Oxidative stress in Microcystis aeruginosa as a consequence of global climate change

Autores
Hernando, Marcelo; Houghton, Christian; Giannuzzi, Leda; Krock, Bernd; Andrinolo, Dario; Malanga, Gabriela Fabiana
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cyanobacteria are phototrophic organisms with great ecological and economical importance.Species of the genus Microcystis are known for their potential ability to synthesize toxins, notably microcystins.There is a growing interest in the evaluation of oxidative stress in relation to the impact of global climate change on natural ecosystems in different trophic levels. Several studies have focused on the analysis of organismal responses to mitigate the damage by controlling the generation of reactive oxygen species. Variations in environmentalfactors caused by climate change generate a situation of oxidative damage in Microcystis aeruginosa as a direct or indirect consequence. In this study we evaluate the effects of ultraviolet radiation and temperature on physiological and biochemical responses of a native M. aeruginosa (strain CAAT 2005-3). The results from the exposure to ultraviolet radiation doses and temperature changes suggest a high ability of M. aeruginosa to detect a potential stress situation as a consequence of reactive species production and to rapidly initiate antioxidant defenses. Increased catalase activity is an antioxidant protection mechanism in M. aeruginosa for short and long term exposure to different changes in environmental conditions. However, we found a ultraviolet-B radiation threshold dose above which oxidative stress exceeds the antioxidant protection and damage occurs. In additionour results are in agreement with recent findings suggesting that microcystins may act as protein-modulating metabolites and protection against reactive oxygen species.It is concluded that cyanobacteria have adaptative mechanisms that could lead to the replacement of species highly susceptible to oxidative stress by others with a higher system of antioxidant protection.
Fil: Hernando, Marcelo. Comisión Nacional de Energía Atómica; Argentina
Fil: Houghton, Christian. Comisión Nacional de Energía Atómica; Argentina
Fil: Giannuzzi, Leda. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Univarsidad de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Area de Toxicología; Argentina
Fil: Krock, Bernd. Alfred Wegener Institute; Alemania
Fil: Andrinolo, Dario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas; Argentina
Fil: Malanga, Gabriela Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Bioquímica y Medicina Molecular. Universidad de Buenos Aires. Facultad Medicina. Instituto de Bioquímica y Medicina Molecular; Argentina
Materia
Cianobacteria
Microcystis aeruginosa
UV radiation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/49591
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/49591
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Oxidative stress in Microcystis aeruginosa as a consequence of global climate changeHernando, MarceloHoughton, ChristianGiannuzzi, LedaKrock, BerndAndrinolo, DarioMalanga, Gabriela FabianaCianobacteriaMicrocystis aeruginosaUV radiationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Cyanobacteria are phototrophic organisms with great ecological and economical importance.Species of the genus Microcystis are known for their potential ability to synthesize toxins, notably microcystins.There is a growing interest in the evaluation of oxidative stress in relation to the impact of global climate change on natural ecosystems in different trophic levels. Several studies have focused on the analysis of organismal responses to mitigate the damage by controlling the generation of reactive oxygen species. Variations in environmentalfactors caused by climate change generate a situation of oxidative damage in Microcystis aeruginosa as a direct or indirect consequence. In this study we evaluate the effects of ultraviolet radiation and temperature on physiological and biochemical responses of a native M. aeruginosa (strain CAAT 2005-3). The results from the exposure to ultraviolet radiation doses and temperature changes suggest a high ability of M. aeruginosa to detect a potential stress situation as a consequence of reactive species production and to rapidly initiate antioxidant defenses. Increased catalase activity is an antioxidant protection mechanism in M. aeruginosa for short and long term exposure to different changes in environmental conditions. However, we found a ultraviolet-B radiation threshold dose above which oxidative stress exceeds the antioxidant protection and damage occurs. In additionour results are in agreement with recent findings suggesting that microcystins may act as protein-modulating metabolites and protection against reactive oxygen species.It is concluded that cyanobacteria have adaptative mechanisms that could lead to the replacement of species highly susceptible to oxidative stress by others with a higher system of antioxidant protection.Fil: Hernando, Marcelo. Comisión Nacional de Energía Atómica; ArgentinaFil: Houghton, Christian. Comisión Nacional de Energía Atómica; ArgentinaFil: Giannuzzi, Leda. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Univarsidad de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Area de Toxicología; ArgentinaFil: Krock, Bernd. Alfred Wegener Institute; AlemaniaFil: Andrinolo, Dario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas; ArgentinaFil: Malanga, Gabriela Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Bioquímica y Medicina Molecular. Universidad de Buenos Aires. Facultad Medicina. Instituto de Bioquímica y Medicina Molecular; ArgentinaSociedad Latinoamericana de Microscopía Electrónica; Centro Regional de Investigaciones Científicas y Tecnológicas2016-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/49591Hernando, Marcelo; Houghton, Christian; Giannuzzi, Leda; Krock, Bernd; Andrinolo, Dario; et al.; Oxidative stress in Microcystis aeruginosa as a consequence of global climate change; Sociedad Latinoamericana de Microscopía Electrónica; Centro Regional de Investigaciones Científicas y Tecnológicas; Biocell; 40; 1; 10-2016; 23-250327-9545CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mendoza-conicet.gob.ar/portal/biocell/vol/40_I_1.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:23:45Zoai:ri.conicet.gov.ar:11336/49591instacron: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 10:23:46.222CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Oxidative stress in Microcystis aeruginosa as a consequence of global climate change
title Oxidative stress in Microcystis aeruginosa as a consequence of global climate change
spellingShingle Oxidative stress in Microcystis aeruginosa as a consequence of global climate change
Hernando, Marcelo
Cianobacteria
Microcystis aeruginosa
UV radiation
title_short Oxidative stress in Microcystis aeruginosa as a consequence of global climate change
title_full Oxidative stress in Microcystis aeruginosa as a consequence of global climate change
title_fullStr Oxidative stress in Microcystis aeruginosa as a consequence of global climate change
title_full_unstemmed Oxidative stress in Microcystis aeruginosa as a consequence of global climate change
title_sort Oxidative stress in Microcystis aeruginosa as a consequence of global climate change
dc.creator.none.fl_str_mv Hernando, Marcelo
Houghton, Christian
Giannuzzi, Leda
Krock, Bernd
Andrinolo, Dario
Malanga, Gabriela Fabiana
author Hernando, Marcelo
author_facet Hernando, Marcelo
Houghton, Christian
Giannuzzi, Leda
Krock, Bernd
Andrinolo, Dario
Malanga, Gabriela Fabiana
author_role author
author2 Houghton, Christian
Giannuzzi, Leda
Krock, Bernd
Andrinolo, Dario
Malanga, Gabriela Fabiana
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Cianobacteria
Microcystis aeruginosa
UV radiation
topic Cianobacteria
Microcystis aeruginosa
UV radiation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Cyanobacteria are phototrophic organisms with great ecological and economical importance.Species of the genus Microcystis are known for their potential ability to synthesize toxins, notably microcystins.There is a growing interest in the evaluation of oxidative stress in relation to the impact of global climate change on natural ecosystems in different trophic levels. Several studies have focused on the analysis of organismal responses to mitigate the damage by controlling the generation of reactive oxygen species. Variations in environmentalfactors caused by climate change generate a situation of oxidative damage in Microcystis aeruginosa as a direct or indirect consequence. In this study we evaluate the effects of ultraviolet radiation and temperature on physiological and biochemical responses of a native M. aeruginosa (strain CAAT 2005-3). The results from the exposure to ultraviolet radiation doses and temperature changes suggest a high ability of M. aeruginosa to detect a potential stress situation as a consequence of reactive species production and to rapidly initiate antioxidant defenses. Increased catalase activity is an antioxidant protection mechanism in M. aeruginosa for short and long term exposure to different changes in environmental conditions. However, we found a ultraviolet-B radiation threshold dose above which oxidative stress exceeds the antioxidant protection and damage occurs. In additionour results are in agreement with recent findings suggesting that microcystins may act as protein-modulating metabolites and protection against reactive oxygen species.It is concluded that cyanobacteria have adaptative mechanisms that could lead to the replacement of species highly susceptible to oxidative stress by others with a higher system of antioxidant protection.
Fil: Hernando, Marcelo. Comisión Nacional de Energía Atómica; Argentina
Fil: Houghton, Christian. Comisión Nacional de Energía Atómica; Argentina
Fil: Giannuzzi, Leda. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Univarsidad de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Area de Toxicología; Argentina
Fil: Krock, Bernd. Alfred Wegener Institute; Alemania
Fil: Andrinolo, Dario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas; Argentina
Fil: Malanga, Gabriela Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Bioquímica y Medicina Molecular. Universidad de Buenos Aires. Facultad Medicina. Instituto de Bioquímica y Medicina Molecular; Argentina
description Cyanobacteria are phototrophic organisms with great ecological and economical importance.Species of the genus Microcystis are known for their potential ability to synthesize toxins, notably microcystins.There is a growing interest in the evaluation of oxidative stress in relation to the impact of global climate change on natural ecosystems in different trophic levels. Several studies have focused on the analysis of organismal responses to mitigate the damage by controlling the generation of reactive oxygen species. Variations in environmentalfactors caused by climate change generate a situation of oxidative damage in Microcystis aeruginosa as a direct or indirect consequence. In this study we evaluate the effects of ultraviolet radiation and temperature on physiological and biochemical responses of a native M. aeruginosa (strain CAAT 2005-3). The results from the exposure to ultraviolet radiation doses and temperature changes suggest a high ability of M. aeruginosa to detect a potential stress situation as a consequence of reactive species production and to rapidly initiate antioxidant defenses. Increased catalase activity is an antioxidant protection mechanism in M. aeruginosa for short and long term exposure to different changes in environmental conditions. However, we found a ultraviolet-B radiation threshold dose above which oxidative stress exceeds the antioxidant protection and damage occurs. In additionour results are in agreement with recent findings suggesting that microcystins may act as protein-modulating metabolites and protection against reactive oxygen species.It is concluded that cyanobacteria have adaptative mechanisms that could lead to the replacement of species highly susceptible to oxidative stress by others with a higher system of antioxidant protection.
publishDate 2016
dc.date.none.fl_str_mv 2016-10
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/11336/49591
Hernando, Marcelo; Houghton, Christian; Giannuzzi, Leda; Krock, Bernd; Andrinolo, Dario; et al.; Oxidative stress in Microcystis aeruginosa as a consequence of global climate change; Sociedad Latinoamericana de Microscopía Electrónica; Centro Regional de Investigaciones Científicas y Tecnológicas; Biocell; 40; 1; 10-2016; 23-25
0327-9545
CONICET Digital
CONICET
url http://hdl.handle.net/11336/49591
identifier_str_mv Hernando, Marcelo; Houghton, Christian; Giannuzzi, Leda; Krock, Bernd; Andrinolo, Dario; et al.; Oxidative stress in Microcystis aeruginosa as a consequence of global climate change; Sociedad Latinoamericana de Microscopía Electrónica; Centro Regional de Investigaciones Científicas y Tecnológicas; Biocell; 40; 1; 10-2016; 23-25
0327-9545
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.mendoza-conicet.gob.ar/portal/biocell/vol/40_I_1.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Sociedad Latinoamericana de Microscopía Electrónica; Centro Regional de Investigaciones Científicas y Tecnológicas
publisher.none.fl_str_mv Sociedad Latinoamericana de Microscopía Electrónica; Centro Regional de Investigaciones Científicas y Tecnológicas
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv 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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score 13.070432

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