Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula.
Identifieur interne : 002698 ( Main/Corpus ); précédent : 002697; suivant : 002699Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula.
Auteurs : Veronika Gyuricza ; Stéphane Declerck ; Hervé Dupré De BouloisSource :
- Journal of environmental radioactivity [ 1879-1700 ] ; 2010.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Cesium Radioisotopes, Potassium.
- growth & development : Mycorrhizae.
- metabolism : Medicago truncatula, Plant Roots, Plant Shoots.
- microbiology : Medicago truncatula.
- physiology : Mycorrhizae.
- Biodegradation, Environmental.
Abstract
The role of arbuscular mycorrhizal fungi (AMF) in plant radiocesium uptake and accumulation remains ambiguous. This is probably due to the presence of other soil microorganisms, the variability of soil characteristics and plant nutritional status or the availability of its chemical analogue, potassium (K). Here, we used an in vitro culture system to study the impact of increased concentration of K on radiocesium accumulation in non K-starved mycorrhizal and non-mycorrhizal Medicago truncatula plants. In the presence of AMF radiocesium uptake decreased regardless of the concentration of K, and its translocation from root to shoot was also significantly lower. Potassium also reduced the accumulation of radiocesium in plants but to a lesser extent than mycorrhization, and without any effect on translocation. These results suggest that AMF in combination with K can play a key role in reducing radiocesium uptake and its subsequent translocation to plant shoots, thereby representing good potential for improved phytomanagement of contaminated areas.
DOI: 10.1016/j.jenvrad.2010.03.004
PubMed: 20378216
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pubmed:20378216Le document en format XML
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<author><name sortKey="Gyuricza, Veronika" sort="Gyuricza, Veronika" uniqKey="Gyuricza V" first="Veronika" last="Gyuricza">Veronika Gyuricza</name>
<affiliation><nlm:affiliation>Université catholique de Louvain, Earth and Life Institute (ELI), Laboratoire de Mycologie, 1348 Louvain-la-Neuve, Belgium.</nlm:affiliation>
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<author><name sortKey="Declerck, Stephane" sort="Declerck, Stephane" uniqKey="Declerck S" first="Stéphane" last="Declerck">Stéphane Declerck</name>
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<author><name sortKey="Dupre De Boulois, Herve" sort="Dupre De Boulois, Herve" uniqKey="Dupre De Boulois H" first="Hervé" last="Dupré De Boulois">Hervé Dupré De Boulois</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula.</title>
<author><name sortKey="Gyuricza, Veronika" sort="Gyuricza, Veronika" uniqKey="Gyuricza V" first="Veronika" last="Gyuricza">Veronika Gyuricza</name>
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<author><name sortKey="Declerck, Stephane" sort="Declerck, Stephane" uniqKey="Declerck S" first="Stéphane" last="Declerck">Stéphane Declerck</name>
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<author><name sortKey="Dupre De Boulois, Herve" sort="Dupre De Boulois, Herve" uniqKey="Dupre De Boulois H" first="Hervé" last="Dupré De Boulois">Hervé Dupré De Boulois</name>
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<series><title level="j">Journal of environmental radioactivity</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biodegradation, Environmental (MeSH)</term>
<term>Cesium Radioisotopes (metabolism)</term>
<term>Medicago truncatula (metabolism)</term>
<term>Medicago truncatula (microbiology)</term>
<term>Mycorrhizae (growth & development)</term>
<term>Mycorrhizae (physiology)</term>
<term>Plant Roots (metabolism)</term>
<term>Plant Shoots (metabolism)</term>
<term>Potassium (metabolism)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Cesium Radioisotopes</term>
<term>Potassium</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Mycorrhizae</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Medicago truncatula</term>
<term>Plant Roots</term>
<term>Plant Shoots</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Medicago truncatula</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Mycorrhizae</term>
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<front><div type="abstract" xml:lang="en">The role of arbuscular mycorrhizal fungi (AMF) in plant radiocesium uptake and accumulation remains ambiguous. This is probably due to the presence of other soil microorganisms, the variability of soil characteristics and plant nutritional status or the availability of its chemical analogue, potassium (K). Here, we used an in vitro culture system to study the impact of increased concentration of K on radiocesium accumulation in non K-starved mycorrhizal and non-mycorrhizal Medicago truncatula plants. In the presence of AMF radiocesium uptake decreased regardless of the concentration of K, and its translocation from root to shoot was also significantly lower. Potassium also reduced the accumulation of radiocesium in plants but to a lesser extent than mycorrhization, and without any effect on translocation. These results suggest that AMF in combination with K can play a key role in reducing radiocesium uptake and its subsequent translocation to plant shoots, thereby representing good potential for improved phytomanagement of contaminated areas.</div>
</front>
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<Abstract><AbstractText>The role of arbuscular mycorrhizal fungi (AMF) in plant radiocesium uptake and accumulation remains ambiguous. This is probably due to the presence of other soil microorganisms, the variability of soil characteristics and plant nutritional status or the availability of its chemical analogue, potassium (K). Here, we used an in vitro culture system to study the impact of increased concentration of K on radiocesium accumulation in non K-starved mycorrhizal and non-mycorrhizal Medicago truncatula plants. In the presence of AMF radiocesium uptake decreased regardless of the concentration of K, and its translocation from root to shoot was also significantly lower. Potassium also reduced the accumulation of radiocesium in plants but to a lesser extent than mycorrhization, and without any effect on translocation. These results suggest that AMF in combination with K can play a key role in reducing radiocesium uptake and its subsequent translocation to plant shoots, thereby representing good potential for improved phytomanagement of contaminated areas.</AbstractText>
<CopyrightInformation>Copyright 2010 Elsevier Ltd. All rights reserved.</CopyrightInformation>
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<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Gyuricza</LastName>
<ForeName>Veronika</ForeName>
<Initials>V</Initials>
<AffiliationInfo><Affiliation>Université catholique de Louvain, Earth and Life Institute (ELI), Laboratoire de Mycologie, 1348 Louvain-la-Neuve, Belgium.</Affiliation>
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