Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms

Autores
Galatro, Andrea Verónica; Aguiar, María Belén; Malanga, Gabriela Fabiana; Puntarulo, Susana Angela
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The stratospheric ozone layer which attenuates solar ultraviolet-B (UV-B) irradiation (290-320 nm) is being depleted by pollutants such as chlorofluorocarbons. It has been postulated that if as a result of ozone loss, UV-B flux at the surface of the earth increases, negative impacts on biological organisms will be inevitable since UV-B radiation causes a multitude of physiological and biochemical changes in photosynthetic organisms. Among other parameters, photosynthesis is impaired, pigment composition is altered, and the expression of the genes which encode for antioxidants are induced. Ultraviolet light has been shown to be very effective in inducing lipid peroxidation of biological membranes, polyunsaturated fatty acids and phospholipid liposomes. It has been also reported that UV-B can destroy the natural liposoluble antioxidants and promote the formation of lipid peroxidation products. The photosynthetic pigments are affected and consequently the production of energy and reduction equivalents decrease, which in turn hampers CO2 incorporation into organic material. The pigments of the photosyntheticapparatus are affected by solar or artificial UV radiation. The carotenoids, which operate as protective pigments against excessive irradiation, are bleached and eventually the chlorophyll, vital for photosynthetic energy transformation, is destroyed. In this complex scenario, the mechanisms of biological effects of near UV appear to involve endogenous photosensitization and formation of reactive oxygen species (ROS). The aim of this work is to briefly summarize and update the data on the stress response of photosynthetic cells (both, algae and plants) after exposure to UV-B radiation, comparatively analyzing the effects on the rate of growth, chlorophyll content and chloroplast function described by our laboratory. The profile of the content of lipid-soluble and water-soluble antioxidants is described and analyzed in a general frame to search for adaptive responses.
Fil: Galatro, Andrea Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina
Fil: Aguiar, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina
Fil: Malanga, Gabriela Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina
Fil: Puntarulo, Susana Angela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina
Materia
UV-B
PHOTOSYNTHETIC ORGANISMS
ANTIOXIDANTS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/277823
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organismsGalatro, Andrea VerónicaAguiar, María BelénMalanga, Gabriela FabianaPuntarulo, Susana AngelaUV-BPHOTOSYNTHETIC ORGANISMSANTIOXIDANTShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The stratospheric ozone layer which attenuates solar ultraviolet-B (UV-B) irradiation (290-320 nm) is being depleted by pollutants such as chlorofluorocarbons. It has been postulated that if as a result of ozone loss, UV-B flux at the surface of the earth increases, negative impacts on biological organisms will be inevitable since UV-B radiation causes a multitude of physiological and biochemical changes in photosynthetic organisms. Among other parameters, photosynthesis is impaired, pigment composition is altered, and the expression of the genes which encode for antioxidants are induced. Ultraviolet light has been shown to be very effective in inducing lipid peroxidation of biological membranes, polyunsaturated fatty acids and phospholipid liposomes. It has been also reported that UV-B can destroy the natural liposoluble antioxidants and promote the formation of lipid peroxidation products. The photosynthetic pigments are affected and consequently the production of energy and reduction equivalents decrease, which in turn hampers CO2 incorporation into organic material. The pigments of the photosyntheticapparatus are affected by solar or artificial UV radiation. The carotenoids, which operate as protective pigments against excessive irradiation, are bleached and eventually the chlorophyll, vital for photosynthetic energy transformation, is destroyed. In this complex scenario, the mechanisms of biological effects of near UV appear to involve endogenous photosensitization and formation of reactive oxygen species (ROS). The aim of this work is to briefly summarize and update the data on the stress response of photosynthetic cells (both, algae and plants) after exposure to UV-B radiation, comparatively analyzing the effects on the rate of growth, chlorophyll content and chloroplast function described by our laboratory. The profile of the content of lipid-soluble and water-soluble antioxidants is described and analyzed in a general frame to search for adaptive responses.Fil: Galatro, Andrea Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; ArgentinaFil: Aguiar, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; ArgentinaFil: Malanga, Gabriela Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; ArgentinaFil: Puntarulo, Susana Angela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; ArgentinaResearch Trends2011-12info: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/11336/277823Galatro, Andrea Verónica; Aguiar, María Belén; Malanga, Gabriela Fabiana; Puntarulo, Susana Angela; Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms; Research Trends; Trends in Photochemistry and Photobiolgy; 13; 12-2011; 1-110972-4532CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.researchtrends.net/tia/title_issue.asp?id=15&in=0&vn=13&type=3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T13:51:51Zoai:ri.conicet.gov.ar:11336/277823instacron: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:34982025-12-23 13:51:51.656CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms
title Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms
spellingShingle Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms
Galatro, Andrea Verónica
UV-B
PHOTOSYNTHETIC ORGANISMS
ANTIOXIDANTS
title_short Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms
title_full Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms
title_fullStr Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms
title_full_unstemmed Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms
title_sort Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms
dc.creator.none.fl_str_mv Galatro, Andrea Verónica
Aguiar, María Belén
Malanga, Gabriela Fabiana
Puntarulo, Susana Angela
author Galatro, Andrea Verónica
author_facet Galatro, Andrea Verónica
Aguiar, María Belén
Malanga, Gabriela Fabiana
Puntarulo, Susana Angela
author_role author
author2 Aguiar, María Belén
Malanga, Gabriela Fabiana
Puntarulo, Susana Angela
author2_role author
author
author
dc.subject.none.fl_str_mv UV-B
PHOTOSYNTHETIC ORGANISMS
ANTIOXIDANTS
topic UV-B
PHOTOSYNTHETIC ORGANISMS
ANTIOXIDANTS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The stratospheric ozone layer which attenuates solar ultraviolet-B (UV-B) irradiation (290-320 nm) is being depleted by pollutants such as chlorofluorocarbons. It has been postulated that if as a result of ozone loss, UV-B flux at the surface of the earth increases, negative impacts on biological organisms will be inevitable since UV-B radiation causes a multitude of physiological and biochemical changes in photosynthetic organisms. Among other parameters, photosynthesis is impaired, pigment composition is altered, and the expression of the genes which encode for antioxidants are induced. Ultraviolet light has been shown to be very effective in inducing lipid peroxidation of biological membranes, polyunsaturated fatty acids and phospholipid liposomes. It has been also reported that UV-B can destroy the natural liposoluble antioxidants and promote the formation of lipid peroxidation products. The photosynthetic pigments are affected and consequently the production of energy and reduction equivalents decrease, which in turn hampers CO2 incorporation into organic material. The pigments of the photosyntheticapparatus are affected by solar or artificial UV radiation. The carotenoids, which operate as protective pigments against excessive irradiation, are bleached and eventually the chlorophyll, vital for photosynthetic energy transformation, is destroyed. In this complex scenario, the mechanisms of biological effects of near UV appear to involve endogenous photosensitization and formation of reactive oxygen species (ROS). The aim of this work is to briefly summarize and update the data on the stress response of photosynthetic cells (both, algae and plants) after exposure to UV-B radiation, comparatively analyzing the effects on the rate of growth, chlorophyll content and chloroplast function described by our laboratory. The profile of the content of lipid-soluble and water-soluble antioxidants is described and analyzed in a general frame to search for adaptive responses.
Fil: Galatro, Andrea Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina
Fil: Aguiar, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina
Fil: Malanga, Gabriela Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina
Fil: Puntarulo, Susana Angela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina
description The stratospheric ozone layer which attenuates solar ultraviolet-B (UV-B) irradiation (290-320 nm) is being depleted by pollutants such as chlorofluorocarbons. It has been postulated that if as a result of ozone loss, UV-B flux at the surface of the earth increases, negative impacts on biological organisms will be inevitable since UV-B radiation causes a multitude of physiological and biochemical changes in photosynthetic organisms. Among other parameters, photosynthesis is impaired, pigment composition is altered, and the expression of the genes which encode for antioxidants are induced. Ultraviolet light has been shown to be very effective in inducing lipid peroxidation of biological membranes, polyunsaturated fatty acids and phospholipid liposomes. It has been also reported that UV-B can destroy the natural liposoluble antioxidants and promote the formation of lipid peroxidation products. The photosynthetic pigments are affected and consequently the production of energy and reduction equivalents decrease, which in turn hampers CO2 incorporation into organic material. The pigments of the photosyntheticapparatus are affected by solar or artificial UV radiation. The carotenoids, which operate as protective pigments against excessive irradiation, are bleached and eventually the chlorophyll, vital for photosynthetic energy transformation, is destroyed. In this complex scenario, the mechanisms of biological effects of near UV appear to involve endogenous photosensitization and formation of reactive oxygen species (ROS). The aim of this work is to briefly summarize and update the data on the stress response of photosynthetic cells (both, algae and plants) after exposure to UV-B radiation, comparatively analyzing the effects on the rate of growth, chlorophyll content and chloroplast function described by our laboratory. The profile of the content of lipid-soluble and water-soluble antioxidants is described and analyzed in a general frame to search for adaptive responses.
publishDate 2011
dc.date.none.fl_str_mv 2011-12
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/11336/277823
Galatro, Andrea Verónica; Aguiar, María Belén; Malanga, Gabriela Fabiana; Puntarulo, Susana Angela; Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms; Research Trends; Trends in Photochemistry and Photobiolgy; 13; 12-2011; 1-11
0972-4532
CONICET Digital
CONICET
url http://hdl.handle.net/11336/277823
identifier_str_mv Galatro, Andrea Verónica; Aguiar, María Belén; Malanga, Gabriela Fabiana; Puntarulo, Susana Angela; Oxidative metabolism and antioxidant capacity associated to UV radiation effects in photosynthetic organisms; Research Trends; Trends in Photochemistry and Photobiolgy; 13; 12-2011; 1-11
0972-4532
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.researchtrends.net/tia/title_issue.asp?id=15&in=0&vn=13&type=3
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 Research Trends
publisher.none.fl_str_mv Research Trends
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 12.952241

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