Could the differences in O(3) sensitivity between two poplar clones be related to a difference in antioxidant defense and secondary metabolic response to O(3) influx?
Identifieur interne : 003953 ( Main/Exploration ); précédent : 003952; suivant : 003954Could the differences in O(3) sensitivity between two poplar clones be related to a difference in antioxidant defense and secondary metabolic response to O(3) influx?
Auteurs : Daniela Di Baccio [Italie] ; Antonella Castagna ; Elena Paoletti ; Luca Sebastiani ; Annamaria RanieriSource :
- Tree physiology [ 0829-318X ] ; 2008.
Descripteurs français
- KwdFr :
- Acide ascorbique (métabolisme), Antioxydants (métabolisme), Chlorophylle (métabolisme), Espèces réactives de l'oxygène (métabolisme), Expression des gènes (MeSH), Feuilles de plante (métabolisme), Fluorescence (MeSH), Glutathion (métabolisme), Oxydoréduction (MeSH), Ozone (métabolisme), Peroxyde d'hydrogène (métabolisme), Photosynthèse (MeSH), Phénols (métabolisme), Populus (enzymologie), Populus (métabolisme), Protéines végétales (génétique), Protéines végétales (métabolisme), Stomates de plante (métabolisme), Stress oxydatif (MeSH).
- MESH :
- enzymologie : Populus.
- génétique : Protéines végétales.
- métabolisme : Acide ascorbique, Antioxydants, Chlorophylle, Espèces réactives de l'oxygène, Feuilles de plante, Glutathion, Ozone, Peroxyde d'hydrogène, Phénols, Populus, Protéines végétales, Stomates de plante.
- Expression des gènes, Fluorescence, Oxydoréduction, Photosynthèse, Stress oxydatif.
English descriptors
- KwdEn :
- Antioxidants (metabolism), Ascorbic Acid (metabolism), Chlorophyll (metabolism), Fluorescence (MeSH), Gene Expression (MeSH), Glutathione (metabolism), Hydrogen Peroxide (metabolism), Oxidation-Reduction (MeSH), Oxidative Stress (MeSH), Ozone (metabolism), Phenols (metabolism), Photosynthesis (MeSH), Plant Leaves (metabolism), Plant Proteins (genetics), Plant Proteins (metabolism), Plant Stomata (metabolism), Populus (enzymology), Populus (metabolism), Reactive Oxygen Species (metabolism).
- MESH :
- chemical , genetics : Plant Proteins.
- chemical , metabolism : Antioxidants, Ascorbic Acid, Chlorophyll, Glutathione, Hydrogen Peroxide, Ozone, Phenols, Plant Proteins, Reactive Oxygen Species.
- enzymology : Populus.
- metabolism : Plant Leaves, Plant Stomata, Populus.
- Fluorescence, Gene Expression, Oxidation-Reduction, Oxidative Stress, Photosynthesis.
Abstract
Increasing global background concentrations of tropospheric ozone (O(3)) are expected to affect both crops and forest ecosystems negatively. The phytotoxic effects of O(3) are mainly associated with the O(3)-induced production of reactive oxygen species (ROS) in excess of the ability of the plant to maintain ROS below the tolerance threshold. It is the balance between O(3) uptake and cellular antioxidant potential that determines O(3) effects on vegetation. The greater sensitivity to ambient O(3) exposure (60 nl l(-1) O(3), 15 days, 5 h a day) of poplar clone Eridano (Populus deltoides x maximowiczii) compared with clone I-214 (P. x euramericana) was reflected in a lower photosynthetic efficiency, higher stomatal conductance and hydrogen peroxide (H(2)O(2)) accumulation and more pronounced leaf tissue membrane injury in Eridano than in I-214. We checked if the differences in clonal responses to O(3) fumigation were related to differing capacities for antioxidant defense and phenylpropanoid metabolism and found that the increases in foliar ascorbate and phenolic concentrations and phenylpropanoid metabolism in Eridano were insufficient to counteract H(2)O(2) accumulation and the consequent oxidative stress. This was probably because the higher influx of O(3) into Eridano leaves compared with I-214 leaves resulted in a lower potential detoxification capacity per unit of O(3) influx.
DOI: 10.1093/treephys/28.12.1761
PubMed: 19193559
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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(MeSH)</term><term>Oxidative Stress (MeSH)</term><term>Ozone (metabolism)</term><term>Phenols (metabolism)</term><term>Photosynthesis (MeSH)</term><term>Plant Leaves (metabolism)</term><term>Plant Proteins (genetics)</term><term>Plant Proteins (metabolism)</term><term>Plant Stomata (metabolism)</term><term>Populus (enzymology)</term><term>Populus (metabolism)</term><term>Reactive Oxygen Species (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acide ascorbique (métabolisme)</term><term>Antioxydants (métabolisme)</term><term>Chlorophylle (métabolisme)</term><term>Espèces réactives de l'oxygène (métabolisme)</term><term>Expression des gènes (MeSH)</term><term>Feuilles de plante (métabolisme)</term><term>Fluorescence (MeSH)</term><term>Glutathion (métabolisme)</term><term>Oxydoréduction (MeSH)</term><term>Ozone (métabolisme)</term><term>Peroxyde d'hydrogène (métabolisme)</term><term>Photosynthèse (MeSH)</term><term>Phénols (métabolisme)</term><term>Populus (enzymologie)</term><term>Populus (métabolisme)</term><term>Protéines végétales (génétique)</term><term>Protéines végétales (métabolisme)</term><term>Stomates de plante (métabolisme)</term><term>Stress oxydatif (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>Plant Proteins</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Antioxidants</term><term>Ascorbic Acid</term><term>Chlorophyll</term><term>Glutathione</term><term>Hydrogen Peroxide</term><term>Ozone</term><term>Phenols</term><term>Plant Proteins</term><term>Reactive Oxygen Species</term></keywords><keywords scheme="MESH" qualifier="enzymologie" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="enzymology" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Protéines végétales</term></keywords><keywords scheme="MESH" qualifier="metabolism" 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of tropospheric ozone (O(3)) are expected to affect both crops and forest ecosystems negatively. The phytotoxic effects of O(3) are mainly associated with the O(3)-induced production of reactive oxygen species (ROS) in excess of the ability of the plant to maintain ROS below the tolerance threshold. It is the balance between O(3) uptake and cellular antioxidant potential that determines O(3) effects on vegetation. The greater sensitivity to ambient O(3) exposure (60 nl l(-1) O(3), 15 days, 5 h a day) of poplar clone Eridano (Populus deltoides x maximowiczii) compared with clone I-214 (P. x euramericana) was reflected in a lower photosynthetic efficiency, higher stomatal conductance and hydrogen peroxide (H(2)O(2)) accumulation and more pronounced leaf tissue membrane injury in Eridano than in I-214. We checked if the differences in clonal responses to O(3) fumigation were related to differing capacities for antioxidant defense and phenylpropanoid metabolism and found that the increases in foliar ascorbate and phenolic concentrations and phenylpropanoid metabolism in Eridano were insufficient to counteract H(2)O(2) accumulation and the consequent oxidative stress. This was probably because the higher influx of O(3) into Eridano leaves compared with I-214 leaves resulted in a lower potential detoxification capacity per unit of O(3) influx.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">19193559</PMID><DateCompleted><Year>2009</Year><Month>03</Month><Day>05</Day></DateCompleted><DateRevised><Year>2019</Year><Month>05</Month><Day>13</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0829-318X</ISSN><JournalIssue CitedMedium="Print"><Volume>28</Volume><Issue>12</Issue><PubDate><Year>2008</Year><Month>Dec</Month></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Could the differences in O(3) sensitivity between two poplar clones be related to a difference in antioxidant defense and secondary metabolic response to O(3) influx?</ArticleTitle><Pagination><MedlinePgn>1761-72</MedlinePgn></Pagination><Abstract><AbstractText>Increasing global background concentrations of tropospheric ozone (O(3)) are expected to affect both crops and forest ecosystems negatively. The phytotoxic effects of O(3) are mainly associated with the O(3)-induced production of reactive oxygen species (ROS) in excess of the ability of the plant to maintain ROS below the tolerance threshold. It is the balance between O(3) uptake and cellular antioxidant potential that determines O(3) effects on vegetation. The greater sensitivity to ambient O(3) exposure (60 nl l(-1) O(3), 15 days, 5 h a day) of poplar clone Eridano (Populus deltoides x maximowiczii) compared with clone I-214 (P. x euramericana) was reflected in a lower photosynthetic efficiency, higher stomatal conductance and hydrogen peroxide (H(2)O(2)) accumulation and more pronounced leaf tissue membrane injury in Eridano than in I-214. We checked if the differences in clonal responses to O(3) fumigation were related to differing capacities for antioxidant defense and phenylpropanoid metabolism and found that the increases in foliar ascorbate and phenolic concentrations and phenylpropanoid metabolism in Eridano were insufficient to counteract H(2)O(2) accumulation and the consequent oxidative stress. This was probably because the higher influx of O(3) into Eridano leaves compared with I-214 leaves resulted in a lower potential detoxification capacity per unit of O(3) influx.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Di Baccio</LastName><ForeName>Daniela</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, I-56127 Pisa, Italy. dibaccio@sssup.it</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Castagna</LastName><ForeName>Antonella</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Paoletti</LastName><ForeName>Elena</ForeName><Initials>E</Initials></Author><Author ValidYN="Y"><LastName>Sebastiani</LastName><ForeName>Luca</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Ranieri</LastName><ForeName>Annamaria</ForeName><Initials>A</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>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000975">Antioxidants</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010636">Phenols</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010940">Plant Proteins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance 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Stomata</DescriptorName><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="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D017382" MajorTopicYN="N">Reactive Oxygen Species</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2009</Year><Month>2</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2009</Year><Month>2</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2009</Year><Month>3</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">19193559</ArticleId><ArticleId IdType="doi">10.1093/treephys/28.12.1761</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Italie</li></country></list><tree><noCountry><name sortKey="Castagna, Antonella" sort="Castagna, Antonella" uniqKey="Castagna A" first="Antonella" last="Castagna">Antonella Castagna</name><name sortKey="Paoletti, Elena" sort="Paoletti, Elena" uniqKey="Paoletti E" first="Elena" last="Paoletti">Elena Paoletti</name><name sortKey="Ranieri, Annamaria" sort="Ranieri, Annamaria" uniqKey="Ranieri A" first="Annamaria" last="Ranieri">Annamaria Ranieri</name><name sortKey="Sebastiani, Luca" sort="Sebastiani, Luca" uniqKey="Sebastiani L" first="Luca" last="Sebastiani">Luca Sebastiani</name></noCountry><country name="Italie"><noRegion><name sortKey="Di Baccio, Daniela" sort="Di Baccio, Daniela" uniqKey="Di Baccio D" first="Daniela" last="Di Baccio">Daniela Di Baccio</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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