Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlin...

Autores: Causin, Humberto F.; Cá, Federico D.; Spotorno, Viviana Graciela; Palacios, María B.; Martínez Tosar, Leandro; Burrieza, Hernán F.; Tossi, Vanesa E.
Año de publicación: 2025
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: Chenopodium quinoa Willd. is a betalainic crop with remarkable tolerance to extreme environmental conditions. Despite numerous varieties grow at high altitudes, where UV-B radiation is intense, research on the effects of UV-B stress on this and related species is very scarce. In the present work we aimed to determine whether UV-B radiation induces the production of betalains, and evaluated the role of these pigments and other key antioxidants in preventing oxidative damage, in seedlings of C. quinoa (ecotypes CICA and Villarrica) and its close relative C. berlandieri Moq., grown in darkness and after exposure to an acute pulse of UV-B radiation (24 h, 2.5 W m−2). UV-B significantly increased MDA accumulation and induced the production of betalains (particularly betacyanins), polyphenols and UV-B-absorbing compounds in all seedlings tested. The activity of antioxidant enzymes showed comparatively minor changes, with the exception of GPOX which consistently decreased after UV-B irradiation. The degree of oxidative damage was not correlated to the concentration of betalains present in the tissues at the end of the treatment. However, when pigment synthesis was stimulated by short white light pulses prior to UV-B irradiation, the increase in MDA levels could be prevented in C. berlandieri seedlings despite no major changes occurred in most of the remaining metabolites evaluated, suggesting that betalains have an important role in controlling oxidative damage in this species. In contrast, the presence of high levels of polyphenolic compounds rather than the accumulation of betalains contributed to improved UV-B tolerance in C. quinoa seedlings.
Instituto de Recursos Biológicos
Fil: Causin, Humberto F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina.
Fil: Cá, Federico D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
Fil: Spotorno, Viviana G. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina
Fil: Palacios, María B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina.
Fil: Martínez Tosar, Leandro. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Micología y Botánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Micología y Botánica; Argentina.
Fil: Burrieza, Hernán P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
Fil: Tossi, Vanesa E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Micología y Botánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Micología y Botánica; Argentina.
Fuente: Plant Physiology and Biochemistry 221 : 109580 (April 2025)
Materia: Abiotic Stress
Antioxidants
Metabolism
Quinua
Estrés Abiótico
Antioxidantes
Metabolismo
Chenopodium quinoa
Quinoa
Betalains
UV-B Radiation
Betalaínas
Radiación UV-B
Chenopodium berlandieri
Nivel de accesibilidad: acceso restringido
Condiciones de uso: http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
Institución: Instituto Nacional de Tecnología Agropecuaria
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spelling	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlingsCausin, Humberto F.Cá, Federico D.Spotorno, Viviana GracielaPalacios, María B.Martínez Tosar, LeandroBurrieza, Hernán F.Tossi, Vanesa E.Abiotic StressAntioxidantsMetabolismQuinuaEstrés AbióticoAntioxidantesMetabolismoChenopodium quinoaQuinoaBetalainsUV-B RadiationBetalaínasRadiación UV-BChenopodium berlandieriChenopodium quinoa Willd. is a betalainic crop with remarkable tolerance to extreme environmental conditions. Despite numerous varieties grow at high altitudes, where UV-B radiation is intense, research on the effects of UV-B stress on this and related species is very scarce. In the present work we aimed to determine whether UV-B radiation induces the production of betalains, and evaluated the role of these pigments and other key antioxidants in preventing oxidative damage, in seedlings of C. quinoa (ecotypes CICA and Villarrica) and its close relative C. berlandieri Moq., grown in darkness and after exposure to an acute pulse of UV-B radiation (24 h, 2.5 W m−2). UV-B significantly increased MDA accumulation and induced the production of betalains (particularly betacyanins), polyphenols and UV-B-absorbing compounds in all seedlings tested. The activity of antioxidant enzymes showed comparatively minor changes, with the exception of GPOX which consistently decreased after UV-B irradiation. The degree of oxidative damage was not correlated to the concentration of betalains present in the tissues at the end of the treatment. However, when pigment synthesis was stimulated by short white light pulses prior to UV-B irradiation, the increase in MDA levels could be prevented in C. berlandieri seedlings despite no major changes occurred in most of the remaining metabolites evaluated, suggesting that betalains have an important role in controlling oxidative damage in this species. In contrast, the presence of high levels of polyphenolic compounds rather than the accumulation of betalains contributed to improved UV-B tolerance in C. quinoa seedlings.Instituto de Recursos BiológicosFil: Causin, Humberto F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina.Fil: Cá, Federico D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; ArgentinaFil: Spotorno, Viviana G. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; ArgentinaFil: Palacios, María B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina.Fil: Martínez Tosar, Leandro. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Micología y Botánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Micología y Botánica; Argentina.Fil: Burrieza, Hernán P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; ArgentinaFil: Tossi, Vanesa E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Micología y Botánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Micología y Botánica; Argentina.Elsevier2025-10-08T14:12:24Z2025-10-08T14:12:24Z2025-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/24117https://www.sciencedirect.com/science/article/abs/pii/S09819428250010810981-9428https://doi.org/10.1016/j.plaphy.2025.109580Plant Physiology and Biochemistry 221 : 109580 (April 2025)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-11-13T08:48:45Zoai:localhost:20.500.12123/24117instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-11-13 08:48:45.766INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlings
title	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlings
spellingShingle	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlings Causin, Humberto F. Abiotic Stress Antioxidants Metabolism Quinua Estrés Abiótico Antioxidantes Metabolismo Chenopodium quinoa Quinoa Betalains UV-B Radiation Betalaínas Radiación UV-B Chenopodium berlandieri
title_short	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlings
title_full	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlings
title_fullStr	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlings
title_full_unstemmed	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlings
title_sort	Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlings
dc.creator.none.fl_str_mv	Causin, Humberto F. Cá, Federico D. Spotorno, Viviana Graciela Palacios, María B. Martínez Tosar, Leandro Burrieza, Hernán F. Tossi, Vanesa E.
author	Causin, Humberto F.
author_facet	Causin, Humberto F. Cá, Federico D. Spotorno, Viviana Graciela Palacios, María B. Martínez Tosar, Leandro Burrieza, Hernán F. Tossi, Vanesa E.
author_role	author
author2	Cá, Federico D. Spotorno, Viviana Graciela Palacios, María B. Martínez Tosar, Leandro Burrieza, Hernán F. Tossi, Vanesa E.
author2_role	author author author author author author
dc.subject.none.fl_str_mv	Abiotic Stress Antioxidants Metabolism Quinua Estrés Abiótico Antioxidantes Metabolismo Chenopodium quinoa Quinoa Betalains UV-B Radiation Betalaínas Radiación UV-B Chenopodium berlandieri
topic	Abiotic Stress Antioxidants Metabolism Quinua Estrés Abiótico Antioxidantes Metabolismo Chenopodium quinoa Quinoa Betalains UV-B Radiation Betalaínas Radiación UV-B Chenopodium berlandieri
dc.description.none.fl_txt_mv	Chenopodium quinoa Willd. is a betalainic crop with remarkable tolerance to extreme environmental conditions. Despite numerous varieties grow at high altitudes, where UV-B radiation is intense, research on the effects of UV-B stress on this and related species is very scarce. In the present work we aimed to determine whether UV-B radiation induces the production of betalains, and evaluated the role of these pigments and other key antioxidants in preventing oxidative damage, in seedlings of C. quinoa (ecotypes CICA and Villarrica) and its close relative C. berlandieri Moq., grown in darkness and after exposure to an acute pulse of UV-B radiation (24 h, 2.5 W m−2). UV-B significantly increased MDA accumulation and induced the production of betalains (particularly betacyanins), polyphenols and UV-B-absorbing compounds in all seedlings tested. The activity of antioxidant enzymes showed comparatively minor changes, with the exception of GPOX which consistently decreased after UV-B irradiation. The degree of oxidative damage was not correlated to the concentration of betalains present in the tissues at the end of the treatment. However, when pigment synthesis was stimulated by short white light pulses prior to UV-B irradiation, the increase in MDA levels could be prevented in C. berlandieri seedlings despite no major changes occurred in most of the remaining metabolites evaluated, suggesting that betalains have an important role in controlling oxidative damage in this species. In contrast, the presence of high levels of polyphenolic compounds rather than the accumulation of betalains contributed to improved UV-B tolerance in C. quinoa seedlings. Instituto de Recursos Biológicos Fil: Causin, Humberto F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Fil: Cá, Federico D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina Fil: Spotorno, Viviana G. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina Fil: Palacios, María B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Fil: Martínez Tosar, Leandro. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Micología y Botánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Micología y Botánica; Argentina. Fil: Burrieza, Hernán P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina Fil: Tossi, Vanesa E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Universidad de Buenos Aires. Instituto de Micología y Botánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Micología y Botánica; Argentina.
description	Chenopodium quinoa Willd. is a betalainic crop with remarkable tolerance to extreme environmental conditions. Despite numerous varieties grow at high altitudes, where UV-B radiation is intense, research on the effects of UV-B stress on this and related species is very scarce. In the present work we aimed to determine whether UV-B radiation induces the production of betalains, and evaluated the role of these pigments and other key antioxidants in preventing oxidative damage, in seedlings of C. quinoa (ecotypes CICA and Villarrica) and its close relative C. berlandieri Moq., grown in darkness and after exposure to an acute pulse of UV-B radiation (24 h, 2.5 W m−2). UV-B significantly increased MDA accumulation and induced the production of betalains (particularly betacyanins), polyphenols and UV-B-absorbing compounds in all seedlings tested. The activity of antioxidant enzymes showed comparatively minor changes, with the exception of GPOX which consistently decreased after UV-B irradiation. The degree of oxidative damage was not correlated to the concentration of betalains present in the tissues at the end of the treatment. However, when pigment synthesis was stimulated by short white light pulses prior to UV-B irradiation, the increase in MDA levels could be prevented in C. berlandieri seedlings despite no major changes occurred in most of the remaining metabolites evaluated, suggesting that betalains have an important role in controlling oxidative damage in this species. In contrast, the presence of high levels of polyphenolic compounds rather than the accumulation of betalains contributed to improved UV-B tolerance in C. quinoa seedlings.
publishDate	2025
dc.date.none.fl_str_mv	2025-10-08T14:12:24Z 2025-10-08T14:12:24Z 2025-04-01
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dc.identifier.none.fl_str_mv	http://hdl.handle.net/20.500.12123/24117 https://www.sciencedirect.com/science/article/abs/pii/S0981942825001081 0981-9428 https://doi.org/10.1016/j.plaphy.2025.109580
url	http://hdl.handle.net/20.500.12123/24117 https://www.sciencedirect.com/science/article/abs/pii/S0981942825001081 https://doi.org/10.1016/j.plaphy.2025.109580
identifier_str_mv	0981-9428
dc.language.none.fl_str_mv	eng
language	eng
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dc.publisher.none.fl_str_mv	Elsevier
publisher.none.fl_str_mv	Elsevier
dc.source.none.fl_str_mv	Plant Physiology and Biochemistry 221 : 109580 (April 2025) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria
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Comparative role of betalains and other key antioxidant metabolites in the photoprotection against acute exposure to UV-B radiation in Chenopodium quinoa and C. berlandieri seedlin...

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