Impact of arbuscular mycorrhizal fungi on uranium accumulation by plants

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Abstract

Contamination by uranium (U) occurs principally at U mining and processing sites. Uranium can have tremendous environmental consequences, as it is highly toxic to a broad range of organisms and can be dispersed in both terrestrial and aquatic environments. Remediation strategies of U-contaminated soils have included physical and chemical procedures, which may be beneficial, but are costly and can lead to further environmental damage. Phytoremediation has been proposed as a promising alternative, which relies on the capacity of plants and their associated microorganisms to stabilize or extract contaminants from soils. In this paper, we review the role of a group of plant symbiotic fungi, i.e. arbuscular mycorrhizal fungi, which constitute an essential link between the soil and the roots. These fungi participate in U immobilization in soils and within plant roots and they can reduce root-to-shoot translocation of U. However, there is a need to evaluate these observations in terms of their importance for phytostabilization strategies.

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Original languageEnglish
Pages (from-to)775-784
JournalJournal of environmental radioactivity
Volume99
Issue number5
DOIs
Publication statusPublished - Apr 2008

Keywords

  • Arbuscular mycorrhizal fungi, Uranium, Phytoremediation, Transport, Immobilization

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