Journal ArticleDOI
Enhanced Accumulation of Pb in Indian Mustard by Soil-Applied Chelating Agents
Michael J. Blaylock,David E. Salt,Slavik Dushenkov,Olga Zakharova,Christopher D. Gussman,Yoram Kapulnik,Burt D. Ensley,Ilya Raskin +7 more
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TLDR
In this paper, Indian mustard (Brassica juncea) was used to demonstrate the capability of plants to accumulate high tissue concentrations of Pb when grown in Pb-contaminated soil.Abstract:
Phytoremediation is emerging as a potential cost-effective solution for the remediation of contaminated soils. Because contaminants such as lead (Pb) have limited bioavailability in the soil, a means of solubilizing the Pb in the soil and facilitating its transport to the shoots of plants is vital to the success of phytoremediation. Indian mustard (Brassica juncea) was used to demonstrate the capability of plants to accumulate high tissue concentrations of Pb when grown in Pb-contaminated soil. Concentrations of 1.5% Pb in the shoots of B. juncea were obtained from soils containing 600 mg of Pb/kg amended with synthetic chelates such as EDTA. The accumulation of Pb in the tissue corresponded to the concentration of Pb in the soil and the concentration of EDTA added to the soil. The accumulation of Cd, Cu, Ni, and Zn from contaminated soil amended with EDTA and other synthetic chelators was also demonstrated. The research indicates that the accumulation of metal in the shoots of B. juncea can be enhanced t...read more
Citations
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Journal ArticleDOI
Lead toxicity in plants
TL;DR: In this article, a review addresses various morphological, physiological and biochemical effects of Pb toxicity and also strategies adopted by plants for Pb-detoxification and developing tolerance to Pb.
Journal ArticleDOI
Phytoextraction of toxic metals: a review of biological mechanisms.
TL;DR: Four research areas relevant to metal phytoextraction from contaminated soil are reviewed and an assessment of the current status of technology deployment and suggestions for future phytoremediation research are concluded.
Journal ArticleDOI
Phytoremediation of soil metals
TL;DR: Little molecular understanding of plant activities critical to phytoremediation has been achieved, but recent progress in characterizing Fe, Cd and Zn uptake by Arabidopsis and yeast mutants indicates strategies for developing transgenic improved phytOREmediation cultivars for commercial use.
Journal ArticleDOI
A review on phytoremediation of heavy metals and utilization of its byproducts.
TL;DR: The mobility, bioavaliability and plant response to presence of soil heavy metals, classifies the plants according to phytoextraction mechanism and discusses the pathway of metal in plants.
Book ChapterDOI
Metal hyperaccumulator plants: a review of the ecology and physiology of a biological resource for phytoremediation of metal-polluted soils
TL;DR: The concentrations in plant parts depend both on intrinsic and extrinsic factors and vary greatly for different species and for different metals as discussed by the authors, with only small elevations of metal concentration to survival with accumulated metal constituting a significant percentage of the plant dry matter.
References
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Book
Environmental Chemistry of Soils
TL;DR: In this article, an introduction to modern soil chemistry describes chemical processes in soils in terms of established principles of inorganic, organic, and physical chemistry, providing an understanding of the structure of the solid mineral and organic materials from which soils are formed.
Book
Chemical equilibria in soils
TL;DR: In this paper, Chemical equilibria in soils, chemical equilibrium in soil, Chemical equilibrium in soils, مرکز فناوری اطلاعات و اشعر رسانی, ک-شاouرزی
Journal ArticleDOI
Phytoextraction: The Use of Plants To Remove Heavy Metals from Soils
TL;DR: The high metal accumulation by some cultivars of B. juncea suggests that these plants may be used to clean up toxic metal-contaminated sites in a process termed phytoextraction.
Journal ArticleDOI
Mechanisms of Cadmium Mobility and Accumulation in Indian Mustard
TL;DR: Indian mustard (Brassica juncea L.), a high biomass crop plant, accumulated substantial amounts of cadmium, with bioaccumulation coefficients associated with a rapid accumulation of phytochelatins in the root, suggesting that the process of Cd transport from solution through the root and into the xylem is mediated by a saturable transport system(s).
Journal ArticleDOI
Evidence for a specific uptake system for iron phytosiderophores in roots of grasses.
Volker Römheld,Horst Marschner +1 more
TL;DR: The results indicate the existence of a specific uptake system for Fe(III)phytosiderophores in roots of barley and all other graminaceous species and two strategies are evident for the acquisition of iron by plants under iron deficiency.