MycorrhizaeV1, Main, Curation, bibRecord, 002698

Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula.

Identifieur interne : 002698 ( Main/Curation ); précédent : 002697; suivant : 002699

Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula.

Auteurs : Veronika Gyuricza [Belgique] ; Stéphane Declerck ; Hervé Dupré De Boulois

Source :

Journal of environmental radioactivity [ 1879-1700 ] ; 2010.

RBID : pubmed:20378216

Descripteurs français

KwdFr :
- Dépollution biologique de l'environnement (MeSH), Medicago truncatula (microbiologie), Medicago truncatula (métabolisme), Mycorhizes (croissance et développement), Mycorhizes (physiologie), Potassium (métabolisme), Pousses de plante (métabolisme), Racines de plante (métabolisme), Radio-isotopes du césium (métabolisme).
MESH :
- croissance et développement : Mycorhizes.
- microbiologie : Medicago truncatula.
- métabolisme : Medicago truncatula, Potassium, Pousses de plante, Racines de plante, Radio-isotopes du césium.
- physiologie : Mycorhizes.
- Dépollution biologique de l'environnement.

English descriptors

KwdEn :
- Biodegradation, Environmental (MeSH), Cesium Radioisotopes (metabolism), Medicago truncatula (metabolism), Medicago truncatula (microbiology), Mycorrhizae (growth & development), Mycorrhizae (physiology), Plant Roots (metabolism), Plant Shoots (metabolism), Potassium (metabolism).
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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Le 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>
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<wicri:regionArea>Université catholique de Louvain, Earth and Life Institute (ELI), Laboratoire de Mycologie, 1348 Louvain-la-Neuve</wicri:regionArea>
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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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<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>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Dépollution biologique de l'environnement (MeSH)</term>
<term>Medicago truncatula (microbiologie)</term>
<term>Medicago truncatula (métabolisme)</term>
<term>Mycorhizes (croissance et développement)</term>
<term>Mycorhizes (physiologie)</term>
<term>Potassium (métabolisme)</term>
<term>Pousses de plante (métabolisme)</term>
<term>Racines de plante (métabolisme)</term>
<term>Radio-isotopes du césium (métabolisme)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Cesium Radioisotopes</term>
<term>Potassium</term>
</keywords>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Medicago truncatula</term>
<term>Plant Roots</term>
<term>Plant Shoots</term>
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<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Medicago truncatula</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Medicago truncatula</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Medicago truncatula</term>
<term>Potassium</term>
<term>Pousses de plante</term>
<term>Racines de plante</term>
<term>Radio-isotopes du césium</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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<CopyrightInformation>Copyright 2010 Elsevier Ltd. All rights reserved.</CopyrightInformation>
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Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula.

Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula.

Source :

Descripteurs français

English descriptors

Abstract

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