Phytoremediation and Microorganisms-Assisted Phytoremediation of Mercury-Contaminated Soils: Challenges and Perspectives.
TLDR
In this paper, the potential use of transgenic plants in Hg-phytoremediation is discussed, and the beneficial interactions between plants and microorganisms (bacteria and fungi) that are Hg resistant and secrete plant growth promoting compounds are reviewed.Abstract:
Mercury (Hg) pollution is a global threat to human and environmental health because of its toxicity, mobility and long-term persistence. Although costly engineering-based technologies can be used to treat heavily Hg-contaminated areas, they are not suitable for decontaminating agricultural or extensively-polluted soils. Emerging phyto- and bioremediation strategies for decontaminating Hg-polluted soils generally involve low investment, simple operation, and in situ application, and they are less destructive for the ecosystem. Current understanding of the uptake, translocation and sequestration of Hg in plants is reviewed to highlight new avenues for exploration in phytoremediation research, and different phytoremediation strategies (phytostabilization, phytoextraction and phytovolatilization) are discussed. Research aimed at identifying suitable plant species and associated-microorganisms for use in phytoremediation of Hg-contaminated soils is also surveyed. Investigation into the potential use of transgenic plants in Hg-phytoremediation is described. Recent research on exploiting the beneficial interactions between plants and microorganisms (bacteria and fungi) that are Hg-resistant and secrete plant growth promoting compounds is reviewed. We highlight areas where more research is required into the effective use of phytoremediation on Hg-contaminated sites, and conclude that the approaches it offers provide considerable potential for the future.read more
Citations
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Molecular mechanisms underlying heavy metal uptake, translocation and tolerance in hyperaccumulators-an analysis: Heavy metal tolerance in hyperaccumulators
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Self-cementation of the alkali-activated volcanic tuff coupling with thiol-functionalized expanded perlite that enhances the solidification and stabilization of the mercury-contaminated soil
TL;DR: In this paper, the thiol-functionalized expanded perlite (thiol-Exp-p) was employed in the self-cementation of the alkali-activated volcanic tuff (VT) as both lightweight aggregate and adsorbent to enhance the S/S of the Hg-contaminated soil.
Journal ArticleDOI
Self-cementation of the alkali-activated volcanic tuff coupling with thiol-functionalized expanded perlite that enhances the solidification and stabilization of the mercury-contaminated soil
TL;DR: In this paper , the thiol-functionalized expanded perlite (thiol-Exp-p) was employed in the self-cementation of the alkali-activated volcanic tuff (VT) as both lightweight aggregate and adsorbent to enhance the S/S of the Hg-contaminated soil.
References
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Biomonitoring of airborne mercury with perennial ryegrass cultures
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The potential of Lepidium sativum L. for phytoextraction of Hg-contaminated soil assisted by thiosulphate
Beata Smolińska,Sylwia Rowe +1 more
TL;DR: In this article, the authors evaluated the effectiveness of Hg soil cleaning with the use of Lepidium sativum L. and sodium thiosulphate, as well as the leach ability of hg from soil after phytoextraction.
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Arbuscular mycorrhizal fungi alter Hg root uptake and ligand environment as studied by X-ray absorption fine structure
Alojz Kodre,Alojz Kodre,Iztok Arčon,Iztok Arčon,Marta Debeljak,Mateja Potisek,Matevž Likar,Katarina Vogel-Mikuš,Katarina Vogel-Mikuš +8 more
TL;DR: In this paper, the role of arbuscular mycorrhizal (AM) fungi in soil-to-plant transfer was investigated. But the authors focused on maize roots inoculated with AM fungi.
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Evolution of mercuric reductase (merA) gene: a case of horizontal gene transfer.
TL;DR: The close association among members of different groups in merA gene tree, as supported by high bootstrap values, deviations in GC content and codon usage pattern indicate the possibility that horizontal gene transfer events might have taken place during the evolution of this gene.