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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
29/08/2019 |
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Data da última atualização: |
24/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
REIS, C. O. dos; MAGALHAES, P. C.; AVILA, R. G.; ALMEIDA, L. G.; RABELO, V. M.; CARVALHO, D. T.; CABRAL, D. F.; KARAM, D.; SOUZA, T. C. de. |
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Afiliação: |
Caroline Oliveira dos Reis, Universidade Federal de Alfenas; PAULO CESAR MAGALHAES, CNPMS; Roniel Geraldo Avila, Universidade Federal de Lavras; Lorena Gabriela Almeida, Universidade Federal de Lavras; Valquíria Mikaela Rabelo, Universidade Federal de Alfenas; Diogo Teixeira Carvalho, Universidade Federal de Alfenas; Daniela Ferreira Cabral, Universidade Federal de Alfenas; DECIO KARAM, CNPMS; Thiago Correa de Souza, Universidade Federal de Alfenas. |
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Título: |
Action of N-succinyl and N,O-dicarboxymethyl chitosan derivatives on chlorophyll photosynthesis and fluorescence in drought-sensitive maize. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Plant Growth Regulation, v. 38, p. 619-630, 2019. |
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DOI: |
10.1007/s00344-018-9877-9 |
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Idioma: |
Inglês |
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Conteúdo: |
Chitosan induces plant tolerance to various abiotic stresses, including water deficit. However, its use may be limited, due to its constitution and low solubility in water. Thus, chemical modifications were proposed in this study with the objective of potentializing its biological effects in maize plants. The derivatives were semi-synthesized (N-succinyl and N,O-dicarboxymethyl) and, together with chitosan, they were applied, via the leaf, in a drought-sensitive maize hybrid (BRS1030) under pre-flowering water deficit. The water deficit was maintained for 15 days and the analyses were performed at the beginning and end of stress, and also in rehydration. Leaf water potential, gas exchange, chlorophyll fluorescence, and content of chloroplastidic pigments were evaluated. The use of the derivatives modulated photosynthesis parameters, affecting the involved mechanisms, such as stomatal activity, water use efficiency and photosystem II activity. Chlorophyll fluorescence indicated that the antenna complex was damaged by the water deficit condition, with a decrease in the energy flux in the electron transport chain and in the photochemical phase of photosynthesis. However, the spraying of chitosan derivatives induced tolerance to water deficit, suggesting that chitosan derivatives are more bioavailable to plants. Water stress decreases pigment content, but both the application of chitosan and derivatives increased these contents. It is concluded that chitosan derivatives improved the photosynthetic parameters in maize susceptible to drought, inducing tolerance to this stress, and the possible reasons and consequences are discussed. MenosChitosan induces plant tolerance to various abiotic stresses, including water deficit. However, its use may be limited, due to its constitution and low solubility in water. Thus, chemical modifications were proposed in this study with the objective of potentializing its biological effects in maize plants. The derivatives were semi-synthesized (N-succinyl and N,O-dicarboxymethyl) and, together with chitosan, they were applied, via the leaf, in a drought-sensitive maize hybrid (BRS1030) under pre-flowering water deficit. The water deficit was maintained for 15 days and the analyses were performed at the beginning and end of stress, and also in rehydration. Leaf water potential, gas exchange, chlorophyll fluorescence, and content of chloroplastidic pigments were evaluated. The use of the derivatives modulated photosynthesis parameters, affecting the involved mechanisms, such as stomatal activity, water use efficiency and photosystem II activity. Chlorophyll fluorescence indicated that the antenna complex was damaged by the water deficit condition, with a decrease in the energy flux in the electron transport chain and in the photochemical phase of photosynthesis. However, the spraying of chitosan derivatives induced tolerance to water deficit, suggesting that chitosan derivatives are more bioavailable to plants. Water stress decreases pigment content, but both the application of chitosan and derivatives increased these contents. It is concluded that chitosan derivatives improved... Mostrar Tudo |
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Palavras-Chave: |
Bioestimulante; Déficit hídrico; Potencial hídrico foliar; Trocas gasosas. |
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Thesagro: |
Milho. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/201386/1/Action-N-succinyl.pdf
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Marc: |
LEADER 02553naa a2200289 a 4500
001 2111698
005 2020-01-24
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1007/s00344-018-9877-9$2DOI
100 1 $aREIS, C. O. dos
245 $aAction of N-succinyl and N,O-dicarboxymethyl chitosan derivatives on chlorophyll photosynthesis and fluorescence in drought-sensitive maize.$h[electronic resource]
260 $c2019
520 $aChitosan induces plant tolerance to various abiotic stresses, including water deficit. However, its use may be limited, due to its constitution and low solubility in water. Thus, chemical modifications were proposed in this study with the objective of potentializing its biological effects in maize plants. The derivatives were semi-synthesized (N-succinyl and N,O-dicarboxymethyl) and, together with chitosan, they were applied, via the leaf, in a drought-sensitive maize hybrid (BRS1030) under pre-flowering water deficit. The water deficit was maintained for 15 days and the analyses were performed at the beginning and end of stress, and also in rehydration. Leaf water potential, gas exchange, chlorophyll fluorescence, and content of chloroplastidic pigments were evaluated. The use of the derivatives modulated photosynthesis parameters, affecting the involved mechanisms, such as stomatal activity, water use efficiency and photosystem II activity. Chlorophyll fluorescence indicated that the antenna complex was damaged by the water deficit condition, with a decrease in the energy flux in the electron transport chain and in the photochemical phase of photosynthesis. However, the spraying of chitosan derivatives induced tolerance to water deficit, suggesting that chitosan derivatives are more bioavailable to plants. Water stress decreases pigment content, but both the application of chitosan and derivatives increased these contents. It is concluded that chitosan derivatives improved the photosynthetic parameters in maize susceptible to drought, inducing tolerance to this stress, and the possible reasons and consequences are discussed.
650 $aMilho
653 $aBioestimulante
653 $aDéficit hídrico
653 $aPotencial hídrico foliar
653 $aTrocas gasosas
700 1 $aMAGALHAES, P. C.
700 1 $aAVILA, R. G.
700 1 $aALMEIDA, L. G.
700 1 $aRABELO, V. M.
700 1 $aCARVALHO, D. T.
700 1 $aCABRAL, D. F.
700 1 $aKARAM, D.
700 1 $aSOUZA, T. C. de
773 $tJournal of Plant Growth Regulation$gv. 38, p. 619-630, 2019.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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| Registros recuperados : 566 | |
| 101. |  | COSTA, N. P.; FRANÇA NETO, J. B.; KRZYZANOWSKI, F. C.; HENNING, A. A.; PEREIRA, J. E. Avaliação de metodologia alternativa para o teste de tetrazólio em sementes de soja. Informativo ABRATES, Curitiba, v. 7, n. 1/2, p. 195, jul; /ago. 1997. Número especial, ref. 323. Edição do X Congresso Brasileiro de Sementes, 1997.| Biblioteca(s): Embrapa Soja. |
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| 102. | | COSTA, N. P.; FRANÇA NETO, J. B.; KRZYZANOWSKI, F. C.; HENNING, A. A.; PEREIRA, J. E. Avaliação de metodologia alternativa para o teste de tetrazólio, em sementes de soja. In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 19., 1997, Jaboticabal. Ata e resumos. Londrina: Embrapa-CNPSo, 1997. p. 308. (Embrapa-CNPSo. Documentos, 107).| Biblioteca(s): Embrapa Soja. |
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| 104. | | SILVA, R. C. da; GRZYBOWSKI, C. R. de S.; FRANÇA-NETO, J. B.; PANOBIANCO, M. Adaptação do teste de tretrazólio para avaliação da viabilidade e do vigor de sementes de girassol. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 1, p. 105-113, jan. 2013. Título em inglês: Adaptation of the tetrazolium test for assessment of sunflower seed viability and vigor.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 105. | | FRANÇA-NETO, J. B.; HENNING, A. A.; KRZYZANOWSKI, F. C.; HENNING, F. A.; LORINI, I. Adoção do tratamento industrial de sementes de soja no Brasil, safra 2014/15. Informativo ABRATES, Londrina, v. 25, n. 1, p. 26-29, abr. 2015. Número especial. Resumo da palestra apresentada no XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, set. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Soja. |
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| 106. | | FRANÇA-NETO, J. B.; HENNING, A. A.; KRZYZANOWSKI, F. C.; HENNING, F. A.; LORINI, I. Adoção do tratamento industrial de sementes de soja no Brasil, safra 2014/15. In: CONGRESSO BRASILEIRO DE SOJA, 7.; MERCOSOJA, 2015, Florianópolis. Tecnologia e mercado global: perspectivas para soja: anais. Londrina: Embrapa Soja, 2015. 4 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 107. | | FRANÇA-NETO, J. B.; HENNING, A. A.; KRZYZANOWSKI, F. C.; HENNING, F. A.; LORINI, I. Adoção do tratamento industrial de sementes de soja no Brasil, safra 2014/15. Informativo ABRATES, Brasília, v. 25, n.2, set. 2015. Edição do Anais do XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, set. 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 108. | | FRANÇA-NETO, J. B.; PADUA, G. P.; COSTA, O.; KRZYZANOWSKI, F. C.; GAZZIERO, D. L. P. Aplicação de glyphosate como dessecante em pré-colheita: efeitos sobre a qualidade de sementes de soja. Informativo ABRATES, Londrina, v. 19, n. 2, p. 210, set. 2009. Edição Especial, ref. 202. Edição dos Resumos do XVI Congresso de Sementes, Curitiba, ago./set. 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 110. | | COSTA, N. P.; FRANÇA-NETO, J. B.; KRZYZANOWSKI, F. C.; HENNING, A. A.; MESQUITA, C. M. Antecipacao de colheita de sementes de soja. Informativo ABRATES, Londrina, v.11, n.2, p.96, set. 2001. Numero especial, ref. 101. Edicao de Resumos do XII Congresso Brasileiro de Sementes, 17 a 20 de Setembro de 2001, Curitiba, PR.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 113. | | FRANÇA-NETO, J. B.; KRZYZANOWSKI, F. C.; HENNING, A. A.; COSTA, N. P. Afericao da metodologia dos testes de tetrazolio de envelhecimento acelerado para a avaliacao da qualidade de sementes de soja. Informativo ABRATES, Londrina, v.11, n.2, p.186, set. 2001. Numero especial, ref. 278. Edicao de Resumos do XII Congresso Brasileiro de Sementes, 17 a 20 de Setembro de 2001, Curitiba, PR.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 115. | | HENNING, A. A.; FRANÇA-NETO, J. B.; KRZYZANOWSKI, F. C.; HENNING, F. A.; LORINI, I. Aspectos técnicos sobre o tratamento industrial de sementes. Informativo ABRATES, v. 25, n. 2, p. 29, set. 2015. Número especial. Resumo da palestra apresentada no XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, set. 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 119. | | FRANÇA-NETO, J. B.; KRZYZANOWSKI, F. C.; WEST, S. H.; HENNING, A. A.; COSTA, N. P. Comparacao da qualidade de sementes de soja com tegumento preto e amarelo. Informativo ABRATES, Curitiba, v.9, n.1/2, p.33, jul./ago. 1999. Numero especial, ref. 005. Resumo apresentado no XI Congresso Brasileiro de Sementes.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 120. | | FRANÇA-NETO, J. B.; HENNING, A. A.; KRZYZANOWSKI, F. C.; HENNING, F. A.; LORINI, I. Capacitação de técnicos nos testes de tetrazólio e de patologia de sementes de soja pela Embrapa soja. Informativo ABRATES, Brasília, v. 25, n.2, set. 2015. Edição do Anais do XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, set. 2015.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 566 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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