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
More filters
Journal ArticleDOI
Molecular mechanisms underlying heavy metal uptake, translocation and tolerance in hyperaccumulators-an analysis: Heavy metal tolerance in hyperaccumulators
TL;DR: In this paper, the authors focus on the mechanisms of uptake, transport, and accumulation of common heavy metals such as mercury (Hg), lead (Pb), cadmium (Cd), chromium (Cr), zinc (Zn), copper (Cu) and Arsenic (As) in hyperaccumulator plants.
Demethylation─The Other Side of the Mercury Methylation Coin: A Critical Review
Tamar Barkay,Baohua Gu +1 more
TL;DR: The public and environmental health consequences of mercury methylation have drawn much attention and considerable research to Hg methylation processes and their dynamics in diverse environmen... as discussed by the authors,.
Journal ArticleDOI
Emerging bioremediation technologies for the treatment of textile wastewater containing synthetic dyes: a comprehensive review
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.
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
More filters
Journal ArticleDOI
The history of mercury pollution near the Spolana chlor-alkali plant (Neratovice, Czech Republic) as recorded by Scots pine tree rings and other bioindicators.
TL;DR: Assessment of mercury (Hg) pollution recorded in the tree rings of Scots Pine near a Czech chlor-alkali plant operating since 1941 indicated some smearing of the signal due to lateral translocation of Hg from sapwood to heartwood.
Journal ArticleDOI
Cadmium and Mercury phytostabilization from soil using Miscanthus × giganteus
TL;DR: It can be concluded that MxG, as a valuable energy crop, is a potential candidate for the phytostabilization and biomass production on soils contaminated with Cd and Hg moderately.
Journal ArticleDOI
Bioremediation of mercury: not properly exploited in contaminated soils!
Khandaker Rayhan Mahbub,Mezbaul Bahar,Mezbaul Bahar,Maurizio Labbate,Kannan M. Krishnan,Kannan M. Krishnan,Stuart Andrews,Ravi Naidu,Ravi Naidu,Mallavarapu Megharaj,Mallavarapu Megharaj +10 more
TL;DR: This review focuses on recent uses of Hg-resistant bacteria in bioremediation of mercury-contaminated sites, limitation and advantages of this approach, and identifies the gaps in existing research.
Journal ArticleDOI
Mercury uptake by Silene vulgaris grown on contaminated spiked soils.
Araceli Pérez-Sanz,Rocío Millán,M. José Sierra,Remedios Alarcón,P. García,M. Gil-Díaz,Saúl Vázquez,M. Carmen Lobo +7 more
TL;DR: Silene vulgaris retains more mercury in root than in shoot and also, the well known effectiveness of these plants in the recovering of contaminated soils makes S. vulgaris a good candidate to phytostabilization technologies.
Journal ArticleDOI
Using X-ray Microscopy and Hg L3 XANES to study Hg Binding in the Rhizosphere of Spartina Cordgrass
Cynthia Patty,Brandy Barnett,Bridget Mooney,Amanda S. Kahn,Silvio Levy,Yijin Liu,Piero Pianetta,Joy C. Andrews +7 more
TL;DR: The transmission X-ray microscope on beamline 6-2 at the Stanford Synchrotron Radiation Lightsource was used to obtain absorption contrast images and 3D tomography of Spartina foliosa roots that were exposed to 1 ppm Hg hydroponically for 1 week, interpreted within the context of obtaining a "snapshot" of mercury methylation in progress.