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| Registros recuperados : 1 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
10/12/2019 |
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Data da última atualização: |
10/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
ALMEIDA, L. G.; MAGALHAES, P. C.; KARAM, D.; SILVA, E. M. da; ALVARENGA, A. A. |
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Afiliação: |
Lorena Gabriela Almeida, Universidade Federal de Lavras; PAULO CESAR MAGALHAES, CNPMS; DECIO KARAM, CNPMS; Eder Marcos da Silva, Universidade Federal de Lavras; Amauri Alves Alvarenga, Universidade Federal de Lavras. |
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Título: |
Chitosan application in the induction of water deficit tolerance in maize plants. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Acta Scientiarum. Agronomy, v. 42, e42463, 2020. |
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DOI: |
10.4025/actasciagron.v42i1.42463 |
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Idioma: |
Inglês |
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Conteúdo: |
The present research seeks to elucidate the feasibility of chitosan (CHT) in the induction of water deficit tolerance in different maize hybrids, contrasting tolerance to water restriction, tolerance and sensitivity. The maize plants were subjected to water deficit and foliar application of different chitosan doses (60, 100, 140, and 180 mg L-1) at the pre-flowering growth stage and evaluated during the stress period of fifteen days. To understand the induction behaviour of the tolerance to water restriction, biophysical parameters, such as water potential, relative water content and chlorophyll content, gas exchange, and biochemical assays, were quantified based on the activity of SOD, CAT, APX, and PAL antioxidant enzymes, lipid peroxidation activity and hydrogen peroxide content. Among the treatments, maize plants subjected to chitosan foliar application at a dose of 140 mg L-1 presented similar behavioural responses to plants under favourable irrigation conditions. Such positive responses are related to the high degree of activity of antioxidant enzymes, gas exchange and low levels of lipid peroxidation and hydrogen peroxide. The results support the potential use of CHT to increase tolerance to water stress. |
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Palavras-Chave: |
Antiperspirante; Estresse hídrico; Troca de gás. |
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Thesagro: |
Antioxidante; Enzima; Milho. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206631/1/Chitosan-application.pdf
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Marc: |
LEADER 01956naa a2200253 a 4500
001 2116512
005 2019-12-10
008 2020 bl uuuu u00u1 u #d
024 7 $a10.4025/actasciagron.v42i1.42463$2DOI
100 1 $aALMEIDA, L. G.
245 $aChitosan application in the induction of water deficit tolerance in maize plants.$h[electronic resource]
260 $c2020
520 $aThe present research seeks to elucidate the feasibility of chitosan (CHT) in the induction of water deficit tolerance in different maize hybrids, contrasting tolerance to water restriction, tolerance and sensitivity. The maize plants were subjected to water deficit and foliar application of different chitosan doses (60, 100, 140, and 180 mg L-1) at the pre-flowering growth stage and evaluated during the stress period of fifteen days. To understand the induction behaviour of the tolerance to water restriction, biophysical parameters, such as water potential, relative water content and chlorophyll content, gas exchange, and biochemical assays, were quantified based on the activity of SOD, CAT, APX, and PAL antioxidant enzymes, lipid peroxidation activity and hydrogen peroxide content. Among the treatments, maize plants subjected to chitosan foliar application at a dose of 140 mg L-1 presented similar behavioural responses to plants under favourable irrigation conditions. Such positive responses are related to the high degree of activity of antioxidant enzymes, gas exchange and low levels of lipid peroxidation and hydrogen peroxide. The results support the potential use of CHT to increase tolerance to water stress.
650 $aAntioxidante
650 $aEnzima
650 $aMilho
653 $aAntiperspirante
653 $aEstresse hídrico
653 $aTroca de gás
700 1 $aMAGALHAES, P. C.
700 1 $aKARAM, D.
700 1 $aSILVA, E. M. da
700 1 $aALVARENGA, A. A.
773 $tActa Scientiarum. Agronomy$gv. 42, e42463, 2020.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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