Paxillus involutus mycorrhiza attenuate NaCl-stress responses in the salt-sensitive hybrid poplar Populusxcanescens.
Identifieur interne : 003B05 ( Main/Exploration ); précédent : 003B04; suivant : 003B06Paxillus involutus mycorrhiza attenuate NaCl-stress responses in the salt-sensitive hybrid poplar Populusxcanescens.
Auteurs : R. Langenfeld-Heyser [Allemagne] ; J. Gao [Allemagne] ; T. Ducic [Allemagne] ; Ph Tachd [Allemagne] ; C F Lu [Allemagne] ; E. Fritz [Allemagne] ; A. Gafur [Allemagne] ; A. Polle [Allemagne]Source :
- Mycorrhiza [ 0940-6360 ] ; 2007.
Descripteurs français
- KwdFr :
- Antioxydants (métabolisme), Basidiomycota (physiologie), Basidiomycota (ultrastructure), Biomasse (MeSH), Cations (métabolisme), Chlorure de sodium (métabolisme), Chlorure de sodium (pharmacologie), Espèces réactives de l'oxygène (métabolisme), Microscopie électronique à transmission (MeSH), Peroxyde d'hydrogène (métabolisme), Populus (croissance et développement), Populus (effets des médicaments et des substances chimiques), Populus (microbiologie), Racines de plante (croissance et développement), Racines de plante (microbiologie), Racines de plante (métabolisme), Stress oxydatif (MeSH).
- MESH :
- croissance et développement : Populus, Racines de plante.
- effets des médicaments et des substances chimiques : Populus.
- microbiologie : Populus, Racines de plante.
- métabolisme : Antioxydants, Cations, Chlorure de sodium, Espèces réactives de l'oxygène, Peroxyde d'hydrogène, Racines de plante.
- pharmacologie : Chlorure de sodium.
- physiologie : Basidiomycota.
- ultrastructure : Basidiomycota, Biomasse, Microscopie électronique à transmission, Stress oxydatif.
English descriptors
- KwdEn :
- Antioxidants (metabolism), Basidiomycota (physiology), Basidiomycota (ultrastructure), Biomass (MeSH), Cations (metabolism), Hydrogen Peroxide (metabolism), Microscopy, Electron, Transmission (MeSH), Oxidative Stress (MeSH), Plant Roots (growth & development), Plant Roots (metabolism), Plant Roots (microbiology), Populus (drug effects), Populus (growth & development), Populus (microbiology), Reactive Oxygen Species (metabolism), Sodium Chloride (metabolism), Sodium Chloride (pharmacology).
- MESH :
- chemical , metabolism : Antioxidants, Cations, Hydrogen Peroxide, Reactive Oxygen Species, Sodium Chloride.
- drug effects : Populus.
- growth & development : Plant Roots, Populus.
- metabolism : Plant Roots.
- microbiology : Plant Roots, Populus.
- chemical , pharmacology : Sodium Chloride.
- physiology : Basidiomycota.
- ultrastructure : Basidiomycota.
- Biomass, Microscopy, Electron, Transmission, Oxidative Stress.
Abstract
In order to characterise the effect of ectomycorrhiza on Na+-responses of the salt-sensitive poplar hybrid Populus x canescens, growth and stress responses of Paxillus involutus (strain MAJ) were tested in liquid cultures in the presence of 20 to 500 mM NaCl, and the effects of mycorrhization on mineral nutrient accumulation and oxidative stress were characterised in mycorrhizal and non-mycorrhizal poplar seedlings exposed to 150 mM NaCl. Paxillus involutus was salt tolerant, showing biomass increases in media containing up to 500 mM NaCl after 4 weeks growth. Mycorrhizal mantle formation on poplar roots was not affected by 150 mM NaCl. Whole plant performance was positively affected by the fungus because total biomass was greater and leaves accumulated less Na+ than non-mycorrhizal plants. Energy dispersive X-ray microanalysis using transmission electron microscopy analysis of the influence of mycorrhization on the subcellular localisation of Na+ and Cl- in roots showed that the hyphal mantle did not diminish salt accumulation in root cell walls, indicating that mycorrhization did not provide a physical barrier against excess salinity. In the absence of salt stress, mycorrhizal poplar roots contained higher Na+ and Cl- concentrations than non-mycorrhizal poplar roots. Paxillus involutus hyphae produced H2O2 in the mantle but not in the Hartig net or in pure culture. Salt exposure resulted in H2O2 formation in cortical cells of both non-mycorrhizal and mycorrhizal poplar and stimulated peroxidase but not superoxide dismutase activities. This shows that mature ectomycorrhiza was unable to suppress salt-induced oxidative stress. Element analyses suggest that improved performance of mycorrhizal poplar under salt stress may result from diminished xylem loading of Na+ and increased supply with K+.
DOI: 10.1007/s00572-006-0084-3
PubMed: 17115201
Affiliations:
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Fritz</name><affiliation wicri:level="4"><nlm:affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen</wicri:regionArea><placeName><region type="land" nuts="2">Basse-Saxe</region><settlement type="city">Göttingen</settlement></placeName><orgName type="university">Université de Göttingen</orgName></affiliation></author><author><name sortKey="Gafur, A" sort="Gafur, A" uniqKey="Gafur A" first="A" last="Gafur">A. Gafur</name><affiliation wicri:level="4"><nlm:affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen</wicri:regionArea><placeName><region type="land" nuts="2">Basse-Saxe</region><settlement type="city">Göttingen</settlement></placeName><orgName type="university">Université de Göttingen</orgName></affiliation></author><author><name sortKey="Polle, A" sort="Polle, A" uniqKey="Polle A" first="A" last="Polle">A. Polle</name><affiliation wicri:level="4"><nlm:affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany. apolle@gwdg.de.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen</wicri:regionArea><placeName><region type="land" nuts="2">Basse-Saxe</region><settlement type="city">Göttingen</settlement></placeName><orgName type="university">Université de Göttingen</orgName></affiliation></author></analytic><series><title level="j">Mycorrhiza</title><idno type="ISSN">0940-6360</idno><imprint><date when="2007" type="published">2007</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antioxidants (metabolism)</term><term>Basidiomycota (physiology)</term><term>Basidiomycota (ultrastructure)</term><term>Biomass (MeSH)</term><term>Cations (metabolism)</term><term>Hydrogen Peroxide (metabolism)</term><term>Microscopy, Electron, Transmission (MeSH)</term><term>Oxidative Stress (MeSH)</term><term>Plant Roots (growth & development)</term><term>Plant Roots (metabolism)</term><term>Plant Roots (microbiology)</term><term>Populus (drug effects)</term><term>Populus (growth & development)</term><term>Populus (microbiology)</term><term>Reactive Oxygen Species (metabolism)</term><term>Sodium Chloride (metabolism)</term><term>Sodium Chloride (pharmacology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Antioxydants (métabolisme)</term><term>Basidiomycota (physiologie)</term><term>Basidiomycota (ultrastructure)</term><term>Biomasse (MeSH)</term><term>Cations (métabolisme)</term><term>Chlorure de sodium (métabolisme)</term><term>Chlorure de sodium (pharmacologie)</term><term>Espèces réactives de l'oxygène (métabolisme)</term><term>Microscopie électronique à transmission (MeSH)</term><term>Peroxyde d'hydrogène (métabolisme)</term><term>Populus (croissance et développement)</term><term>Populus (effets des médicaments et des substances chimiques)</term><term>Populus (microbiologie)</term><term>Racines de plante (croissance et développement)</term><term>Racines de plante (microbiologie)</term><term>Racines de plante (métabolisme)</term><term>Stress oxydatif (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Antioxidants</term><term>Cations</term><term>Hydrogen Peroxide</term><term>Reactive Oxygen Species</term><term>Sodium Chloride</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Populus</term><term>Racines de plante</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="effets des médicaments et des substances chimiques" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plant Roots</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Populus</term><term>Racines de plante</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Plant Roots</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Antioxydants</term><term>Cations</term><term>Chlorure de sodium</term><term>Espèces réactives de l'oxygène</term><term>Peroxyde d'hydrogène</term><term>Racines de plante</term></keywords><keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr"><term>Chlorure de sodium</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Sodium Chloride</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Basidiomycota</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Basidiomycota</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Basidiomycota</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biomass</term><term>Microscopy, Electron, Transmission</term><term>Oxidative Stress</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="fr"><term>Basidiomycota</term><term>Biomasse</term><term>Microscopie électronique à transmission</term><term>Stress oxydatif</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In order to characterise the effect of ectomycorrhiza on Na+-responses of the salt-sensitive poplar hybrid Populus x canescens, growth and stress responses of Paxillus involutus (strain MAJ) were tested in liquid cultures in the presence of 20 to 500 mM NaCl, and the effects of mycorrhization on mineral nutrient accumulation and oxidative stress were characterised in mycorrhizal and non-mycorrhizal poplar seedlings exposed to 150 mM NaCl. Paxillus involutus was salt tolerant, showing biomass increases in media containing up to 500 mM NaCl after 4 weeks growth. Mycorrhizal mantle formation on poplar roots was not affected by 150 mM NaCl. Whole plant performance was positively affected by the fungus because total biomass was greater and leaves accumulated less Na+ than non-mycorrhizal plants. Energy dispersive X-ray microanalysis using transmission electron microscopy analysis of the influence of mycorrhization on the subcellular localisation of Na+ and Cl- in roots showed that the hyphal mantle did not diminish salt accumulation in root cell walls, indicating that mycorrhization did not provide a physical barrier against excess salinity. In the absence of salt stress, mycorrhizal poplar roots contained higher Na+ and Cl- concentrations than non-mycorrhizal poplar roots. Paxillus involutus hyphae produced H2O2 in the mantle but not in the Hartig net or in pure culture. Salt exposure resulted in H2O2 formation in cortical cells of both non-mycorrhizal and mycorrhizal poplar and stimulated peroxidase but not superoxide dismutase activities. This shows that mature ectomycorrhiza was unable to suppress salt-induced oxidative stress. Element analyses suggest that improved performance of mycorrhizal poplar under salt stress may result from diminished xylem loading of Na+ and increased supply with K+.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17115201</PMID><DateCompleted><Year>2007</Year><Month>06</Month><Day>11</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0940-6360</ISSN><JournalIssue CitedMedium="Print"><Volume>17</Volume><Issue>2</Issue><PubDate><Year>2007</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Mycorrhiza</Title><ISOAbbreviation>Mycorrhiza</ISOAbbreviation></Journal><ArticleTitle>Paxillus involutus mycorrhiza attenuate NaCl-stress responses in the salt-sensitive hybrid poplar Populusxcanescens.</ArticleTitle><Pagination><MedlinePgn>121-131</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s00572-006-0084-3</ELocationID><Abstract><AbstractText>In order to characterise the effect of ectomycorrhiza on Na+-responses of the salt-sensitive poplar hybrid Populus x canescens, growth and stress responses of Paxillus involutus (strain MAJ) were tested in liquid cultures in the presence of 20 to 500 mM NaCl, and the effects of mycorrhization on mineral nutrient accumulation and oxidative stress were characterised in mycorrhizal and non-mycorrhizal poplar seedlings exposed to 150 mM NaCl. Paxillus involutus was salt tolerant, showing biomass increases in media containing up to 500 mM NaCl after 4 weeks growth. Mycorrhizal mantle formation on poplar roots was not affected by 150 mM NaCl. Whole plant performance was positively affected by the fungus because total biomass was greater and leaves accumulated less Na+ than non-mycorrhizal plants. Energy dispersive X-ray microanalysis using transmission electron microscopy analysis of the influence of mycorrhization on the subcellular localisation of Na+ and Cl- in roots showed that the hyphal mantle did not diminish salt accumulation in root cell walls, indicating that mycorrhization did not provide a physical barrier against excess salinity. In the absence of salt stress, mycorrhizal poplar roots contained higher Na+ and Cl- concentrations than non-mycorrhizal poplar roots. Paxillus involutus hyphae produced H2O2 in the mantle but not in the Hartig net or in pure culture. Salt exposure resulted in H2O2 formation in cortical cells of both non-mycorrhizal and mycorrhizal poplar and stimulated peroxidase but not superoxide dismutase activities. This shows that mature ectomycorrhiza was unable to suppress salt-induced oxidative stress. Element analyses suggest that improved performance of mycorrhizal poplar under salt stress may result from diminished xylem loading of Na+ and increased supply with K+.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Langenfeld-Heyser</LastName><ForeName>R</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gao</LastName><ForeName>J</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ducic</LastName><ForeName>T</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Tachd</LastName><ForeName>Ph</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lu</LastName><ForeName>C F</ForeName><Initials>CF</Initials><AffiliationInfo><Affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Fritz</LastName><ForeName>E</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gafur</LastName><ForeName>A</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Polle</LastName><ForeName>A</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Forstbotanisches Institut, Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany. apolle@gwdg.de.</Affiliation></AffiliationInfo></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>2006</Year><Month>11</Month><Day>18</Day></ArticleDate></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Mycorrhiza</MedlineTA><NlmUniqueID>100955036</NlmUniqueID><ISSNLinking>0940-6360</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance 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MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="Y">drug effects</QualifierName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D017382" MajorTopicYN="N">Reactive Oxygen Species</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012965" MajorTopicYN="N">Sodium Chloride</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000494" MajorTopicYN="Y">pharmacology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2006</Year><Month>04</Month><Day>26</Day></PubMedPubDate><PubMedPubDate 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