Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil

Chemical processes in the rhizosphere play a major role in the availability of metals to plants. The objective of this study was to assess the potential of white lupin (Lupinus albus L.) for the phytoimmobilisation of heavy metals in a calcareous soil with high levels of Zn and Pb (2,058 and 2,947 μ...

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Detalles Bibliográficos
Autores: Martínez Alcalá, Isabel, Clemente, Rafael, Bernal, Pilar
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Universidad Católica San Antonio de Murcia (UCAM)
Repositorio:RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia
OAI Identifier:oai:repositorio.ucam.edu:10952/7972
Acceso en línea:http://hdl.handle.net/10952/7972
Access Level:acceso abierto
Palabra clave:Heavy metals
Lupinus albus
Phytoimmobilisation
Rhizosphere
Soil contamination
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spelling Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous SoilMartínez Alcalá, IsabelClemente, RafaelBernal, PilarHeavy metalsLupinus albusPhytoimmobilisationRhizosphereSoil contaminationChemical processes in the rhizosphere play a major role in the availability of metals to plants. The objective of this study was to assess the potential of white lupin (Lupinus albus L.) for the phytoimmobilisation of heavy metals in a calcareous soil with high levels of Zn and Pb (2,058 and 2,947 μg g−1 , respectively) by evaluating the chemical changes in the rhizosphere, relative to bulk soil, which modify the solubility of heavy metals. Plants were cultivated for 74 days in specially designed pots (rhizopots) in which rhizosphere was sampled easily under controlled conditions. White lupin accumulated high concentrations of Mn in the shoots (average of 4,960 μg g−1 ), well above the normal concentration in plants (300 μg g−1 ). But the metal concentrations found in shoots were not at toxic levels. Rhizosphere soil showed a significantly greater redox potential (245 mV) and water-soluble organic carbon content (34.6 μgCg−1 ) than bulk soil (227 mV; 27.6 μg C g−1 ). Root activity decreased EDTA-extractable Pb, Zn and Fe and promoted their precipitation as insoluble compounds in the residual fraction (acid digestion), hardly available to plants. These results indicate the suitability of this annual N2-fixing species for the initial phytoimmobilisation of heavy metals in contaminated soils.Ciencias Ambientales2009info:eu-repo/semantics/articlehttp://hdl.handle.net/10952/7972reponame:RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murciainstname:Universidad Católica San Antonio de Murcia (UCAM)Inglésinfo:eu-repo/semantics/openAccessoai:repositorio.ucam.edu:10952/79722026-06-07T18:35:21Z
dc.title.none.fl_str_mv Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil
title Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil
spellingShingle Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil
Martínez Alcalá, Isabel
Heavy metals
Lupinus albus
Phytoimmobilisation
Rhizosphere
Soil contamination
title_short Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil
title_full Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil
title_fullStr Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil
title_full_unstemmed Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil
title_sort Metal Availability and Chemical Properties in the Rhizosphere of Lupinus albus L. Growing in a High-Metal Calcareous Soil
dc.creator.none.fl_str_mv Martínez Alcalá, Isabel
Clemente, Rafael
Bernal, Pilar
author Martínez Alcalá, Isabel
author_facet Martínez Alcalá, Isabel
Clemente, Rafael
Bernal, Pilar
author_role author
author2 Clemente, Rafael
Bernal, Pilar
author2_role author
author
dc.subject.none.fl_str_mv Heavy metals
Lupinus albus
Phytoimmobilisation
Rhizosphere
Soil contamination
topic Heavy metals
Lupinus albus
Phytoimmobilisation
Rhizosphere
Soil contamination
description Chemical processes in the rhizosphere play a major role in the availability of metals to plants. The objective of this study was to assess the potential of white lupin (Lupinus albus L.) for the phytoimmobilisation of heavy metals in a calcareous soil with high levels of Zn and Pb (2,058 and 2,947 μg g−1 , respectively) by evaluating the chemical changes in the rhizosphere, relative to bulk soil, which modify the solubility of heavy metals. Plants were cultivated for 74 days in specially designed pots (rhizopots) in which rhizosphere was sampled easily under controlled conditions. White lupin accumulated high concentrations of Mn in the shoots (average of 4,960 μg g−1 ), well above the normal concentration in plants (300 μg g−1 ). But the metal concentrations found in shoots were not at toxic levels. Rhizosphere soil showed a significantly greater redox potential (245 mV) and water-soluble organic carbon content (34.6 μgCg−1 ) than bulk soil (227 mV; 27.6 μg C g−1 ). Root activity decreased EDTA-extractable Pb, Zn and Fe and promoted their precipitation as insoluble compounds in the residual fraction (acid digestion), hardly available to plants. These results indicate the suitability of this annual N2-fixing species for the initial phytoimmobilisation of heavy metals in contaminated soils.
publishDate 2009
dc.date.none.fl_str_mv 2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10952/7972
url http://hdl.handle.net/10952/7972
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia
instname:Universidad Católica San Antonio de Murcia (UCAM)
instname_str Universidad Católica San Antonio de Murcia (UCAM)
reponame_str RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia
collection RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407642834698240
score 15.812455

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