Oxidative stress and antioxidant defenses in two green microalgae exposed to copper

The aim of this work was to assess the effects of 1 week copper exposure (6.2, 108, 210 and 414 μM) on Scenedesmus vacuolatus and Chlorella kessleri. The strains showed different susceptibility to copper. Copper content was determined in both strains by total X-ray reflection fluorescence analysis (...

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Autores principales:	Sabatini, S.E., Juárez, A.B., Eppis, M.R., Bianchi, L., Luquet, C.M., Ríos de Molina, M.d.C.
Formato:	JOUR
Materias:	Catalase Chlorella kessleri Copper content Lipid peroxidation Metabolic damage Oxidative stress Reduced glutathione Scenedesmus vacuolatus Superoxide dismutase Total reflection X-ray fluorescence (TXRF) chlorophyll a chlorophyll b copper antioxidant chlorophyll enzyme activity green alga lipid microalga peptide pollution effect pollution exposure protein X-ray fluorescence antioxidant responsive element article Chlorella oxidative stress Scenedesmus water contamination X ray fluorescence Algal Proteins Antioxidants Chelating Agents Chlorophyll Copper Edetic Acid Glutathione Lipid Peroxidation Malondialdehyde Models, Statistical Oxidation-Reduction Oxidative Stress Spectrometry, X-Ray Emission Superoxide Dismutase Parachlorella kessleri
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_01476513_v72_n4_p1200_Sabatini
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_01476513_v72_n4_p1200_Sabatini2023-10-03T15:00:44Z Oxidative stress and antioxidant defenses in two green microalgae exposed to copper Sabatini, S.E. Juárez, A.B. Eppis, M.R. Bianchi, L. Luquet, C.M. Ríos de Molina, M.d.C. Catalase Chlorella kessleri Copper content Lipid peroxidation Metabolic damage Oxidative stress Reduced glutathione Scenedesmus vacuolatus Superoxide dismutase Total reflection X-ray fluorescence (TXRF) chlorophyll a chlorophyll b copper antioxidant chlorophyll copper enzyme activity green alga lipid microalga peptide pollution effect pollution exposure protein X-ray fluorescence antioxidant responsive element article Chlorella green alga oxidative stress Scenedesmus water contamination X ray fluorescence Algal Proteins Antioxidants Catalase Chelating Agents Chlorella Chlorophyll Copper Edetic Acid Glutathione Lipid Peroxidation Malondialdehyde Models, Statistical Oxidation-Reduction Oxidative Stress Scenedesmus Spectrometry, X-Ray Emission Superoxide Dismutase Parachlorella kessleri Scenedesmus vacuolatus The aim of this work was to assess the effects of 1 week copper exposure (6.2, 108, 210 and 414 μM) on Scenedesmus vacuolatus and Chlorella kessleri. The strains showed different susceptibility to copper. Copper content was determined in both strains by total X-ray reflection fluorescence analysis (TXRF). In S. vacuolatus, the increase of medium copper concentration induced an augmentation of protein and MDA content, and a significant decrease in the chlorophyll a/chlorophyll b ratio. S. vacuolatus showed a significant increase of catalase activity in 210 and 414 μM of copper, and a significant increment of SOD activity and GSH content only in 414 μM of copper. On the contrary, C. kessleri did not show significant differences in these parameters between 6.2 and 108 μM of copper. Increased copper in the environment evokes oxidative stress and an increase in the antioxidant defenses of S. vacuolatus. © 2009 Elsevier Inc. All rights reserved. Fil:Sabatini, S.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Juárez, A.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Luquet, C.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ríos de Molina, M.d.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01476513_v72_n4_p1200_Sabatini
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Catalase Chlorella kessleri Copper content Lipid peroxidation Metabolic damage Oxidative stress Reduced glutathione Scenedesmus vacuolatus Superoxide dismutase Total reflection X-ray fluorescence (TXRF) chlorophyll a chlorophyll b copper antioxidant chlorophyll copper enzyme activity green alga lipid microalga peptide pollution effect pollution exposure protein X-ray fluorescence antioxidant responsive element article Chlorella green alga oxidative stress Scenedesmus water contamination X ray fluorescence Algal Proteins Antioxidants Catalase Chelating Agents Chlorella Chlorophyll Copper Edetic Acid Glutathione Lipid Peroxidation Malondialdehyde Models, Statistical Oxidation-Reduction Oxidative Stress Scenedesmus Spectrometry, X-Ray Emission Superoxide Dismutase Parachlorella kessleri Scenedesmus vacuolatus
spellingShingle	Catalase Chlorella kessleri Copper content Lipid peroxidation Metabolic damage Oxidative stress Reduced glutathione Scenedesmus vacuolatus Superoxide dismutase Total reflection X-ray fluorescence (TXRF) chlorophyll a chlorophyll b copper antioxidant chlorophyll copper enzyme activity green alga lipid microalga peptide pollution effect pollution exposure protein X-ray fluorescence antioxidant responsive element article Chlorella green alga oxidative stress Scenedesmus water contamination X ray fluorescence Algal Proteins Antioxidants Catalase Chelating Agents Chlorella Chlorophyll Copper Edetic Acid Glutathione Lipid Peroxidation Malondialdehyde Models, Statistical Oxidation-Reduction Oxidative Stress Scenedesmus Spectrometry, X-Ray Emission Superoxide Dismutase Parachlorella kessleri Scenedesmus vacuolatus Sabatini, S.E. Juárez, A.B. Eppis, M.R. Bianchi, L. Luquet, C.M. Ríos de Molina, M.d.C. Oxidative stress and antioxidant defenses in two green microalgae exposed to copper
topic_facet	Catalase Chlorella kessleri Copper content Lipid peroxidation Metabolic damage Oxidative stress Reduced glutathione Scenedesmus vacuolatus Superoxide dismutase Total reflection X-ray fluorescence (TXRF) chlorophyll a chlorophyll b copper antioxidant chlorophyll copper enzyme activity green alga lipid microalga peptide pollution effect pollution exposure protein X-ray fluorescence antioxidant responsive element article Chlorella green alga oxidative stress Scenedesmus water contamination X ray fluorescence Algal Proteins Antioxidants Catalase Chelating Agents Chlorella Chlorophyll Copper Edetic Acid Glutathione Lipid Peroxidation Malondialdehyde Models, Statistical Oxidation-Reduction Oxidative Stress Scenedesmus Spectrometry, X-Ray Emission Superoxide Dismutase Parachlorella kessleri Scenedesmus vacuolatus
description	The aim of this work was to assess the effects of 1 week copper exposure (6.2, 108, 210 and 414 μM) on Scenedesmus vacuolatus and Chlorella kessleri. The strains showed different susceptibility to copper. Copper content was determined in both strains by total X-ray reflection fluorescence analysis (TXRF). In S. vacuolatus, the increase of medium copper concentration induced an augmentation of protein and MDA content, and a significant decrease in the chlorophyll a/chlorophyll b ratio. S. vacuolatus showed a significant increase of catalase activity in 210 and 414 μM of copper, and a significant increment of SOD activity and GSH content only in 414 μM of copper. On the contrary, C. kessleri did not show significant differences in these parameters between 6.2 and 108 μM of copper. Increased copper in the environment evokes oxidative stress and an increase in the antioxidant defenses of S. vacuolatus. © 2009 Elsevier Inc. All rights reserved.
format	JOUR
author	Sabatini, S.E. Juárez, A.B. Eppis, M.R. Bianchi, L. Luquet, C.M. Ríos de Molina, M.d.C.
author_facet	Sabatini, S.E. Juárez, A.B. Eppis, M.R. Bianchi, L. Luquet, C.M. Ríos de Molina, M.d.C.
author_sort	Sabatini, S.E.
title	Oxidative stress and antioxidant defenses in two green microalgae exposed to copper
title_short	Oxidative stress and antioxidant defenses in two green microalgae exposed to copper
title_full	Oxidative stress and antioxidant defenses in two green microalgae exposed to copper
title_fullStr	Oxidative stress and antioxidant defenses in two green microalgae exposed to copper
title_full_unstemmed	Oxidative stress and antioxidant defenses in two green microalgae exposed to copper
title_sort	oxidative stress and antioxidant defenses in two green microalgae exposed to copper
url	http://hdl.handle.net/20.500.12110/paper_01476513_v72_n4_p1200_Sabatini
work_keys_str_mv	AT sabatinise oxidativestressandantioxidantdefensesintwogreenmicroalgaeexposedtocopper AT juarezab oxidativestressandantioxidantdefensesintwogreenmicroalgaeexposedtocopper AT eppismr oxidativestressandantioxidantdefensesintwogreenmicroalgaeexposedtocopper AT bianchil oxidativestressandantioxidantdefensesintwogreenmicroalgaeexposedtocopper AT luquetcm oxidativestressandantioxidantdefensesintwogreenmicroalgaeexposedtocopper AT riosdemolinamdc oxidativestressandantioxidantdefensesintwogreenmicroalgaeexposedtocopper
_version_	1807316841644687360

Oxidative stress and antioxidant defenses in two green microalgae exposed to copper

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