Record ID No. |
2653 |
Author(s) |
Gyuricza V., Declerck S., Boulois H D de. , 2010 |
Affiliation |
Universite catholique de Louvain, Earth and Life Institute (ELI), Laboratoire de Mycologie, Croix du Sud 3, 1348 Louvain-la-Neuve, Belgium. herve.dupre@uclouvain.be |
Title |
Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula |
Source. Vol.(no):Page |
Journal of Environmental Radioactivity. 101(8): 591-596p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Soil toxicity |
Host |
Medicago truncatula |
Organism |
Arbuscular Mycorrhiza (AM) |
Country |
UK., Northern Europe |
Abstracts |
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. |