Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains
- Autores
- Echarte, Maria Mercedes; Alberdi, Ignacio; Aguirrezábal, Luis Adolfo Nazareno
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Fatty acid composition of Helianthus annuus L. (sunflower) oil depends on intercepted solar radiation per plant (ISR) during grain filling. This effect could be accounted by the assimilate availability for the grains (the source-sink ratio). However, the current physiological-biochemical knowledge does not consider any effect of carbon availability on oil fatty acid composition. The objective of this work was to address the regulation of fatty acid composition by assimilate supply to sunflower grains. A wide range of source-sink ratios was obtained by manipulating either the source or the sink during grain filling. Assimilate supply was also modified by injecting sucrose to the receptacle of sunflower capitula. Grain weight and oil content depended on both ISR and source-sink ratio in a curvilinear manner. When sink size was decreased by grain excision, ISR failed to explain oil fatty acid composition while source-sink ratio appropriately described it. Sucrose injection significantly increased grain weight, oil content and oleic acid percentage of shaded plants. It is concluded that effects of ISR on fatty acid composition are a consequence of changes in assimilate availability for grain oil synthesis. To explain these results a conceptual model is proposed: when assimilate supply limits grain growth and oil synthesis, mainly linoleic acid is synthesized. As the assimilate supply increases, oleic acid desaturation process gets saturated and oleic acid accumulates.
Fil: Echarte, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Alberdi, Ignacio. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
Fil: Aguirrezábal, Luis Adolfo Nazareno. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina - Materia
-
CROP PHYSIOLOGY AND METABOLISM
SUNFLOWER
PLANT AND ENVIRONMENT INTERACTION
SEED QUALITY
FATTY ACID COMPOSITION - 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:11336/197110
Ver los metadatos del registro completo
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Post flowering assimilate availability regulates oil fatty acid composition in sunflower grainsEcharte, Maria MercedesAlberdi, IgnacioAguirrezábal, Luis Adolfo NazarenoCROP PHYSIOLOGY AND METABOLISMSUNFLOWERPLANT AND ENVIRONMENT INTERACTIONSEED QUALITYFATTY ACID COMPOSITIONhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Fatty acid composition of Helianthus annuus L. (sunflower) oil depends on intercepted solar radiation per plant (ISR) during grain filling. This effect could be accounted by the assimilate availability for the grains (the source-sink ratio). However, the current physiological-biochemical knowledge does not consider any effect of carbon availability on oil fatty acid composition. The objective of this work was to address the regulation of fatty acid composition by assimilate supply to sunflower grains. A wide range of source-sink ratios was obtained by manipulating either the source or the sink during grain filling. Assimilate supply was also modified by injecting sucrose to the receptacle of sunflower capitula. Grain weight and oil content depended on both ISR and source-sink ratio in a curvilinear manner. When sink size was decreased by grain excision, ISR failed to explain oil fatty acid composition while source-sink ratio appropriately described it. Sucrose injection significantly increased grain weight, oil content and oleic acid percentage of shaded plants. It is concluded that effects of ISR on fatty acid composition are a consequence of changes in assimilate availability for grain oil synthesis. To explain these results a conceptual model is proposed: when assimilate supply limits grain growth and oil synthesis, mainly linoleic acid is synthesized. As the assimilate supply increases, oleic acid desaturation process gets saturated and oleic acid accumulates.Fil: Echarte, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Alberdi, Ignacio. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; ArgentinaFil: Aguirrezábal, Luis Adolfo Nazareno. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; ArgentinaCrop Science Society of America2012-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/197110Echarte, Maria Mercedes; Alberdi, Ignacio; Aguirrezábal, Luis Adolfo Nazareno; Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains; Crop Science Society of America; Crop Science; 52; 2; 9-2012; 818-8290011-183XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://acsess.onlinelibrary.wiley.com/doi/full/10.2135/cropsci2011.09.0477info:eu-repo/semantics/altIdentifier/doi/10.2135/cropsci2011.09.0477info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:03:42Zoai:ri.conicet.gov.ar:11336/197110instacron: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 10:03:42.572CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains |
title |
Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains |
spellingShingle |
Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains Echarte, Maria Mercedes CROP PHYSIOLOGY AND METABOLISM SUNFLOWER PLANT AND ENVIRONMENT INTERACTION SEED QUALITY FATTY ACID COMPOSITION |
title_short |
Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains |
title_full |
Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains |
title_fullStr |
Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains |
title_full_unstemmed |
Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains |
title_sort |
Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains |
dc.creator.none.fl_str_mv |
Echarte, Maria Mercedes Alberdi, Ignacio Aguirrezábal, Luis Adolfo Nazareno |
author |
Echarte, Maria Mercedes |
author_facet |
Echarte, Maria Mercedes Alberdi, Ignacio Aguirrezábal, Luis Adolfo Nazareno |
author_role |
author |
author2 |
Alberdi, Ignacio Aguirrezábal, Luis Adolfo Nazareno |
author2_role |
author author |
dc.subject.none.fl_str_mv |
CROP PHYSIOLOGY AND METABOLISM SUNFLOWER PLANT AND ENVIRONMENT INTERACTION SEED QUALITY FATTY ACID COMPOSITION |
topic |
CROP PHYSIOLOGY AND METABOLISM SUNFLOWER PLANT AND ENVIRONMENT INTERACTION SEED QUALITY FATTY ACID COMPOSITION |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/4.1 https://purl.org/becyt/ford/4 |
dc.description.none.fl_txt_mv |
Fatty acid composition of Helianthus annuus L. (sunflower) oil depends on intercepted solar radiation per plant (ISR) during grain filling. This effect could be accounted by the assimilate availability for the grains (the source-sink ratio). However, the current physiological-biochemical knowledge does not consider any effect of carbon availability on oil fatty acid composition. The objective of this work was to address the regulation of fatty acid composition by assimilate supply to sunflower grains. A wide range of source-sink ratios was obtained by manipulating either the source or the sink during grain filling. Assimilate supply was also modified by injecting sucrose to the receptacle of sunflower capitula. Grain weight and oil content depended on both ISR and source-sink ratio in a curvilinear manner. When sink size was decreased by grain excision, ISR failed to explain oil fatty acid composition while source-sink ratio appropriately described it. Sucrose injection significantly increased grain weight, oil content and oleic acid percentage of shaded plants. It is concluded that effects of ISR on fatty acid composition are a consequence of changes in assimilate availability for grain oil synthesis. To explain these results a conceptual model is proposed: when assimilate supply limits grain growth and oil synthesis, mainly linoleic acid is synthesized. As the assimilate supply increases, oleic acid desaturation process gets saturated and oleic acid accumulates. Fil: Echarte, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Alberdi, Ignacio. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina Fil: Aguirrezábal, Luis Adolfo Nazareno. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina |
description |
Fatty acid composition of Helianthus annuus L. (sunflower) oil depends on intercepted solar radiation per plant (ISR) during grain filling. This effect could be accounted by the assimilate availability for the grains (the source-sink ratio). However, the current physiological-biochemical knowledge does not consider any effect of carbon availability on oil fatty acid composition. The objective of this work was to address the regulation of fatty acid composition by assimilate supply to sunflower grains. A wide range of source-sink ratios was obtained by manipulating either the source or the sink during grain filling. Assimilate supply was also modified by injecting sucrose to the receptacle of sunflower capitula. Grain weight and oil content depended on both ISR and source-sink ratio in a curvilinear manner. When sink size was decreased by grain excision, ISR failed to explain oil fatty acid composition while source-sink ratio appropriately described it. Sucrose injection significantly increased grain weight, oil content and oleic acid percentage of shaded plants. It is concluded that effects of ISR on fatty acid composition are a consequence of changes in assimilate availability for grain oil synthesis. To explain these results a conceptual model is proposed: when assimilate supply limits grain growth and oil synthesis, mainly linoleic acid is synthesized. As the assimilate supply increases, oleic acid desaturation process gets saturated and oleic acid accumulates. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09 |
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/11336/197110 Echarte, Maria Mercedes; Alberdi, Ignacio; Aguirrezábal, Luis Adolfo Nazareno; Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains; Crop Science Society of America; Crop Science; 52; 2; 9-2012; 818-829 0011-183X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/197110 |
identifier_str_mv |
Echarte, Maria Mercedes; Alberdi, Ignacio; Aguirrezábal, Luis Adolfo Nazareno; Post flowering assimilate availability regulates oil fatty acid composition in sunflower grains; Crop Science Society of America; Crop Science; 52; 2; 9-2012; 818-829 0011-183X 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://acsess.onlinelibrary.wiley.com/doi/full/10.2135/cropsci2011.09.0477 info:eu-repo/semantics/altIdentifier/doi/10.2135/cropsci2011.09.0477 |
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 |
dc.publisher.none.fl_str_mv |
Crop Science Society of America |
publisher.none.fl_str_mv |
Crop Science Society of America |
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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1844613856674971648 |
score |
13.070432 |