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
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...
| Autores principales: | , , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2025
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| Materias: | |
| Acceso en línea: | 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 |
| _version_ | 1855038881657782272 |
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| author | Causin, Humberto F. Cá, Federico D. Spotorno, Viviana Graciela Palacios, María B. Martínez Tosar, Leandro Burrieza, Hernán F. Tossi, Vanesa E. |
| author_browse | Burrieza, Hernán F. Causin, Humberto F. Cá, Federico D. Martínez Tosar, Leandro Palacios, María B. Spotorno, Viviana Graciela Tossi, Vanesa E. |
| author_facet | Causin, Humberto F. Cá, Federico D. Spotorno, Viviana Graciela Palacios, María B. Martínez Tosar, Leandro Burrieza, Hernán F. Tossi, Vanesa E. |
| author_sort | Causin, Humberto F. |
| collection | INTA Digital |
| 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. |
| format | info:ar-repo/semantics/artículo |
| id | INTA24117 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA241172025-10-08T14:26:29Z 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. Cá, Federico D. Spotorno, Viviana Graciela Palacios, María B. Martínez Tosar, Leandro Burrieza, Hernán F. Tossi, Vanesa E. Abiotic Stress Antioxidants Metabolism Quinua Estrés Abiótico Antioxidantes Metabolismo Chenopodium quinoa Quinoa Betalains UV-B Radiation Betalaínas Radiación UV-B Chenopodium berlandieri 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. 2025-10-08T14:12:24Z 2025-10-08T14:12:24Z 2025-04-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 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 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Plant Physiology and Biochemistry 221 : 109580 (April 2025) |
| spellingShingle | Abiotic Stress Antioxidants Metabolism Quinua Estrés Abiótico Antioxidantes Metabolismo Chenopodium quinoa Quinoa Betalains UV-B Radiation Betalaínas Radiación UV-B Chenopodium berlandieri Causin, Humberto F. Cá, Federico D. Spotorno, Viviana Graciela Palacios, María B. Martínez Tosar, Leandro Burrieza, Hernán F. Tossi, Vanesa E. 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 |
| 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_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_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 |
| topic | Abiotic Stress Antioxidants Metabolism Quinua Estrés Abiótico Antioxidantes Metabolismo Chenopodium quinoa Quinoa Betalains UV-B Radiation Betalaínas Radiación UV-B Chenopodium berlandieri |
| 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 |
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