Carbon isotope analysis of acetaldehyde emitted from leaves following mechanical stress and anoxia.
Identifieur interne : 003691 ( Main/Exploration ); précédent : 003690; suivant : 003692Carbon isotope analysis of acetaldehyde emitted from leaves following mechanical stress and anoxia.
Auteurs : K. Jardine [États-Unis] ; T. Karl ; M. Lerdau ; P. Harley ; A. Guenther ; J E MakSource :
- Plant biology (Stuttgart, Germany) [ 1435-8603 ] ; 2009.
Descripteurs français
- KwdFr :
- MESH :
- analyse : Acétaldéhyde, Isotopes du carbone.
- métabolisme : Acétaldéhyde, Feuilles de plante, Populus.
- physiologie : Hypoxie cellulaire.
- Contrainte mécanique.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Acetaldehyde, Carbon Isotopes.
- chemical , metabolism : Acetaldehyde.
- metabolism : Plant Leaves, Populus.
- physiology : Cell Hypoxia.
- Stress, Mechanical.
Abstract
Although the emission of acetaldehyde from plants into the atmosphere following biotic and abiotic stresses may significantly impact air quality and climate, its metabolic origin(s) remains uncertain. We investigated the pathway(s) responsible for the production of acetaldehyde in plants by studying variations in the stable carbon isotope composition of acetaldehyde emitted during leaf anoxia or following mechanical stress. Under an anoxic environment, C3 leaves produced acetaldehyde during ethanolic fermentation with a similar carbon isotopic composition to C3 bulk biomass. In contrast, the initial emission burst following mechanical wounding was 5-12 per thousand more depleted in (13)C than emissions under anoxia. Due to a large kinetic isotope effect during pyruvate decarboxylation catalysed by pyruvate dehydrogenase, acetyl-CoA and its biosynthetic products such as fatty acids are also depleted in (13)C relative to bulk biomass. It is well known that leaf wounding stimulates the release of large quantities of fatty acids from membranes, as well as the accumulation of reactive oxygen species (ROS). We suggest that, following leaf wounding, acetaldehyde depleted in (13)C is produced from fatty acid peroxidation reactions initiated by the accumulation of ROS. However, a variety of other pathways could also explain our results, including the conversion of acetyl-CoA to acetaldehyde by the esterase activity of aldehyde dehydrogenase.
DOI: 10.1111/j.1438-8677.2008.00155.x
PubMed: 19538397
Affiliations:
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Guenther</name></author><author><name sortKey="Mak, J E" sort="Mak, J E" uniqKey="Mak J" first="J E" last="Mak">J E Mak</name></author></analytic><series><title level="j">Plant biology (Stuttgart, Germany)</title><idno type="ISSN">1435-8603</idno><imprint><date when="2009" type="published">2009</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acetaldehyde (analysis)</term><term>Acetaldehyde (metabolism)</term><term>Carbon Isotopes (analysis)</term><term>Cell Hypoxia (physiology)</term><term>Plant Leaves (metabolism)</term><term>Populus (metabolism)</term><term>Stress, Mechanical (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acétaldéhyde (analyse)</term><term>Acétaldéhyde (métabolisme)</term><term>Contrainte mécanique (MeSH)</term><term>Feuilles de plante (métabolisme)</term><term>Hypoxie cellulaire (physiologie)</term><term>Isotopes du carbone (analyse)</term><term>Populus (métabolisme)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Acetaldehyde</term><term>Carbon Isotopes</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Acetaldehyde</term></keywords><keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Acétaldéhyde</term><term>Isotopes du carbone</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plant Leaves</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Acétaldéhyde</term><term>Feuilles de plante</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Hypoxie cellulaire</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Cell Hypoxia</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Stress, Mechanical</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Contrainte mécanique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Although the emission of acetaldehyde from plants into the atmosphere following biotic and abiotic stresses may significantly impact air quality and climate, its metabolic origin(s) remains uncertain. We investigated the pathway(s) responsible for the production of acetaldehyde in plants by studying variations in the stable carbon isotope composition of acetaldehyde emitted during leaf anoxia or following mechanical stress. Under an anoxic environment, C3 leaves produced acetaldehyde during ethanolic fermentation with a similar carbon isotopic composition to C3 bulk biomass. In contrast, the initial emission burst following mechanical wounding was 5-12 per thousand more depleted in (13)C than emissions under anoxia. Due to a large kinetic isotope effect during pyruvate decarboxylation catalysed by pyruvate dehydrogenase, acetyl-CoA and its biosynthetic products such as fatty acids are also depleted in (13)C relative to bulk biomass. It is well known that leaf wounding stimulates the release of large quantities of fatty acids from membranes, as well as the accumulation of reactive oxygen species (ROS). We suggest that, following leaf wounding, acetaldehyde depleted in (13)C is produced from fatty acid peroxidation reactions initiated by the accumulation of ROS. However, a variety of other pathways could also explain our results, including the conversion of acetyl-CoA to acetaldehyde by the esterase activity of aldehyde dehydrogenase.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">19538397</PMID><DateCompleted><Year>2009</Year><Month>08</Month><Day>21</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1435-8603</ISSN><JournalIssue CitedMedium="Print"><Volume>11</Volume><Issue>4</Issue><PubDate><Year>2009</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Plant biology (Stuttgart, Germany)</Title><ISOAbbreviation>Plant Biol (Stuttg)</ISOAbbreviation></Journal><ArticleTitle>Carbon isotope analysis of acetaldehyde emitted from leaves following mechanical stress and anoxia.</ArticleTitle><Pagination><MedlinePgn>591-7</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/j.1438-8677.2008.00155.x</ELocationID><Abstract><AbstractText>Although the emission of acetaldehyde from plants into the atmosphere following biotic and abiotic stresses may significantly impact air quality and climate, its metabolic origin(s) remains uncertain. We investigated the pathway(s) responsible for the production of acetaldehyde in plants by studying variations in the stable carbon isotope composition of acetaldehyde emitted during leaf anoxia or following mechanical stress. Under an anoxic environment, C3 leaves produced acetaldehyde during ethanolic fermentation with a similar carbon isotopic composition to C3 bulk biomass. In contrast, the initial emission burst following mechanical wounding was 5-12 per thousand more depleted in (13)C than emissions under anoxia. Due to a large kinetic isotope effect during pyruvate decarboxylation catalysed by pyruvate dehydrogenase, acetyl-CoA and its biosynthetic products such as fatty acids are also depleted in (13)C relative to bulk biomass. It is well known that leaf wounding stimulates the release of large quantities of fatty acids from membranes, as well as the accumulation of reactive oxygen species (ROS). We suggest that, following leaf wounding, acetaldehyde depleted in (13)C is produced from fatty acid peroxidation reactions initiated by the accumulation of ROS. However, a variety of other pathways could also explain our results, including the conversion of acetyl-CoA to acetaldehyde by the esterase activity of aldehyde dehydrogenase.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Jardine</LastName><ForeName>K</ForeName><Initials>K</Initials><AffiliationInfo><Affiliation>School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, USA. jardine@b2science.org</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Karl</LastName><ForeName>T</ForeName><Initials>T</Initials></Author><Author ValidYN="Y"><LastName>Lerdau</LastName><ForeName>M</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Harley</LastName><ForeName>P</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>Guenther</LastName><ForeName>A</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Mak</LastName><ForeName>J E</ForeName><Initials>JE</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D052061">Research Support, N.I.H., Extramural</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Plant Biol (Stuttg)</MedlineTA><NlmUniqueID>101148926</NlmUniqueID><ISSNLinking>1435-8603</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D002247">Carbon Isotopes</NameOfSubstance></Chemical><Chemical><RegistryNumber>GO1N1ZPR3B</RegistryNumber><NameOfSubstance UI="D000079">Acetaldehyde</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000079" MajorTopicYN="N">Acetaldehyde</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="N">analysis</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002247" MajorTopicYN="N">Carbon Isotopes</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="Y">analysis</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D015687" MajorTopicYN="N">Cell Hypoxia</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013314" MajorTopicYN="Y">Stress, Mechanical</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2009</Year><Month>6</Month><Day>23</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2009</Year><Month>6</Month><Day>23</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2009</Year><Month>8</Month><Day>22</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">19538397</ArticleId><ArticleId IdType="pii">PLB155</ArticleId><ArticleId IdType="doi">10.1111/j.1438-8677.2008.00155.x</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>État de New York</li></region></list><tree><noCountry><name sortKey="Guenther, A" sort="Guenther, A" uniqKey="Guenther A" first="A" last="Guenther">A. Guenther</name><name sortKey="Harley, P" sort="Harley, P" uniqKey="Harley P" first="P" last="Harley">P. Harley</name><name sortKey="Karl, T" sort="Karl, T" uniqKey="Karl T" first="T" last="Karl">T. Karl</name><name sortKey="Lerdau, M" sort="Lerdau, M" uniqKey="Lerdau M" first="M" last="Lerdau">M. Lerdau</name><name sortKey="Mak, J E" sort="Mak, J E" uniqKey="Mak J" first="J E" last="Mak">J E Mak</name></noCountry><country name="États-Unis"><region name="État de New York"><name sortKey="Jardine, K" sort="Jardine, K" uniqKey="Jardine K" first="K" last="Jardine">K. Jardine</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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