PMID: 15378980Sep 24, 2004Paper

Chemical speciation and cellular deposition of lead in Sesbania drummondii

Environmental Toxicology and Chemistry
Nilesh C SharmaShivendra Sahi

Abstract

The internalized speciation of lead in roots and leaves of Sesbania drummondii, a lead hyperaccumulator, grown in lead nitrate solution was studied using x-ray absorption near-edge structure and extended x-ray absorption fine structure. Lead was predominantly present as lead acetate in both plant tissues. The other dominant forms of accumulation were lead-sulfur compounds. Whereas lead sulfate and sulfide were found in leaves, only lead sulfide was detected in root samples. These observations indicate that S. drummondii is able to biotransform lead nitrate in the nutrient solution to lead acetate and sulfate in its tissues. Complexation with acetate and sulfate may be a lead detoxification strategy in this plant. Transmission-electron microscopy revealed the pattern of lead distribution in and around the cells. Dense distributions of lead grains were detected in root cell walls and plasma membranes, whereas evidence for vacuolar transport of lead was noticed in the stem cells.

Citations

Feb 15, 2013·Biological Trace Element Research·Zuzana CadkováIvana Jankovská
Mar 31, 2006·Environmental Science & Technology·Guadalupe De la RosaJorge L Gardea-Torresdey
Aug 23, 2007·Environmental Science & Technology·Nilesh C SharmaTarasankar Pal
Mar 23, 2013·Environmental Science & Technology·Gudrun L BovenkampJosef Hormes
May 13, 2009·The International Journal of Biochemistry & Cell Biology·Jose R Peralta-VideaJorge Gardea-Torresdey
Jan 15, 2008·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Gang ChenWei-dong Zhou
Feb 8, 2005·Plant Physiology and Biochemistry : PPB·A Thomas RuleyShivendra V Sahi
Sep 24, 2019·Journal of Environmental Management·Usman ZulfiqarMuhammad Zohaib Anjum
Jul 1, 2014·Comprehensive Reviews in Food Science and Food Safety·P HajebL Afsah-Hejri
Jun 23, 2018·Journal of Agricultural and Food Chemistry·Jianling Sun, Liqiang Luo
Oct 26, 2005·Environmental Science & Technology·Janet Cotter-HowellsA John Morgan
Apr 16, 2010·Colloids and Surfaces. B, Biointerfaces·Catherine C FowlesIpsita A Banerjee
Feb 24, 2020·Ecotoxicology and Environmental Safety·Mingyan JiangShiliang Liu

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