The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada

Autores
Carreras, Hebe Alejandra; Wannaz, Eduardo Daniel; Pérez, Carlos A.; Pignata, Maria Luisa
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Lichens incorporate heavy metals according to a selectivity sequence; therefore, their uptake rate can be affected when elements with a high affinity for cell wall exchange sites or that provoke harmful alterations to the metabolism of lichen thalli are present in the environment.The aim of this study was to examine the effect of urban pollutants on the accumulation of some heavy metals in Usnea amblyoclada.Lichen samples were transplanted for 1 month to both a polluted and a nonpolluted area in Córdoba, Argentina.They were then collected and soaked in tridistilled water or in solutions containing different concentrations of Cu, Ni, Pb, and Zn salts.The uptake of Cu2+, Ni2+, Zn2+, and Pb2+, and other parameters indicative of lichen damage were measured in all the lichen samples.The thalli retrieved from the polluted area showed significant increases in both the malonaldehyde content and the electrical conductivity of the water in which they had been immersed.These results indicate that the atmospheric pollutants could be responsible for the significant damage to the lichen’s cellular membranes, thus altering several mechanisms related to the uptake of heavy metals.Both the area of transplantation and the concentration of the metallic solutions had significant effects on the levels of Cu, Ni, and Pb measured in lichen thalli; however, no significant differences were observed in Zn concentrations.The highest uptakes corresponded to Pb and Cu, suggesting that they probably have a higher affinity with the lichen cell wall exchange sites.This study confirms the fact that, although lichens can be useful biological indicators, the physiological mechanisms involved in metal uptake should be carefully analyzed.Therefore, when estimating the heavy metal content of an environment, the competitive mechanism for cation uptake should be considered especially in areas where the presence of high levels of metals with a strong binding affinity is suspected.The presence of secondary products in the lichens could be responsible for the selective uptake of cations and for a possible tolerance to their presence.
Fil: Carreras, Hebe Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Wannaz, Eduardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Pérez, Carlos A.. Laboratorio Nacional de Luz Síncrotron-LNLS/CNPq; Brasil
Fil: Pignata, Maria Luisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31086

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spelling The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyocladaCarreras, Hebe AlejandraWannaz, Eduardo DanielPérez, Carlos A.Pignata, Maria Luisahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Lichens incorporate heavy metals according to a selectivity sequence; therefore, their uptake rate can be affected when elements with a high affinity for cell wall exchange sites or that provoke harmful alterations to the metabolism of lichen thalli are present in the environment.The aim of this study was to examine the effect of urban pollutants on the accumulation of some heavy metals in Usnea amblyoclada.Lichen samples were transplanted for 1 month to both a polluted and a nonpolluted area in Córdoba, Argentina.They were then collected and soaked in tridistilled water or in solutions containing different concentrations of Cu, Ni, Pb, and Zn salts.The uptake of Cu2+, Ni2+, Zn2+, and Pb2+, and other parameters indicative of lichen damage were measured in all the lichen samples.The thalli retrieved from the polluted area showed significant increases in both the malonaldehyde content and the electrical conductivity of the water in which they had been immersed.These results indicate that the atmospheric pollutants could be responsible for the significant damage to the lichen’s cellular membranes, thus altering several mechanisms related to the uptake of heavy metals.Both the area of transplantation and the concentration of the metallic solutions had significant effects on the levels of Cu, Ni, and Pb measured in lichen thalli; however, no significant differences were observed in Zn concentrations.The highest uptakes corresponded to Pb and Cu, suggesting that they probably have a higher affinity with the lichen cell wall exchange sites.This study confirms the fact that, although lichens can be useful biological indicators, the physiological mechanisms involved in metal uptake should be carefully analyzed.Therefore, when estimating the heavy metal content of an environment, the competitive mechanism for cation uptake should be considered especially in areas where the presence of high levels of metals with a strong binding affinity is suspected.The presence of secondary products in the lichens could be responsible for the selective uptake of cations and for a possible tolerance to their presence.Fil: Carreras, Hebe Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Wannaz, Eduardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Pérez, Carlos A.. Laboratorio Nacional de Luz Síncrotron-LNLS/CNPq; BrasilFil: Pignata, Maria Luisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaAcademic Press Inc Elsevier Science2005-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31086Pignata, Maria Luisa; Pérez, Carlos A.; Wannaz, Eduardo Daniel; Carreras, Hebe Alejandra; The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada; Academic Press Inc Elsevier Science; Environmental Research; 97; 1; 1-2005; 50-570013-9351CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013935104000957info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envres.2004.05.009info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:38Zoai:ri.conicet.gov.ar:11336/31086instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:26:39.255CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada
title The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada
spellingShingle The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada
Carreras, Hebe Alejandra
title_short The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada
title_full The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada
title_fullStr The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada
title_full_unstemmed The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada
title_sort The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada
dc.creator.none.fl_str_mv Carreras, Hebe Alejandra
Wannaz, Eduardo Daniel
Pérez, Carlos A.
Pignata, Maria Luisa
author Carreras, Hebe Alejandra
author_facet Carreras, Hebe Alejandra
Wannaz, Eduardo Daniel
Pérez, Carlos A.
Pignata, Maria Luisa
author_role author
author2 Wannaz, Eduardo Daniel
Pérez, Carlos A.
Pignata, Maria Luisa
author2_role author
author
author
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Lichens incorporate heavy metals according to a selectivity sequence; therefore, their uptake rate can be affected when elements with a high affinity for cell wall exchange sites or that provoke harmful alterations to the metabolism of lichen thalli are present in the environment.The aim of this study was to examine the effect of urban pollutants on the accumulation of some heavy metals in Usnea amblyoclada.Lichen samples were transplanted for 1 month to both a polluted and a nonpolluted area in Córdoba, Argentina.They were then collected and soaked in tridistilled water or in solutions containing different concentrations of Cu, Ni, Pb, and Zn salts.The uptake of Cu2+, Ni2+, Zn2+, and Pb2+, and other parameters indicative of lichen damage were measured in all the lichen samples.The thalli retrieved from the polluted area showed significant increases in both the malonaldehyde content and the electrical conductivity of the water in which they had been immersed.These results indicate that the atmospheric pollutants could be responsible for the significant damage to the lichen’s cellular membranes, thus altering several mechanisms related to the uptake of heavy metals.Both the area of transplantation and the concentration of the metallic solutions had significant effects on the levels of Cu, Ni, and Pb measured in lichen thalli; however, no significant differences were observed in Zn concentrations.The highest uptakes corresponded to Pb and Cu, suggesting that they probably have a higher affinity with the lichen cell wall exchange sites.This study confirms the fact that, although lichens can be useful biological indicators, the physiological mechanisms involved in metal uptake should be carefully analyzed.Therefore, when estimating the heavy metal content of an environment, the competitive mechanism for cation uptake should be considered especially in areas where the presence of high levels of metals with a strong binding affinity is suspected.The presence of secondary products in the lichens could be responsible for the selective uptake of cations and for a possible tolerance to their presence.
Fil: Carreras, Hebe Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Wannaz, Eduardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Pérez, Carlos A.. Laboratorio Nacional de Luz Síncrotron-LNLS/CNPq; Brasil
Fil: Pignata, Maria Luisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
description Lichens incorporate heavy metals according to a selectivity sequence; therefore, their uptake rate can be affected when elements with a high affinity for cell wall exchange sites or that provoke harmful alterations to the metabolism of lichen thalli are present in the environment.The aim of this study was to examine the effect of urban pollutants on the accumulation of some heavy metals in Usnea amblyoclada.Lichen samples were transplanted for 1 month to both a polluted and a nonpolluted area in Córdoba, Argentina.They were then collected and soaked in tridistilled water or in solutions containing different concentrations of Cu, Ni, Pb, and Zn salts.The uptake of Cu2+, Ni2+, Zn2+, and Pb2+, and other parameters indicative of lichen damage were measured in all the lichen samples.The thalli retrieved from the polluted area showed significant increases in both the malonaldehyde content and the electrical conductivity of the water in which they had been immersed.These results indicate that the atmospheric pollutants could be responsible for the significant damage to the lichen’s cellular membranes, thus altering several mechanisms related to the uptake of heavy metals.Both the area of transplantation and the concentration of the metallic solutions had significant effects on the levels of Cu, Ni, and Pb measured in lichen thalli; however, no significant differences were observed in Zn concentrations.The highest uptakes corresponded to Pb and Cu, suggesting that they probably have a higher affinity with the lichen cell wall exchange sites.This study confirms the fact that, although lichens can be useful biological indicators, the physiological mechanisms involved in metal uptake should be carefully analyzed.Therefore, when estimating the heavy metal content of an environment, the competitive mechanism for cation uptake should be considered especially in areas where the presence of high levels of metals with a strong binding affinity is suspected.The presence of secondary products in the lichens could be responsible for the selective uptake of cations and for a possible tolerance to their presence.
publishDate 2005
dc.date.none.fl_str_mv 2005-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/31086
Pignata, Maria Luisa; Pérez, Carlos A.; Wannaz, Eduardo Daniel; Carreras, Hebe Alejandra; The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada; Academic Press Inc Elsevier Science; Environmental Research; 97; 1; 1-2005; 50-57
0013-9351
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31086
identifier_str_mv Pignata, Maria Luisa; Pérez, Carlos A.; Wannaz, Eduardo Daniel; Carreras, Hebe Alejandra; The role of urban air pollutants on the heavy metals accumulation performance of Usnea amblyoclada; Academic Press Inc Elsevier Science; Environmental Research; 97; 1; 1-2005; 50-57
0013-9351
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013935104000957
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envres.2004.05.009
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
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dc.publisher.none.fl_str_mv Academic Press Inc Elsevier Science
publisher.none.fl_str_mv Academic Press Inc Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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