Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides

The halophytic shrub Halimione portulacoides is known to be capable of growth in soils containing extremely high concentrations of Zn. This study evaluated in detail the tolerance and accumulation potential of H. portulacoides under moderate and high external Zn levels. A greenhouse experiment was c...

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Autores: Cambrollé Silva, Jesús, Mancilla Leytón, Juan Manuel, Muñoz Vallés, Sara, Luque Palomo, María Teresa, Figueroa Clemente, Manuel Enrique
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/167752
Acceso en línea:https://hdl.handle.net/11441/167752
https://doi.org/10.1016/j.chemosphere.2011.10.039
Access Level:acceso abierto
Palabra clave:Halimione portulacoides
photosynthesis
phytoremediation
Zinc
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spelling Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoidesCambrollé Silva, JesúsMancilla Leytón, Juan ManuelMuñoz Vallés, SaraLuque Palomo, María TeresaFigueroa Clemente, Manuel EnriqueHalimione portulacoidesphotosynthesisphytoremediationZincThe halophytic shrub Halimione portulacoides is known to be capable of growth in soils containing extremely high concentrations of Zn. This study evaluated in detail the tolerance and accumulation potential of H. portulacoides under moderate and high external Zn levels. A greenhouse experiment was conducted in order to investigate the effects of a range of Zn concentrations (0–130 mmol L−1) on growth and photosynthetic performance by measuring relative growth rate, total leaf area, specific leaf area, gas exchange, chlorophyll fluorescence parameters and photosynthetic pigment concentrations. We also determined the total zinc, nitrogen, phosphorus, calcium, magnesium, sodium, potassium, iron and copper concentrations in the plant tissues. H. portulacoides demonstrated hypertolerance to Zn stress, since it survived with leaf concentrations of up to 2300 mg Zn kg−1 dry mass, when treated with 130 mmol Zn L−1. Zinc concentrations greater than 70 mmol L−1 in the nutrient solution negatively affected plant growth, in all probability due to the recorded decline in net photosynthesis rate. Our results indicate that the Zn-induced decline in the photosynthetic function of H. portulacoides may be attributed to the adverse effect of the high concentration of the metal on photosynthetic electron transport. Growth parameters were virtually unaffected by leaf tissue concentrations as high as 1500 mg Zn kg−1 dry mass, demonstrating the strong capability of H. portulacoides to protect itself against toxic Zn concentrations. The results of our study indicate that this salt-marsh shrub may represent a valuable tool in the restoration of Zn-polluted areas.ElsevierBiología Vegetal y EcologíaAgronomía2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/167752https://doi.org/10.1016/j.chemosphere.2011.10.039reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésChemosphere, 86 (9), 867-874.info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1677522026-06-17T12:51:07Z
dc.title.none.fl_str_mv Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides
title Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides
spellingShingle Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides
Cambrollé Silva, Jesús
Halimione portulacoides
photosynthesis
phytoremediation
Zinc
title_short Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides
title_full Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides
title_fullStr Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides
title_full_unstemmed Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides
title_sort Zinc tolerance and accumulation in the salt-marsh shrub Halimione portulacoides
dc.creator.none.fl_str_mv Cambrollé Silva, Jesús
Mancilla Leytón, Juan Manuel
Muñoz Vallés, Sara
Luque Palomo, María Teresa
Figueroa Clemente, Manuel Enrique
author Cambrollé Silva, Jesús
author_facet Cambrollé Silva, Jesús
Mancilla Leytón, Juan Manuel
Muñoz Vallés, Sara
Luque Palomo, María Teresa
Figueroa Clemente, Manuel Enrique
author_role author
author2 Mancilla Leytón, Juan Manuel
Muñoz Vallés, Sara
Luque Palomo, María Teresa
Figueroa Clemente, Manuel Enrique
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Biología Vegetal y Ecología
Agronomía
dc.subject.none.fl_str_mv Halimione portulacoides
photosynthesis
phytoremediation
Zinc
topic Halimione portulacoides
photosynthesis
phytoremediation
Zinc
description The halophytic shrub Halimione portulacoides is known to be capable of growth in soils containing extremely high concentrations of Zn. This study evaluated in detail the tolerance and accumulation potential of H. portulacoides under moderate and high external Zn levels. A greenhouse experiment was conducted in order to investigate the effects of a range of Zn concentrations (0–130 mmol L−1) on growth and photosynthetic performance by measuring relative growth rate, total leaf area, specific leaf area, gas exchange, chlorophyll fluorescence parameters and photosynthetic pigment concentrations. We also determined the total zinc, nitrogen, phosphorus, calcium, magnesium, sodium, potassium, iron and copper concentrations in the plant tissues. H. portulacoides demonstrated hypertolerance to Zn stress, since it survived with leaf concentrations of up to 2300 mg Zn kg−1 dry mass, when treated with 130 mmol Zn L−1. Zinc concentrations greater than 70 mmol L−1 in the nutrient solution negatively affected plant growth, in all probability due to the recorded decline in net photosynthesis rate. Our results indicate that the Zn-induced decline in the photosynthetic function of H. portulacoides may be attributed to the adverse effect of the high concentration of the metal on photosynthetic electron transport. Growth parameters were virtually unaffected by leaf tissue concentrations as high as 1500 mg Zn kg−1 dry mass, demonstrating the strong capability of H. portulacoides to protect itself against toxic Zn concentrations. The results of our study indicate that this salt-marsh shrub may represent a valuable tool in the restoration of Zn-polluted areas.
publishDate 2012
dc.date.none.fl_str_mv 2012
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/11441/167752
https://doi.org/10.1016/j.chemosphere.2011.10.039
url https://hdl.handle.net/11441/167752
https://doi.org/10.1016/j.chemosphere.2011.10.039
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Chemosphere, 86 (9), 867-874.
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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