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Effect of lead on photosynthetic pigments, antioxidant responses, metabolomics, thalli morphology and cell ultrastructure of Iridaea cordata (Rhodophyta) from Antarctica

2025-01Artigo científico Acesso aberto
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datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg13:Ação Climática
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorTrentin, Riccardo
dc.contributor.authorNai, Ilaria
dc.contributor.authorSchumann, Sophia
dc.contributor.authorSantovito, Gianfranco
dc.contributor.authorMoschin, Emanuela
dc.contributor.authorCustódio, Luísa
dc.contributor.authorMoro, Isabella
dc.date.accessioned2026-05-06T13:49:11Z
dc.date.available2026-05-06T13:49:11Z
dc.date.issued2025-01
dc.description.abstractOver the past decades, the concern about lead pollution in marine environments has increased due to its remarkable toxicity, even at low concentrations. Lead is one of the significant contaminants arising from human activities in Antarctica. However, its effects on polar photosynthetic organisms are poorly known. This work aims to evaluate the effects of two different environmental concentrations of lead (10 μg/L and 50 μg/L) on pigment content, antioxidant enzyme activities (catalase, superoxide dismutase, ascorbate peroxidase and glutathione–S–transferase), metabolome, thalli morphology and cell ultrastructure of the red seaweed Iridaea cordata (Turner) Bory from Terra Nova Bay (Ross Sea, Antarctica). The results highlighted that lead exposure decreased phycocyanin and phycoerythrin content, starting from 10 μg/L, while induced carotenoid accumulation at 50 μg/ L. Catalase, ascorbate peroxidase, and superoxide dismutase activities generally increased after lead exposure and distinct biochemical features were identified in the control and treatment groups. Further lead–related effects on cell ultrastructure comprised floridean starch accumulation and plastoglobuli formation. Overall, our results suggested that the enhanced formation of reactive oxygen species in response to lead altered the photosynthetic pigment pattern, antioxidant defenses, metabolome and ultrastructure of I. cordata.eng
dc.description.sponsorship72906-87-7; 9001-05-2; 479-61-8; 50812-37-8
dc.identifier.doi10.1016/j.cbpc.2024.110063
dc.identifier.issn1532-0456
dc.identifier.urihttp://hdl.handle.net/10400.1/28865
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationNutrients and particulate matter dynamics - exchanges between a COAstal LAgoon and the adjacent ocean through a multiple inlet system: the case of Ria Formosa, south of Portugal - COALA
dc.relation.ispartofComparative Biochemistry and Physiology Part C: Toxicology & Pharmacology
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectIridaea cordata
dc.subjectMetal pollution
dc.subjectPhotosynthetic pigments
dc.subjectAntioxidant activity
dc.subjectU ntargeted metabolomics
dc.subjectUltrastructure
dc.titleEffect of lead on photosynthetic pigments, antioxidant responses, metabolomics, thalli morphology and cell ultrastructure of Iridaea cordata (Rhodophyta) from Antarcticaeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberPTDC/MAR/114217/2009
oaire.awardTitleNutrients and particulate matter dynamics - exchanges between a COAstal LAgoon and the adjacent ocean through a multiple inlet system: the case of Ria Formosa, south of Portugal - COALA
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F114217%2F2009/PT
oaire.citation.startPage110063
oaire.citation.titleComparative Biochemistry and Physiology Part C: Toxicology and Pharmacology
oaire.citation.volume287
oaire.fundingStream3599-PPCDT
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCustódio
person.givenNameLuísa
person.identifier.ciencia-id791B-C560-AEA2
person.identifier.orcid0000-0003-4338-7703
person.identifier.ridM-6101-2013
person.identifier.scopus-author-id15831018900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublicationf9cfed0f-6b67-413e-988c-ac7397183471
relation.isAuthorOfPublication.latestForDiscoveryf9cfed0f-6b67-413e-988c-ac7397183471
relation.isProjectOfPublication92fe5290-b5de-4957-ac65-cab09b487a6d
relation.isProjectOfPublication.latestForDiscovery92fe5290-b5de-4957-ac65-cab09b487a6d

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