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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
04/12/2023 |
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Data da última atualização: |
28/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LOPES FILHO, W. R. L.; RODRIGUES, F. H. S.; FERREIRA, I. V. L.; CORREA, L. O.; CUNHA, R. L.; PINHEIRO, H. A. |
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Afiliação: |
WAGNER ROMULO LIMA LOPES FILHO, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; FLAVIO HENRIQUE SANTOS RODRIGUES, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; IZABELY VITÓRIA LUCAS FERREIRA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; LORENA OLIVEIRA CORREA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; ROBERTO LISBOA CUNHA, CPATU; HUGO ALVES PINHEIRO, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA. |
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Título: |
Physiological responses of young oil palm (Elaeis guineensis Jacq.) plants to repetitive water deficit events. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Industrial Crops & Products, v. 172, Article 114052, 2021. |
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DOI: |
https://doi.org/10.1016/j.indcrop.2021.114052 |
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Idioma: |
Inglês |
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Conteúdo: |
Stomatal and non-stomatal limitations to photosynthesis and acclimation of the photosynthetic machinery to repetitive water deficit (WD) events were investigated in oil palms (Elaeis guineensis Jacq.). For this, well-watered plants (control treatment) were compared with plants subjected to one, two, and three WD events imposed by withholding irrigation until their predawn leaf water potential (Tpd) reached around -2.5 MPa. Treatment comparisons were performed over 28 days. The Tpd decreased equally between WD treatments. Decreases in net CO2 assimilation rate (A) were similar between stressed plants until day 7. In the following days, the A was higher in plants thrice stressed than in those stressed once. Stomatal conductance decreased similarly between WD treatments, but mesophyll conductance to CO2 was lower in plants subjected to a single WD. Chloroplast CO2 concentration decreased similarly between plants subjected to one and three WD events until day 14, but it was lower in the former on subsequent days. Plants subjected to a single WD event showed lower Ribulose 1,5 bisphosphate carboxylase/oxygenase (Rubisco) activity, maximum rate of electron transport (Jmax), and higher rates of photorespiration and dark respiration than other treatments. Plants subjected to one WD event also showed lower maximum quantum efficiency of photosystem II (PSII) photochemistry and PSII maximum efficiency concomitantly with higher malondialdehyde content. The results support that repetitive WD events induce the acclimation of the photosynthetic machinery in oil palm through adjustments in carboxylase Rubisco activity, Jmax, photorespiration, and respiration rates, as well as attenuating oxidative damages to PSII and membrane lipids. MenosStomatal and non-stomatal limitations to photosynthesis and acclimation of the photosynthetic machinery to repetitive water deficit (WD) events were investigated in oil palms (Elaeis guineensis Jacq.). For this, well-watered plants (control treatment) were compared with plants subjected to one, two, and three WD events imposed by withholding irrigation until their predawn leaf water potential (Tpd) reached around -2.5 MPa. Treatment comparisons were performed over 28 days. The Tpd decreased equally between WD treatments. Decreases in net CO2 assimilation rate (A) were similar between stressed plants until day 7. In the following days, the A was higher in plants thrice stressed than in those stressed once. Stomatal conductance decreased similarly between WD treatments, but mesophyll conductance to CO2 was lower in plants subjected to a single WD. Chloroplast CO2 concentration decreased similarly between plants subjected to one and three WD events until day 14, but it was lower in the former on subsequent days. Plants subjected to a single WD event showed lower Ribulose 1,5 bisphosphate carboxylase/oxygenase (Rubisco) activity, maximum rate of electron transport (Jmax), and higher rates of photorespiration and dark respiration than other treatments. Plants subjected to one WD event also showed lower maximum quantum efficiency of photosystem II (PSII) photochemistry and PSII maximum efficiency concomitantly with higher malondialdehyde content. The results support that repetitiv... Mostrar Tudo |
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Thesagro: |
Água; Dendê; Elaeis Guineensis. |
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Thesaurus Nal: |
Photorespiration. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02511naa a2200241 a 4500
001 2159136
005 2024-02-28
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.indcrop.2021.114052$2DOI
100 1 $aLOPES FILHO, W. R. L.
245 $aPhysiological responses of young oil palm (Elaeis guineensis Jacq.) plants to repetitive water deficit events.$h[electronic resource]
260 $c2021
520 $aStomatal and non-stomatal limitations to photosynthesis and acclimation of the photosynthetic machinery to repetitive water deficit (WD) events were investigated in oil palms (Elaeis guineensis Jacq.). For this, well-watered plants (control treatment) were compared with plants subjected to one, two, and three WD events imposed by withholding irrigation until their predawn leaf water potential (Tpd) reached around -2.5 MPa. Treatment comparisons were performed over 28 days. The Tpd decreased equally between WD treatments. Decreases in net CO2 assimilation rate (A) were similar between stressed plants until day 7. In the following days, the A was higher in plants thrice stressed than in those stressed once. Stomatal conductance decreased similarly between WD treatments, but mesophyll conductance to CO2 was lower in plants subjected to a single WD. Chloroplast CO2 concentration decreased similarly between plants subjected to one and three WD events until day 14, but it was lower in the former on subsequent days. Plants subjected to a single WD event showed lower Ribulose 1,5 bisphosphate carboxylase/oxygenase (Rubisco) activity, maximum rate of electron transport (Jmax), and higher rates of photorespiration and dark respiration than other treatments. Plants subjected to one WD event also showed lower maximum quantum efficiency of photosystem II (PSII) photochemistry and PSII maximum efficiency concomitantly with higher malondialdehyde content. The results support that repetitive WD events induce the acclimation of the photosynthetic machinery in oil palm through adjustments in carboxylase Rubisco activity, Jmax, photorespiration, and respiration rates, as well as attenuating oxidative damages to PSII and membrane lipids.
650 $aPhotorespiration
650 $aÁgua
650 $aDendê
650 $aElaeis Guineensis
700 1 $aRODRIGUES, F. H. S.
700 1 $aFERREIRA, I. V. L.
700 1 $aCORREA, L. O.
700 1 $aCUNHA, R. L.
700 1 $aPINHEIRO, H. A.
773 $tIndustrial Crops & Products$gv. 172, Article 114052, 2021.
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Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 7 | |
| 2. |  | BARROS, J. M.; VASCONCELOS, S. S.; SANTIAGO, W. R.; LEMOS, E. C. de M. Estoque de raízes e serapilheira em diferentes sistemas de produção agropecuária na Amazônia Oriental. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 15., 2011, Belém, PA. A ciência de fazer ciência: anais. Belém, PA: Embrapa Amazônia Oriental, 2011. 1 CD-ROM. PIBIC-2011.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 3. | | LEMOS, E. C. M.; VASCONCELOS, S. S.; BARROS, J. M.; SILVA, A. K. L. Respiração do solo em sistemas de produção agropecuária no Nordeste Paraense. In: SEMINÁRIO GESTABACIAS, 1., 2010, Belém, PA. Resultados de pesquisas em mesobacias do Nordeste paraense e sua aplicação no desenvolvimento rural. Belém, PA: Embrapa Amazônia Oriental: Projeto Gestabacias, 2010. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 5. | | LEMOS, E. C. M.; VASCONCELOS, S. S.; BARROS, J. M.; SILVA, A. K. L.; CARVALHO, C. J. R. de. Variação sazonal da respiração do solo em diferentes sistemas de produção agropecuária na Amazônia Oriental. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 29.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 13.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 11.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 8., 2010, Guarapari. Fontes de nutrientes e produção agrícola: modelando o futuro: anais. Viçosa, MG: SBCS, 2010. FERTBIO 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 6. | | LEMOS, E. C. M.; VASCONCELOS, S. S.; SANTIAGO, M. R.; OLIVEIRA JUNIOR, M. C. M. de; SOUZA, C. M. de A. The responses of soil, litter and root carbon stocks to the conversion of forest regrowth to crop and tree production systems used by smallholder farmers in eastern Amazonia. Soil Use and Management, v. 32, n. 4, p. 504-514, Dec. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 7. | | FERREIRA, L. P.; HENNING, A. A.; YORINORI, J. T.; FRANÇA NETO, J. de B.; SCHUCK, E.; LEMOS, E. C.; AZEREDO, J. A. D. Ocorrência do míldio (Plasmopara halstedii) em girassol, no Brasil. In: CONGRESSO BRASILEIRO DE SEMENTES, 3., 1983, Campinas. Resumo dos trabalhos técnicos. Brasília: ABRATES, 1983. p. 93.| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 7 | |
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