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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/31086
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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 application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Academic Press Inc Elsevier Science |
publisher.none.fl_str_mv |
Academic Press Inc Elsevier Science |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |