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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
09/08/2006 |
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Data da última atualização: |
03/12/2015 |
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Autoria: |
FERRER, J. L. R.; MAGALHAES, P. C.; ALVES, J. D.; VASCONCELLOS, C. A.; DELU FILHO, N.; FRIES, D. D.; MAGALHAES, M. M.; PURCINO, A. A. C. |
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Afiliação: |
PAULO CESAR MAGALHAES, CNPMS; ANTONIO ALVARO CORSETTI PURCINO, CNPMS. |
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Título: |
Calcium partially relieves the deleterius effects of hypoxia on a maize cultivar selected for waterlogging tolerance. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Revista Brasileira de Milho e Sorgo, Sete Lagoas, v. 4, n. 3, p. 381-389, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Low soil oxygen concentrations due to waterlogging or transient flooding severely reduce maize production. However, genotypes with tolerance or even resistance to hypoxia develop morphological and biochemical adaptation mechanisms which may prove to be useful criteria for the selection and breeding of new improved genotypes. The objective of this work was to evaluate the effect of levels and modes of application of calcium sources on biomass yield, the contents of total soluble sugars and reduced sugars and on the activities of invertase isoforms and phosphoenolpyruvate carboxylase, in a maize variety (BRS 4154) derived from the 14th selection cycle for tolerance to transient soil flooding conditions, when cultivated under waterlogging conditions. The study was carried out in a greenhouse, utilizing 20 kg pots, filled with a lowland soil. The effects of two sources of calcium (CaCl2, 300 kg ha-1 and CaSO4, 500 and 1.500 kg ha-1) and three modes of application (applied 8 cm below surface, mixed with the whole soil volume and surface application) were tested in soils kept at field capacity and waterlogged after plants reached growth stage V6. Above ground biomass yield, the contents of total soluble sugars and reducing sugars and the activities of the neutral citosol (INC), acid vacuolar (IAV), acid cell wall invertases and phosphoenolpyruvate carboxylase were determined at the onset of flowering. Calcium application partially relieved the deleterious effect of waterlogging on biomass yield and the activities of INC, IAPC and PEPcase. MenosLow soil oxygen concentrations due to waterlogging or transient flooding severely reduce maize production. However, genotypes with tolerance or even resistance to hypoxia develop morphological and biochemical adaptation mechanisms which may prove to be useful criteria for the selection and breeding of new improved genotypes. The objective of this work was to evaluate the effect of levels and modes of application of calcium sources on biomass yield, the contents of total soluble sugars and reduced sugars and on the activities of invertase isoforms and phosphoenolpyruvate carboxylase, in a maize variety (BRS 4154) derived from the 14th selection cycle for tolerance to transient soil flooding conditions, when cultivated under waterlogging conditions. The study was carried out in a greenhouse, utilizing 20 kg pots, filled with a lowland soil. The effects of two sources of calcium (CaCl2, 300 kg ha-1 and CaSO4, 500 and 1.500 kg ha-1) and three modes of application (applied 8 cm below surface, mixed with the whole soil volume and surface application) were tested in soils kept at field capacity and waterlogged after plants reached growth stage V6. Above ground biomass yield, the contents of total soluble sugars and reducing sugars and the activities of the neutral citosol (INC), acid vacuolar (IAV), acid cell wall invertases and phosphoenolpyruvate carboxylase were determined at the onset of flowering. Calcium application partially relieved the deleterious effect of waterlogging on... Mostrar Tudo |
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Palavras-Chave: |
BRS 4154; PEPcase; transient waterlogging. |
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Thesagro: |
Invertase. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30467/1/Calcium-partially.pdf
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Marc: |
LEADER 02343naa a2200253 a 4500
001 1489518
005 2015-12-03
008 2005 bl uuuu u00u1 u #d
100 1 $aFERRER, J. L. R.
245 $aCalcium partially relieves the deleterius effects of hypoxia on a maize cultivar selected for waterlogging tolerance.$h[electronic resource]
260 $c2005
520 $aLow soil oxygen concentrations due to waterlogging or transient flooding severely reduce maize production. However, genotypes with tolerance or even resistance to hypoxia develop morphological and biochemical adaptation mechanisms which may prove to be useful criteria for the selection and breeding of new improved genotypes. The objective of this work was to evaluate the effect of levels and modes of application of calcium sources on biomass yield, the contents of total soluble sugars and reduced sugars and on the activities of invertase isoforms and phosphoenolpyruvate carboxylase, in a maize variety (BRS 4154) derived from the 14th selection cycle for tolerance to transient soil flooding conditions, when cultivated under waterlogging conditions. The study was carried out in a greenhouse, utilizing 20 kg pots, filled with a lowland soil. The effects of two sources of calcium (CaCl2, 300 kg ha-1 and CaSO4, 500 and 1.500 kg ha-1) and three modes of application (applied 8 cm below surface, mixed with the whole soil volume and surface application) were tested in soils kept at field capacity and waterlogged after plants reached growth stage V6. Above ground biomass yield, the contents of total soluble sugars and reducing sugars and the activities of the neutral citosol (INC), acid vacuolar (IAV), acid cell wall invertases and phosphoenolpyruvate carboxylase were determined at the onset of flowering. Calcium application partially relieved the deleterious effect of waterlogging on biomass yield and the activities of INC, IAPC and PEPcase.
650 $aInvertase
653 $aBRS 4154
653 $aPEPcase
653 $atransient waterlogging
700 1 $aMAGALHAES, P. C.
700 1 $aALVES, J. D.
700 1 $aVASCONCELLOS, C. A.
700 1 $aDELU FILHO, N.
700 1 $aFRIES, D. D.
700 1 $aMAGALHAES, M. M.
700 1 $aPURCINO, A. A. C.
773 $tRevista Brasileira de Milho e Sorgo, Sete Lagoas$gv. 4, n. 3, p. 381-389, 2005.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
26/11/2019 |
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Data da última atualização: |
26/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
JONSSON, C. M.; MOURA, M. A. M. de; FERRACINI, V. L.; PARAIBA, L. C.; ASSALIN, M. R.; QUEIROZ, S. C. do N. de. |
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Afiliação: |
CLAUDIO MARTIN JONSSON, CNPMA; MONICA ACAUI MARCONDES DE MOURA, IB Campinas; VERA LUCIA FERRACINI, CNPMA; LOURIVAL COSTA PARAIBA, CNPMA; MARCIA REGINA ASSALIN, CNPMA; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA. |
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Título: |
Bioconcentrations of herbicides used in sugarcane crops in tilapia (Oreochromis niloticus) and the risk for human consumption. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Heliyon, v. 5, n. 8, 2019. Article e02237. |
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ISSN: |
2405-8440 |
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DOI: |
https://doi.org/10.1016/j.heliyon.2019.e02237 |
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Idioma: |
Inglês |
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Conteúdo: |
The practice of intensive herbicide use in the sugarcane industry has a high risk of compromising the quality of the water and the organisms that live there due to losses through runoff, leaching and other processes. In this work, the dynamics of four herbicides present in three different mixtures were evaluated through their incor- poration and elimination in the muscle tissue of tilapia (Oreochromis niloticus). The highest mean values of bio- concentration factors were 1.730 for ametryn, 0.891 for tebuthiuron, 0.322 for hexazinone and 4.783 for diuron. Diuron presented the highest risk regarding the consumption of tilapia fillets by the population. However, considering that the fish would reach maximum levels of diuron when exposed to extremely high concentrations, an individual weighing 70 kg would need to ingest approximately 1.5 kg of this food product to surpass the acceptable daily intake of 0.007 mg kg 1 body weight. It was concluded that the risk of injury to the population consuming tilapia fillets from fish exposed to herbicides in water arising from sugarcane activities is very low. According to the risk estimation performed in this work, which is substantiated by the assumptions of the World Health Organization and the International Life Sciences Institute, there is a low risk of injury to the population consuming tilapia fillets from fish exposed to water containing herbicides in concentrations arising from sugarcane activities. However, as the risk was estimated from laboratory conditions, caution should be taken where herbicide applications are carried out with high frequency near water bodies, as the consumption of fish from these areas is quite common. MenosThe practice of intensive herbicide use in the sugarcane industry has a high risk of compromising the quality of the water and the organisms that live there due to losses through runoff, leaching and other processes. In this work, the dynamics of four herbicides present in three different mixtures were evaluated through their incor- poration and elimination in the muscle tissue of tilapia (Oreochromis niloticus). The highest mean values of bio- concentration factors were 1.730 for ametryn, 0.891 for tebuthiuron, 0.322 for hexazinone and 4.783 for diuron. Diuron presented the highest risk regarding the consumption of tilapia fillets by the population. However, considering that the fish would reach maximum levels of diuron when exposed to extremely high concentrations, an individual weighing 70 kg would need to ingest approximately 1.5 kg of this food product to surpass the acceptable daily intake of 0.007 mg kg 1 body weight. It was concluded that the risk of injury to the population consuming tilapia fillets from fish exposed to herbicides in water arising from sugarcane activities is very low. According to the risk estimation performed in this work, which is substantiated by the assumptions of the World Health Organization and the International Life Sciences Institute, there is a low risk of injury to the population consuming tilapia fillets from fish exposed to water containing herbicides in concentrations arising from sugarcane activities. However, as the risk was estimat... Mostrar Tudo |
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Thesagro: |
Herbicida; Poluição da Água; Tilápia; Toxicologia de Alimento. |
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Thesaurus NAL: |
Acceptable daily intake; Chemical hazards; Chemical risk assessment; Ecotoxicology; Food safety; Herbicide residues; Oreochromis; Water pollution. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/205533/1/Jonsson-Bioconcentrations-Herbicides-2019.pdf
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Marc: |
LEADER 02771naa a2200349 a 4500
001 2115211
005 2019-11-26
008 2019 bl uuuu u00u1 u #d
022 $a2405-8440
024 7 $ahttps://doi.org/10.1016/j.heliyon.2019.e02237$2DOI
100 1 $aJONSSON, C. M.
245 $aBioconcentrations of herbicides used in sugarcane crops in tilapia (Oreochromis niloticus) and the risk for human consumption.$h[electronic resource]
260 $c2019
520 $aThe practice of intensive herbicide use in the sugarcane industry has a high risk of compromising the quality of the water and the organisms that live there due to losses through runoff, leaching and other processes. In this work, the dynamics of four herbicides present in three different mixtures were evaluated through their incor- poration and elimination in the muscle tissue of tilapia (Oreochromis niloticus). The highest mean values of bio- concentration factors were 1.730 for ametryn, 0.891 for tebuthiuron, 0.322 for hexazinone and 4.783 for diuron. Diuron presented the highest risk regarding the consumption of tilapia fillets by the population. However, considering that the fish would reach maximum levels of diuron when exposed to extremely high concentrations, an individual weighing 70 kg would need to ingest approximately 1.5 kg of this food product to surpass the acceptable daily intake of 0.007 mg kg 1 body weight. It was concluded that the risk of injury to the population consuming tilapia fillets from fish exposed to herbicides in water arising from sugarcane activities is very low. According to the risk estimation performed in this work, which is substantiated by the assumptions of the World Health Organization and the International Life Sciences Institute, there is a low risk of injury to the population consuming tilapia fillets from fish exposed to water containing herbicides in concentrations arising from sugarcane activities. However, as the risk was estimated from laboratory conditions, caution should be taken where herbicide applications are carried out with high frequency near water bodies, as the consumption of fish from these areas is quite common.
650 $aAcceptable daily intake
650 $aChemical hazards
650 $aChemical risk assessment
650 $aEcotoxicology
650 $aFood safety
650 $aHerbicide residues
650 $aOreochromis
650 $aWater pollution
650 $aHerbicida
650 $aPoluição da Água
650 $aTilápia
650 $aToxicologia de Alimento
700 1 $aMOURA, M. A. M. de
700 1 $aFERRACINI, V. L.
700 1 $aPARAIBA, L. C.
700 1 $aASSALIN, M. R.
700 1 $aQUEIROZ, S. C. do N. de
773 $tHeliyon$gv. 5, n. 8, 2019. Article e02237.
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