Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits
- Autores
- Dosio, Guillermo Aníbal Adrián; Tardieu, François; Turc, Olivier
- Año de publicación
- 2011
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The co-ordination between floret initiation and meristem expansion, and their relationships with carbon availability, were studied and quantified in sunflower (Helianthus annuus) plants subjected to light or water shortages. Meristem size, number of floret primordia, primordium size, rate of plant biomass accumulation, leaf area, photosynthetic rate, and soluble sugar content in the capitulum were measured until completion of floret initiation. Although treatments differentially affected tissue expansion and biomass acquisition, a common relationship between the final number of florets and the rate and duration of meristem expansion was conserved. In the absence of water deficit, changes in relative expansion rate in the meristem paralleled changes in soluble sugar content. Water deficit reduced tissue expansion both in leaves and in the capitulum, and induced the accumulation of soluble sugars in the meristem. Use of these sugars at re-watering was associated with increased meristem growth and higher floret numbers compared with control plants. Floret initiation and meristem tissue expansion remained strongly co-ordinated under all studied circumstances, and both depended on local carbon availability when water supply was unlimited. Transient water deficits favoured reproductive meristem growth and floret production. Equations accounting for these results constitute a framework for phenotyping the response to drought.
Fil: Dosio, Guillermo Aníbal Adrián. 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. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; Francia
Fil: Tardieu, François. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; Francia
Fil: Turc, Olivier. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; Francia - Materia
-
CARBON AVAILIBILITY
FLORET INITIATION
HELIANTHUS ANNUUS (SUNFLOWER)
MERISTEM
SUNFLOWER CAPITULUM
TISSUE EXPANSION RATE
WATER DEFICIT - 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:11336/245732
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficitsDosio, Guillermo Aníbal AdriánTardieu, FrançoisTurc, OlivierCARBON AVAILIBILITYFLORET INITIATIONHELIANTHUS ANNUUS (SUNFLOWER)MERISTEMSUNFLOWER CAPITULUMTISSUE EXPANSION RATEWATER DEFICIThttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4The co-ordination between floret initiation and meristem expansion, and their relationships with carbon availability, were studied and quantified in sunflower (Helianthus annuus) plants subjected to light or water shortages. Meristem size, number of floret primordia, primordium size, rate of plant biomass accumulation, leaf area, photosynthetic rate, and soluble sugar content in the capitulum were measured until completion of floret initiation. Although treatments differentially affected tissue expansion and biomass acquisition, a common relationship between the final number of florets and the rate and duration of meristem expansion was conserved. In the absence of water deficit, changes in relative expansion rate in the meristem paralleled changes in soluble sugar content. Water deficit reduced tissue expansion both in leaves and in the capitulum, and induced the accumulation of soluble sugars in the meristem. Use of these sugars at re-watering was associated with increased meristem growth and higher floret numbers compared with control plants. Floret initiation and meristem tissue expansion remained strongly co-ordinated under all studied circumstances, and both depended on local carbon availability when water supply was unlimited. Transient water deficits favoured reproductive meristem growth and floret production. Equations accounting for these results constitute a framework for phenotyping the response to drought.Fil: Dosio, Guillermo Aníbal Adrián. 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. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; FranciaFil: Tardieu, François. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; FranciaFil: Turc, Olivier. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; FranciaWiley Blackwell Publishing, Inc2011-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/245732Dosio, Guillermo Aníbal Adrián; Tardieu, François; Turc, Olivier; Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits; Wiley Blackwell Publishing, Inc; New Phytologist; 189; 1; 1-2011; 94-1050028-646XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://nph.onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03445.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1469-8137.2010.03445.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 Técnicas2025-09-29T09:36:51Zoai:ri.conicet.gov.ar:11336/245732instacron: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 09:36:51.789CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits |
title |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits |
spellingShingle |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits Dosio, Guillermo Aníbal Adrián CARBON AVAILIBILITY FLORET INITIATION HELIANTHUS ANNUUS (SUNFLOWER) MERISTEM SUNFLOWER CAPITULUM TISSUE EXPANSION RATE WATER DEFICIT |
title_short |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits |
title_full |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits |
title_fullStr |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits |
title_full_unstemmed |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits |
title_sort |
Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits |
dc.creator.none.fl_str_mv |
Dosio, Guillermo Aníbal Adrián Tardieu, François Turc, Olivier |
author |
Dosio, Guillermo Aníbal Adrián |
author_facet |
Dosio, Guillermo Aníbal Adrián Tardieu, François Turc, Olivier |
author_role |
author |
author2 |
Tardieu, François Turc, Olivier |
author2_role |
author author |
dc.subject.none.fl_str_mv |
CARBON AVAILIBILITY FLORET INITIATION HELIANTHUS ANNUUS (SUNFLOWER) MERISTEM SUNFLOWER CAPITULUM TISSUE EXPANSION RATE WATER DEFICIT |
topic |
CARBON AVAILIBILITY FLORET INITIATION HELIANTHUS ANNUUS (SUNFLOWER) MERISTEM SUNFLOWER CAPITULUM TISSUE EXPANSION RATE WATER DEFICIT |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/4.1 https://purl.org/becyt/ford/4 |
dc.description.none.fl_txt_mv |
The co-ordination between floret initiation and meristem expansion, and their relationships with carbon availability, were studied and quantified in sunflower (Helianthus annuus) plants subjected to light or water shortages. Meristem size, number of floret primordia, primordium size, rate of plant biomass accumulation, leaf area, photosynthetic rate, and soluble sugar content in the capitulum were measured until completion of floret initiation. Although treatments differentially affected tissue expansion and biomass acquisition, a common relationship between the final number of florets and the rate and duration of meristem expansion was conserved. In the absence of water deficit, changes in relative expansion rate in the meristem paralleled changes in soluble sugar content. Water deficit reduced tissue expansion both in leaves and in the capitulum, and induced the accumulation of soluble sugars in the meristem. Use of these sugars at re-watering was associated with increased meristem growth and higher floret numbers compared with control plants. Floret initiation and meristem tissue expansion remained strongly co-ordinated under all studied circumstances, and both depended on local carbon availability when water supply was unlimited. Transient water deficits favoured reproductive meristem growth and floret production. Equations accounting for these results constitute a framework for phenotyping the response to drought. Fil: Dosio, Guillermo Aníbal Adrián. 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. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; Francia Fil: Tardieu, François. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; Francia Fil: Turc, Olivier. Institut National de la Recherche Agronomique; Francia. Montpellier SupAgro; Francia |
description |
The co-ordination between floret initiation and meristem expansion, and their relationships with carbon availability, were studied and quantified in sunflower (Helianthus annuus) plants subjected to light or water shortages. Meristem size, number of floret primordia, primordium size, rate of plant biomass accumulation, leaf area, photosynthetic rate, and soluble sugar content in the capitulum were measured until completion of floret initiation. Although treatments differentially affected tissue expansion and biomass acquisition, a common relationship between the final number of florets and the rate and duration of meristem expansion was conserved. In the absence of water deficit, changes in relative expansion rate in the meristem paralleled changes in soluble sugar content. Water deficit reduced tissue expansion both in leaves and in the capitulum, and induced the accumulation of soluble sugars in the meristem. Use of these sugars at re-watering was associated with increased meristem growth and higher floret numbers compared with control plants. Floret initiation and meristem tissue expansion remained strongly co-ordinated under all studied circumstances, and both depended on local carbon availability when water supply was unlimited. Transient water deficits favoured reproductive meristem growth and floret production. Equations accounting for these results constitute a framework for phenotyping the response to drought. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-01 |
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/11336/245732 Dosio, Guillermo Aníbal Adrián; Tardieu, François; Turc, Olivier; Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits; Wiley Blackwell Publishing, Inc; New Phytologist; 189; 1; 1-2011; 94-105 0028-646X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/245732 |
identifier_str_mv |
Dosio, Guillermo Aníbal Adrián; Tardieu, François; Turc, Olivier; Floret initiation, tissue expansion and carbon availability at the meristem of the sunflower capitulum as affected by water or light deficits; Wiley Blackwell Publishing, Inc; New Phytologist; 189; 1; 1-2011; 94-105 0028-646X 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://nph.onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03445.x info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1469-8137.2010.03445.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 |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
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 |
_version_ |
1844613158260441088 |
score |
13.070432 |