Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experiments

High cadmium (Cd) concentrations are a serious environmental problem in various agro-ecosystems and urban areas. Since mobile Cd in the soil can be accumulated in the food chain by plant uptake, remediation techniques to fix Cd in the soil in situ are urgently required, for which the application of...

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Autores principales:	Siebers,N, Siangliw,M, Tongcumpou,Ch
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:	P-fertilizer Cd immobilization phytoavailability subcellular fractionation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400006
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spelling	oai:scielo:S0718-951620130004000062014-01-29Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experimentsSiebers,NSiangliw,MTongcumpou,Ch P-fertilizer Cd immobilization phytoavailability subcellular fractionation High cadmium (Cd) concentrations are a serious environmental problem in various agro-ecosystems and urban areas. Since mobile Cd in the soil can be accumulated in the food chain by plant uptake, remediation techniques to fix Cd in the soil in situ are urgently required, for which the application of phosphorus (P) is auspicious. The effects of P on soil pH, Cd phytoavailability, and Cd distribution with regard to rice plants were examined in a pot experiment using soil contaminated with 82 mg Cd kg-1. A commercial P fertilizer (0-52-34, containing 52% P2O5 and 34% K2O) was applied to the soil to reach P concentrations of 0 (the control), 50, 200, and 1000 mg P kg-1 above the baseline P concentration of the soil. P-application increased the soil pH and caused a redistribution of Cd to less mobile fractions. Plant growth was also enhanced by P addition. Plant Cd uptake was only significantly reduced in mature plants receiving a P-application rate of 1000 mg P kg-1. Additionally, a hydroponic experiment was carried out to study the effects of different P concentrations on the subcellular distribution of Cd in rice plants. When a P-application of 1000 mg L-1 was applied, the Cd proportions in the cell walls increased by 7% in the roots and 10% in the shoots, while reductions for the other fractions were observed, hinting at the occurrence of a detoxifying effect of P on the rice plant's Cd concentration.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400006en10.4067/S0718-95162013005000066
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	P-fertilizer Cd immobilization phytoavailability subcellular fractionation
spellingShingle	P-fertilizer Cd immobilization phytoavailability subcellular fractionation Siebers,N Siangliw,M Tongcumpou,Ch Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experiments
description	High cadmium (Cd) concentrations are a serious environmental problem in various agro-ecosystems and urban areas. Since mobile Cd in the soil can be accumulated in the food chain by plant uptake, remediation techniques to fix Cd in the soil in situ are urgently required, for which the application of phosphorus (P) is auspicious. The effects of P on soil pH, Cd phytoavailability, and Cd distribution with regard to rice plants were examined in a pot experiment using soil contaminated with 82 mg Cd kg-1. A commercial P fertilizer (0-52-34, containing 52% P2O5 and 34% K2O) was applied to the soil to reach P concentrations of 0 (the control), 50, 200, and 1000 mg P kg-1 above the baseline P concentration of the soil. P-application increased the soil pH and caused a redistribution of Cd to less mobile fractions. Plant growth was also enhanced by P addition. Plant Cd uptake was only significantly reduced in mature plants receiving a P-application rate of 1000 mg P kg-1. Additionally, a hydroponic experiment was carried out to study the effects of different P concentrations on the subcellular distribution of Cd in rice plants. When a P-application of 1000 mg L-1 was applied, the Cd proportions in the cell walls increased by 7% in the roots and 10% in the shoots, while reductions for the other fractions were observed, hinting at the occurrence of a detoxifying effect of P on the rice plant's Cd concentration.
author	Siebers,N Siangliw,M Tongcumpou,Ch
author_facet	Siebers,N Siangliw,M Tongcumpou,Ch
author_sort	Siebers,N
title	Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experiments
title_short	Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experiments
title_full	Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experiments
title_fullStr	Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experiments
title_full_unstemmed	Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experiments
title_sort	cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: soil and hydroponic experiments
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400006
work_keys_str_mv	AT siebersn cadmiumuptakeandsubcellulardistributioninriceplantsasaffectedbyphosphorussoilandhydroponicexperiments AT siangliwm cadmiumuptakeandsubcellulardistributioninriceplantsasaffectedbyphosphorussoilandhydroponicexperiments AT tongcumpouch cadmiumuptakeandsubcellulardistributioninriceplantsasaffectedbyphosphorussoilandhydroponicexperiments
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Cadmium uptake and subcellular distribution in rice plants as affected by phosphorus: Soil and hydroponic experiments

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