiological basis of salt adaptation in poplar, we compared the effect of salt stress on wood anatomy and auxin physiology of the salt-resistant Populus euphratica and salt-sensitive Populus x canescens. Both poplar species showed decreases in vessel lumina associated with increases in wall strength in response to salt, however, in P. euphratica at three-fold higher salt concentrations than in P. x canescens. The predicted hydraulic conductivity of the wood formed under salt stress decreased in P. x canescens, while in P. euphratica, no significant effects of salt on conductivity and transpiration were observed. The concentration of free indole-3-acetic acid (IAA) decreased under salt stress in the xylem of both poplar species, but to a larger extent in P. x canescens than in P. euphratica. Only salt-treated P. euphratica exhibited an increase in IAA-conjugates in the xylem. Genes homologous to the auxin-amidohydrolase ILL3 were isolated from the xylems of P. euphratica and P. x canescens. For functional analysis, the auxin-amidohydrolase from P. x canescens was overexpressed in Arabidopsis. Transgenic Arabidopsis plants were more resistant to salt stress than the wild-type plants. Increased sensitivity of the transgenic Arabidopsis to IAA-Leu showed that the encoded hydrolase used IAA-Leu as a substrate. These results suggest that poplar can use IAA-amidoconjugates in the stem as a source of auxin to balance the effects of salt stress on auxin physiology.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">16898015</PMID><DateCompleted><Year>2006</Year><Month>11</Month><Day>09</Day></DateCompleted><DateRevised><Year>2019</Year><Month>11</Month><Day>10</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0140-7791</ISSN><JournalIssue CitedMedium="Print"><Volume>29</Volume><Issue>8</Issue><PubDate><Year>2006</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Plant, cell & environment</Title><ISOAbbreviation>Plant Cell Environ</ISOAbbreviation></Journal><ArticleTitle>Adaptation to high salinity in poplar involves changes in xylem anatomy and auxin physiology.</ArticleTitle><Pagination><MedlinePgn>1519-31</MedlinePgn></Pagination><Abstract><AbstractText>To investigate the physiological basis of salt adaptation in poplar, we compared the effect of salt stress on wood anatomy and auxin physiology of the salt-resistant Populus euphratica and salt-sensitive Populus x canescens. Both poplar species showed decreases in vessel lumina associated with increases in wall strength in response to salt, however, in P. euphratica at three-fold higher salt concentrations than in P. x canescens. The predicted hydraulic conductivity of the wood formed under salt stress decreased in P. x canescens, while in P. euphratica, no significant effects of salt on conductivity and transpiration were observed. The concentration of free indole-3-acetic acid (IAA) decreased under salt stress in the xylem of both poplar species, but to a larger extent in P. x canescens than in P. euphratica. Only salt-treated P. euphratica exhibited an increase in IAA-conjugates in the xylem. Genes homologous to the auxin-amidohydrolase ILL3 were isolated from the xylems of P. euphratica and P. x canescens. For functional analysis, the auxin-amidohydrolase from P. x canescens was overexpressed in Arabidopsis. Transgenic Arabidopsis plants were more resistant to salt stress than the wild-type plants. Increased sensitivity of the transgenic Arabidopsis to IAA-Leu showed that the encoded hydrolase used IAA-Leu as a substrate. These results suggest that poplar can use IAA-amidoconjugates in the stem as a source of auxin to balance the effects of salt stress on auxin physiology.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Junghans</LastName><ForeName>U</ForeName><Initials>U</Initials><AffiliationInfo><Affiliation>Institut für Forstbotanik, Georg-August-Universität Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Polle</LastName><ForeName>A</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Düchting</LastName><ForeName>P</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>Weiler</LastName><ForeName>E</ForeName><Initials>E</Initials></Author><Author ValidYN="Y"><LastName>Kuhlman</LastName><ForeName>B</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Gruber</LastName><ForeName>F</ForeName><Initials>F</Initials></Author><Author ValidYN="Y"><LastName>Teichmann</LastName><ForeName>T</ForeName><Initials>T</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></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="D007210">Indoleacetic Acids</NameOfSubstance></Chemical><Chemical><RegistryNumber>451W47IQ8X</RegistryNumber><NameOfSubstance UI="D012965">Sodium Chloride</NameOfSubstance></Chemical><Chemical><RegistryNumber>6U1S09C61L</RegistryNumber><NameOfSubstance UI="C030737">indoleacetic acid</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 3.5.-</RegistryNumber><NameOfSubstance UI="D000581">Amidohydrolases</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000222" MajorTopicYN="Y">Adaptation, Physiological</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000581" MajorTopicYN="N">Amidohydrolases</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000302" MajorTopicYN="N">isolation & purification</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><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></MeshHeading><MeshHeading><DescriptorName UI="D017343" MajorTopicYN="N">Genes, Plant</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D007210" MajorTopicYN="N">Indoleacetic Acids</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008969" MajorTopicYN="N">Molecular Sequence Data</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D030821" MajorTopicYN="N">Plants, Genetically Modified</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D016415" MajorTopicYN="N">Sequence Alignment</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D020539" MajorTopicYN="N">Sequence Analysis, Protein</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012965" MajorTopicYN="N">Sodium Chloride</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2006</Year><Month>8</Month><Day>11</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2006</Year><Month>11</Month><Day>11</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2006</Year><Month>8</Month><Day>11</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">16898015</ArticleId><ArticleId IdType="doi">10.1111/j.1365-3040.2006.01529.x</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Allemagne</li></country><region><li>Basse-Saxe</li></region><settlement><li>Göttingen</li></settlement><orgName><li>Université de Göttingen</li></orgName></list><tree><noCountry><name sortKey="Duchting, P" sort="Duchting, P" uniqKey="Duchting P" first="P" last="Düchting">P. Düchting</name><name sortKey="Gruber, F" sort="Gruber, F" uniqKey="Gruber F" first="F" last="Gruber">F. Gruber</name><name sortKey="Kuhlman, B" sort="Kuhlman, B" uniqKey="Kuhlman B" first="B" last="Kuhlman">B. Kuhlman</name><name sortKey="Polle, A" sort="Polle, A" uniqKey="Polle A" first="A" last="Polle">A. Polle</name><name sortKey="Teichmann, T" sort="Teichmann, T" uniqKey="Teichmann T" first="T" last="Teichmann">T. Teichmann</name><name sortKey="Weiler, E" sort="Weiler, E" uniqKey="Weiler E" first="E" last="Weiler">E. Weiler</name></noCountry><country name="Allemagne"><region name="Basse-Saxe"><name sortKey="Junghans, U" sort="Junghans, U" uniqKey="Junghans U" first="U" last="Junghans">U. Junghans</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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