Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis

Detalhes bibliográficos
Autor(a) principal: Domingos, Sara
Data de Publicação: 2016
Outros Autores: Fino, Joana, Cardoso, Vânia, Sánchez, Claudia, Ramalho, José C., Larcher, Roberto, Paulo, Octávio S., Oliveira, Cristina M., Goulao, Luis
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/13737
Resumo: Research Article
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spelling Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitisflower sheddinggibberellingrapevinelight reductionmetabolomicsRNA-SeqResearch ArticleBackground: Abscission is a highly coordinated developmental process by which plants control vegetative and reproductive organs load. Aiming at get new insights on flower abscission regulation, changes in the global transcriptome, metabolome and physiology were analyzed in ‘Thompson Seedless’ grapevine (Vitis vinifera L.) inflorescences, using gibberellic acid (GAc) spraying and shading as abscission stimuli, applied at bloom. Results: Natural flower drop rates increased from 63.1 % in non-treated vines to 83 % and 99 % in response to GAc and shade treatments, respectively. Both treatments had a broad effect on inflorescences metabolism. Specific impacts from shade included photosynthesis inhibition, associated nutritional stress, carbon/nitrogen imbalance and cell division repression, whereas GAc spraying induced energetic metabolism simultaneously with induction of nucleotide biosynthesis and carbon metabolism, therefore, disclosing alternative mechanisms to regulate abscission. Regarding secondary metabolism, changes in flavonoid metabolism were the most represented metabolic pathways in the samples collected following GAc treatment while phenylpropanoid and stilbenoid related pathways were predominantly affected in the inflorescences by the shade treatment. However, both GAc and shade treated inflorescences revealed also shared pathways, that involved the regulation of putrescine catabolism, the repression of gibberellin biosynthesis, the induction of auxin biosynthesis and the activation of ethylene signaling pathways and antioxidant mechanisms, although often the quantitative changes occurred on specific transcripts and metabolites of the pathways. Conclusions: Globally, the results suggest that chemical and environmental cues induced contrasting effects on inflorescence metabolism, triggering flower abscission by different mechanisms and pinpointing the participation of novel abscission regulators. Grapevine showed to be considered a valid model to study molecular pathways of flower abscission competence acquisition, noticeably responding to independent stimuliBMCRepositório da Universidade de LisboaDomingos, SaraFino, JoanaCardoso, VâniaSánchez, ClaudiaRamalho, José C.Larcher, RobertoPaulo, Octávio S.Oliveira, Cristina M.Goulao, Luis2017-06-08T12:40:37Z20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/13737eng10.1186/s12870-016-0722-7info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:43:49Zoai:www.repository.utl.pt:10400.5/13737Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:59:40.750292Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis
title Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis
spellingShingle Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis
Domingos, Sara
flower shedding
gibberellin
grapevine
light reduction
metabolomics
RNA-Seq
title_short Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis
title_full Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis
title_fullStr Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis
title_full_unstemmed Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis
title_sort Shared and divergent pathways for flower abscission are trggered by gibberellic acid and carbon starvation in seedless Vitis
author Domingos, Sara
author_facet Domingos, Sara
Fino, Joana
Cardoso, Vânia
Sánchez, Claudia
Ramalho, José C.
Larcher, Roberto
Paulo, Octávio S.
Oliveira, Cristina M.
Goulao, Luis
author_role author
author2 Fino, Joana
Cardoso, Vânia
Sánchez, Claudia
Ramalho, José C.
Larcher, Roberto
Paulo, Octávio S.
Oliveira, Cristina M.
Goulao, Luis
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Domingos, Sara
Fino, Joana
Cardoso, Vânia
Sánchez, Claudia
Ramalho, José C.
Larcher, Roberto
Paulo, Octávio S.
Oliveira, Cristina M.
Goulao, Luis
dc.subject.por.fl_str_mv flower shedding
gibberellin
grapevine
light reduction
metabolomics
RNA-Seq
topic flower shedding
gibberellin
grapevine
light reduction
metabolomics
RNA-Seq
description Research Article
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-01-01T00:00:00Z
2017-06-08T12:40:37Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/13737
url http://hdl.handle.net/10400.5/13737
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1186/s12870-016-0722-7
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv BMC
publisher.none.fl_str_mv BMC
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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