Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis

Pollution by potentially toxic elements (PTEs) such as Pb and Zn threatens seaweed populations, which sustain marine coastal ecosystems. Understanding how seaweeds uptake and release these pollutants is crucial to assessing their impact. To address this, we analyzed the subcellular location of PTEs...

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Authors: Fernández Escribano, José Ángel, Vázquez Arias, Antón, Rodríguez Prieto, Conxi, Yamada, Yosuke, Ito, Motoo, Aboal Viñas, Jesús
Format: article
Publication Date:2025
Country:España
Institution:Universidad de Santiago de Compostela (USC)
Repository:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Language:English
OAI Identifier:oai:minerva.usc.gal:10347/43735
Online Access:https://hdl.handle.net/10347/43735
Access Level:Open access
Keyword:Marine pollution
Heavy metals
PTEs
Macroalgae
Fucus vesiculosus
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spelling Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysisFernández Escribano, José ÁngelVázquez Arias, AntónRodríguez Prieto, ConxiYamada, YosukeIto, MotooAboal Viñas, JesúsMarine pollutionHeavy metalsPTEsMacroalgaeFucus vesiculosusPollution by potentially toxic elements (PTEs) such as Pb and Zn threatens seaweed populations, which sustain marine coastal ecosystems. Understanding how seaweeds uptake and release these pollutants is crucial to assessing their impact. To address this, we analyzed the subcellular location of PTEs in transplanted thalli of the brown seaweed Fucus vesiculosus using nanoscale secondary ion mass spectrometry (NanoSIMS). Lead accumulated primarily in the cell wall, with minimal intracellular localization. Its concentrations increased slightly upon exposure at a polluted site and decreased at an unpolluted site, reflecting an equilibrium between environmental bioavailability and cell wall binding sites. In contrast, metabolically important PTEs such as Mn and Zn exhibited higher intracellular concentrations that responded similarly when transplanted to a different site regardless of its pollution levels, likely as a stress response to changes in environmental conditions. PTEs without metabolic functions, such as Pb, are not internalized and remain in equilibrium with the environment, whereas intracellular essential PTEs are metabolically regulated. This contrast explains why PTEs differ in toxicity to seaweeds, advancing our understanding of their vulnerability to pollution and enabling more effective strategies to protect the ecosystems they support.ElsevierUniversidade de Santiago de Compostela. Departamento de Bioloxía FuncionalUniversidade de Santiago de Compostela. Centro Interdisciplinar de Investigación en Tecnoloxías Ambientais (CRETUS)20252025-08-2320252025-08-23journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10347/43735reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostelainstname:Universidad de Santiago de Compostela (USC)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2022-142802NB-I00open accesshttp://purl.org/coar/access_right/c_abf2© 2025 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:minerva.usc.gal:10347/437352026-06-15T12:47:27Z
dc.title.none.fl_str_mv Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis
title Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis
spellingShingle Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis
Fernández Escribano, José Ángel
Marine pollution
Heavy metals
PTEs
Macroalgae
Fucus vesiculosus
title_short Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis
title_full Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis
title_fullStr Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis
title_full_unstemmed Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis
title_sort Deciphering uptake mechanisms of potentially toxic elements in seaweeds using high resolution imaging analysis
dc.creator.none.fl_str_mv Fernández Escribano, José Ángel
Vázquez Arias, Antón
Rodríguez Prieto, Conxi
Yamada, Yosuke
Ito, Motoo
Aboal Viñas, Jesús
author Fernández Escribano, José Ángel
author_facet Fernández Escribano, José Ángel
Vázquez Arias, Antón
Rodríguez Prieto, Conxi
Yamada, Yosuke
Ito, Motoo
Aboal Viñas, Jesús
author_role author
author2 Vázquez Arias, Antón
Rodríguez Prieto, Conxi
Yamada, Yosuke
Ito, Motoo
Aboal Viñas, Jesús
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de Santiago de Compostela. Departamento de Bioloxía Funcional
Universidade de Santiago de Compostela. Centro Interdisciplinar de Investigación en Tecnoloxías Ambientais (CRETUS)
dc.subject.none.fl_str_mv Marine pollution
Heavy metals
PTEs
Macroalgae
Fucus vesiculosus
topic Marine pollution
Heavy metals
PTEs
Macroalgae
Fucus vesiculosus
description Pollution by potentially toxic elements (PTEs) such as Pb and Zn threatens seaweed populations, which sustain marine coastal ecosystems. Understanding how seaweeds uptake and release these pollutants is crucial to assessing their impact. To address this, we analyzed the subcellular location of PTEs in transplanted thalli of the brown seaweed Fucus vesiculosus using nanoscale secondary ion mass spectrometry (NanoSIMS). Lead accumulated primarily in the cell wall, with minimal intracellular localization. Its concentrations increased slightly upon exposure at a polluted site and decreased at an unpolluted site, reflecting an equilibrium between environmental bioavailability and cell wall binding sites. In contrast, metabolically important PTEs such as Mn and Zn exhibited higher intracellular concentrations that responded similarly when transplanted to a different site regardless of its pollution levels, likely as a stress response to changes in environmental conditions. PTEs without metabolic functions, such as Pb, are not internalized and remain in equilibrium with the environment, whereas intracellular essential PTEs are metabolically regulated. This contrast explains why PTEs differ in toxicity to seaweeds, advancing our understanding of their vulnerability to pollution and enabling more effective strategies to protect the ecosystems they support.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-08-23
2025
2025-08-23
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10347/43735
url https://hdl.handle.net/10347/43735
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2022-142802NB-I00
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname:Universidad de Santiago de Compostela (USC)
instname_str Universidad de Santiago de Compostela (USC)
reponame_str Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
collection Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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