Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/22693 |
Resumo: | The flower bud abortion is one of the main problems that limit commercial pear (Pyrus pyrifolia) production in the southern region of Brazil. Insufficient chilling during the dormancy period is known as the main factor of this problem. One of the hypotheses to explain this problem is that the starch mobilization and carbohydrate fluxes to the buds are impeded when mild temperatures occurred during winter. This study compared the total soluble sugars (TSS) and reducing sugars (RS) concentrations, the cell wall acid invertase (CWAI - EC 3.2.1.26) and sucrose-phosphate synthase (SPS - EC 2.4.1.14) activities in wood of branches and floral buds of Japanese pear trees cv. Housui, grafted on Pyrus calleryana and submitted to chilling conditions during the dormancy period. Treatments were: (i) natural conditions; (ii) continuous artificial chilling; (iii) alternating temperatures, and (iv) total chilling privation. TSS and RS contents, as well as CWAI and SPS activities in tissues of branches that received insufficient chilling were lower than those that received sufficient chilling during winter. The starch concentration was superior in wood tissues of branches kept under chilling privation. The chilling privation disturbs carbohydrate mobilization in pear trees, reducing the sucrose synthesis capacity in wood tissues (source) and sucrose importation by the floral buds (sink). |
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Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees Pyrus pyrifoliacarbohydratesfloral bud abortioncell wall acid invertasesucrose-phosphate synthase The flower bud abortion is one of the main problems that limit commercial pear (Pyrus pyrifolia) production in the southern region of Brazil. Insufficient chilling during the dormancy period is known as the main factor of this problem. One of the hypotheses to explain this problem is that the starch mobilization and carbohydrate fluxes to the buds are impeded when mild temperatures occurred during winter. This study compared the total soluble sugars (TSS) and reducing sugars (RS) concentrations, the cell wall acid invertase (CWAI - EC 3.2.1.26) and sucrose-phosphate synthase (SPS - EC 2.4.1.14) activities in wood of branches and floral buds of Japanese pear trees cv. Housui, grafted on Pyrus calleryana and submitted to chilling conditions during the dormancy period. Treatments were: (i) natural conditions; (ii) continuous artificial chilling; (iii) alternating temperatures, and (iv) total chilling privation. TSS and RS contents, as well as CWAI and SPS activities in tissues of branches that received insufficient chilling were lower than those that received sufficient chilling during winter. The starch concentration was superior in wood tissues of branches kept under chilling privation. The chilling privation disturbs carbohydrate mobilization in pear trees, reducing the sucrose synthesis capacity in wood tissues (source) and sucrose importation by the floral buds (sink). Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2011-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/2269310.1590/S0103-90162011000400011Scientia Agricola; v. 68 n. 4 (2011); 462-468Scientia Agricola; Vol. 68 Núm. 4 (2011); 462-468Scientia Agricola; Vol. 68 No. 4 (2011); 462-4681678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/22693/24717Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessMarafon, Anderson CarlosCitadin, IdemirAmarante, Luciano doHerter, Flávio GilbertoHawerroth, Fernando José2015-07-07T19:12:06Zoai:revistas.usp.br:article/22693Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2015-07-07T19:12:06Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees |
title |
Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees |
spellingShingle |
Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees Marafon, Anderson Carlos Pyrus pyrifolia carbohydrates floral bud abortion cell wall acid invertase sucrose-phosphate synthase |
title_short |
Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees |
title_full |
Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees |
title_fullStr |
Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees |
title_full_unstemmed |
Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees |
title_sort |
Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees |
author |
Marafon, Anderson Carlos |
author_facet |
Marafon, Anderson Carlos Citadin, Idemir Amarante, Luciano do Herter, Flávio Gilberto Hawerroth, Fernando José |
author_role |
author |
author2 |
Citadin, Idemir Amarante, Luciano do Herter, Flávio Gilberto Hawerroth, Fernando José |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Marafon, Anderson Carlos Citadin, Idemir Amarante, Luciano do Herter, Flávio Gilberto Hawerroth, Fernando José |
dc.subject.por.fl_str_mv |
Pyrus pyrifolia carbohydrates floral bud abortion cell wall acid invertase sucrose-phosphate synthase |
topic |
Pyrus pyrifolia carbohydrates floral bud abortion cell wall acid invertase sucrose-phosphate synthase |
description |
The flower bud abortion is one of the main problems that limit commercial pear (Pyrus pyrifolia) production in the southern region of Brazil. Insufficient chilling during the dormancy period is known as the main factor of this problem. One of the hypotheses to explain this problem is that the starch mobilization and carbohydrate fluxes to the buds are impeded when mild temperatures occurred during winter. This study compared the total soluble sugars (TSS) and reducing sugars (RS) concentrations, the cell wall acid invertase (CWAI - EC 3.2.1.26) and sucrose-phosphate synthase (SPS - EC 2.4.1.14) activities in wood of branches and floral buds of Japanese pear trees cv. Housui, grafted on Pyrus calleryana and submitted to chilling conditions during the dormancy period. Treatments were: (i) natural conditions; (ii) continuous artificial chilling; (iii) alternating temperatures, and (iv) total chilling privation. TSS and RS contents, as well as CWAI and SPS activities in tissues of branches that received insufficient chilling were lower than those that received sufficient chilling during winter. The starch concentration was superior in wood tissues of branches kept under chilling privation. The chilling privation disturbs carbohydrate mobilization in pear trees, reducing the sucrose synthesis capacity in wood tissues (source) and sucrose importation by the floral buds (sink). |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/22693 10.1590/S0103-90162011000400011 |
url |
https://www.revistas.usp.br/sa/article/view/22693 |
identifier_str_mv |
10.1590/S0103-90162011000400011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/22693/24717 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 68 n. 4 (2011); 462-468 Scientia Agricola; Vol. 68 Núm. 4 (2011); 462-468 Scientia Agricola; Vol. 68 No. 4 (2011); 462-468 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1800222791473037312 |