Arbuscular mycorrhiza reduces phytoextraction of uranium, thorium and other elements from phosphate rock.
Identifieur interne : 002D84 ( Main/Corpus ); précédent : 002D83; suivant : 002D85Arbuscular mycorrhiza reduces phytoextraction of uranium, thorium and other elements from phosphate rock.
Auteurs : Per Roos ; Iver JakobsenSource :
- Journal of environmental radioactivity [ 0265-931X ] ; 2008.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Phosphates, Thorium, Uranium.
- metabolism : Plants.
- physiology : Mycorrhizae.
- Geological Phenomena, Geology.
Abstract
Uptake of metals from uranium-rich phosphate rock was studied in Medicago truncatula plants grown in symbiosis with the arbuscular mycorrhizal fungus Glomus intraradices or in the absence of mycorrhizas. Shoot concentrations of uranium and thorium were lower in mycorrhizal than in non-mycorrhizal plants and root-to-shoot ratio of most metals was increased by mycorrhizas. This protective role of mycorrhizas was observed even at very high supplies of phosphate rock. In contrast, phosphorus uptake was similar at all levels of phosphate rock, suggesting that the P was unavailable to the plant-fungus uptake systems. The results support the role of arbuscular mycorrhiza as being an important component in phytostabilization of uranium. This is the first study to report on mycorrhizal effect and the uptake and root-to-shoot transfer of thorium from phosphate rock.
DOI: 10.1016/j.jenvrad.2007.10.018
PubMed: 18069100
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pubmed:18069100Le document en format XML
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Shoot concentrations of uranium and thorium were lower in mycorrhizal than in non-mycorrhizal plants and root-to-shoot ratio of most metals was increased by mycorrhizas. This protective role of mycorrhizas was observed even at very high supplies of phosphate rock. In contrast, phosphorus uptake was similar at all levels of phosphate rock, suggesting that the P was unavailable to the plant-fungus uptake systems. The results support the role of arbuscular mycorrhiza as being an important component in phytostabilization of uranium. This is the first study to report on mycorrhizal effect and the uptake and root-to-shoot transfer of thorium from phosphate rock.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">18069100</PMID><DateCompleted><Year>2008</Year><Month>09</Month><Day>18</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0265-931X</ISSN><JournalIssue CitedMedium="Print"><Volume>99</Volume><Issue>5</Issue><PubDate><Year>2008</Year><Month>May</Month></PubDate></JournalIssue><Title>Journal of environmental radioactivity</Title><ISOAbbreviation>J Environ Radioact</ISOAbbreviation></Journal><ArticleTitle>Arbuscular mycorrhiza reduces phytoextraction of uranium, thorium and other elements from phosphate rock.</ArticleTitle><Pagination><MedlinePgn>811-9</MedlinePgn></Pagination><Abstract><AbstractText>Uptake of metals from uranium-rich phosphate rock was studied in Medicago truncatula plants grown in symbiosis with the arbuscular mycorrhizal fungus Glomus intraradices or in the absence of mycorrhizas. Shoot concentrations of uranium and thorium were lower in mycorrhizal than in non-mycorrhizal plants and root-to-shoot ratio of most metals was increased by mycorrhizas. This protective role of mycorrhizas was observed even at very high supplies of phosphate rock. In contrast, phosphorus uptake was similar at all levels of phosphate rock, suggesting that the P was unavailable to the plant-fungus uptake systems. The results support the role of arbuscular mycorrhiza as being an important component in phytostabilization of uranium. This is the first study to report on mycorrhizal effect and the uptake and root-to-shoot transfer of thorium from phosphate rock.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Roos</LastName><ForeName>Per</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>Radiation Research Department, Risø National Laboratory, Technical University of Denmark, DK-4000 Roskilde, Denmark.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Jakobsen</LastName><ForeName>Iver</ForeName><Initials>I</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>2007</Year><Month>12</Month><Day>11</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Environ Radioact</MedlineTA><NlmUniqueID>8508119</NlmUniqueID><ISSNLinking>0265-931X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010710">Phosphates</NameOfSubstance></Chemical><Chemical><RegistryNumber>4OC371KSTK</RegistryNumber><NameOfSubstance UI="D014501">Uranium</NameOfSubstance></Chemical><Chemical><RegistryNumber>60YU5MIG9W</RegistryNumber><NameOfSubstance UI="D013910">Thorium</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D055593" MajorTopicYN="N">Geological Phenomena</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005844" MajorTopicYN="Y">Geology</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010710" MajorTopicYN="N">Phosphates</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010944" MajorTopicYN="N">Plants</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013910" MajorTopicYN="N">Thorium</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014501" MajorTopicYN="N">Uranium</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="accepted"><Year>2007</Year><Month>10</Month><Day>18</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>12</Month><Day>11</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2008</Year><Month>9</Month><Day>19</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2007</Year><Month>12</Month><Day>11</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">18069100</ArticleId><ArticleId IdType="pii">S0265-931X(07)00259-7</ArticleId><ArticleId IdType="doi">10.1016/j.jenvrad.2007.10.018</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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