Phytochemical analysis of mature tree root exudates in situ and their role in shaping soil microbial communities in relation to tree N-acquisition strategy.
Identifieur interne : 000211 ( Main/Exploration ); précédent : 000210; suivant : 000212Phytochemical analysis of mature tree root exudates in situ and their role in shaping soil microbial communities in relation to tree N-acquisition strategy.
Auteurs : Serge Michalet [France] ; Julien Rohr ; Denis Warshan ; Clément Bardon ; Jean-Christophe Roggy ; Anne-Marie Domenach ; Sonia Czarnes ; Thomas Pommier ; Bruno Combourieu ; Nadine Guillaumaud ; Floriant Bellvert ; Gilles Comte ; Franck PolySource :
- Plant physiology and biochemistry : PPB [ 1873-2690 ] ; 2013.
Descripteurs français
- KwdFr :
- MESH :
- métabolisme : Arbres, Azote, Exsudats végétaux, Racines de plante.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Nitrogen, Plant Exudates.
- metabolism : Plant Roots, Trees.
Abstract
Eperua falcata (Aublet), a late-successional species in tropical rainforest and one of the most abundant tree in French Guiana, has developed an original strategy concerning N-acquisition by largely preferring nitrate, rather than ammonium (H. Schimann, S. Ponton, S. Hättenschwiler, B. Ferry, R. Lensi, A.M. Domenach, J.C. Roggy, Differing nitrogen use strategies of two tropical rainforest tree species in French Guiana: evidence from (15)N natural abundance and microbial activities, Soil Biol. Biochem. 40 (2008) 487-494). Given the preference of this species for nitrate, we hypothesized that root exudates would promote nitrate availability by (a) enhancing nitrate production by stimulating ammonium oxidation or (b) minimizing nitrate losses by inhibiting denitrification. Root exudates were collected in situ in monospecific planted plots. The phytochemical analysis of these exudates and of several of their corresponding root extracts was achieved using UHPLC/DAD/ESI-QTOF and allowed the identification of diverse secondary metabolites belonging to the flavonoid family. Our results show that (i) the distinct exudation patterns observed are related to distinct root morphologies, and this was associated with a shift in the root flavonoid content, (ii) a root extract representative of the diverse compounds detected in roots showed a significant and selective metabolic inhibition of isolated denitrifiers in vitro, and (iii) in soil plots the abundance of nirK-type denitrifiers was negatively affected in rhizosphere soil compared to bulk. Altogether this led us to formulate hypothesis concerning the ecological role of the identified compounds in relation to N-acquisition strategy of this species.
DOI: 10.1016/j.plaphy.2013.05.003
PubMed: 23727287
Affiliations:
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Electronic address: sergemichalet@yahoo.fr.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Université Lyon1, CNRS, UMR5557, INRA, USC1364, Ecologie Microbienne, Centre d'Etude des Substances Naturelles, Villeurbanne F-69622, France; Université Lyon1, CNRS, UMR5557, INRA, USC1364, Ecologie Microbienne, Groupes Fonctionnels Microbiens et Cycle de l'Azote, Villeurbanne F-69622</wicri:regionArea><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author><author><name sortKey="Rohr, Julien" sort="Rohr, Julien" uniqKey="Rohr J" first="Julien" last="Rohr">Julien Rohr</name></author><author><name sortKey="Warshan, Denis" sort="Warshan, Denis" uniqKey="Warshan D" first="Denis" last="Warshan">Denis Warshan</name></author><author><name sortKey="Bardon, Clement" sort="Bardon, Clement" uniqKey="Bardon C" first="Clément" last="Bardon">Clément Bardon</name></author><author><name sortKey="Roggy, Jean Christophe" sort="Roggy, Jean Christophe" uniqKey="Roggy J" first="Jean-Christophe" last="Roggy">Jean-Christophe Roggy</name></author><author><name sortKey="Domenach, Anne Marie" sort="Domenach, Anne Marie" uniqKey="Domenach A" first="Anne-Marie" last="Domenach">Anne-Marie Domenach</name></author><author><name sortKey="Czarnes, Sonia" sort="Czarnes, Sonia" uniqKey="Czarnes S" first="Sonia" last="Czarnes">Sonia Czarnes</name></author><author><name sortKey="Pommier, Thomas" sort="Pommier, Thomas" uniqKey="Pommier T" first="Thomas" last="Pommier">Thomas Pommier</name></author><author><name sortKey="Combourieu, Bruno" sort="Combourieu, Bruno" uniqKey="Combourieu B" first="Bruno" last="Combourieu">Bruno Combourieu</name></author><author><name sortKey="Guillaumaud, Nadine" sort="Guillaumaud, Nadine" uniqKey="Guillaumaud N" first="Nadine" last="Guillaumaud">Nadine Guillaumaud</name></author><author><name sortKey="Bellvert, Floriant" sort="Bellvert, Floriant" uniqKey="Bellvert F" first="Floriant" last="Bellvert">Floriant Bellvert</name></author><author><name sortKey="Comte, Gilles" sort="Comte, Gilles" uniqKey="Comte G" first="Gilles" last="Comte">Gilles Comte</name></author><author><name sortKey="Poly, Franck" sort="Poly, Franck" uniqKey="Poly F" first="Franck" last="Poly">Franck Poly</name></author></analytic><series><title level="j">Plant physiology and biochemistry : PPB</title><idno type="eISSN">1873-2690</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Nitrogen (metabolism)</term><term>Plant Exudates (metabolism)</term><term>Plant Roots (metabolism)</term><term>Trees (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Arbres (métabolisme)</term><term>Azote (métabolisme)</term><term>Exsudats végétaux (métabolisme)</term><term>Racines de plante (métabolisme)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Nitrogen</term><term>Plant Exudates</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plant Roots</term><term>Trees</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Arbres</term><term>Azote</term><term>Exsudats végétaux</term><term>Racines de plante</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Eperua falcata (Aublet), a late-successional species in tropical rainforest and one of the most abundant tree in French Guiana, has developed an original strategy concerning N-acquisition by largely preferring nitrate, rather than ammonium (H. Schimann, S. Ponton, S. Hättenschwiler, B. Ferry, R. Lensi, A.M. Domenach, J.C. Roggy, Differing nitrogen use strategies of two tropical rainforest tree species in French Guiana: evidence from (15)N natural abundance and microbial activities, Soil Biol. Biochem. 40 (2008) 487-494). Given the preference of this species for nitrate, we hypothesized that root exudates would promote nitrate availability by (a) enhancing nitrate production by stimulating ammonium oxidation or (b) minimizing nitrate losses by inhibiting denitrification. Root exudates were collected in situ in monospecific planted plots. The phytochemical analysis of these exudates and of several of their corresponding root extracts was achieved using UHPLC/DAD/ESI-QTOF and allowed the identification of diverse secondary metabolites belonging to the flavonoid family. Our results show that (i) the distinct exudation patterns observed are related to distinct root morphologies, and this was associated with a shift in the root flavonoid content, (ii) a root extract representative of the diverse compounds detected in roots showed a significant and selective metabolic inhibition of isolated denitrifiers in vitro, and (iii) in soil plots the abundance of nirK-type denitrifiers was negatively affected in rhizosphere soil compared to bulk. Altogether this led us to formulate hypothesis concerning the ecological role of the identified compounds in relation to N-acquisition strategy of this species.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">23727287</PMID><DateCompleted><Year>2014</Year><Month>06</Month><Day>13</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-2690</ISSN><JournalIssue CitedMedium="Internet"><Volume>72</Volume><PubDate><Year>2013</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Plant physiology and biochemistry : PPB</Title><ISOAbbreviation>Plant Physiol Biochem</ISOAbbreviation></Journal><ArticleTitle>Phytochemical analysis of mature tree root exudates in situ and their role in shaping soil microbial communities in relation to tree N-acquisition strategy.</ArticleTitle><Pagination><MedlinePgn>169-77</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.plaphy.2013.05.003</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0981-9428(13)00168-X</ELocationID><Abstract><AbstractText>Eperua falcata (Aublet), a late-successional species in tropical rainforest and one of the most abundant tree in French Guiana, has developed an original strategy concerning N-acquisition by largely preferring nitrate, rather than ammonium (H. Schimann, S. Ponton, S. Hättenschwiler, B. Ferry, R. Lensi, A.M. Domenach, J.C. Roggy, Differing nitrogen use strategies of two tropical rainforest tree species in French Guiana: evidence from (15)N natural abundance and microbial activities, Soil Biol. Biochem. 40 (2008) 487-494). Given the preference of this species for nitrate, we hypothesized that root exudates would promote nitrate availability by (a) enhancing nitrate production by stimulating ammonium oxidation or (b) minimizing nitrate losses by inhibiting denitrification. Root exudates were collected in situ in monospecific planted plots. The phytochemical analysis of these exudates and of several of their corresponding root extracts was achieved using UHPLC/DAD/ESI-QTOF and allowed the identification of diverse secondary metabolites belonging to the flavonoid family. Our results show that (i) the distinct exudation patterns observed are related to distinct root morphologies, and this was associated with a shift in the root flavonoid content, (ii) a root extract representative of the diverse compounds detected in roots showed a significant and selective metabolic inhibition of isolated denitrifiers in vitro, and (iii) in soil plots the abundance of nirK-type denitrifiers was negatively affected in rhizosphere soil compared to bulk. Altogether this led us to formulate hypothesis concerning the ecological role of the identified compounds in relation to N-acquisition strategy of this species.</AbstractText><CopyrightInformation>Copyright © 2013 Elsevier Masson SAS. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Michalet</LastName><ForeName>Serge</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Université Lyon1, CNRS, UMR5557, INRA, USC1364, Ecologie Microbienne, Centre d'Etude des Substances Naturelles, Villeurbanne F-69622, France; Université Lyon1, CNRS, UMR5557, INRA, USC1364, Ecologie Microbienne, Groupes Fonctionnels Microbiens et Cycle de l'Azote, Villeurbanne F-69622, France. Electronic address: sergemichalet@yahoo.fr.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Rohr</LastName><ForeName>Julien</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Warshan</LastName><ForeName>Denis</ForeName><Initials>D</Initials></Author><Author ValidYN="Y"><LastName>Bardon</LastName><ForeName>Clément</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Roggy</LastName><ForeName>Jean-Christophe</ForeName><Initials>JC</Initials></Author><Author ValidYN="Y"><LastName>Domenach</LastName><ForeName>Anne-Marie</ForeName><Initials>AM</Initials></Author><Author ValidYN="Y"><LastName>Czarnes</LastName><ForeName>Sonia</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Pommier</LastName><ForeName>Thomas</ForeName><Initials>T</Initials></Author><Author ValidYN="Y"><LastName>Combourieu</LastName><ForeName>Bruno</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Guillaumaud</LastName><ForeName>Nadine</ForeName><Initials>N</Initials></Author><Author ValidYN="Y"><LastName>Bellvert</LastName><ForeName>Floriant</ForeName><Initials>F</Initials></Author><Author ValidYN="Y"><LastName>Comte</LastName><ForeName>Gilles</ForeName><Initials>G</Initials></Author><Author ValidYN="Y"><LastName>Poly</LastName><ForeName>Franck</ForeName><Initials>F</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>2013</Year><Month>05</Month><Day>16</Day></ArticleDate></Article><MedlineJournalInfo><Country>France</Country><MedlineTA>Plant Physiol Biochem</MedlineTA><NlmUniqueID>9882449</NlmUniqueID><ISSNLinking>0981-9428</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D053147">Plant Exudates</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D009584" MajorTopicYN="N">Nitrogen</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D053147" MajorTopicYN="N">Plant Exudates</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Chemical ecology</Keyword><Keyword MajorTopicYN="N">Denitrification</Keyword><Keyword MajorTopicYN="N">Eperua falcata</Keyword><Keyword MajorTopicYN="N">Metabolic profiling</Keyword><Keyword MajorTopicYN="N">Mycorrhizae</Keyword><Keyword MajorTopicYN="N">Plant–microbes interactions</Keyword><Keyword MajorTopicYN="N">Root exudates</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2012</Year><Month>11</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2013</Year><Month>05</Month><Day>06</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>6</Month><Day>4</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2013</Year><Month>6</Month><Day>4</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>6</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">23727287</ArticleId><ArticleId IdType="pii">S0981-9428(13)00168-X</ArticleId><ArticleId IdType="doi">10.1016/j.plaphy.2013.05.003</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>France</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rhône-Alpes</li></region></list><tree><noCountry><name sortKey="Bardon, Clement" sort="Bardon, Clement" uniqKey="Bardon C" first="Clément" last="Bardon">Clément Bardon</name><name sortKey="Bellvert, Floriant" sort="Bellvert, Floriant" uniqKey="Bellvert F" first="Floriant" last="Bellvert">Floriant Bellvert</name><name sortKey="Combourieu, Bruno" sort="Combourieu, Bruno" uniqKey="Combourieu B" first="Bruno" last="Combourieu">Bruno Combourieu</name><name sortKey="Comte, Gilles" sort="Comte, Gilles" uniqKey="Comte G" first="Gilles" last="Comte">Gilles Comte</name><name sortKey="Czarnes, Sonia" sort="Czarnes, Sonia" uniqKey="Czarnes S" first="Sonia" last="Czarnes">Sonia Czarnes</name><name sortKey="Domenach, Anne Marie" sort="Domenach, Anne Marie" uniqKey="Domenach A" first="Anne-Marie" last="Domenach">Anne-Marie Domenach</name><name sortKey="Guillaumaud, Nadine" sort="Guillaumaud, Nadine" uniqKey="Guillaumaud N" first="Nadine" last="Guillaumaud">Nadine Guillaumaud</name><name sortKey="Poly, Franck" sort="Poly, Franck" uniqKey="Poly F" first="Franck" last="Poly">Franck Poly</name><name sortKey="Pommier, Thomas" sort="Pommier, Thomas" uniqKey="Pommier T" first="Thomas" last="Pommier">Thomas Pommier</name><name sortKey="Roggy, Jean Christophe" sort="Roggy, Jean Christophe" uniqKey="Roggy J" first="Jean-Christophe" last="Roggy">Jean-Christophe Roggy</name><name sortKey="Rohr, Julien" sort="Rohr, Julien" uniqKey="Rohr J" first="Julien" last="Rohr">Julien Rohr</name><name sortKey="Warshan, Denis" sort="Warshan, Denis" uniqKey="Warshan D" first="Denis" last="Warshan">Denis Warshan</name></noCountry><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Michalet, Serge" sort="Michalet, Serge" uniqKey="Michalet S" first="Serge" last="Michalet">Serge Michalet</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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