Transgenic, non-isoprene emitting poplars don't like it hot.
Identifieur interne : 003A42 ( Main/Exploration ); précédent : 003A41; suivant : 003A43Transgenic, non-isoprene emitting poplars don't like it hot.
Auteurs : Katja Behnke [Allemagne] ; Barbara Ehlting ; Markus Teuber ; Martina Bauerfeind ; Sandrine Louis ; Robert H Nsch ; Andrea Polle ; Jörg Bohlmann ; Jörg-Peter SchnitzlerSource :
- The Plant journal : for cell and molecular biology [ 0960-7412 ] ; 2007.
Descripteurs français
- KwdFr :
- Acclimatation (physiologie), Alkyl et aryl transferases (métabolisme), Butadiènes (MeSH), Chlorophylle (métabolisme), Composés organiques du phosphore (métabolisme), Dioxyde de carbone (métabolisme), Hémiterpènes (métabolisme), Hémiterpènes (physiologie), Interférence par ARN (MeSH), Pentanes (MeSH), Photosynthèse (physiologie), Pigments biologiques (métabolisme), Populus (génétique), Populus (métabolisme), Populus (physiologie), Température élevée (MeSH), Transport d'électrons (physiologie), Végétaux génétiquement modifiés (métabolisme), Végétaux génétiquement modifiés (physiologie).
- MESH :
- génétique : Populus.
- métabolisme : Alkyl et aryl transferases, Chlorophylle, Composés organiques du phosphore, Dioxyde de carbone, Hémiterpènes, Pigments biologiques, Populus, Végétaux génétiquement modifiés.
- physiologie : Acclimatation, Hémiterpènes, Photosynthèse, Populus, Transport d'électrons, Végétaux génétiquement modifiés.
- Butadiènes, Interférence par ARN, Pentanes, Température élevée.
English descriptors
- KwdEn :
- Acclimatization (physiology), Alkyl and Aryl Transferases (metabolism), Butadienes (MeSH), Carbon Dioxide (metabolism), Chlorophyll (metabolism), Electron Transport (physiology), Hemiterpenes (metabolism), Hemiterpenes (physiology), Hot Temperature (MeSH), Organophosphorus Compounds (metabolism), Pentanes (MeSH), Photosynthesis (physiology), Pigments, Biological (metabolism), Plants, Genetically Modified (metabolism), Plants, Genetically Modified (physiology), Populus (genetics), Populus (metabolism), Populus (physiology), RNA Interference (MeSH).
- MESH :
- chemical , metabolism : Alkyl and Aryl Transferases, Carbon Dioxide, Chlorophyll, Hemiterpenes, Organophosphorus Compounds, Pigments, Biological.
- genetics : Populus.
- metabolism : Plants, Genetically Modified, Populus.
- physiology : Acclimatization, Electron Transport, Hemiterpenes, Photosynthesis, Plants, Genetically Modified, Populus.
- chemical : Butadienes, Hot Temperature, Pentanes, RNA Interference.
Abstract
The physiological role of isoprene emission in plants is a matter of much debate. One of the most widely propagated hypotheses suggests a function of isoprene in the protection of leaf physiological processes against thermal and oxidative stress. To test this hypothesis, we developed transgenic Grey poplar (Populusxcanescens) plants in which gene expression of isoprene synthase (ISPS) was either silenced by RNA interference (RNAi) or upregulated by over-expression of the ISPS gene. Despite increased ISPS mRNA levels, we did not observe consistent increases in isoprene emission in the over-expressing lines, indicating post-transcriptional control of ISPS by co-suppression. In the RNAi lines, levels of isoprene emission were effectively suppressed to virtually zero. Transgenic plants were subjected to temperature stress with three transient heat phases of 38-40 degrees C, each followed by phases of recovery at 30 degrees C. Parallel measurements of gas exchange, chlorophyll fluorescence and isoprene emission provided new insights into the physiological link between isoprene and enhanced temperature tolerance. Transgenic non-isoprene-emitting poplars showed reduced rates of net assimilation and photosynthetic electron transport during heat stress, but not in the absence of stress. The decrease in the efficiency of photochemistry was inversely correlated with the increase in heat dissipation of absorbed light energy, measured as NPQ (non-photochemical quenching). Isoprene-repressed poplars also displayed an increased formation of the xanthophyll cycle pigment zeaxanthin in the absence of stress, which can cause increased NPQ or may indicate an increased requirement for antioxidants. In conclusion, using a molecular genetic approach, we show that down-regulation of isoprene emission affects thermotolerance of photosynthesis and induces increased energy dissipation by NPQ pathways.
DOI: 10.1111/j.1365-313X.2007.03157.x
PubMed: 17587235
Affiliations:
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xml:lang="en"><term>Acclimatization (physiology)</term><term>Alkyl and Aryl Transferases (metabolism)</term><term>Butadienes (MeSH)</term><term>Carbon Dioxide (metabolism)</term><term>Chlorophyll (metabolism)</term><term>Electron Transport (physiology)</term><term>Hemiterpenes (metabolism)</term><term>Hemiterpenes (physiology)</term><term>Hot Temperature (MeSH)</term><term>Organophosphorus Compounds (metabolism)</term><term>Pentanes (MeSH)</term><term>Photosynthesis (physiology)</term><term>Pigments, Biological (metabolism)</term><term>Plants, Genetically Modified (metabolism)</term><term>Plants, Genetically Modified (physiology)</term><term>Populus (genetics)</term><term>Populus (metabolism)</term><term>Populus (physiology)</term><term>RNA Interference (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acclimatation (physiologie)</term><term>Alkyl et aryl transferases (métabolisme)</term><term>Butadiènes (MeSH)</term><term>Chlorophylle (métabolisme)</term><term>Composés organiques du phosphore (métabolisme)</term><term>Dioxyde de carbone (métabolisme)</term><term>Hémiterpènes (métabolisme)</term><term>Hémiterpènes (physiologie)</term><term>Interférence par ARN (MeSH)</term><term>Pentanes (MeSH)</term><term>Photosynthèse (physiologie)</term><term>Pigments biologiques (métabolisme)</term><term>Populus (génétique)</term><term>Populus (métabolisme)</term><term>Populus (physiologie)</term><term>Température élevée (MeSH)</term><term>Transport d'électrons (physiologie)</term><term>Végétaux génétiquement modifiés (métabolisme)</term><term>Végétaux génétiquement modifiés (physiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Alkyl and Aryl Transferases</term><term>Carbon Dioxide</term><term>Chlorophyll</term><term>Hemiterpenes</term><term>Organophosphorus Compounds</term><term>Pigments, Biological</term></keywords><keywords scheme="MESH" qualifier="genetics" 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Transport</term><term>Hemiterpenes</term><term>Photosynthesis</term><term>Plants, Genetically Modified</term><term>Populus</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Butadienes</term><term>Hot Temperature</term><term>Pentanes</term><term>RNA Interference</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Butadiènes</term><term>Interférence par ARN</term><term>Pentanes</term><term>Température élevée</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The physiological role of isoprene emission in plants is a matter of much debate. One of the most widely propagated hypotheses suggests a function of isoprene in the protection of leaf physiological processes against thermal and oxidative stress. To test this hypothesis, we developed transgenic Grey poplar (Populusxcanescens) plants in which gene expression of isoprene synthase (ISPS) was either silenced by RNA interference (RNAi) or upregulated by over-expression of the ISPS gene. Despite increased ISPS mRNA levels, we did not observe consistent increases in isoprene emission in the over-expressing lines, indicating post-transcriptional control of ISPS by co-suppression. In the RNAi lines, levels of isoprene emission were effectively suppressed to virtually zero. Transgenic plants were subjected to temperature stress with three transient heat phases of 38-40 degrees C, each followed by phases of recovery at 30 degrees C. Parallel measurements of gas exchange, chlorophyll fluorescence and isoprene emission provided new insights into the physiological link between isoprene and enhanced temperature tolerance. Transgenic non-isoprene-emitting poplars showed reduced rates of net assimilation and photosynthetic electron transport during heat stress, but not in the absence of stress. The decrease in the efficiency of photochemistry was inversely correlated with the increase in heat dissipation of absorbed light energy, measured as NPQ (non-photochemical quenching). Isoprene-repressed poplars also displayed an increased formation of the xanthophyll cycle pigment zeaxanthin in the absence of stress, which can cause increased NPQ or may indicate an increased requirement for antioxidants. In conclusion, using a molecular genetic approach, we show that down-regulation of isoprene emission affects thermotolerance of photosynthesis and induces increased energy dissipation by NPQ pathways.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17587235</PMID><DateCompleted><Year>2007</Year><Month>11</Month><Day>27</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0960-7412</ISSN><JournalIssue CitedMedium="Print"><Volume>51</Volume><Issue>3</Issue><PubDate><Year>2007</Year><Month>Aug</Month></PubDate></JournalIssue><Title>The Plant journal : for cell and molecular biology</Title><ISOAbbreviation>Plant J</ISOAbbreviation></Journal><ArticleTitle>Transgenic, non-isoprene emitting poplars don't like it hot.</ArticleTitle><Pagination><MedlinePgn>485-99</MedlinePgn></Pagination><Abstract><AbstractText>The physiological role of isoprene emission in plants is a matter of much debate. One of the most widely propagated hypotheses suggests a function of isoprene in the protection of leaf physiological processes against thermal and oxidative stress. To test this hypothesis, we developed transgenic Grey poplar (Populusxcanescens) plants in which gene expression of isoprene synthase (ISPS) was either silenced by RNA interference (RNAi) or upregulated by over-expression of the ISPS gene. Despite increased ISPS mRNA levels, we did not observe consistent increases in isoprene emission in the over-expressing lines, indicating post-transcriptional control of ISPS by co-suppression. In the RNAi lines, levels of isoprene emission were effectively suppressed to virtually zero. Transgenic plants were subjected to temperature stress with three transient heat phases of 38-40 degrees C, each followed by phases of recovery at 30 degrees C. Parallel measurements of gas exchange, chlorophyll fluorescence and isoprene emission provided new insights into the physiological link between isoprene and enhanced temperature tolerance. Transgenic non-isoprene-emitting poplars showed reduced rates of net assimilation and photosynthetic electron transport during heat stress, but not in the absence of stress. The decrease in the efficiency of photochemistry was inversely correlated with the increase in heat dissipation of absorbed light energy, measured as NPQ (non-photochemical quenching). Isoprene-repressed poplars also displayed an increased formation of the xanthophyll cycle pigment zeaxanthin in the absence of stress, which can cause increased NPQ or may indicate an increased requirement for antioxidants. In conclusion, using a molecular genetic approach, we show that down-regulation of isoprene emission affects thermotolerance of photosynthesis and induces increased energy dissipation by NPQ pathways.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Behnke</LastName><ForeName>Katja</ForeName><Initials>K</Initials><AffiliationInfo><Affiliation>Research Centre Karlsruhe, Institute for Meteorology and Climate Research (IMK-IFU), Kreuzeckbahnstr. 19, 82467 Garmisch-Partenkirchen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ehlting</LastName><ForeName>Barbara</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Teuber</LastName><ForeName>Markus</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Bauerfeind</LastName><ForeName>Martina</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Louis</LastName><ForeName>Sandrine</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Hänsch</LastName><ForeName>Robert</ForeName><Initials>R</Initials></Author><Author ValidYN="Y"><LastName>Polle</LastName><ForeName>Andrea</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Bohlmann</LastName><ForeName>Jörg</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Schnitzler</LastName><ForeName>Jörg-Peter</ForeName><Initials>JP</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>2007</Year><Month>06</Month><Day>21</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="D002070">Butadienes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D045782">Hemiterpenes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D009943">Organophosphorus Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010420">Pentanes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010860">Pigments, Biological</NameOfSubstance></Chemical><Chemical><RegistryNumber>0A62964IBU</RegistryNumber><NameOfSubstance UI="C005059">isoprene</NameOfSubstance></Chemical><Chemical><RegistryNumber>1406-65-1</RegistryNumber><NameOfSubstance UI="D002734">Chlorophyll</NameOfSubstance></Chemical><Chemical><RegistryNumber>142M471B3J</RegistryNumber><NameOfSubstance UI="D002245">Carbon Dioxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>358-72-5</RegistryNumber><NameOfSubstance UI="C043060">3,3-dimethylallyl pyrophosphate</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 2.5.-</RegistryNumber><NameOfSubstance UI="D019883">Alkyl and Aryl Transferases</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 2.5.1.-</RegistryNumber><NameOfSubstance UI="C093854">isoprene synthase</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000064" MajorTopicYN="N">Acclimatization</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D019883" MajorTopicYN="N">Alkyl and Aryl Transferases</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002070" MajorTopicYN="N">Butadienes</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002245" MajorTopicYN="N">Carbon Dioxide</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002734" MajorTopicYN="N">Chlorophyll</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004579" MajorTopicYN="N">Electron Transport</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D045782" MajorTopicYN="N">Hemiterpenes</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006358" MajorTopicYN="Y">Hot Temperature</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D009943" MajorTopicYN="N">Organophosphorus Compounds</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010420" MajorTopicYN="N">Pentanes</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010860" MajorTopicYN="N">Pigments, Biological</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D030821" MajorTopicYN="N">Plants, Genetically Modified</DescriptorName><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="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D034622" MajorTopicYN="N">RNA Interference</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>6</Month><Day>26</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2007</Year><Month>12</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2007</Year><Month>6</Month><Day>26</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">17587235</ArticleId><ArticleId IdType="pii">TPJ3157</ArticleId><ArticleId IdType="doi">10.1111/j.1365-313X.2007.03157.x</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Allemagne</li></country></list><tree><noCountry><name sortKey="Bauerfeind, Martina" sort="Bauerfeind, Martina" uniqKey="Bauerfeind M" first="Martina" last="Bauerfeind">Martina Bauerfeind</name><name sortKey="Bohlmann, Jorg" sort="Bohlmann, Jorg" uniqKey="Bohlmann J" first="Jörg" last="Bohlmann">Jörg Bohlmann</name><name sortKey="Ehlting, Barbara" sort="Ehlting, Barbara" uniqKey="Ehlting B" first="Barbara" last="Ehlting">Barbara Ehlting</name><name sortKey="H Nsch, Robert" sort="H Nsch, Robert" uniqKey="H Nsch R" first="Robert" last="H Nsch">Robert H Nsch</name><name sortKey="Louis, Sandrine" sort="Louis, Sandrine" uniqKey="Louis S" first="Sandrine" last="Louis">Sandrine Louis</name><name sortKey="Polle, Andrea" sort="Polle, Andrea" uniqKey="Polle A" first="Andrea" last="Polle">Andrea Polle</name><name sortKey="Schnitzler, Jorg Peter" sort="Schnitzler, Jorg Peter" uniqKey="Schnitzler J" first="Jörg-Peter" last="Schnitzler">Jörg-Peter Schnitzler</name><name sortKey="Teuber, Markus" sort="Teuber, Markus" uniqKey="Teuber M" first="Markus" last="Teuber">Markus Teuber</name></noCountry><country name="Allemagne"><noRegion><name sortKey="Behnke, Katja" sort="Behnke, Katja" uniqKey="Behnke K" first="Katja" last="Behnke">Katja Behnke</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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