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
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
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Emerging bioremediation technologies for the treatment of textile wastewater containing synthetic dyes: a comprehensive review
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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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Journal ArticleDOI
Molecular Mechanism of Heavy Metal Toxicity and Tolerance in Plants: Central Role of Glutathione in Detoxification of Reactive Oxygen Species and Methylglyoxal and in Heavy Metal Chelation
Mohammad Anwar Hossain,Mohammad Anwar Hossain,Pukclai Piyatida,Jaime A. Teixeira da Silva,Masayuki Fujita +4 more
TL;DR: The aim of this review is to integrate a recent understanding of physiological and biochemical mechanisms of HM-induced plant stress response and tolerance based on the findings of current plant molecular biology research.
Journal ArticleDOI
Auxin and Plant-Microbe Interactions
Stijn Spaepen,Jozef Vanderleyden +1 more
TL;DR: There is increasing evidence that indole-3-acetic acid (IAA), the major naturally occurring auxin, is a signaling molecule in microorganisms because IAA affects gene expression in some microorganisms, therefore, IAA can act as a reciprocal signaling molecules in microbe-plant interactions.
Journal ArticleDOI
A comparison of technologies for remediation of heavy metal contaminated soils
TL;DR: In this article, a review of the current status of technology deployment and recommendations for future remediation research is presented. And the authors also elucidate and compare the available technologies that are currently being applied for remediation of heavy metal(loid) contaminated soils, as well as the economic aspect of soil remediation for different techniques.
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Plant science: the key to preventing slow cadmium poisoning
TL;DR: Recent studies on rice (Oryza sativa) and Cd-hyperaccumulating plants that have led to important insights into the processes controlling the passage of Cd from the soil to edible plant organs are reviewed.
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Environmental Mercury and Its Toxic Effects
TL;DR: This review addresses the systemic pathophysiology of individual organ systems associated with mercury poisoning through eating contaminated fish, seafood, and wildlife which have been exposed to mercury through ingestion of contaminated lower organisms.