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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
17/10/2019 |
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Data da última atualização: |
19/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIBOLDI, L. B.; GAZIOLA, S. A.; AZEVEDO, R. A.; FREITAS, S. T. de; CASTRO, P. R. de C. e. |
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Afiliação: |
LUCAS BAIOCHI RIBOLDI; SALETE APARECIDA GAZIOLA; RICARDO ANTUNES AZEVEDO; SERGIO TONETTO DE FREITAS, CPATSA; PAULO ROBERTO DE CAMARGO E CASTRO. |
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Título: |
24-Epibrassinolide mechanisms regulating blossom-end rot development in tomato fruit. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Plant Growth Regulation, v. 38, p. 812-823, 2019. |
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DOI: |
10.1007/s00344-018-9892-x |
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Idioma: |
Inglês |
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Conteúdo: |
Blossom-end rot (BER) is a physiological disorder believed to be triggered by low Ca2+ content in the distal fruit tissue. However, many other factors can also determine fruit susceptibility to BER. It is possible that during fruit growth, Ca2+ imbalance can increase membrane leakiness, which may trigger the accumulation of reactive oxygen species, leading to cell death. Brassinosteroids are a class of plant hormones involved in stress defenses, specially increasing the activity of antioxidant enzymes and the accumulation of antioxidant compounds, such as ascorbic acid. The objective of this study was to understand the mechanisms by which 24-epibrassinolide (EBL) reduces fruit susceptibility to BER. Tomato plants ?BRS Montese? were cultivated in a greenhouse and were weekly sprayed with water (control) or EBL (0.01 ?M) after full bloom. Plants and fruits were evaluated at 15 days after pollination (DAP). According to the results, EBL treatment inhibited BER development, increased fruit diameter, length, and fresh weight. EBL-treated fruit showed higher concentrations of soluble Ca2+ and lower concentrations of cell wall-bound Ca2+. EBL-treated fruit also had higher concentrations of ascorbic acid and lower concentrations of hydrogen peroxide, compared to water-treated fruit. EBL treatment increased the activity of the three main antioxidant enzymes known as ascorbate peroxidase, catalase, and superoxide dismutase. According to the results, EBL treatment maintained higher soluble Ca2+ and antioxidant capacity, reducing fruit susceptibility to BER. MenosBlossom-end rot (BER) is a physiological disorder believed to be triggered by low Ca2+ content in the distal fruit tissue. However, many other factors can also determine fruit susceptibility to BER. It is possible that during fruit growth, Ca2+ imbalance can increase membrane leakiness, which may trigger the accumulation of reactive oxygen species, leading to cell death. Brassinosteroids are a class of plant hormones involved in stress defenses, specially increasing the activity of antioxidant enzymes and the accumulation of antioxidant compounds, such as ascorbic acid. The objective of this study was to understand the mechanisms by which 24-epibrassinolide (EBL) reduces fruit susceptibility to BER. Tomato plants ?BRS Montese? were cultivated in a greenhouse and were weekly sprayed with water (control) or EBL (0.01 ?M) after full bloom. Plants and fruits were evaluated at 15 days after pollination (DAP). According to the results, EBL treatment inhibited BER development, increased fruit diameter, length, and fresh weight. EBL-treated fruit showed higher concentrations of soluble Ca2+ and lower concentrations of cell wall-bound Ca2+. EBL-treated fruit also had higher concentrations of ascorbic acid and lower concentrations of hydrogen peroxide, compared to water-treated fruit. EBL treatment increased the activity of the three main antioxidant enzymes known as ascorbate peroxidase, catalase, and superoxide dismutase. According to the results, EBL treatment maintained higher sol... Mostrar Tudo |
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Palavras-Chave: |
24-Epibrassinolide; Blossom-End Rot; Brassinosteróides; BRS Montese; Deficiência de cálcio; Estresse oxidativo; Podridão da extremidade da flor. |
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Thesagro: |
Doença; Tomate. |
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Thesaurus Nal: |
Tomatoes. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/202988/1/Epibrassinolide-Mechanisms-Regulating-Blossom-2019.pdf
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Marc: |
LEADER 02472naa a2200301 a 4500
001 2113189
005 2019-11-19
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1007/s00344-018-9892-x$2DOI
100 1 $aRIBOLDI, L. B.
245 $a24-Epibrassinolide mechanisms regulating blossom-end rot development in tomato fruit.$h[electronic resource]
260 $c2019
520 $aBlossom-end rot (BER) is a physiological disorder believed to be triggered by low Ca2+ content in the distal fruit tissue. However, many other factors can also determine fruit susceptibility to BER. It is possible that during fruit growth, Ca2+ imbalance can increase membrane leakiness, which may trigger the accumulation of reactive oxygen species, leading to cell death. Brassinosteroids are a class of plant hormones involved in stress defenses, specially increasing the activity of antioxidant enzymes and the accumulation of antioxidant compounds, such as ascorbic acid. The objective of this study was to understand the mechanisms by which 24-epibrassinolide (EBL) reduces fruit susceptibility to BER. Tomato plants ?BRS Montese? were cultivated in a greenhouse and were weekly sprayed with water (control) or EBL (0.01 ?M) after full bloom. Plants and fruits were evaluated at 15 days after pollination (DAP). According to the results, EBL treatment inhibited BER development, increased fruit diameter, length, and fresh weight. EBL-treated fruit showed higher concentrations of soluble Ca2+ and lower concentrations of cell wall-bound Ca2+. EBL-treated fruit also had higher concentrations of ascorbic acid and lower concentrations of hydrogen peroxide, compared to water-treated fruit. EBL treatment increased the activity of the three main antioxidant enzymes known as ascorbate peroxidase, catalase, and superoxide dismutase. According to the results, EBL treatment maintained higher soluble Ca2+ and antioxidant capacity, reducing fruit susceptibility to BER.
650 $aTomatoes
650 $aDoença
650 $aTomate
653 $a24-Epibrassinolide
653 $aBlossom-End Rot
653 $aBrassinosteróides
653 $aBRS Montese
653 $aDeficiência de cálcio
653 $aEstresse oxidativo
653 $aPodridão da extremidade da flor
700 1 $aGAZIOLA, S. A.
700 1 $aAZEVEDO, R. A.
700 1 $aFREITAS, S. T. de
700 1 $aCASTRO, P. R. de C. e
773 $tJournal of Plant Growth Regulation$gv. 38, p. 812-823, 2019.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
13/03/2023 |
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Data da última atualização: |
26/01/2024 |
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Autoria: |
VALLE, R. C. A. do; SILVA, M. A. da; ALVARENGA, E. R. de; MATTA, S. V. da; TURRA, E. M. |
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Afiliação: |
RAFAEL CAVACA ALVES DO VALLE, UNIVERSIDADE FEDERAL DE MINAS GERAIS; MARCOS ANTÔNIO DA SILVA, UNIVERSIDADE FEDERAL DE MINAS GERAIS; ÉRIKA RAMOS DE ALVARENGA, UNIVERSIDADE FEDERAL DE MINAS GERAIS; SYLVIA VELOSO DA MATTA, UNIVERSIDADE FEDERAL DE MINAS GERAIS; EDUARDO MALDONADO TURRA, UNIVERSIDADE FEDERAL DE MINAS GERAIS. |
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Título: |
Water salinity during masculinization of Nile tilapia in biofloc system. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v. 58, e03008, 2023. |
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DOI: |
https://doi.org/10.1590/S1678-3921.pab2023.v58.03008 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Salinidade da água durante a masculinização de tilápia-do-nilo em sistema de bioflocos. |
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Conteúdo: |
ABSTRACT - The objective of this work was to evaluate the effect of different water salinity levels on the growth performance, survival, and masculinization rate of Nile tilapia (Oreochromis niloticus) larvae in a biofloc technology (BFT) system. Seven salinity levels (0, 2, 4, 6, 8, 10, and 12 g L-¹) were tested during four weeks in the masculinization period after the absorption of the yolk sac in a matured biofloc system. The water quality variables were within the recommended range for Nile tilapia farming. However, the nitrite peaks were higher at higher salinity levels and were associated with the lower survival of fish at salinity levels equal to or higher than 6 g L-¹. There was no difference between treatments for average final body weight and masculinization rate. Final biomass and survival decreased, and the feed offered as a proportion of final biomass showed the worst results because of the increase in salinity. Therefore, since higher masculinization rates are not obtained at slight and moderate levels of saline water, salinity should be kept close to 0 g L-¹ for the masculinization protocol of Nile tilapia in a BFT, for a better survival and higher biomass of the fish, as well as a lower waste of the offered feed. RESUMO - O objetivo deste trabalho foi avaliar o efeito de diferentes níveis de salinidade da água sobre o desempenho de crescimento, a sobrevivência e a taxa de masculinização de larvas de tilápia-do-nilo (Oreochromis niloticus) em sistema de tecnologia de bioflocos (BFT). Sete níveis de salinidade (0, 2, 4, 6, 8, 10 e 12 g L-¹) foram testados durante quatro semanas no período de masculinização após a absorção do saco vitelino, em sistema de bioflocos maturados. As variáveis de qualidade da água estiveram dentro dos intervalos recomendados para a produção de tilápia-do-nilo. Entretanto, os picos de nitrito foram mais altos nos tratamentos com maiores níveis de salinidade e foram associados à menor sobrevivência dos peixes em salinidade igual ou superior a 6 g L-¹. Não houve diferença entre os tratamentos quanto ao peso médio final e à taxa de masculinização. A biomassa final e a sobrevivência diminuíram, e o alimento oferecido como proporção da biomassa final apresentou os piores resultados em razão do aumento da salinidade. Portanto, uma vez que não são obtidas taxas de masculinização maiores em água leve ou moderadamente salinizada, a salinidade deve ser mantida próxima de 0 g L-¹ para o protocolo de masculinização de larvas de tilápia-do-nilo em BFT, para melhor sobrevivência e maior biomassa dos peixes, assim como menor desperdício do alimento oferecido. MenosABSTRACT - The objective of this work was to evaluate the effect of different water salinity levels on the growth performance, survival, and masculinization rate of Nile tilapia (Oreochromis niloticus) larvae in a biofloc technology (BFT) system. Seven salinity levels (0, 2, 4, 6, 8, 10, and 12 g L-¹) were tested during four weeks in the masculinization period after the absorption of the yolk sac in a matured biofloc system. The water quality variables were within the recommended range for Nile tilapia farming. However, the nitrite peaks were higher at higher salinity levels and were associated with the lower survival of fish at salinity levels equal to or higher than 6 g L-¹. There was no difference between treatments for average final body weight and masculinization rate. Final biomass and survival decreased, and the feed offered as a proportion of final biomass showed the worst results because of the increase in salinity. Therefore, since higher masculinization rates are not obtained at slight and moderate levels of saline water, salinity should be kept close to 0 g L-¹ for the masculinization protocol of Nile tilapia in a BFT, for a better survival and higher biomass of the fish, as well as a lower waste of the offered feed. RESUMO - O objetivo deste trabalho foi avaliar o efeito de diferentes níveis de salinidade da água sobre o desempenho de crescimento, a sobrevivência e a taxa de masculinização de larvas de tilápia-do-nilo (Oreochromis niloticus) em sistema de tecnol... Mostrar Tudo |
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Palavras-Chave: |
Bioflocos. |
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Thesagro: |
Cloreto de Sódio; Oreochromis Niloticus; Salinidade; Tilápia Nilótica. |
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Thesaurus NAL: |
Sodium chloride; Water salinity. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1152286/1/Water-salinity-during-2023.pdf
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Marc: |
LEADER 03615naa a2200277 a 4500
001 2152286
005 2024-01-26
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S1678-3921.pab2023.v58.03008$2DOI
100 1 $aVALLE, R. C. A. do
245 $aWater salinity during masculinization of Nile tilapia in biofloc system.$h[electronic resource]
260 $c2023
500 $aTítulo em português: Salinidade da água durante a masculinização de tilápia-do-nilo em sistema de bioflocos.
520 $aABSTRACT - The objective of this work was to evaluate the effect of different water salinity levels on the growth performance, survival, and masculinization rate of Nile tilapia (Oreochromis niloticus) larvae in a biofloc technology (BFT) system. Seven salinity levels (0, 2, 4, 6, 8, 10, and 12 g L-¹) were tested during four weeks in the masculinization period after the absorption of the yolk sac in a matured biofloc system. The water quality variables were within the recommended range for Nile tilapia farming. However, the nitrite peaks were higher at higher salinity levels and were associated with the lower survival of fish at salinity levels equal to or higher than 6 g L-¹. There was no difference between treatments for average final body weight and masculinization rate. Final biomass and survival decreased, and the feed offered as a proportion of final biomass showed the worst results because of the increase in salinity. Therefore, since higher masculinization rates are not obtained at slight and moderate levels of saline water, salinity should be kept close to 0 g L-¹ for the masculinization protocol of Nile tilapia in a BFT, for a better survival and higher biomass of the fish, as well as a lower waste of the offered feed. RESUMO - O objetivo deste trabalho foi avaliar o efeito de diferentes níveis de salinidade da água sobre o desempenho de crescimento, a sobrevivência e a taxa de masculinização de larvas de tilápia-do-nilo (Oreochromis niloticus) em sistema de tecnologia de bioflocos (BFT). Sete níveis de salinidade (0, 2, 4, 6, 8, 10 e 12 g L-¹) foram testados durante quatro semanas no período de masculinização após a absorção do saco vitelino, em sistema de bioflocos maturados. As variáveis de qualidade da água estiveram dentro dos intervalos recomendados para a produção de tilápia-do-nilo. Entretanto, os picos de nitrito foram mais altos nos tratamentos com maiores níveis de salinidade e foram associados à menor sobrevivência dos peixes em salinidade igual ou superior a 6 g L-¹. Não houve diferença entre os tratamentos quanto ao peso médio final e à taxa de masculinização. A biomassa final e a sobrevivência diminuíram, e o alimento oferecido como proporção da biomassa final apresentou os piores resultados em razão do aumento da salinidade. Portanto, uma vez que não são obtidas taxas de masculinização maiores em água leve ou moderadamente salinizada, a salinidade deve ser mantida próxima de 0 g L-¹ para o protocolo de masculinização de larvas de tilápia-do-nilo em BFT, para melhor sobrevivência e maior biomassa dos peixes, assim como menor desperdício do alimento oferecido.
650 $aSodium chloride
650 $aWater salinity
650 $aCloreto de Sódio
650 $aOreochromis Niloticus
650 $aSalinidade
650 $aTilápia Nilótica
653 $aBioflocos
700 1 $aSILVA, M. A. da
700 1 $aALVARENGA, E. R. de
700 1 $aMATTA, S. V. da
700 1 $aTURRA, E. M.
773 $tPesquisa Agropecuária Brasileira$gv. 58, e03008, 2023.
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