Emanuela D. Tiodar

Bio: Emanuela D. Tiodar is an academic researcher from Babeș-Bolyai University. The author has contributed to research in topics: Bioremediation & Phytoremediation. The author has an hindex of 1, co-authored 1 publications receiving 8 citations.

Phytoremediation and Microorganisms-Assisted Phytoremediation of Mercury-Contaminated Soils: Challenges and Perspectives.

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.

Molecular mechanisms underlying heavy metal uptake, translocation and tolerance in hyperaccumulators-an analysis: Heavy metal tolerance in hyperaccumulators

Abstract: Phytoremediation is an economically viable green technology that utilizes hyperaccumulator plants to remove heavy metals (HM) from the soil. Hyperaccumulators are adept at sequestering high concentrations of HM in aerial parts and intracellular detoxification of HM through cell wall binding, organic acids, chelation and sequestration. Excess HM activate oxidative stress defense mechanisms and initiate synthesis of stress-related proteins in plants. Plethora of studies have assessed the feasibility of phytoextraction and demonstrated that high biomass and metal hyperaccumulation are the two basic requirements for making the process efficient. However, biochemical pathways involved in HM uptake, translocation and sequestration in these plants are not fully understood. Thus, more fundamental understanding of the traits and mechanisms involved in hyperaccumulation is needed to optimize phytoextraction. In this review, we aim to focus on the mechanisms of uptake, transport, and accumulation of common HM such as mercury (Hg), lead (Pb), cadmium (Cd), chromium (Cr), zinc (Zn), copper (Cu) and Arsenic (As) in hyperaccumulator plants. We will also discuss prominent metallophytes and their phytoremediation strategies. This study will be helpful in understanding the pathways involved in the uptake and translocation of HM by hyperaccumulators. It would also assist in gaining knowledge about the adaptation strategy used by plants to achieve homeostasis.

Demethylation─The Other Side of the Mercury Methylation Coin: A Critical Review

Abstract: The public and environmental health consequences of mercury (Hg) methylation have drawn much attention and considerable research to Hg methylation processes and their dynamics in diverse environmen...