Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals

Autores
Bartoli, Carlos Guillermo; Simontacchi, Marcela; Montaldi, Edgardo Raúl; Puntarulo, Susana
Año de publicación
1996
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The objective of this work was to study the role of free radicals in relation to ethylene production during ageing of cut carnation petals. Ethylene production by freshly cut flowers was negligible, but 8 d after cutting ethylene production began to increase and reached a peak by day 9, before beginning to decline again. The efflux of electrolytes (membrane damage index) increased 101% and 2, 7-dichlorofluorescein oxidation rate (oxidative stress index) increased 53% from day 8 to day 11 after detachment. Ethylene peak was either (a) not affected significantly by the supplementation of exogenous ethylene on the day of cutting, or (b) expanded between days 7-9 after ethylene supplementation on day 6 of cutting, or (c) was inhibited by amino-oxyacetic acid and paraquat treatments. After ethylene supplementation, conductivity and 2,7-dichlorofluorescein oxidation increased significantly as compared to control petals, and the activity of antioxidant enzymes was not affected. However, both w-tocopherol and glutathione content decreased significantly after ethylene supplementation on day 6 after detachment. Amino-oxyacetic acid treatment prevented the increases in conductivity and 2,7dichlorofluorescein oxidation, did not alter the activities of antioxidant enzymes and significantly increased the content of a-tocopherol and glutathione as compared to control carnation petals. Paraquat treatment paralleled qualitatively ethylene supplementation after 6 d of cutting. Taken as a whole, the data presented here may be understood as experimental evidence of a close association between ethylene production and oxidative stress in ageing of cut carnations.
Instituto de Fisiología Vegetal
Materia
Botánica
Química
Carnation petals
oxidative stress
ethylene
antioxidants
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/139130

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/139130
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petalsBartoli, Carlos GuillermoSimontacchi, MarcelaMontaldi, Edgardo RaúlPuntarulo, SusanaBotánicaQuímicaCarnation petalsoxidative stressethyleneantioxidantsThe objective of this work was to study the role of free radicals in relation to ethylene production during ageing of cut carnation petals. Ethylene production by freshly cut flowers was negligible, but 8 d after cutting ethylene production began to increase and reached a peak by day 9, before beginning to decline again. The efflux of electrolytes (membrane damage index) increased 101% and 2, 7-dichlorofluorescein oxidation rate (oxidative stress index) increased 53% from day 8 to day 11 after detachment. Ethylene peak was either (a) not affected significantly by the supplementation of exogenous ethylene on the day of cutting, or (b) expanded between days 7-9 after ethylene supplementation on day 6 of cutting, or (c) was inhibited by amino-oxyacetic acid and paraquat treatments. After ethylene supplementation, conductivity and 2,7-dichlorofluorescein oxidation increased significantly as compared to control petals, and the activity of antioxidant enzymes was not affected. However, both w-tocopherol and glutathione content decreased significantly after ethylene supplementation on day 6 after detachment. Amino-oxyacetic acid treatment prevented the increases in conductivity and 2,7dichlorofluorescein oxidation, did not alter the activities of antioxidant enzymes and significantly increased the content of a-tocopherol and glutathione as compared to control carnation petals. Paraquat treatment paralleled qualitatively ethylene supplementation after 6 d of cutting. Taken as a whole, the data presented here may be understood as experimental evidence of a close association between ethylene production and oxidative stress in ageing of cut carnations.Instituto de Fisiología Vegetal1996-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf595-601http://sedici.unlp.edu.ar/handle/10915/139130enginfo:eu-repo/semantics/altIdentifier/issn/0022-0957info:eu-repo/semantics/altIdentifier/issn/1460-2431info:eu-repo/semantics/altIdentifier/doi/10.1093/jxb/47.4.595info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:57Zoai:sedici.unlp.edu.ar:10915/139130Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:57.276SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals
title Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals
spellingShingle Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals
Bartoli, Carlos Guillermo
Botánica
Química
Carnation petals
oxidative stress
ethylene
antioxidants
title_short Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals
title_full Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals
title_fullStr Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals
title_full_unstemmed Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals
title_sort Oxidative stress, antioxidant capacity and ethylene production during ageing of cut carnation (Dianthus caryophyllus) petals
dc.creator.none.fl_str_mv Bartoli, Carlos Guillermo
Simontacchi, Marcela
Montaldi, Edgardo Raúl
Puntarulo, Susana
author Bartoli, Carlos Guillermo
author_facet Bartoli, Carlos Guillermo
Simontacchi, Marcela
Montaldi, Edgardo Raúl
Puntarulo, Susana
author_role author
author2 Simontacchi, Marcela
Montaldi, Edgardo Raúl
Puntarulo, Susana
author2_role author
author
author
dc.subject.none.fl_str_mv Botánica
Química
Carnation petals
oxidative stress
ethylene
antioxidants
topic Botánica
Química
Carnation petals
oxidative stress
ethylene
antioxidants
dc.description.none.fl_txt_mv The objective of this work was to study the role of free radicals in relation to ethylene production during ageing of cut carnation petals. Ethylene production by freshly cut flowers was negligible, but 8 d after cutting ethylene production began to increase and reached a peak by day 9, before beginning to decline again. The efflux of electrolytes (membrane damage index) increased 101% and 2, 7-dichlorofluorescein oxidation rate (oxidative stress index) increased 53% from day 8 to day 11 after detachment. Ethylene peak was either (a) not affected significantly by the supplementation of exogenous ethylene on the day of cutting, or (b) expanded between days 7-9 after ethylene supplementation on day 6 of cutting, or (c) was inhibited by amino-oxyacetic acid and paraquat treatments. After ethylene supplementation, conductivity and 2,7-dichlorofluorescein oxidation increased significantly as compared to control petals, and the activity of antioxidant enzymes was not affected. However, both w-tocopherol and glutathione content decreased significantly after ethylene supplementation on day 6 after detachment. Amino-oxyacetic acid treatment prevented the increases in conductivity and 2,7dichlorofluorescein oxidation, did not alter the activities of antioxidant enzymes and significantly increased the content of a-tocopherol and glutathione as compared to control carnation petals. Paraquat treatment paralleled qualitatively ethylene supplementation after 6 d of cutting. Taken as a whole, the data presented here may be understood as experimental evidence of a close association between ethylene production and oxidative stress in ageing of cut carnations.
Instituto de Fisiología Vegetal
description The objective of this work was to study the role of free radicals in relation to ethylene production during ageing of cut carnation petals. Ethylene production by freshly cut flowers was negligible, but 8 d after cutting ethylene production began to increase and reached a peak by day 9, before beginning to decline again. The efflux of electrolytes (membrane damage index) increased 101% and 2, 7-dichlorofluorescein oxidation rate (oxidative stress index) increased 53% from day 8 to day 11 after detachment. Ethylene peak was either (a) not affected significantly by the supplementation of exogenous ethylene on the day of cutting, or (b) expanded between days 7-9 after ethylene supplementation on day 6 of cutting, or (c) was inhibited by amino-oxyacetic acid and paraquat treatments. After ethylene supplementation, conductivity and 2,7-dichlorofluorescein oxidation increased significantly as compared to control petals, and the activity of antioxidant enzymes was not affected. However, both w-tocopherol and glutathione content decreased significantly after ethylene supplementation on day 6 after detachment. Amino-oxyacetic acid treatment prevented the increases in conductivity and 2,7dichlorofluorescein oxidation, did not alter the activities of antioxidant enzymes and significantly increased the content of a-tocopherol and glutathione as compared to control carnation petals. Paraquat treatment paralleled qualitatively ethylene supplementation after 6 d of cutting. Taken as a whole, the data presented here may be understood as experimental evidence of a close association between ethylene production and oxidative stress in ageing of cut carnations.
publishDate 1996
dc.date.none.fl_str_mv 1996-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/139130
url http://sedici.unlp.edu.ar/handle/10915/139130
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0022-0957
info:eu-repo/semantics/altIdentifier/issn/1460-2431
info:eu-repo/semantics/altIdentifier/doi/10.1093/jxb/47.4.595
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
595-601
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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