Abstract Background Hyperaccumulation of trace elements is a rare trait among plants which being investigated to advance our understanding the regulation metal accumulation and applications in phytotechnologies. Noccaea caerulescens (Brassicaceae) an intensively studied hyperaccumulator model plant capable attaining extremely high tissue concentrations zinc nickel with substantial genetic varia...

• Growth and heavy metal (Zn and Cd) hyperaccumulation were investigated in metallicolous and nonmetallicolous Mediterranean populations of Thlaspi caerulescens (Brassicaceae), and in offspring from controlled crosses between these populations. • Seeds for the growth and crossing experiments were collected from a number of sites varying in heavy metal contamination. Tissue Zn and Cd content was...

Title of Document: ECOLOGICAL INTERACTIONS OF THE CADMIUMAND ZINCHYPERACCUMULATING PLANT, THLASPI CAERULESCENS, AND THEIR IMPLICATIONS FOR PHYTOREMEDIATION Judy P. Che-Castaldo Doctor of Philosophy, 2011 Directed By: Dr. David W. Inouye Department of Biology The success of invasive species can be attributed to a combination of abiotic factors, such as abundant resources and favorable climate, a...

Metal hyperaccumulator plants like Thlaspi caerulescens J. & C. Presl. are used for phytoremediation of contaminated soils. Since little is known about the rhizosphere of hyperaccumulators, the influence of T. caerulescens was compared with the effects of Trifolium pratense L. on soil microbes. High- and low-metal soils were collected near a zinc smelter in Palmerton, Penn. Soil pH was adjusted...

P1B-ATPases are decisive for metal accumulation phenotypes, but mechanisms of their regulation are only partially understood. Here, we studied the Cd/Zn transporting ATPases NcHMA3 and NcHMA4 from Noccaea caerulescens as well as AhHMA3 and AhHMA4 from Arabidopsis halleri. Protein biochemistry was analyzed on HMA4 purified from roots of N. caerulescens in active state. Metal titration of NcHMA4 ...

Abstract Purpose The increasing volumes of mine tailings that are being generated globally because the rise in metal demand, whilst ore-grades continue to decline, call for novel sustainable management options. Phytoextraction using hyperaccumulator plant species may be one such strategies deal with these large contaminated materials. However, base metals (such as zinc, lead, copper) inherently...