An overview of BORIS: Bioavailability of Radionuclides in Soils

Tamponnet, C.; Martin-Garin, A.; Gonze, M.-A.; Parekh, Nisha R.; Vallejo, V. Ramón; Sauras-Yera, Teresa; Casadesús, Jaume; Plassard, Claude; Staunton, Siobhán; Nordén, Maria; Ávila, R.; Shaw, G.

doi:10.1016/j.jenvrad.2007.10.011

Cited by 49 publications

(32 citation statements)

References 53 publications

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“…Information recently obtained from the genomes of the ECM fungi Laccaria bicolor (Martin et al 2008), Tuber melanosporum (Martin et al 2010), and many others (www.genome.jgi. doe.gov) through BLAST search analyses against the protein sequences of K + transporters has allowed identification of homologous putative K + transporters operating in ECM fungi that are similar to the TRK transporters and channels described previously in fungi (Ko and Gaber 1991) and to TOK channels (Ketchum et al 1995), HAK transporters (Bañuelos et al 1995), and animal Shaker-like channels (SKC) (Papazian et al 1987;Jan and Jan 1997).…”

Section: Ecm Symbiosismentioning

confidence: 99%

“…Because of the long half-lives of these two isotopes (2.1 years for 134Cs and 30.2 years for 137Cs) and the fact that they show biogeochemical behavior similar to that of potassium, which is a major nutrient, radiocesium is considered a threatening radiopollutant present in the environment. In the terrestrial ecosystems, the similarity between the biogeochemical routes of K and radiocesium implies a crucial hazard concerning radiocesium contamination of aboveground vegetation, as the mechanisms of root acquisition appear to be very closely related for the two elements (White and Broadley 2000;Tamponnet et al 2008;Dupré de Boulois et al 2008). ECM fungi have been identified as greater contributors to radiocesium immobilization in the soils.…”

Section: Protection Against Radiocesium Pollutionmentioning

confidence: 99%

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Mycorrhizal Fungi: Role in the Solubilization of Potassium

Núñez

Benito²,

Berrocal-Lobo

et al. 2016

Potassium Solubilizing Microorganisms for Sustainable Agriculture

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Mycorrhizae have been key living microorganisms in the plant colonization of terrestrial environments. The crucial roles of mycorrhizae are to provide plant nutrition and stress resistance for plant growth and development. Potassium (K + ) shows important functions in different metabolic processes and physiological functions and is the third crucial component of most crop fertilizers (after nitrogen and phosphorus). This chapter discusses the current state of knowledge about the role of mycorrhizal symbiosis in the release, solubilization, and transport of potassium from the soil to plants. Improved metagenomic analyses and the availability of transcriptome data provide promising tools for studying fungal weathering and the mycorrhizal contributions to K + solubilization and K + transport to plants. Additionally, some benefits of mycorrhizal potassium uptake in plants are described.

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Section: Ecm Symbiosismentioning

confidence: 99%

Section: Protection Against Radiocesium Pollutionmentioning

confidence: 99%

Mycorrhizal Fungi: Role in the Solubilization of Potassium

Núñez

Benito²,

Berrocal-Lobo

et al. 2016

Potassium Solubilizing Microorganisms for Sustainable Agriculture

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“…Ces éléments grossiers qui sont présents dès la surface, libèrent une quantité importante de calcium qui a pour effet de ralentir la minéralisation de la matière organique (mélanisation). De nombreux auteurs (Staunton, 1997 ;Tamponnet et al, 2002Tamponnet et al, , 2008 ont rapporté ce type de relation et ont montré que la teneur en matière organique du sol conditionne la biodisponibilité des radionucléides métalliques. Il existe également une liaison statistiquement significative (test de Spearman, r = 0,398, p < 10 -5 ) entre l'altitude et la teneur en matière organique.…”

Section: Liaison Entre L'activité Surfacique Et La Teneur En Matière unclassified

Variabilité spatiale des activités en césium-137 dans les sols d’un bassin versant du massif du Jura : étendue et principales sources de variation

et al. 2011

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Spatial variability of caesium-137 activities in soils in the Jura mountains.275 soil samples were taken in the catchment area of the upper part of the Doubs river located in the Jura mountains according to a sampling strategy designed to evaluate the extent of the spatial variability of 137 Cs activities and to identify its main sources. 137 Cs activities ranged between about 1 000 and 12 000 Bq.m -2 with an average of approximately 3 600 Bq.m -2 . The spatial variability of the contamination is high: 137 Cs activity shows statistically significant links with altitude, soil organic matter and land cover, whereas the other studied parameters, i.e. soil type and topographic position, do not constitute significant sources of variation. These results are discussed in terms of evaluation of the radioactive contamination on a regional scale. They show that to be satisfactory, a sampling strategy must necessarily take into account the various types of land cover.

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“…For example, microorganisms can alter the soil pH and can act as potential ligands in the form of low-molecular-weight organic compounds with their exudates. In addition, Cs and Sr may directly attach to the cell surface or be actively taken up from the soil solution [13]- [15]. The source of Cs and Sr in Fig.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Soil Fungi on the Sorption of Cesium and Strontium in the Soil Organic Layer

Seeprasert¹,

Yoneda²,

Shimada³

2016

IJESD

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Abstract-Large quantities of cesium (Cs) and strontium (Sr) released from the Fukushima accident in 2011 are still present in terrestrial ecosystems. This study addressed the contribution of microbial activity to the sorption of Cs and Sr into organic material, which is necessary for comparing non-sterile systems with sterile systems. The aim was to determine the contribution of microbial activity to the sorption of Cs and Sr in organic material. The complete potential of fungi to cycle Cs and Sr in the organic soil system was assessed in a series of experiments. Organic material was prepared under laboratory conditions from leaf litter to minimize the interference from competition by clay minerals. The results of an experimental system comparing biotic and abiotic systems conclusively demonstrate that soil fungi play an important role in the sorption and retention of Cs and Sr. In all experiments, the retention of both elements was greater in biotic systems than in abiotic systems. Soil and saprotrophic fungi make an important contribution to the sorption of Cs and Sr in organic systems and may partly account for the strong, irreversible binding observed in biotic systems. The single strains of Fusarium sp., Trichoderma sp., and Aspergillus sp. showed increased amounts of Cs and Sr in a fixed form compared with those found in a biotic system. This finding may partly account for the high level of retention of Cs and Sr in upland organic soil, which is not satisfactorily accounted by the physicochemical process alone. It may also partly account for the strong, irreversible binding observed in biotic systems.

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An overview of BORIS: Bioavailability of Radionuclides in Soils

Cited by 49 publications

References 53 publications

Mycorrhizal Fungi: Role in the Solubilization of Potassium

Mycorrhizal Fungi: Role in the Solubilization of Potassium

Variabilité spatiale des activités en césium-137 dans les sols d’un bassin versant du massif du Jura : étendue et principales sources de variation

The Influence of Soil Fungi on the Sorption of Cesium and Strontium in the Soil Organic Layer

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