Arbuscular mycorrhizas contribute to phytostabilization of uranium in uranium mining tailings.
Identifieur interne : 002D82 ( Main/Exploration ); précédent : 002D81; suivant : 002D83Arbuscular mycorrhizas contribute to phytostabilization of uranium in uranium mining tailings.
Auteurs : Baodong Chen [République populaire de Chine] ; Per Roos ; Yong-Guan Zhu ; Iver JakobsenSource :
- Journal of environmental radioactivity [ 0265-931X ] ; 2008.
Descripteurs français
- KwdFr :
- Biomasse (MeSH), Lolium (croissance et développement), Lolium (microbiologie), Lolium (métabolisme), Medicago (croissance et développement), Medicago (microbiologie), Medicago (métabolisme), Microbiologie du sol (MeSH), Mine (MeSH), Mycorhizes (physiologie), Racines de plante (microbiologie), Uranium (métabolisme).
- MESH :
- croissance et développement : Lolium, Medicago.
- microbiologie : Lolium, Medicago, Racines de plante.
- métabolisme : Lolium, Medicago, Uranium.
- physiologie : Mycorhizes.
- Biomasse, Microbiologie du sol, Mine.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Uranium.
- growth & development : Lolium, Medicago.
- metabolism : Lolium, Medicago.
- microbiology : Lolium, Medicago, Plant Roots.
- physiology : Mycorrhizae.
- Biomass, Mining, Soil Microbiology.
Abstract
Uranium (U) tailings pose environmental risks and call for proper remediation. In this paper medic and ryegrass plants were used as host plants to examine whether inoculation with an AM fungus, Glomus intraradices, would help phytostabilization of U tailings. The need of amending with uncontaminated soil for supporting plant survival was also examined by mixing soil with U tailing at different mixing ratios. Soil amendment increased plant growth and P uptake. Ryegrass produced a more extensive root system and a greater biomass than medic plants at all mixing ratios. Medic roots were extensively colonized by G. intraradices whereas ryegrass were more sparsely colonized. Plant growth was not improved by mycorrhizas, which, however, improved P nutrition of medic plants. Medic plants contained higher U concentrations and showed higher specific U uptake efficiency compared to ryegrass. In the presence of U tailing, most U had been retained in plant roots, and this distribution pattern was further enhanced by mycorrhizal colonization. The results suggest a role for AM fungi in phytostabilization of U tailings.
DOI: 10.1016/j.jenvrad.2007.10.007
PubMed: 18061321
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<author><name sortKey="Chen, Baodong" sort="Chen, Baodong" uniqKey="Chen B" first="Baodong" last="Chen">Baodong Chen</name>
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<wicri:regionArea>Department of Soil Environmental Science, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085</wicri:regionArea>
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<author><name sortKey="Roos, Per" sort="Roos, Per" uniqKey="Roos P" first="Per" last="Roos">Per Roos</name>
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<author><name sortKey="Zhu, Yong Guan" sort="Zhu, Yong Guan" uniqKey="Zhu Y" first="Yong-Guan" last="Zhu">Yong-Guan Zhu</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomass (MeSH)</term>
<term>Lolium (growth & development)</term>
<term>Lolium (metabolism)</term>
<term>Lolium (microbiology)</term>
<term>Medicago (growth & development)</term>
<term>Medicago (metabolism)</term>
<term>Medicago (microbiology)</term>
<term>Mining (MeSH)</term>
<term>Mycorrhizae (physiology)</term>
<term>Plant Roots (microbiology)</term>
<term>Soil Microbiology (MeSH)</term>
<term>Uranium (metabolism)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Biomasse (MeSH)</term>
<term>Lolium (croissance et développement)</term>
<term>Lolium (microbiologie)</term>
<term>Lolium (métabolisme)</term>
<term>Medicago (croissance et développement)</term>
<term>Medicago (microbiologie)</term>
<term>Medicago (métabolisme)</term>
<term>Microbiologie du sol (MeSH)</term>
<term>Mine (MeSH)</term>
<term>Mycorhizes (physiologie)</term>
<term>Racines de plante (microbiologie)</term>
<term>Uranium (métabolisme)</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Uranium</term>
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<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Lolium</term>
<term>Medicago</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Lolium</term>
<term>Medicago</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Lolium</term>
<term>Medicago</term>
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<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Lolium</term>
<term>Medicago</term>
<term>Racines de plante</term>
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<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Lolium</term>
<term>Medicago</term>
<term>Plant Roots</term>
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<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Lolium</term>
<term>Medicago</term>
<term>Uranium</term>
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<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Mycorhizes</term>
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<keywords scheme="MESH" xml:lang="en"><term>Biomass</term>
<term>Mining</term>
<term>Soil Microbiology</term>
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<keywords scheme="MESH" xml:lang="fr"><term>Biomasse</term>
<term>Microbiologie du sol</term>
<term>Mine</term>
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<front><div type="abstract" xml:lang="en">Uranium (U) tailings pose environmental risks and call for proper remediation. In this paper medic and ryegrass plants were used as host plants to examine whether inoculation with an AM fungus, Glomus intraradices, would help phytostabilization of U tailings. The need of amending with uncontaminated soil for supporting plant survival was also examined by mixing soil with U tailing at different mixing ratios. Soil amendment increased plant growth and P uptake. Ryegrass produced a more extensive root system and a greater biomass than medic plants at all mixing ratios. Medic roots were extensively colonized by G. intraradices whereas ryegrass were more sparsely colonized. Plant growth was not improved by mycorrhizas, which, however, improved P nutrition of medic plants. Medic plants contained higher U concentrations and showed higher specific U uptake efficiency compared to ryegrass. In the presence of U tailing, most U had been retained in plant roots, and this distribution pattern was further enhanced by mycorrhizal colonization. The results suggest a role for AM fungi in phytostabilization of U tailings.</div>
</front>
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<Title>Journal of environmental radioactivity</Title>
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<Abstract><AbstractText>Uranium (U) tailings pose environmental risks and call for proper remediation. In this paper medic and ryegrass plants were used as host plants to examine whether inoculation with an AM fungus, Glomus intraradices, would help phytostabilization of U tailings. The need of amending with uncontaminated soil for supporting plant survival was also examined by mixing soil with U tailing at different mixing ratios. Soil amendment increased plant growth and P uptake. Ryegrass produced a more extensive root system and a greater biomass than medic plants at all mixing ratios. Medic roots were extensively colonized by G. intraradices whereas ryegrass were more sparsely colonized. Plant growth was not improved by mycorrhizas, which, however, improved P nutrition of medic plants. Medic plants contained higher U concentrations and showed higher specific U uptake efficiency compared to ryegrass. In the presence of U tailing, most U had been retained in plant roots, and this distribution pattern was further enhanced by mycorrhizal colonization. The results suggest a role for AM fungi in phytostabilization of U tailings.</AbstractText>
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