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 | Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
15/07/2020 |
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Data da última atualização: |
15/07/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, V. A.; PRADO, F. M.; ANTUNES, W. C.; PAIVA, R. M. C.; FERRAO, M. A. G.; ANDRADE, A. C.; DI MASCIO, P.; LOUREIRO, M. E.; DAMATTA, F. M.; ALMEIDA, A. M. |
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Afiliação: |
VÂNIA APARECIDA SILVA, EPAMIG; FERNANDA MANSO PRADO, UNIVERSIDADE DE SÃO PAULO; WERNER CAMARGOS ANTUNES, UFV; RITA MÁRCIA CARDOSO PAIVA, UFV; MARIA AMELIA GAVA FERRAO, CNPCa; ALAN CARVALHO ANDRADE, CNPCa; PAOLO DI MASCIO, UNIVERSIDADE DE SÃO PAULO; MARCELO EHLERS LOUREIRO, UFV; FÁBIO MURILO DAMATTA, UFV; ANDRÉA MIYASAKA ALMEIDA, UNIVERSIDAD MAYOR. |
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Título: |
Reciprocal grafting between clones with contrasting drought tolerance suggests a key role of abscisic acid in coffee acclimation to drought stress. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Plant Growth Regulation, v. 85, n. 2, p. 221-229, 2018. |
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DOI: |
https://doi.org/10.1007/s10725-018-0385-5 |
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Idioma: |
Inglês |
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Conteúdo: |
The role of abscisic acid (ABA) in drought tolerance of Coffea canephora is unknown. To determine whether ABA is associated with drought tolerance and if the use of tolerant rootstocks could increase ABA and drought tolerance, we performed reciprocal grafting experiments between clones with contrasting tolerance to drought (clone 109, sensitive; and clone 120, tolerant). Plants were grown in large (120 L) pots in a greenhouse and subjected to drought stress by withholding irrigation. The non-grafted 120 plants and graft treatments with 120 as a rootstock showed a slower reduction of predawn leaf water potential (wpd) and a lower negative carbon isotopic composition ratio compared with the other grafting combinations in response to drought. The same 120 graft treatments also showed higher leaf ABA concentrations, lower levels of electrolyte leakage, and lower activities of ascorbate peroxidase and catalase under moderate (wpd= - 1.0 or - 1.5 MPa) and severe (wpd= - 3.0 MPa) drought. Root ABA concentrations were higher in plants with the 120 rootstocks regardless of watering regime. The 120 shoots could also contribute to drought tolerance because treatment with 120/109 rootstock/scion combination showed postponed dehydration, higher leaf ABA concentration, and lower leaf electrolyte leakage compared with the sensitive clone. We conclude that both the shoot and root systems of the tolerant clone can increase the concentrations of ABA in leaves in response to drought. This further suggests that ABA is associated with a delayed onset of severe water deficit and decreased oxidative damage in C. canephora. MenosThe role of abscisic acid (ABA) in drought tolerance of Coffea canephora is unknown. To determine whether ABA is associated with drought tolerance and if the use of tolerant rootstocks could increase ABA and drought tolerance, we performed reciprocal grafting experiments between clones with contrasting tolerance to drought (clone 109, sensitive; and clone 120, tolerant). Plants were grown in large (120 L) pots in a greenhouse and subjected to drought stress by withholding irrigation. The non-grafted 120 plants and graft treatments with 120 as a rootstock showed a slower reduction of predawn leaf water potential (wpd) and a lower negative carbon isotopic composition ratio compared with the other grafting combinations in response to drought. The same 120 graft treatments also showed higher leaf ABA concentrations, lower levels of electrolyte leakage, and lower activities of ascorbate peroxidase and catalase under moderate (wpd= - 1.0 or - 1.5 MPa) and severe (wpd= - 3.0 MPa) drought. Root ABA concentrations were higher in plants with the 120 rootstocks regardless of watering regime. The 120 shoots could also contribute to drought tolerance because treatment with 120/109 rootstock/scion combination showed postponed dehydration, higher leaf ABA concentration, and lower leaf electrolyte leakage compared with the sensitive clone. We conclude that both the shoot and root systems of the tolerant clone can increase the concentrations of ABA in leaves in response to drought. This furt... Mostrar Tudo |
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Thesagro: |
Clone; Coffea Canephora; Enxerto; Seca. |
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Categoria do assunto: |
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Marc: |
LEADER 02518naa a2200289 a 4500
001 2123868
005 2020-07-15
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10725-018-0385-5$2DOI
100 1 $aSILVA, V. A.
245 $aReciprocal grafting between clones with contrasting drought tolerance suggests a key role of abscisic acid in coffee acclimation to drought stress.$h[electronic resource]
260 $c2018
520 $aThe role of abscisic acid (ABA) in drought tolerance of Coffea canephora is unknown. To determine whether ABA is associated with drought tolerance and if the use of tolerant rootstocks could increase ABA and drought tolerance, we performed reciprocal grafting experiments between clones with contrasting tolerance to drought (clone 109, sensitive; and clone 120, tolerant). Plants were grown in large (120 L) pots in a greenhouse and subjected to drought stress by withholding irrigation. The non-grafted 120 plants and graft treatments with 120 as a rootstock showed a slower reduction of predawn leaf water potential (wpd) and a lower negative carbon isotopic composition ratio compared with the other grafting combinations in response to drought. The same 120 graft treatments also showed higher leaf ABA concentrations, lower levels of electrolyte leakage, and lower activities of ascorbate peroxidase and catalase under moderate (wpd= - 1.0 or - 1.5 MPa) and severe (wpd= - 3.0 MPa) drought. Root ABA concentrations were higher in plants with the 120 rootstocks regardless of watering regime. The 120 shoots could also contribute to drought tolerance because treatment with 120/109 rootstock/scion combination showed postponed dehydration, higher leaf ABA concentration, and lower leaf electrolyte leakage compared with the sensitive clone. We conclude that both the shoot and root systems of the tolerant clone can increase the concentrations of ABA in leaves in response to drought. This further suggests that ABA is associated with a delayed onset of severe water deficit and decreased oxidative damage in C. canephora.
650 $aClone
650 $aCoffea Canephora
650 $aEnxerto
650 $aSeca
700 1 $aPRADO, F. M.
700 1 $aANTUNES, W. C.
700 1 $aPAIVA, R. M. C.
700 1 $aFERRAO, M. A. G.
700 1 $aANDRADE, A. C.
700 1 $aDI MASCIO, P.
700 1 $aLOUREIRO, M. E.
700 1 $aDAMATTA, F. M.
700 1 $aALMEIDA, A. M.
773 $tPlant Growth Regulation$gv. 85, n. 2, p. 221-229, 2018.
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Registro original: |
Embrapa Café (CNPCa) |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
06/03/2015 |
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Data da última atualização: |
06/03/2015 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PIRES, P. P.; SANTOS NETO, Q. I. dos; COSTA JUNIOR, J. B. G. |
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Afiliação: |
PEDRO PAULO PIRES, CNPGC; QUINTINO IZIDIO DOS SANTOS NETO, CNPGC; JOÃO BATISTA GONÇALVES COSTA JUNIOR, Bolsista de Desenvolvimento Científico Regional do CNPq/Embrapa Grado de Corte. |
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Título: |
Histórico e desafios futuros da pesquisa em pecuária de precisão na Embrapa Gado de Corte. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE PECUÁRIA DE PRESIÇÃO APLICADA À BOVINOCUTURA DE CORTE, 1., 2014, Campo Grande. Anais...Campo Grande: Embrapa Gado de Corte , 2014. 6 p. |
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Idioma: |
Português |
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Palavras-Chave: |
Reflexos na cadeia da pecuária bovina. |
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Thesagro: |
Manejo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/119681/1/historico-e-desafios-futuros-da-pesquisa-em-pecuaria-de-precisao-na-embrapa-gado-de-corte-pires-et-al.pdf
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Marc: |
LEADER 00630nam a2200145 a 4500
001 2010821
005 2015-03-06
008 2014 bl uuuu u00u1 u #d
100 1 $aPIRES, P. P.
245 $aHistórico e desafios futuros da pesquisa em pecuária de precisão na Embrapa Gado de Corte.$h[electronic resource]
260 $aIn: SIMPÓSIO BRASILEIRO DE PECUÁRIA DE PRESIÇÃO APLICADA À BOVINOCUTURA DE CORTE, 1., 2014, Campo Grande. Anais...Campo Grande: Embrapa Gado de Corte , 2014. 6 p.$c2014
650 $aManejo
653 $aReflexos na cadeia da pecuária bovina
700 1 $aSANTOS NETO, Q. I. dos
700 1 $aCOSTA JUNIOR, J. B. G.
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