Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation
- Autores
- Hilal, Mirna Beatriz; Parrado, María Francisca; Rosa, Mariana Daniela; Gallardo, Miriam Rosa Angela; Massa, Edy Marta; Orce, Luis; González, Juan Antonio; Prado, Fernando Eduardo
- Año de publicación
- 2007
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- UV-B radiation (280–320 nm) is harmful to living organisms and has detrimental effects on plant growth, development and physiology. In this work we examined some mechanisms involved in plant responses to UV-B radiation. Seedlings of quinoa (Chenopodium quinoa Willd.) were exposed to variable numbers of UV-B radiation doses, and the effect on cotyledons was studied. We analyzed (1) cotyledons anatomy and chloroplasts ultrastructure; (2) peroxidase activity involved in the lignification processes; and (3) content of photosynthetic pigments, phenolic compounds and carbohydrates. Exposure to two UV-B doses induced an increase in the wall thickness of epidermal cells, which was associated with lignin deposition and higher activity of the peroxidase. The chloroplast ultrastructure showed an appearance typical of plants under shade conditions, likely in response to reduced light penetration into the mesophyll cells due to the screening effect of epidermal lignin deposition. Exposure to UV-B radiation also led to (1) enhancement in the level of phenolics, which may serve a protective function; (2) strong increase in the fructose content, a fact that might be related to higher requirement of erythrose-4P as a substrate for the synthesis of lignin and phenolics; and (3) reduction in the chlorophyll concentration, evidencing alteration in the photosynthetic system. We propose that the observed lignin deposition in epidermal tissues of quinoa is a resistance mechanism against UV-B radiation, which allows growing of this species in Andean highlands.
Fil: Hilal, Mirna Beatriz. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto Miguel Lillo; Argentina
Fil: Parrado, María Francisca. Fundación Miguel Lillo; Argentina
Fil: Rosa, Mariana Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Gallardo, Miriam Rosa Angela. Fundación Miguel Lillo; Argentina
Fil: Massa, Edy Marta. Universidad Nacional de Tucumán; Argentina
Fil: Orce, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
Fil: González, Juan Antonio. Fundación Miguel Lillo; Argentina
Fil: Prado, Fernando Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina - Materia
-
QUINOA
UV-B
LIGNIN
CHLOROPLAST - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/100221
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Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B RadiationHilal, Mirna BeatrizParrado, María FranciscaRosa, Mariana DanielaGallardo, Miriam Rosa AngelaMassa, Edy MartaOrce, LuisGonzález, Juan AntonioPrado, Fernando EduardoQUINOAUV-BLIGNINCHLOROPLASThttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1UV-B radiation (280–320 nm) is harmful to living organisms and has detrimental effects on plant growth, development and physiology. In this work we examined some mechanisms involved in plant responses to UV-B radiation. Seedlings of quinoa (Chenopodium quinoa Willd.) were exposed to variable numbers of UV-B radiation doses, and the effect on cotyledons was studied. We analyzed (1) cotyledons anatomy and chloroplasts ultrastructure; (2) peroxidase activity involved in the lignification processes; and (3) content of photosynthetic pigments, phenolic compounds and carbohydrates. Exposure to two UV-B doses induced an increase in the wall thickness of epidermal cells, which was associated with lignin deposition and higher activity of the peroxidase. The chloroplast ultrastructure showed an appearance typical of plants under shade conditions, likely in response to reduced light penetration into the mesophyll cells due to the screening effect of epidermal lignin deposition. Exposure to UV-B radiation also led to (1) enhancement in the level of phenolics, which may serve a protective function; (2) strong increase in the fructose content, a fact that might be related to higher requirement of erythrose-4P as a substrate for the synthesis of lignin and phenolics; and (3) reduction in the chlorophyll concentration, evidencing alteration in the photosynthetic system. We propose that the observed lignin deposition in epidermal tissues of quinoa is a resistance mechanism against UV-B radiation, which allows growing of this species in Andean highlands.Fil: Hilal, Mirna Beatriz. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto Miguel Lillo; ArgentinaFil: Parrado, María Francisca. Fundación Miguel Lillo; ArgentinaFil: Rosa, Mariana Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Gallardo, Miriam Rosa Angela. Fundación Miguel Lillo; ArgentinaFil: Massa, Edy Marta. Universidad Nacional de Tucumán; ArgentinaFil: Orce, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaFil: González, Juan Antonio. Fundación Miguel Lillo; ArgentinaFil: Prado, Fernando Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaWiley Blackwell Publishing, Inc2007-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100221Hilal, Mirna Beatriz; Parrado, María Francisca; Rosa, Mariana Daniela; Gallardo, Miriam Rosa Angela; Massa, Edy Marta; et al.; Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation; Wiley Blackwell Publishing, Inc; Photochemistry and Photobiology; 79; 2; 5-2007; 205-2100031-8655CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1751-1097.2004.tb00011.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1751-1097.2004.tb00011.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:15Zoai:ri.conicet.gov.ar:11336/100221instacron: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 09:46:15.883CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation |
title |
Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation |
spellingShingle |
Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation Hilal, Mirna Beatriz QUINOA UV-B LIGNIN CHLOROPLAST |
title_short |
Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation |
title_full |
Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation |
title_fullStr |
Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation |
title_full_unstemmed |
Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation |
title_sort |
Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation |
dc.creator.none.fl_str_mv |
Hilal, Mirna Beatriz Parrado, María Francisca Rosa, Mariana Daniela Gallardo, Miriam Rosa Angela Massa, Edy Marta Orce, Luis González, Juan Antonio Prado, Fernando Eduardo |
author |
Hilal, Mirna Beatriz |
author_facet |
Hilal, Mirna Beatriz Parrado, María Francisca Rosa, Mariana Daniela Gallardo, Miriam Rosa Angela Massa, Edy Marta Orce, Luis González, Juan Antonio Prado, Fernando Eduardo |
author_role |
author |
author2 |
Parrado, María Francisca Rosa, Mariana Daniela Gallardo, Miriam Rosa Angela Massa, Edy Marta Orce, Luis González, Juan Antonio Prado, Fernando Eduardo |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
QUINOA UV-B LIGNIN CHLOROPLAST |
topic |
QUINOA UV-B LIGNIN CHLOROPLAST |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
UV-B radiation (280–320 nm) is harmful to living organisms and has detrimental effects on plant growth, development and physiology. In this work we examined some mechanisms involved in plant responses to UV-B radiation. Seedlings of quinoa (Chenopodium quinoa Willd.) were exposed to variable numbers of UV-B radiation doses, and the effect on cotyledons was studied. We analyzed (1) cotyledons anatomy and chloroplasts ultrastructure; (2) peroxidase activity involved in the lignification processes; and (3) content of photosynthetic pigments, phenolic compounds and carbohydrates. Exposure to two UV-B doses induced an increase in the wall thickness of epidermal cells, which was associated with lignin deposition and higher activity of the peroxidase. The chloroplast ultrastructure showed an appearance typical of plants under shade conditions, likely in response to reduced light penetration into the mesophyll cells due to the screening effect of epidermal lignin deposition. Exposure to UV-B radiation also led to (1) enhancement in the level of phenolics, which may serve a protective function; (2) strong increase in the fructose content, a fact that might be related to higher requirement of erythrose-4P as a substrate for the synthesis of lignin and phenolics; and (3) reduction in the chlorophyll concentration, evidencing alteration in the photosynthetic system. We propose that the observed lignin deposition in epidermal tissues of quinoa is a resistance mechanism against UV-B radiation, which allows growing of this species in Andean highlands. Fil: Hilal, Mirna Beatriz. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto Miguel Lillo; Argentina Fil: Parrado, María Francisca. Fundación Miguel Lillo; Argentina Fil: Rosa, Mariana Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina Fil: Gallardo, Miriam Rosa Angela. Fundación Miguel Lillo; Argentina Fil: Massa, Edy Marta. Universidad Nacional de Tucumán; Argentina Fil: Orce, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina Fil: González, Juan Antonio. Fundación Miguel Lillo; Argentina Fil: Prado, Fernando Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina |
description |
UV-B radiation (280–320 nm) is harmful to living organisms and has detrimental effects on plant growth, development and physiology. In this work we examined some mechanisms involved in plant responses to UV-B radiation. Seedlings of quinoa (Chenopodium quinoa Willd.) were exposed to variable numbers of UV-B radiation doses, and the effect on cotyledons was studied. We analyzed (1) cotyledons anatomy and chloroplasts ultrastructure; (2) peroxidase activity involved in the lignification processes; and (3) content of photosynthetic pigments, phenolic compounds and carbohydrates. Exposure to two UV-B doses induced an increase in the wall thickness of epidermal cells, which was associated with lignin deposition and higher activity of the peroxidase. The chloroplast ultrastructure showed an appearance typical of plants under shade conditions, likely in response to reduced light penetration into the mesophyll cells due to the screening effect of epidermal lignin deposition. Exposure to UV-B radiation also led to (1) enhancement in the level of phenolics, which may serve a protective function; (2) strong increase in the fructose content, a fact that might be related to higher requirement of erythrose-4P as a substrate for the synthesis of lignin and phenolics; and (3) reduction in the chlorophyll concentration, evidencing alteration in the photosynthetic system. We propose that the observed lignin deposition in epidermal tissues of quinoa is a resistance mechanism against UV-B radiation, which allows growing of this species in Andean highlands. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-05 |
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/11336/100221 Hilal, Mirna Beatriz; Parrado, María Francisca; Rosa, Mariana Daniela; Gallardo, Miriam Rosa Angela; Massa, Edy Marta; et al.; Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation; Wiley Blackwell Publishing, Inc; Photochemistry and Photobiology; 79; 2; 5-2007; 205-210 0031-8655 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/100221 |
identifier_str_mv |
Hilal, Mirna Beatriz; Parrado, María Francisca; Rosa, Mariana Daniela; Gallardo, Miriam Rosa Angela; Massa, Edy Marta; et al.; Epidermal Lignin Deposition in Quinoa Cotyledons in Response to UV-B Radiation; Wiley Blackwell Publishing, Inc; Photochemistry and Photobiology; 79; 2; 5-2007; 205-210 0031-8655 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://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1751-1097.2004.tb00011.x info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1751-1097.2004.tb00011.x |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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13.070432 |