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
Riparian vegetation role in mercury uptake (Valdeazogues River, Almadén, Spain)
TL;DR: In this paper, the role of riparian vegetation in Hg removal along Valdeazogues River that is located within the old mercury mining district of Almaden (Ciudad Real, Spain).
Journal ArticleDOI
Mercury alters the rhizobacterial community in Brazilian wetlands and it can be bioremediated by the plant-bacteria association.
Caylla Mariano,Ivani Souza Mello,Breno Barros,Gilvan Ferreira da Silva,Ailton José Terezo,Marcos Antônio Soares +5 more
TL;DR: Bacteria isolated from contaminated environments had higher minimum inhibitory concentration values, presented plasmids and the merA gene, and were multi-resistant to metals and antibiotics, and could be added to biofertilizers produced in research and related industries.
Journal ArticleDOI
Endophytic bacteria mitigate mercury toxicity to host plants
Ivani Souza Mello,William Pietro-Souza,Breno Barros,Gilvan Ferreira da Silva,Marcelo Lattarulo Campos,Marcos Antônio Soares +5 more
TL;DR: Endophytic bacterial strains may well provide important inoculants for plant growth promotion on metal-contaminated sites and in metal bioremediation programs.
Journal ArticleDOI
Total mercury and methylmercury in rice: Exposure and health implications in Bangladesh.
Yajie Wang,Habibullah-Al-Mamun,Jialiang Han,Le Wang,Yaru Zhu,Xiaohang Xu,Ning Li,Guangle Qiu +7 more
TL;DR: More attention should be paid to residents with long-term rice MeHg exposure, especially children in the 2-5 year-old group, and diet structure be improved to avoid high rice methylmercury exposure.
Journal ArticleDOI
SCARECROW promoter-driven expression of a bacterial mercury transporter MerC in root endodermal cells enhances mercury accumulation in Arabidopsis shoots
Shimpei Uraguchi,Yuka Sone,Aino Yoshikawa,Michi Tanabe,Haruka Sato,Yuto Otsuka,Ryosuke Nakamura,Yasukazu Takanezawa,Masako Kiyono +8 more
TL;DR: Endodermis-specific expression of the MerC-SYP121 fusion proteins in plant roots sufficiently enhances mercury uptake and accumulation into shoots, which would be an ideal phenotype for phytoremediation of mercury-contaminated environments.