Stimulating natural defenses in poplar clones (OP-367) increases plant metabolism of carbon tetrachloride.
Identifieur interne : 003D21 ( Main/Exploration ); précédent : 003D20; suivant : 003D22Stimulating natural defenses in poplar clones (OP-367) increases plant metabolism of carbon tetrachloride.
Auteurs : Abigail P. Ferrieri [États-Unis] ; Michael R. Thorpe ; Richard A. FerrieriSource :
- International journal of phytoremediation [ 1522-6514 ] ; 2006.
Descripteurs français
- KwdFr :
- Acide trichloro-acétique (métabolisme), Acétates (pharmacologie), Chromatographie en phase liquide à haute performance (MeSH), Cyclopentanes (pharmacologie), Facteur de croissance végétal (pharmacologie), Feuilles de plante (métabolisme), Oxylipines (MeSH), Photosynthèse (effets des médicaments et des substances chimiques), Populus (effets des médicaments et des substances chimiques), Populus (métabolisme), Radio-isotopes du carbone (analyse), Tétrachloro-méthane (métabolisme).
- MESH :
- analyse : Radio-isotopes du carbone.
- effets des médicaments et des substances chimiques : Photosynthèse, Populus.
- métabolisme : Acide trichloro-acétique, Feuilles de plante, Populus, Tétrachloro-méthane.
- pharmacologie : Acétates, Cyclopentanes, Facteur de croissance végétal.
- Chromatographie en phase liquide à haute performance, Oxylipines.
English descriptors
- KwdEn :
- Acetates (pharmacology), Carbon Radioisotopes (analysis), Carbon Tetrachloride (metabolism), Chromatography, High Pressure Liquid (MeSH), Cyclopentanes (pharmacology), Oxylipins (MeSH), Photosynthesis (drug effects), Plant Growth Regulators (pharmacology), Plant Leaves (metabolism), Populus (drug effects), Populus (metabolism), Trichloroacetic Acid (metabolism).
- MESH :
- chemical , analysis : Carbon Radioisotopes.
- chemical , metabolism : Carbon Tetrachloride, Trichloroacetic Acid.
- chemical , pharmacology : Acetates, Cyclopentanes, Plant Growth Regulators.
- drug effects : Photosynthesis, Populus.
- metabolism : Plant Leaves, Populus.
- Chromatography, High Pressure Liquid, Oxylipins.
Abstract
Groundwater contamination by carbon tetrachloride (CCl4) presents a health risk as a potential carcinogen and pollutant that is capable of depleting the ozone layer. Although use of poplar trees in a phytoremediation capacity has proven to be cost effective for cleaning contaminated sites, minimizing leaf emission of volatile contaminants remains a pressing issue. We hypothesized that recently fixed carbon plays a key role in CCl4 metabolism in planta yielding nonvolatile trichloroacetic acid (TCA) and that the extent of this metabolism can be altered by heightening plant defenses. Labeling intact leaves with (11)CO2 (t 1/2 20.4 m) can test this hypothesis, because the extremely short half-life of the tracer reflects only those processes involving recently fixed carbon. Using radio-HPLC analysis, we observed [(11)C]TCA from leaf extract from poplar clones (OP-367) whose roots were exposed to a saturated solution of CCl4 (520 ppm). Autoradiography of [(11)C]photosynthate showed increased leaf export and partitioning to the apex within 24 h of CCl4 exposure, suggesting that changes in plant metabolism and partitioning of recently fixed carbon occur rapidly. Additionally, leaf CCl4 emissions were highest in the morning, when carbon pools are low, suggesting a link between contaminant metabolism and leaf carbon utilization. Further, treatment with methyljasmonate, a plant hormone implicated in defense signal transduction, reduced leaf CCl4 emissions two-fold due to the increased formation of TCA.
DOI: 10.1080/15226510600846780
PubMed: 17120527
Affiliations:
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Ferrieri</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2006">2006</date><idno type="RBID">pubmed:17120527</idno><idno type="pmid">17120527</idno><idno type="doi">10.1080/15226510600846780</idno><idno type="wicri:Area/Main/Corpus">003C77</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003C77</idno><idno type="wicri:Area/Main/Curation">003C77</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">003C77</idno><idno type="wicri:Area/Main/Exploration">003C77</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Stimulating natural defenses in poplar clones (OP-367) increases plant metabolism of carbon tetrachloride.</title><author><name sortKey="Ferrieri, Abigail P" sort="Ferrieri, Abigail P" uniqKey="Ferrieri A" first="Abigail P" last="Ferrieri">Abigail P. 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Although use of poplar trees in a phytoremediation capacity has proven to be cost effective for cleaning contaminated sites, minimizing leaf emission of volatile contaminants remains a pressing issue. We hypothesized that recently fixed carbon plays a key role in CCl4 metabolism in planta yielding nonvolatile trichloroacetic acid (TCA) and that the extent of this metabolism can be altered by heightening plant defenses. Labeling intact leaves with (11)CO2 (t 1/2 20.4 m) can test this hypothesis, because the extremely short half-life of the tracer reflects only those processes involving recently fixed carbon. Using radio-HPLC analysis, we observed [(11)C]TCA from leaf extract from poplar clones (OP-367) whose roots were exposed to a saturated solution of CCl4 (520 ppm). Autoradiography of [(11)C]photosynthate showed increased leaf export and partitioning to the apex within 24 h of CCl4 exposure, suggesting that changes in plant metabolism and partitioning of recently fixed carbon occur rapidly. Additionally, leaf CCl4 emissions were highest in the morning, when carbon pools are low, suggesting a link between contaminant metabolism and leaf carbon utilization. Further, treatment with methyljasmonate, a plant hormone implicated in defense signal transduction, reduced leaf CCl4 emissions two-fold due to the increased formation of TCA.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17120527</PMID><DateCompleted><Year>2006</Year><Month>12</Month><Day>15</Day></DateCompleted><DateRevised><Year>2016</Year><Month>11</Month><Day>24</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1522-6514</ISSN><JournalIssue CitedMedium="Print"><Volume>8</Volume><Issue>3</Issue><PubDate><Year>2006</Year></PubDate></JournalIssue><Title>International journal of phytoremediation</Title><ISOAbbreviation>Int J Phytoremediation</ISOAbbreviation></Journal><ArticleTitle>Stimulating natural defenses in poplar clones (OP-367) increases plant metabolism of carbon tetrachloride.</ArticleTitle><Pagination><MedlinePgn>233-43</MedlinePgn></Pagination><Abstract><AbstractText>Groundwater contamination by carbon tetrachloride (CCl4) presents a health risk as a potential carcinogen and pollutant that is capable of depleting the ozone layer. Although use of poplar trees in a phytoremediation capacity has proven to be cost effective for cleaning contaminated sites, minimizing leaf emission of volatile contaminants remains a pressing issue. We hypothesized that recently fixed carbon plays a key role in CCl4 metabolism in planta yielding nonvolatile trichloroacetic acid (TCA) and that the extent of this metabolism can be altered by heightening plant defenses. Labeling intact leaves with (11)CO2 (t 1/2 20.4 m) can test this hypothesis, because the extremely short half-life of the tracer reflects only those processes involving recently fixed carbon. Using radio-HPLC analysis, we observed [(11)C]TCA from leaf extract from poplar clones (OP-367) whose roots were exposed to a saturated solution of CCl4 (520 ppm). Autoradiography of [(11)C]photosynthate showed increased leaf export and partitioning to the apex within 24 h of CCl4 exposure, suggesting that changes in plant metabolism and partitioning of recently fixed carbon occur rapidly. Additionally, leaf CCl4 emissions were highest in the morning, when carbon pools are low, suggesting a link between contaminant metabolism and leaf carbon utilization. Further, treatment with methyljasmonate, a plant hormone implicated in defense signal transduction, reduced leaf CCl4 emissions two-fold due to the increased formation of TCA.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ferrieri</LastName><ForeName>Abigail P</ForeName><Initials>AP</Initials><AffiliationInfo><Affiliation>College of the Holy Cross, Worcester, MA, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Thorpe</LastName><ForeName>Michael R</ForeName><Initials>MR</Initials></Author><Author ValidYN="Y"><LastName>Ferrieri</LastName><ForeName>Richard A</ForeName><Initials>RA</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, 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effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014238" MajorTopicYN="N">Trichloroacetic Acid</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2006</Year><Month>11</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2006</Year><Month>12</Month><Day>16</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2006</Year><Month>11</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">17120527</ArticleId><ArticleId IdType="doi">10.1080/15226510600846780</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Massachusetts</li></region></list><tree><noCountry><name sortKey="Ferrieri, Richard A" sort="Ferrieri, Richard A" uniqKey="Ferrieri R" first="Richard A" last="Ferrieri">Richard A. Ferrieri</name><name sortKey="Thorpe, Michael R" sort="Thorpe, Michael R" uniqKey="Thorpe M" first="Michael R" last="Thorpe">Michael R. Thorpe</name></noCountry><country name="États-Unis"><region name="Massachusetts"><name sortKey="Ferrieri, Abigail P" sort="Ferrieri, Abigail P" uniqKey="Ferrieri A" first="Abigail P" last="Ferrieri">Abigail P. Ferrieri</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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