The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.actahort.org/books/864/864_31.htm http://hdl.handle.net/11449/71736 |
Resumo: | This study's objective is to evaluate the photosynthates partitioning and source-sink relationships, in vegetative and reproductive twigs of sweet passion fruit, using the carbon-13, stable isotope of carbon. The leaves of vegetative and reproductive twigs were placed in a sealed chamber and 13CO 2 were injected for 30 minutes. After six hours, the different organs of the twig were collected and immersed in liquid nitrogen (-196°C). All plant samples were oven-dried, powdered and combusted in an elemental analyzer. The results showed that the methodology was efficient to evaluate the partitioning of photosynthates. In the vegetative twigs, the new open leaves, the closed leaves and growth meristem were the principal sink for the source leaves enriched with 13CO 2. In the reproductive twigs with only flowers buds, the source-sink relationship was changed and the flowers buds turn to be the principal sink and the growing leaves were secondary sinks. The presence of young fruits changed again the source-sink relationship of the twig, and they were the principal sinks. The apical leaves, with 60% of final leaf area were also a sink for photosynthates. |
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The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruitPhotosynthesisPhysiologySource-sink relationsStable isotopesPassiflora edulisThis study's objective is to evaluate the photosynthates partitioning and source-sink relationships, in vegetative and reproductive twigs of sweet passion fruit, using the carbon-13, stable isotope of carbon. The leaves of vegetative and reproductive twigs were placed in a sealed chamber and 13CO 2 were injected for 30 minutes. After six hours, the different organs of the twig were collected and immersed in liquid nitrogen (-196°C). All plant samples were oven-dried, powdered and combusted in an elemental analyzer. The results showed that the methodology was efficient to evaluate the partitioning of photosynthates. In the vegetative twigs, the new open leaves, the closed leaves and growth meristem were the principal sink for the source leaves enriched with 13CO 2. In the reproductive twigs with only flowers buds, the source-sink relationship was changed and the flowers buds turn to be the principal sink and the growing leaves were secondary sinks. The presence of young fruits changed again the source-sink relationship of the twig, and they were the principal sinks. The apical leaves, with 60% of final leaf area were also a sink for photosynthates.UFRRJ IA Depto. Fitotecnia, SeropedicaUNESP IB Depto. Botânica, BotucatuCCTA UENF, CamposUNESP IB Depto. Botânica, BotucatuDepto. FitotecniaUniversidade Estadual Paulista (Unesp)Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF)Vasconcellos, M. A SLeitão, G. R.Ducatti, C. [UNESP]Carvalho, A. J C2014-05-27T11:24:42Z2014-05-27T11:24:42Z2010-06-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject231-238http://www.actahort.org/books/864/864_31.htmActa Horticulturae, v. 864, p. 231-238.0567-7572http://hdl.handle.net/11449/717362-s2.0-779573065791030251743943217Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Horticulturae0,198info:eu-repo/semantics/openAccess2021-10-23T21:41:43Zoai:repositorio.unesp.br:11449/71736Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T21:41:43Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit |
title |
The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit |
spellingShingle |
The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit Vasconcellos, M. A S Photosynthesis Physiology Source-sink relations Stable isotopes Passiflora edulis |
title_short |
The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit |
title_full |
The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit |
title_fullStr |
The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit |
title_full_unstemmed |
The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit |
title_sort |
The use of the carbon-13 in the partitioning of photosynthate in vegetative and reproductive twigs of 'Sweet' passion fruit |
author |
Vasconcellos, M. A S |
author_facet |
Vasconcellos, M. A S Leitão, G. R. Ducatti, C. [UNESP] Carvalho, A. J C |
author_role |
author |
author2 |
Leitão, G. R. Ducatti, C. [UNESP] Carvalho, A. J C |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Depto. Fitotecnia Universidade Estadual Paulista (Unesp) Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF) |
dc.contributor.author.fl_str_mv |
Vasconcellos, M. A S Leitão, G. R. Ducatti, C. [UNESP] Carvalho, A. J C |
dc.subject.por.fl_str_mv |
Photosynthesis Physiology Source-sink relations Stable isotopes Passiflora edulis |
topic |
Photosynthesis Physiology Source-sink relations Stable isotopes Passiflora edulis |
description |
This study's objective is to evaluate the photosynthates partitioning and source-sink relationships, in vegetative and reproductive twigs of sweet passion fruit, using the carbon-13, stable isotope of carbon. The leaves of vegetative and reproductive twigs were placed in a sealed chamber and 13CO 2 were injected for 30 minutes. After six hours, the different organs of the twig were collected and immersed in liquid nitrogen (-196°C). All plant samples were oven-dried, powdered and combusted in an elemental analyzer. The results showed that the methodology was efficient to evaluate the partitioning of photosynthates. In the vegetative twigs, the new open leaves, the closed leaves and growth meristem were the principal sink for the source leaves enriched with 13CO 2. In the reproductive twigs with only flowers buds, the source-sink relationship was changed and the flowers buds turn to be the principal sink and the growing leaves were secondary sinks. The presence of young fruits changed again the source-sink relationship of the twig, and they were the principal sinks. The apical leaves, with 60% of final leaf area were also a sink for photosynthates. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-30 2014-05-27T11:24:42Z 2014-05-27T11:24:42Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.actahort.org/books/864/864_31.htm Acta Horticulturae, v. 864, p. 231-238. 0567-7572 http://hdl.handle.net/11449/71736 2-s2.0-77957306579 1030251743943217 |
url |
http://www.actahort.org/books/864/864_31.htm http://hdl.handle.net/11449/71736 |
identifier_str_mv |
Acta Horticulturae, v. 864, p. 231-238. 0567-7572 2-s2.0-77957306579 1030251743943217 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Horticulturae 0,198 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
231-238 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964817538154496 |