Lead phytoextraction: species variation in lead uptake and translocation

Chelate-Assisted Pb Phytoextraction: Pb Availability, Uptake, and Translocation Constraints

Chelates have been shown to enhance phytoextraction of Pb from contaminated soil. Mechanisms behind this phenomenon, however, remain largely unexplored. In this paper we examine chelate effect on Pb dissolution, plant Pb uptake, and internal plant Pb translocation. EDTA was found to be the most efficient in increasing watersoluble Pb concentration in our test soil. Unfortunately, PbEDTA is high...

Enhanced Phytoextraction of Lead by Indian Mustard Using Electric Field

A phytoextraction treatment enhanced by electric field to decontaminate a heavily Pb polluted soil has been tested in a greenhouse-scale experiment. Brassica juncea was selected as Pb-hyperaccumulator plant. The influence of the application of two Electric Potential Difference values (0.6 and 1.1 V cm) and the addition of EDTA (2.5 mmol kg) on biomass production, plant uptake, contaminant leach...

Lead uptake, toxicity, and detoxification in plants.

Lead has gained considerable attention as a persistent toxic pollutant of concern,partly because it has been prominent in the debate concerning the growing anthropogenic pressure on the environment. The purpose of this review is to describe how plants take lead up and to link such uptake to the ecotoxicity of lead in plants.Moreover, we address the mechanisms by which plants or plant systems de...

Lead uptake, bioaccumulation and tolerance in summer savory (Satureja hortensis L.)

The objective of this study was to determine the effects of lead (Pb) exposure on bioaccumulation, growth, and tolerance mechanisms in summer savory (Satureja hortensis L.). Plants were subjected to different levels of Pb concentrations including 0 (control), 5, 10, 25, 50 and 100 mg L-1 in growing medium. Pb treatment led to significant increase in root and shoot Pb content. Calculation of BF,...

Lead and Lead Compounds