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Registros recuperados : 6 | |
2. | | 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. Action of N-succinyl and N,O-dicarboxymethyl chitosan derivatives on chlorophyll photosynthesis and fluorescence in drought-sensitive maize. Journal of Plant Growth Regulation, v. 38, p. 619-630, 2019. Biblioteca(s): Embrapa Milho e Sorgo. |
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3. | | REIS, C. O. dos; MAGALHAES, P. C.; AMBROSIO, A. dos S.; ALMEIDA, L. G.; CARVALHO, D. T.; SOUZA, T. C, de. Do chitosan and its derivatives have the same protective effect on drought-contrasting maize genotypes? An analysis of physiological and production processes. Australian Journal of Crop Science, v. 16, n. 2, p. 208-215, 2022. Biblioteca(s): Embrapa Milho e Sorgo. |
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4. | | ÁVILA, R. G.; MAGALHAES, P. C.; SILVA, E. M. da; ALVARENGA, A. A. de; REIS, C. O. dos; CUSTÓDIO. A. M.; JAKELAITIS, A.; SOUZA, T. C. de. Foliar application of potassium nitrate induces tolerance to water deficit in pre-flowering sorghum plants. Acta Scientiarum. Agronomy, v. 44, n. 1, e53069, 2022. Biblioteca(s): Embrapa Milho e Sorgo. |
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5. | | ALMEIDA, L. G.; SILVA, E. M. da; MAGALHAES, P. C.; KARAM, D.; REIS, C. O. dos; GOMES JÚNIOR, C. C.; MARQUES, D. M. Root system of maize plants cultivated under water deficit conditions with application of chitosan. Revista Brasileira de Milho e Sorgo, v. 19, e1131, 2020. Biblioteca(s): Embrapa Milho e Sorgo. |
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6. | | MARQUES, D. M.; MAGALHAES, P. C.; MARRIEL, I. E.; GOMES JÚNIOR, C. C.; SILVA, A. B. da; REIS, C. O. dos; SOUZA, K. R. D. de; SOUZA, T. C. de. Does Azospirillum brasilense mitigate water stress and reduce the use of nitrogen fertilizers in maize? South African Journal of Botany, v. 156, p. 278-285, 2023. Biblioteca(s): Embrapa Milho e Sorgo. |
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Registros recuperados : 6 | |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
29/08/2019 |
Data da última atualização: |
24/01/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
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. |
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. |
Título: |
Action of N-succinyl and N,O-dicarboxymethyl chitosan derivatives on chlorophyll photosynthesis and fluorescence in drought-sensitive maize. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Journal of Plant Growth Regulation, v. 38, p. 619-630, 2019. |
DOI: |
10.1007/s00344-018-9877-9 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Bioestimulante; Déficit hídrico; Potencial hídrico foliar; Trocas gasosas. |
Thesagro: |
Milho. |
Categoria do assunto: |
S Ciências Biológicas |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/201386/1/Action-N-succinyl.pdf
|
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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