The impact of EDTA on lead distribution and speciation in the accumulator Sedum alfredii by synchrotron X-ray investigation.
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Tian SK, Lu LL, Yang XE, Huang HG, Brown P, Labavitch J, Liao HB, He ZL
The impact of EDTA on lead distribution and speciation in the accumulator Sedum alfredii by synchrotron X-ray investigation.
Environ Pollut. 2011 Mar;159(3):782-8. doi: 10.1016/j.envpol.2010.11.020. Epub 2010 Dec 18.
- PubMed ID
- 21168940 [ View in PubMed]
- Abstract
The in vivo localization and speciation of lead (Pb) in tissues of the accumulator Sedum alfredii grown in EDTA-Pb and Pb(NO(3))(2) was studied by synchrotron X-ray investigation. The presence of EDTA-Pb in solution resulted in a significant reduction of Pb accumulation in S. alfredii. Lead was preferentially localized in the vascular bundles regardless of treatments but the intensities of Pb were lower in the plants treated with EDTA. Lead was predominantly presented as a Pb-cell wall complex in the plants regardless of its supply form. However, a relatively high proportion of Pb was observed as Pb-EDTA complex when the plant was treated with EDTA-Pb, but as a mixture of Pb(3)(PO(4))(2), Pb-malic, and Pb-GSH when cultured with ionic Pb. These results suggest that EDTA does not increase the internal mobility of Pb, although the soluble Pb-EDTA complex could be transported and accumulated within the plants of S. alfredii.
DrugBank Data that Cites this Article
- Drug Targets
Drug Target Kind Organism Pharmacological Action Actions Edetate calcium disodium anhydrous Lead Small molecule Humans YesChelatorDetails Edetate disodium anhydrous Lead Small molecule Humans YesChelatorDetails Edetic acid Lead Small molecule Humans YesChelatorDetails