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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
26/01/2023 |
Data da última atualização: |
20/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ÁVILA, R. G.; MAGALHAES, P. C.; VITORINO, L. C.; BESSA, L. A.; SOUZA, K. R. D. de; QUEIROZ, R. B.; JAKELAITIS, A.; TEIXEIRA, M. B. |
Afiliação: |
RONIEL GERALDO ÁVILA, Corporação Agro Simples; PAULO CESAR MAGALHAES, CNPMS; LUCIANA CRISTINA VITORINO, Instituto Federal Goiano; LAYARA ALEXANDRE BESSA, Instituto Federal Goiano; KAMILA REZENDE DÁZIO DE SOUZA, Universidade Federal de Alfenas; RAPHAEL BARROS QUEIROZ, Instituto Federal Goiano; ADRIANO JAKELAITIS, Instituto Federal Goiano; MARCONI BATISTA TEIXEIRA, Instituto Federal Goiano. |
Título: |
Chitosan induces sorghum tolerance to water deficits by positively regulating photosynthesis and the production of primary metabolites, osmoregulators, and antioxidants. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Journal of Soil Science and Plant Nutrition, v. 23, p. 1156–1172, 2023. |
DOI: |
https://doi.org/10.1007/s42729-022-01111-4 |
Idioma: |
Inglês |
Conteúdo: |
Current climate change scenarios require strategies that mitigate the efects of water defcits. Given that chitosan stimulates induced resistance responses, we tested the hypothesis that foliar application of this polysaccharide can have positive efects on the primary metabolite, antioxidant, and osmoregulatory metabolisms of sorghum, mitigating the efects of water defcit on grain yield. Sorghum plants were cultivated under either irrigated or water-defcit conditions and were either treated or untreated with chitosan, and we assessed the following responses: water potential, gas exchange, nutritional status, biosynthesis of primary and osmoregulatory metabolites, the activity of the antioxidant system constituents, and hydrogen peroxide and malondialdehyde contents. An active methodology was used to impose water stress on plants grown in pots with 20 kg of soil, 06 replications per treatment. Sorghum plants subjected to water defcit that were treated with chitosan exhibited higher stomatal conductance and transpiration than the untreated plants. Water restriction reduced the nutrient contents of leaves, but in the irrigated plants, chitosan treatment increased the tissue contents of certain nutrients and leaf concentrations of total proteins and total amino acids. In the plants under water-defcit conditions that were treated with chitosan, an elevated photosynthetic rate contributed to an increase in carbohydrate accumulation and a higher production of panicle and grain dry biomass compared with the untreated plants. The activity of catalase and ascorbate peroxidase also increased in response to chitosan. Overall, chitosan was efective in enhancing the water defcit tolerance of sorghum plants cultivated under water-defcit conditions by 57%. With this work, we generate perspectives for studies focusing on the development of water-defcit-resistant sorghum lineages, by means of chitosan elicitation. MenosCurrent climate change scenarios require strategies that mitigate the efects of water defcits. Given that chitosan stimulates induced resistance responses, we tested the hypothesis that foliar application of this polysaccharide can have positive efects on the primary metabolite, antioxidant, and osmoregulatory metabolisms of sorghum, mitigating the efects of water defcit on grain yield. Sorghum plants were cultivated under either irrigated or water-defcit conditions and were either treated or untreated with chitosan, and we assessed the following responses: water potential, gas exchange, nutritional status, biosynthesis of primary and osmoregulatory metabolites, the activity of the antioxidant system constituents, and hydrogen peroxide and malondialdehyde contents. An active methodology was used to impose water stress on plants grown in pots with 20 kg of soil, 06 replications per treatment. Sorghum plants subjected to water defcit that were treated with chitosan exhibited higher stomatal conductance and transpiration than the untreated plants. Water restriction reduced the nutrient contents of leaves, but in the irrigated plants, chitosan treatment increased the tissue contents of certain nutrients and leaf concentrations of total proteins and total amino acids. In the plants under water-defcit conditions that were treated with chitosan, an elevated photosynthetic rate contributed to an increase in carbohydrate accumulation and a higher production of panicle and grain dry b... Mostrar Tudo |
Palavras-Chave: |
Desempenho fotossintético; Estresse hídrico; Osmorregulação; Quitosana. |
Thesagro: |
Antioxidante; Enzima; Fotossíntese; Sorgo Granífero. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1151232/1/Chitosan-induces-sorghum-tolerance.pdf
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Marc: |
LEADER 02955naa a2200313 a 4500 001 2151232 005 2024-02-20 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s42729-022-01111-4$2DOI 100 1 $aÁVILA, R. G. 245 $aChitosan induces sorghum tolerance to water deficits by positively regulating photosynthesis and the production of primary metabolites, osmoregulators, and antioxidants.$h[electronic resource] 260 $c2023 520 $aCurrent climate change scenarios require strategies that mitigate the efects of water defcits. Given that chitosan stimulates induced resistance responses, we tested the hypothesis that foliar application of this polysaccharide can have positive efects on the primary metabolite, antioxidant, and osmoregulatory metabolisms of sorghum, mitigating the efects of water defcit on grain yield. Sorghum plants were cultivated under either irrigated or water-defcit conditions and were either treated or untreated with chitosan, and we assessed the following responses: water potential, gas exchange, nutritional status, biosynthesis of primary and osmoregulatory metabolites, the activity of the antioxidant system constituents, and hydrogen peroxide and malondialdehyde contents. An active methodology was used to impose water stress on plants grown in pots with 20 kg of soil, 06 replications per treatment. Sorghum plants subjected to water defcit that were treated with chitosan exhibited higher stomatal conductance and transpiration than the untreated plants. Water restriction reduced the nutrient contents of leaves, but in the irrigated plants, chitosan treatment increased the tissue contents of certain nutrients and leaf concentrations of total proteins and total amino acids. In the plants under water-defcit conditions that were treated with chitosan, an elevated photosynthetic rate contributed to an increase in carbohydrate accumulation and a higher production of panicle and grain dry biomass compared with the untreated plants. The activity of catalase and ascorbate peroxidase also increased in response to chitosan. Overall, chitosan was efective in enhancing the water defcit tolerance of sorghum plants cultivated under water-defcit conditions by 57%. With this work, we generate perspectives for studies focusing on the development of water-defcit-resistant sorghum lineages, by means of chitosan elicitation. 650 $aAntioxidante 650 $aEnzima 650 $aFotossíntese 650 $aSorgo Granífero 653 $aDesempenho fotossintético 653 $aEstresse hídrico 653 $aOsmorregulação 653 $aQuitosana 700 1 $aMAGALHAES, P. C. 700 1 $aVITORINO, L. C. 700 1 $aBESSA, L. A. 700 1 $aSOUZA, K. R. D. de 700 1 $aQUEIROZ, R. B. 700 1 $aJAKELAITIS, A. 700 1 $aTEIXEIRA, M. B. 773 $tJournal of Soil Science and Plant Nutrition$gv. 23, p. 1156–1172, 2023.
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Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
31/05/2000 |
Data da última atualização: |
16/08/2013 |
Autoria: |
ARAUJO, J. M. de; OLIVEIRA, J. M. C. de; CARTAXO, W. V.; VALE, D. G.; SILVA, M. B. de. |
Afiliação: |
Embrapa Algodao. |
Título: |
Vamos plantar gergelim. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Campina Grande: EMBRAPA-CNPA: SEBRAE-PB, 1999. |
Páginas: |
17p. |
Idioma: |
Português |
Conteúdo: |
Introducao; Condicoes de clima e solo; Escolha da semente; Preparo do solo; Epoca de plantio; Plante certo; Espacamento; Raleamento ou desbaste; Limpas; Controle de pragas; Colheita, secagem e armazenamento; Comercializacao; |
Palavras-Chave: |
Brasil; Cultivation; Cultivo; Gergelim-cultivo; Paraiba; Sesame. |
Thesagro: |
Gergelim; Sesamum Indicum. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00862nam a2200265 a 4500 001 1271408 005 2013-08-16 008 1999 bl uuuu u0uu1 u #d 100 1 $aARAUJO, J. M. de 245 $aVamos plantar gergelim. 260 $aCampina Grande: EMBRAPA-CNPA: SEBRAE-PB$c1999 300 $a17p. 520 $aIntroducao; Condicoes de clima e solo; Escolha da semente; Preparo do solo; Epoca de plantio; Plante certo; Espacamento; Raleamento ou desbaste; Limpas; Controle de pragas; Colheita, secagem e armazenamento; Comercializacao; 650 $aGergelim 650 $aSesamum Indicum 653 $aBrasil 653 $aCultivation 653 $aCultivo 653 $aGergelim-cultivo 653 $aParaiba 653 $aSesame 700 1 $aOLIVEIRA, J. M. C. de 700 1 $aCARTAXO, W. V. 700 1 $aVALE, D. G. 700 1 $aSILVA, M. B. de
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