| |
|
|
|
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 |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 7 | |
| 1. |  | FONSECA, M. de M. da. Biologia reprodutiva de Butia odorata (Barb. Rodr.) Noblick. 2014. 59 f. Dissertação (Mestrado). Programa de Pós-Graduação em Agronomia. Área de concentração: Fitomelhoramento. Universidade Federal de Pelotas. Faculdade de Agronomia Eliseu Maciel, 2014. Orientador Rosa Lía Barbieri (CPACT); co-orientador...| Tipo: Orientação de Tese de Pós-Graduação |
| Biblioteca(s): Embrapa Clima Temperado. |
|   |
| 4. | | BARBIERI, R. L.; RIVAS, M.; FILIPPINI ALBA, J. M.; MISTURA, C. C.; CASTRO, C. M.; COSTA, F. A. da; CUNHA, H.; FONSECA, M. de M. da; CALVETE, A. Conservación in situ y uso sustentable de los palmares de Butia odorata en la pampa Brasileña y Uruguaya. In: SIMPOSIO INTERNACIONAL DE RECURSOS GENETICOS PARA AMERICA LATINA Y EL CARIBE, 9., 2013, El Salvador. Memoria resúmenes. El Salvador, Centa, 2013.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
|  |
| 5. | | FONSECA, G. de M. da; FONSECA, M. de M. da; MAGALHAES JUNIOR, A. M. de; FAGUNDES, P. R. R.; MORAES, O. P. de; SEVERO, A. C. M.; MOURA NETO, F. de; AZAMBUJA, V. V. Avaliação de linhagens de arroz irrigado de ciclo médio em ensaios de VCU do programa de melhoramento genético da Embrapa. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA E PÓS GRADUAÇÃO DA EMBRAPA CLIMA TEMPERADO, 3., 2010, Pelotas. resumos e palestras... Pelotas: Embrapa Clima Temperado, 2010. Anais: Carreira, ética e inovação: o que você está fazendo? Pelotas: Embrapa Clima Temperado, 2010. Editado por Ivan Rodrigues de Almeida, Leonardo Ferreira Dutra e Jamir Luis Silva da Silva. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
| |
| 6. | | PADILHA, H. K. M.; BARBOSA, L. F.; FONSECA, M. de M. da; CARBONARI, T.; CASTRO, M. L.; SELEDES, R. M.; VASCONCELOS, C. S.; VILLELA, J. C. B.; CASTRO, C. M.; BARBIERI, R. L. Variabilidade genética para caracteres relacionados à produção em acessos de Capsicum annuum. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 7., 2013, Uberlândia. Variedade melhorada: a força da nossa agricultura: anais. Viçosa, MG: SBMP, 2013. p. 3128-3131.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
| |
| 7. | | FONSECA, G. de M. da; FONSECA, M. de M. da; MAGALHAES JUNIOR, A. M. de; FAGUNDES, P. R. R.; MORAES, O. P. de; SEVERO, A. C. M.; MOURA NETO, F. de; AZAMBUJA, V. V. Desempenho de linhagens de arroz irrigado do programa de melhoramento genético da Embrapa em ensaio regional de rendimento. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA E PÓS GRADUAÇÃO DA EMBRAPA CLIMA TEMPERADO, 3., 2010, Pelotas. resumos e palestras... Pelotas: Embrapa Clima Temperado, 2010. Anais: Carreira, ética e inovação: o que você está fazendo? Pelotas: Embrapa Clima Temperado, 2010. Editado por Ivan Rodrigues de Almeida, Leonardo Ferreira Dutra e Jamir Luis Silva da Silva. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
| |
| Registros recuperados : 7 | |
|
| Expressão de busca inválida. Verifique!!! |
|
|
