Fractionation and assimilation of Mg isotopes by fungi is species dependent.
Identifieur interne : 001150 ( Main/Exploration ); précédent : 001149; suivant : 001151Fractionation and assimilation of Mg isotopes by fungi is species dependent.
Auteurs : Zaenab A. Fahad [Suède] ; Emile B. Bolou-Bi [Suède, France] ; Stephan J. Köhler [Suède] ; Roger D. Finlay [Suède] ; Shahid Mahmood [Suède]Source :
- Environmental microbiology reports [ 1758-2229 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
- microbiologie : Plantes.
- métabolisme : Magnésium, Mycorhizes.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Magnesium.
- metabolism : Mycorrhizae.
- microbiology : Plants.
Abstract
Symbiotic ectomycorrhizal fungi mobilize nutrients from both organic and inorganic substrates and supply them to their host plants. Their role in mobilizing base cations and phosphorus from mineral substrates through weathering has received increasing attention in recent years but the processes involved remain to be elucidated. We grew selected ectomycorrhizal and nonmycorrhizal fungi in axenic systems containing mineral and organic substrates and examined their capacity to fractionate and assimilate stable isotopes of magnesium. The mycorrhizal fungi were significantly depleted in heavy isotopes with the lowest Δ26 Mg values (the difference between δ26 Mg in fungal tissue and δ26 Mg in the substrate) compared with nonmycorrhizal fungi, when grown on mineral substrates containing granite particles. The ectomycorrhizal fungi accumulated significantly higher concentrations of Mg, K and P than the nonmycorrhizal fungi. There was a highly significant statistical relationship between δ26 Mg tissue signature and mycelial concentration of Mg, with a clear separation between most ectomycorrhizal fungi and the nonmycorrhizal fungi. These results are consistent with the idea that ectomycorrhizal fungi have evolved efficient mechanisms to mobilize, transport and store Mg within their mycelia.
DOI: 10.1111/1758-2229.12459
PubMed: 27588362
Affiliations:
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Fahad</name><affiliation wicri:level="1"><nlm:affiliation>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07</wicri:regionArea><wicri:noRegion>750 07</wicri:noRegion></affiliation></author><author><name sortKey="Bolou Bi, Emile B" sort="Bolou Bi, Emile B" uniqKey="Bolou Bi E" first="Emile B" last="Bolou-Bi">Emile B. Bolou-Bi</name><affiliation wicri:level="4"><nlm:affiliation>Department of Earth Sciences, Uppsala University, Uppsala, SE, 752 36, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Earth Sciences, Uppsala University, Uppsala, SE, 752 36</wicri:regionArea><orgName type="university">Université d'Uppsala</orgName><placeName><settlement type="city">Uppsala</settlement><region nuts="1">Svealand</region><region nuts="1">East Middle Sweden</region></placeName></affiliation><affiliation wicri:level="1"><nlm:affiliation>Institut d'Ecologie et des Sciences de l'Environnement IEES Paris, équipe Géomicrobiologie des sols et des eaux, Université de Paris-Est Créteil Val de Marne, Créteil Cedex, FR, 94 010, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut d'Ecologie et des Sciences de l'Environnement IEES Paris, équipe Géomicrobiologie des sols et des eaux, Université de Paris-Est Créteil Val de Marne, Créteil Cedex, FR, 94 010</wicri:regionArea><wicri:noRegion>94 010</wicri:noRegion><wicri:noRegion>94 010</wicri:noRegion></affiliation></author><author><name sortKey="Kohler, Stephan J" sort="Kohler, Stephan J" uniqKey="Kohler S" first="Stephan J" last="Köhler">Stephan J. Köhler</name><affiliation wicri:level="1"><nlm:affiliation>Department of Aquatic Sciences and Assessment, Soil-Water-Environment Center, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Aquatic Sciences and Assessment, Soil-Water-Environment Center, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07</wicri:regionArea><wicri:noRegion>750 07</wicri:noRegion></affiliation></author><author><name sortKey="Finlay, Roger D" sort="Finlay, Roger D" uniqKey="Finlay R" first="Roger D" last="Finlay">Roger D. Finlay</name><affiliation wicri:level="1"><nlm:affiliation>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07</wicri:regionArea><wicri:noRegion>750 07</wicri:noRegion></affiliation></author><author><name sortKey="Mahmood, Shahid" sort="Mahmood, Shahid" uniqKey="Mahmood S" first="Shahid" last="Mahmood">Shahid Mahmood</name><affiliation wicri:level="1"><nlm:affiliation>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07</wicri:regionArea><wicri:noRegion>750 07</wicri:noRegion></affiliation></author></analytic><series><title level="j">Environmental microbiology reports</title><idno type="eISSN">1758-2229</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Magnesium (metabolism)</term><term>Mycorrhizae (metabolism)</term><term>Plants (microbiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Magnésium (métabolisme)</term><term>Mycorhizes (métabolisme)</term><term>Plantes (microbiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Magnesium</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Mycorrhizae</term></keywords><keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Plantes</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Plants</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Magnésium</term><term>Mycorhizes</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Symbiotic ectomycorrhizal fungi mobilize nutrients from both organic and inorganic substrates and supply them to their host plants. Their role in mobilizing base cations and phosphorus from mineral substrates through weathering has received increasing attention in recent years but the processes involved remain to be elucidated. We grew selected ectomycorrhizal and nonmycorrhizal fungi in axenic systems containing mineral and organic substrates and examined their capacity to fractionate and assimilate stable isotopes of magnesium. The mycorrhizal fungi were significantly depleted in heavy isotopes with the lowest Δ<sup>26</sup> Mg values (the difference between δ<sup>26</sup> Mg in fungal tissue and δ<sup>26</sup> Mg in the substrate) compared with nonmycorrhizal fungi, when grown on mineral substrates containing granite particles. The ectomycorrhizal fungi accumulated significantly higher concentrations of Mg, K and P than the nonmycorrhizal fungi. There was a highly significant statistical relationship between δ<sup>26</sup> Mg tissue signature and mycelial concentration of Mg, with a clear separation between most ectomycorrhizal fungi and the nonmycorrhizal fungi. These results are consistent with the idea that ectomycorrhizal fungi have evolved efficient mechanisms to mobilize, transport and store Mg within their mycelia.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">27588362</PMID><DateCompleted><Year>2017</Year><Month>08</Month><Day>29</Day></DateCompleted><DateRevised><Year>2017</Year><Month>11</Month><Day>26</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1758-2229</ISSN><JournalIssue CitedMedium="Internet"><Volume>8</Volume><Issue>6</Issue><PubDate><Year>2016</Year><Month>12</Month></PubDate></JournalIssue><Title>Environmental microbiology reports</Title><ISOAbbreviation>Environ Microbiol Rep</ISOAbbreviation></Journal><ArticleTitle>Fractionation and assimilation of Mg isotopes by fungi is species dependent.</ArticleTitle><Pagination><MedlinePgn>956-965</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/1758-2229.12459</ELocationID><Abstract><AbstractText>Symbiotic ectomycorrhizal fungi mobilize nutrients from both organic and inorganic substrates and supply them to their host plants. Their role in mobilizing base cations and phosphorus from mineral substrates through weathering has received increasing attention in recent years but the processes involved remain to be elucidated. We grew selected ectomycorrhizal and nonmycorrhizal fungi in axenic systems containing mineral and organic substrates and examined their capacity to fractionate and assimilate stable isotopes of magnesium. The mycorrhizal fungi were significantly depleted in heavy isotopes with the lowest Δ<sup>26</sup> Mg values (the difference between δ<sup>26</sup> Mg in fungal tissue and δ<sup>26</sup> Mg in the substrate) compared with nonmycorrhizal fungi, when grown on mineral substrates containing granite particles. The ectomycorrhizal fungi accumulated significantly higher concentrations of Mg, K and P than the nonmycorrhizal fungi. There was a highly significant statistical relationship between δ<sup>26</sup> Mg tissue signature and mycelial concentration of Mg, with a clear separation between most ectomycorrhizal fungi and the nonmycorrhizal fungi. These results are consistent with the idea that ectomycorrhizal fungi have evolved efficient mechanisms to mobilize, transport and store Mg within their mycelia.</AbstractText><CopyrightInformation>© 2016 Society for Applied Microbiology and John Wiley & Sons Ltd.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Fahad</LastName><ForeName>Zaenab A</ForeName><Initials>ZA</Initials><AffiliationInfo><Affiliation>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bolou-Bi</LastName><ForeName>Emile B</ForeName><Initials>EB</Initials><AffiliationInfo><Affiliation>Department of Earth Sciences, Uppsala University, Uppsala, SE, 752 36, Sweden.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Institut d'Ecologie et des Sciences de l'Environnement IEES Paris, équipe Géomicrobiologie des sols et des eaux, Université de Paris-Est Créteil Val de Marne, Créteil Cedex, FR, 94 010, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Köhler</LastName><ForeName>Stephan J</ForeName><Initials>SJ</Initials><AffiliationInfo><Affiliation>Department of Aquatic Sciences and Assessment, Soil-Water-Environment Center, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Finlay</LastName><ForeName>Roger D</ForeName><Initials>RD</Initials><AffiliationInfo><Affiliation>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Mahmood</LastName><ForeName>Shahid</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, SE, 750 07, Sweden.</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>2016</Year><Month>09</Month><Day>21</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Environ Microbiol Rep</MedlineTA><NlmUniqueID>101499207</NlmUniqueID><ISSNLinking>1758-2229</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>I38ZP9992A</RegistryNumber><NameOfSubstance UI="D008274">Magnesium</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D008274" MajorTopicYN="N">Magnesium</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010944" MajorTopicYN="N">Plants</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>07</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2016</Year><Month>08</Month><Day>18</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2016</Year><Month>08</Month><Day>25</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2016</Year><Month>10</Month><Day>26</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>8</Month><Day>30</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2016</Year><Month>9</Month><Day>3</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">27588362</ArticleId><ArticleId IdType="doi">10.1111/1758-2229.12459</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>France</li><li>Suède</li></country><region><li>East Middle Sweden</li><li>Svealand</li></region><settlement><li>Uppsala</li></settlement><orgName><li>Université d'Uppsala</li></orgName></list><tree><country name="Suède"><noRegion><name sortKey="Fahad, Zaenab A" sort="Fahad, Zaenab A" uniqKey="Fahad Z" first="Zaenab A" last="Fahad">Zaenab A. Fahad</name></noRegion><name sortKey="Bolou Bi, Emile B" sort="Bolou Bi, Emile B" uniqKey="Bolou Bi E" first="Emile B" last="Bolou-Bi">Emile B. Bolou-Bi</name><name sortKey="Finlay, Roger D" sort="Finlay, Roger D" uniqKey="Finlay R" first="Roger D" last="Finlay">Roger D. Finlay</name><name sortKey="Kohler, Stephan J" sort="Kohler, Stephan J" uniqKey="Kohler S" first="Stephan J" last="Köhler">Stephan J. Köhler</name><name sortKey="Mahmood, Shahid" sort="Mahmood, Shahid" uniqKey="Mahmood S" first="Shahid" last="Mahmood">Shahid Mahmood</name></country><country name="France"><noRegion><name sortKey="Bolou Bi, Emile B" sort="Bolou Bi, Emile B" uniqKey="Bolou Bi E" first="Emile B" last="Bolou-Bi">Emile B. Bolou-Bi</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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