caa a22 4500 445840854 CHVBK 20180317145343.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10725-010-9527-0 doi (NATIONALLICENCE)springer-10.1007/s10725-010-9527-0 Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings [Elektronische Daten] [Ing Phang, David Leung, H. Taylor, David Burritt] Uptake of the non-essential element, lead (Pb), by 7-days-old Arabidopsis thaliana seedlings caused inhibition of root growth. Pb accumulated mainly in the root and only a small proportion of the total uptake was transported to the shoot. At the ultrastructural level, Pb was localized mainly in the cell walls, intercellular spaces and vacuoles, which may serve to minimize Pb toxicity to vital functions of the cytosol. Pb exposure induced the generation of reactive oxygen species (ROS) and increased the level of lipid hydroperoxide. These changes were accompanied by up-regulation of the activities of antioxidative enzymes in a dose-dependent manner. Although no major destructive changes to the cytoplasm and vital organelles were observed, it is postulated that at least part of the cost of Pb exposure to A. thaliana seedlings is reflected in reduced root growth associated with increased free radical production by cell wall-accumulated Pb. Springer Science+Business Media B.V., 2010 Pb nationallicence Arabidopsis thaliana nationallicence Growth inhibition nationallicence Oxidative stress nationallicence Phang Ing School of Biological Sciences, University of Canterbury, Private Bag 4800, 8140, Christchurch, New Zealand aut Leung David School of Biological Sciences, University of Canterbury, Private Bag 4800, 8140, Christchurch, New Zealand aut Taylor H. School of Biological Sciences, University of Canterbury, Private Bag 4800, 8140, Christchurch, New Zealand aut Burritt David Department of Botany, University of Otago, PO Box 56, 9054, Dunedin, New Zealand aut Plant Growth Regulation Springer Netherlands 64/1(2011-05-01), 17-25 0167-6903 64:1<17 2011 64 10725 https://doi.org/10.1007/s10725-010-9527-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10725-010-9527-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Phang Ing School of Biological Sciences, University of Canterbury, Private Bag 4800, 8140, Christchurch, New Zealand aut NATIONALLICENCE 700 1- Leung David School of Biological Sciences, University of Canterbury, Private Bag 4800, 8140, Christchurch, New Zealand aut NATIONALLICENCE 700 1- Taylor H. School of Biological Sciences, University of Canterbury, Private Bag 4800, 8140, Christchurch, New Zealand aut NATIONALLICENCE 700 1- Burritt David Department of Botany, University of Otago, PO Box 56, 9054, Dunedin, New Zealand aut NATIONALLICENCE 773 0- Plant Growth Regulation Springer Netherlands 64/1(2011-05-01), 17-25 0167-6903 64:1<17 2011 64 10725 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer