SINGH, Bal Ram; GUPTA, Satish K.; AZAIZEH, Hassan; SHILEV, Stefan; SUDRE, Damien; SONG, Won Yong; MARTINOIA, Enrico; MENCH, Michel

doi:10.1002/jsfa.4355

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

SINGH, Bal Ram
Department of Plant and Environmental Sciences

GUPTA, Satish K.
Agroscope

AZAIZEH, Hassan
University of Haifa [Haifa]

Langue

Article de revue

Ce document a été publié dans

Journal of the Science of Food and Agriculture. 2011, vol. 91, n° 8, p. 1349-1366

Wiley

Résumé en anglais

Contamination of agricultural soils with trace elements (TEs) through municipal and industrial wastes, atmospheric deposition and fertilisers is a matter of great global concern. Since TE accumulation in edible plant parts depends on soil characteristics, plant genotype and agricultural practices, those soil- and plant-specific options that restrict the entry of harmful TEs into the food chain to protect human and animal health are reviewed. Soil options such as in situ stabilisation of TEs in soils, changes in physicochemical parameters, fertiliser management, element interactions and agronomic practices reduce TE uptake by food crops. Furthermore, phytoremediation and solubilisation as alternative techniques to reduce TE concentrations in soils are also discussed. Among plant options, selection of species and cultivars, metabolic processes and microbial transformations in the rhizosphere can potentially affect TE uptake and distribution in plants. For this purpose, genetic variations are exploited to select cultivars with low uptake potential, especially low-cadmium accumulator wheat and rice cultivars. The microbial reduction of elements and transformations in the rhizosphere are other key players in the cycling of TEs that may offer the basis for a wide range of innovative biotechnological processes. It is thus concluded that appropriate combination of soil- and plant-specific options can minimise TE transfer to the food chain.< Réduire

Mots clés

IMMOBILISATION

METAL TRANSPORT

MICROBIAL TRANSFORMATION

PLANT SPECIES

CONTAMINATION DES SOLS

TRANSPORT DES MÉTAUX

TRANSFORMATION MICROBIENNE

Mots clés en anglais

CULTIVARS

FOOD SAFETY

LAND CONTAMINATION

MOLECULAR PROCESS

PHYTOREMEDIATION

RHIZOSPHERE

TRACE ELEMENT

RIZ