naa a22 4500 510749925 CHVBK 20180411083100.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11270-013-1623-0 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1623-0 Effect of Iron (Fe2+) Concentration in Soil on Arsenic Uptake in Rice Plant ( Oryza sativa L.) when Grown with Arsenate [As(V)] and Dimethylarsinate (DMA) [Elektronische Daten] [M. Rahman, H. Hasegawa, M. Rahman, T. Maki, Richard Lim] Being predominant inorganic arsenicals, methylarsenicals also occur in anaerobic paddy soils. Therefore, this study investigated the influence of Fe2+ concentrations and arsenic speciation [arsenate (As(V)) and dimethylarsinate (DMA)] in paddy soils on arsenic uptake in rice plant. Rice seedlings were grown in soil irrigated with a Murashige and Skoog (MS) growth solution containing As(V) or DMA with or without 1.8mM Fe2+ in excess to the background concentration of total iron (0.03mM) in the soil. Arsenic concentration in rice roots increased initially and then decreased gradually when the seedlings were grown with excess Fe2+ and As(V). In contrast, arsenic concentration in the roots increased steadily (P < 0.01) when the seedlings were grown without excess Fe2+ and As(V). When the form of the arsenic was DMA, total arsenic (tAs) concentration in rice roots increased gradually (P < 0.01) and was not affected by the addition of excess Fe2+ in the soil. When rice seedlings were grown with As(V), tAs concentration in rice roots and shoots increased steadily (P < 0.01) for gradual increase of Fe2+ concentrations in soil. However, tAs concentration in roots and shoots was independent of Fe2+ concentrations in soil when the form of arsenic was DMA. The tAs concentrations in rice shoots also increased significantly (P < 0.01) with increasing exposure time for both As(V) and DMA. Thus, Fe2+ concentrations in soil affect arsenic uptake in rice plant depending on the speciation of arsenic. Springer Science+Business Media Dordrecht, 2013 Arsenate [As(V)] nationallicence Dimethylarsinate (DMA) nationallicence Ferrous iron (Fe2+) nationallicence Rice seedling nationallicence Soil nationallicence Rahman M. Centre for Environmental Sustainability, School of the Environment, Faculty of Science, University of Technology, Sydney, Broadway, P.O. Box 123, 2007, Sydney, New South Wales, Australia aut Hasegawa H. Institute of Science and Technology, Kanazawa University, Kakuma, 920-1161, Kanazawa, Japan aut Rahman M. Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, 920-1192, Kanazawa, Japan aut Maki T. Institute of Science and Technology, Kanazawa University, Kakuma, 920-1161, Kanazawa, Japan aut Lim Richard Centre for Environmental Sustainability, School of the Environment, Faculty of Science, University of Technology, Sydney, Broadway, P.O. Box 123, 2007, Sydney, New South Wales, Australia aut Water, Air, & Soil Pollution Springer Netherlands 224/7(2013-07-01), 1-11 0049-6979 224:7<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1623-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1623-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rahman M. Centre for Environmental Sustainability, School of the Environment, Faculty of Science, University of Technology, Sydney, Broadway, P.O. Box 123, 2007, Sydney, New South Wales, Australia aut NATIONALLICENCE 700 1- Hasegawa H. Institute of Science and Technology, Kanazawa University, Kakuma, 920-1161, Kanazawa, Japan aut NATIONALLICENCE 700 1- Rahman M. Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, 920-1192, Kanazawa, Japan aut NATIONALLICENCE 700 1- Maki T. Institute of Science and Technology, Kanazawa University, Kakuma, 920-1161, Kanazawa, Japan aut NATIONALLICENCE 700 1- Lim Richard Centre for Environmental Sustainability, School of the Environment, Faculty of Science, University of Technology, Sydney, Broadway, P.O. Box 123, 2007, Sydney, New South Wales, Australia aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/7(2013-07-01), 1-11 0049-6979 224:7<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer