Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination

9 páginas.-- 7 figuras.-- 1 tablas.-- 37 referencias.-- Supplementary data related to this article can be found at http://dx.doi.org/10.1016/j.envpol.2016.05.080.

Detalhes bibliográficos
Autores: Montiel-Rozas, María del Mar, Madejón, Engracia, Madejón, Paula
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2016
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/133349
Acesso em linha:http://hdl.handle.net/10261/133349
Access Level:Acceso aberto
Palavra-chave:Amendments
Citric acid
Malic acid
Oxalic acid
Phytoremediation
Rhizosphere
id ES_13e3a642fd433263df59ffd8ed4b1ebd
oai_identifier_str oai:digital.csic.es:10261/133349
network_acronym_str ES
network_name_str España
repository_id_str
spelling Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contaminationMontiel-Rozas, María del MarMadejón, EngraciaMadejón, PaulaAmendmentsCitric acidMalic acidOxalic acidPhytoremediationRhizosphere9 páginas.-- 7 figuras.-- 1 tablas.-- 37 referencias.-- Supplementary data related to this article can be found at http://dx.doi.org/10.1016/j.envpol.2016.05.080.Bioavailability of heavy metals can be modified by different root exudates. Among them, low molecular weight organic acids (LMWOAs) play an important role in this process. Three plant species (Poa annua, Medicago polymorpha and Malva sylvestris), potentially used for phytoremediation, have been assessed for both metal uptake and LMWOAs excretion in contaminated environments with different concentrations of Cd, Cu and Zn. The experiments have been carried out in washed sand and in three contaminated soils where two organic amendments were added (biosolid compost and alperujo compost). The most abundant LMWOAs excreted by all studied plants were oxalic and malic acids, although citric and fumaric acids were also detected. The general tendency was that plants responded to an increase of heavy metal stress releasing higher amounts of LMWOAs. This is an efficient exclusion mechanism reducing the metal uptake and allowing the plant growth at high levels of contamination. In the experiment using wash sand as substrate, the organic acids composition and quantity depended mainly on plant species and metal contamination. M. polymorpha was the species that released the highest concentrations of LMWOAs, both in sand and in soils with no amendment addition, whereas a decrease of these acids was observed with the addition of amendments. Our results established a clear effect of organic matter on the composition and total amount of LMWOAs released. The increase of organic matter and nutrients, through amendments, improved the soil quality reducing phytotoxicity. As a result, organic acids exudates decreased and were solely composed of oxalic acid (except for M. polymorpha). The release of LMWOAs has proved to be an important mechanism against heavy metal stress, unique to each species and modifiable by means of organic amendment addition.This study was made possible by AGL2011-23617 project supported by the CICYT of the Ministerio de Ciencia e Innovación of Spain and FEDER (EU). MMar Montiel- Rozas acknowledges support from the MINECO, (FPI grant, BES-2012-05339). P. Madejon and E. Madejon are members of the “Unidad Asociada al CSIC de Uso sostenible del suelo y el agua en la agricultura (US-IRNAS)”.Peer reviewedElsevierComisión Interministerial de Ciencia y Tecnología, CICYT (España)Ministerio de Ciencia e Innovación (España)European CommissionMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/133349reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésdx.doi.org/10.1016/j.envpol.2016.05.080Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1333492026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination
title Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination
spellingShingle Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination
Montiel-Rozas, María del Mar
Amendments
Citric acid
Malic acid
Oxalic acid
Phytoremediation
Rhizosphere
title_short Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination
title_full Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination
title_fullStr Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination
title_full_unstemmed Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination
title_sort Effect of heavy metals and organic matter on root exudates (low molecular weight organic acids) of herbaceous species: An assessment in sand and soil conditions under different levels of contamination
dc.creator.none.fl_str_mv Montiel-Rozas, María del Mar
Madejón, Engracia
Madejón, Paula
author Montiel-Rozas, María del Mar
author_facet Montiel-Rozas, María del Mar
Madejón, Engracia
Madejón, Paula
author_role author
author2 Madejón, Engracia
Madejón, Paula
author2_role author
author
dc.contributor.none.fl_str_mv Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Ministerio de Ciencia e Innovación (España)
European Commission
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Amendments
Citric acid
Malic acid
Oxalic acid
Phytoremediation
Rhizosphere
topic Amendments
Citric acid
Malic acid
Oxalic acid
Phytoremediation
Rhizosphere
description 9 páginas.-- 7 figuras.-- 1 tablas.-- 37 referencias.-- Supplementary data related to this article can be found at http://dx.doi.org/10.1016/j.envpol.2016.05.080.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/133349
url http://hdl.handle.net/10261/133349
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv dx.doi.org/10.1016/j.envpol.2016.05.080
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869403704465031168
score 15,812429

Registros relacionados