Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L

The aim of the present study was to examine the ability of I. pseudacorus L., an ornamental macrophyte of great potential for phytoremediation, to tolerate and accumulate Cr and Zn. Plants were grown in nutritive solution with ZnCl2 or CrCl3·6H2O at 0, 10, 50, 100, and 200 μg ml−1 for 5 weeks; all s...

Descripción completa

Detalles Bibliográficos
Autores: Caldelas, Cristina, Araus Ortega, José Luis, Febrero Ribas, Anna, Bort Pie, Jordi
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/120523
Acceso en línea:https://hdl.handle.net/2445/120523
Access Level:acceso abierto
Palabra clave:Crom
Plantes
Zinc
Chromium
Plants
id ES_3723d898d3bf6a46dae8d393e4a41adc
oai_identifier_str oai:recercat.cat:2445/120523
network_acronym_str ES
network_name_str España
repository_id_str
spelling Accumulation and toxic effects of chromium and zinc in Iris pseudacorus LCaldelas, CristinaAraus Ortega, José LuisFebrero Ribas, AnnaBort Pie, JordiCromPlantesZincChromiumPlantsZincThe aim of the present study was to examine the ability of I. pseudacorus L., an ornamental macrophyte of great potential for phytoremediation, to tolerate and accumulate Cr and Zn. Plants were grown in nutritive solution with ZnCl2 or CrCl3·6H2O at 0, 10, 50, 100, and 200 μg ml−1 for 5 weeks; all survived and continued growing. The accumulation of Cr and Zn increased with increasing supply in all plant tissues, to reach 59.97 mg Cr and 25.64 mg Zn in roots. Leaves retained a remarkable amount of Zn (14.2 mg). Growth inhibition reached 65% and 31% (dry weight) in response to Cr and Zn, respectively. The root:shoot dry matter partitioning (R/S) increased 80% at 100 μg ml−1 CrCl3. The most marked alterations in mineral content were in roots, where both metals decreased Al, Ca, Mg, Mn and S, and increased P concentration. No effect was noted on either leaf chlorophyll fluorescence kinetics (F v /F m and ΦPSII), or photosynthetic pigment content, signifying that the light phase of photosynthesis was not impaired. Carbon isotope composition (δ13C) was only slightly heavier, indicating that the reduction of carbon fixation was not the main cause for growth decrease. This was attributed to the restricted mineral uptake and to the increased demand of carbohydrates of damaged roots. Biomass allocation to rhizomes (Cr) or roots (Zn) contributes to heavy metal tolerance by limiting transpiration and increasing metal-storing tissues and the surface for water and cation uptake. This species is a good candidate for Cr rhizofiltration and Zn phytoextraction.Springer Verlag2018201820122018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion12 p.application/pdfhttps://hdl.handle.net/2445/120523Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1007/s11738-012-0956-4Acta Physiologiae Plantarum, 2012, vol. 34, num. 3, p. 1217-1228https://doi.org/10.1007/s11738-012-0956-4(c) Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, 2012info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1205232026-05-29T05:05:01Z
dc.title.none.fl_str_mv Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L
title Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L
spellingShingle Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L
Caldelas, Cristina
Crom
Plantes
Zinc
Chromium
Plants
Zinc
title_short Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L
title_full Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L
title_fullStr Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L
title_full_unstemmed Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L
title_sort Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L
dc.creator.none.fl_str_mv Caldelas, Cristina
Araus Ortega, José Luis
Febrero Ribas, Anna
Bort Pie, Jordi
author Caldelas, Cristina
author_facet Caldelas, Cristina
Araus Ortega, José Luis
Febrero Ribas, Anna
Bort Pie, Jordi
author_role author
author2 Araus Ortega, José Luis
Febrero Ribas, Anna
Bort Pie, Jordi
author2_role author
author
author
dc.subject.none.fl_str_mv Crom
Plantes
Zinc
Chromium
Plants
Zinc
topic Crom
Plantes
Zinc
Chromium
Plants
Zinc
description The aim of the present study was to examine the ability of I. pseudacorus L., an ornamental macrophyte of great potential for phytoremediation, to tolerate and accumulate Cr and Zn. Plants were grown in nutritive solution with ZnCl2 or CrCl3·6H2O at 0, 10, 50, 100, and 200 μg ml−1 for 5 weeks; all survived and continued growing. The accumulation of Cr and Zn increased with increasing supply in all plant tissues, to reach 59.97 mg Cr and 25.64 mg Zn in roots. Leaves retained a remarkable amount of Zn (14.2 mg). Growth inhibition reached 65% and 31% (dry weight) in response to Cr and Zn, respectively. The root:shoot dry matter partitioning (R/S) increased 80% at 100 μg ml−1 CrCl3. The most marked alterations in mineral content were in roots, where both metals decreased Al, Ca, Mg, Mn and S, and increased P concentration. No effect was noted on either leaf chlorophyll fluorescence kinetics (F v /F m and ΦPSII), or photosynthetic pigment content, signifying that the light phase of photosynthesis was not impaired. Carbon isotope composition (δ13C) was only slightly heavier, indicating that the reduction of carbon fixation was not the main cause for growth decrease. This was attributed to the restricted mineral uptake and to the increased demand of carbohydrates of damaged roots. Biomass allocation to rhizomes (Cr) or roots (Zn) contributes to heavy metal tolerance by limiting transpiration and increasing metal-storing tissues and the surface for water and cation uptake. This species is a good candidate for Cr rhizofiltration and Zn phytoextraction.
publishDate 2012
dc.date.none.fl_str_mv 2012
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/120523
url https://hdl.handle.net/2445/120523
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1007/s11738-012-0956-4
Acta Physiologiae Plantarum, 2012, vol. 34, num. 3, p. 1217-1228
https://doi.org/10.1007/s11738-012-0956-4
dc.rights.none.fl_str_mv (c) Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, 2012
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, 2012
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 12 p.
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406012422750208
score 15.812455

Similares en LA Referencia