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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
14/04/2020 |
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Data da última atualização: |
20/04/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CHAVES-SILVA, S.; HORTA, L. P.; SOUZA, L. T.; SILVA, C. M. da; DOHANIK, C. S.; GOULART, G. A. C.; MARRIEL, I. E.; FÁTIMA, A. de. |
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Afiliação: |
Samuel Chaves-Silva, Universidade Federal de Minas Gerais; Lívia P. Horta, Universidade Federal de Minas Gerais; Leandro T. Souza, Universidade Federal de Minas Gerais; Cleiton M. da Silva, Universidade Federal de Minas Gerais; Caroline S. Dohanik, Universidade Federal de Minas Gerais; Gisele A. C. Goulart, Universidade Federal de Minas Gerais; IVANILDO EVODIO MARRIEL, CNPMS; Ângelo de Fátima, Universidade Federal de Minas Gerais. |
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Título: |
Do schiff bases-based urease inhibitors improve plant growth and affect the activity of soil arginase? |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Industrial Crops & Products, v. 145, article 111995, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
The increase in nitrogen (N) use efficiency in acidic soils is necessary to boost the tropical agriculture yields and mitigate N losses and the supplementation of urea-based fertilizers with urease inhibitors has been used as a strategy to overcome such problems. Here, 12 Schiff bases were synthesized to investigate the extent of their ability to inhibit ureases and some effects on plant development and soil microbiota metabolism. The performance of compounds 4, 5 and 7 on ureases present in an agricultural clayey dystrophic Red Latosol was greater than that of N-(butyl) thiophosphoric triamide (NBPT), an inhibitor reference. Compound 5 was the most potent on soil ureases; Its concentration necessary to inhibit the soil ureases by 50 % (IC50) was 27.5 ?M, while the IC50 values for 4 and 7 were respectively 129 and 233.9 ?M. Phytotoxicity assays showed that 4, 5 or 7 are not harmful to Lactuca sativa L. (lettuce; dicot) or Pennisetum glaucum (L.) R. Br. (pearl millet; monot) and 4 and 5 (both at 100 ?M) even improved the elongation of lettuce roots. Further tests performed on the pearl milletclayey dystrophic Red Latosol system revealed that urea coated with 5 (1.0 % w/w) was as efficient as NBPTcoated urea (0.25 or 0.5 % w/w), yielding 37.5 % (on average) more N in millet shoots in comparison to plants cultivated in the presence of urea only. Strikingly, the Schiff base 5 did not impair the activity of soil arginases from day 2 to day 7 after soil supplementation with urea plus compound 5. The inhibitory effect of Schiff base 5 and NBPT on soil ureases was transient since the soil urease activity in samples exposed to urea plus 5 or NBPT was similar to that of urea-treated soils from day 2 and so on. Overall, the Schiff base 5 (and 4 and 7 as well) are promising additive candidates for further studies toward the development of new urea-based fertilizer formulations. MenosThe increase in nitrogen (N) use efficiency in acidic soils is necessary to boost the tropical agriculture yields and mitigate N losses and the supplementation of urea-based fertilizers with urease inhibitors has been used as a strategy to overcome such problems. Here, 12 Schiff bases were synthesized to investigate the extent of their ability to inhibit ureases and some effects on plant development and soil microbiota metabolism. The performance of compounds 4, 5 and 7 on ureases present in an agricultural clayey dystrophic Red Latosol was greater than that of N-(butyl) thiophosphoric triamide (NBPT), an inhibitor reference. Compound 5 was the most potent on soil ureases; Its concentration necessary to inhibit the soil ureases by 50 % (IC50) was 27.5 ?M, while the IC50 values for 4 and 7 were respectively 129 and 233.9 ?M. Phytotoxicity assays showed that 4, 5 or 7 are not harmful to Lactuca sativa L. (lettuce; dicot) or Pennisetum glaucum (L.) R. Br. (pearl millet; monot) and 4 and 5 (both at 100 ?M) even improved the elongation of lettuce roots. Further tests performed on the pearl milletclayey dystrophic Red Latosol system revealed that urea coated with 5 (1.0 % w/w) was as efficient as NBPTcoated urea (0.25 or 0.5 % w/w), yielding 37.5 % (on average) more N in millet shoots in comparison to plants cultivated in the presence of urea only. Strikingly, the Schiff base 5 did not impair the activity of soil arginases from day 2 to day 7 after soil supplementation with urea p... Mostrar Tudo |
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Palavras-Chave: |
Microbiota do solo. |
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Thesagro: |
Adubo; Fertilizante Nitrogenado; Fitotoxicidade; Nitrogênio; Uréase. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 02706naa a2200277 a 4500
001 2121630
005 2020-04-20
008 2020 bl uuuu u00u1 u #d
100 1 $aCHAVES-SILVA, S.
245 $aDo schiff bases-based urease inhibitors improve plant growth and affect the activity of soil arginase?$h[electronic resource]
260 $c2020
520 $aThe increase in nitrogen (N) use efficiency in acidic soils is necessary to boost the tropical agriculture yields and mitigate N losses and the supplementation of urea-based fertilizers with urease inhibitors has been used as a strategy to overcome such problems. Here, 12 Schiff bases were synthesized to investigate the extent of their ability to inhibit ureases and some effects on plant development and soil microbiota metabolism. The performance of compounds 4, 5 and 7 on ureases present in an agricultural clayey dystrophic Red Latosol was greater than that of N-(butyl) thiophosphoric triamide (NBPT), an inhibitor reference. Compound 5 was the most potent on soil ureases; Its concentration necessary to inhibit the soil ureases by 50 % (IC50) was 27.5 ?M, while the IC50 values for 4 and 7 were respectively 129 and 233.9 ?M. Phytotoxicity assays showed that 4, 5 or 7 are not harmful to Lactuca sativa L. (lettuce; dicot) or Pennisetum glaucum (L.) R. Br. (pearl millet; monot) and 4 and 5 (both at 100 ?M) even improved the elongation of lettuce roots. Further tests performed on the pearl milletclayey dystrophic Red Latosol system revealed that urea coated with 5 (1.0 % w/w) was as efficient as NBPTcoated urea (0.25 or 0.5 % w/w), yielding 37.5 % (on average) more N in millet shoots in comparison to plants cultivated in the presence of urea only. Strikingly, the Schiff base 5 did not impair the activity of soil arginases from day 2 to day 7 after soil supplementation with urea plus compound 5. The inhibitory effect of Schiff base 5 and NBPT on soil ureases was transient since the soil urease activity in samples exposed to urea plus 5 or NBPT was similar to that of urea-treated soils from day 2 and so on. Overall, the Schiff base 5 (and 4 and 7 as well) are promising additive candidates for further studies toward the development of new urea-based fertilizer formulations.
650 $aAdubo
650 $aFertilizante Nitrogenado
650 $aFitotoxicidade
650 $aNitrogênio
650 $aUréase
653 $aMicrobiota do solo
700 1 $aHORTA, L. P.
700 1 $aSOUZA, L. T.
700 1 $aSILVA, C. M. da
700 1 $aDOHANIK, C. S.
700 1 $aGOULART, G. A. C.
700 1 $aMARRIEL, I. E.
700 1 $aFÁTIMA, A. de
773 $tIndustrial Crops & Products$gv. 145, article 111995, 2020.
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Embrapa Milho e Sorgo (CNPMS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
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Data corrente: |
16/08/2021 |
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Data da última atualização: |
25/08/2021 |
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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: |
DIAMANTINO, G. M. L.; PIEREZAN, F.; FERREIRA, M. I. C.; ROCHA, W. S. D. da; OLIVEIRA, V. M. de; MARTINS, C. E.; VEIGA, M. O.; SOTO-BLANCO, B. |
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Afiliação: |
GABRIELLA M. L. DIAMANTINO, Universidade Federal de Minas Gerais; FELIPE PIEREZAN, Universidade Federal de Minas Gerais; MARIA IZABEL CARNEIRO FERREIRA, CNPC; WADSON SEBASTIAO DUARTE DA ROCHA, CNPGL; VANIA MARIA DE OLIVEIRA, CNPGL; CARLOS EUGENIO MARTINS, CNPGL; MAÍRA O. VEIGA, Universidade Federal de Lavras; BENITO SOTO-BLANCO, Universidade Federal de Minas Gerais. |
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Título: |
Photosensitization by Brachiaria ruziziensis in a sheep herd. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Toxicon, v. 185, p. 1-4, 2020. |
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DOI: |
https://doi.org/10.1016/j.toxicon.2020.06.022 |
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Idioma: |
Inglês |
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Conteúdo: |
Some species of the genus Brachiaria are cultivated worldwide in tropical and subtropical climate regions as the main feed for ruminants. Several studies report photosensitization by Brachiaria decumbens, Brachiaria brizantha, and Brachiaria humidicola, but the poisoning by Brachiaria ruziziensis have been reported only twice. Cutaneous and hepatic lesions may be caused by the steroidal saponins present in the leaves or by the mycotoxin sporidesmin produced by the saprophyte fungus Pithomyces chartarum. The present report describes the clinical and pathological changes observed in an outbreak of hepatogenic photosensitization in sheep kept in B. ruziziensis pastures. In addition, the present study will provide a better understanding of the etiology of this photosensitization through the evaluation of the saponin protodioscin and the spore count of P. chartarum. Santa In^es and Lacaune mixed-breed sheep showed signs of photosensitization after feeding B. ruziziensis. Clinical signs included jaundice, apathy, dehydration, and photosensitization characterized by facial edema and cutaneous scars, especially in the ears. Pathological examination of the liver revealed diffuse infiltrates of foamy cells, rare
multinucleated cells, and mild enlargement of hepatocytes (megalocytosis). The skin showed acute epidermal and dermal necrosis with occlusive thrombi. B. ruziziensis showed low levels of protodioscin (0.020 +- 0.024% in mature leaves and 0.065 +- 0.084% in sprouts) but high P. chartarum spore counts (mean of 479,844 +- 443,951 spores/g plant). Thus, sheep grazing B. ruziziensis pastures must be closely monitored because of the risk of photosensitization. MenosSome species of the genus Brachiaria are cultivated worldwide in tropical and subtropical climate regions as the main feed for ruminants. Several studies report photosensitization by Brachiaria decumbens, Brachiaria brizantha, and Brachiaria humidicola, but the poisoning by Brachiaria ruziziensis have been reported only twice. Cutaneous and hepatic lesions may be caused by the steroidal saponins present in the leaves or by the mycotoxin sporidesmin produced by the saprophyte fungus Pithomyces chartarum. The present report describes the clinical and pathological changes observed in an outbreak of hepatogenic photosensitization in sheep kept in B. ruziziensis pastures. In addition, the present study will provide a better understanding of the etiology of this photosensitization through the evaluation of the saponin protodioscin and the spore count of P. chartarum. Santa In^es and Lacaune mixed-breed sheep showed signs of photosensitization after feeding B. ruziziensis. Clinical signs included jaundice, apathy, dehydration, and photosensitization characterized by facial edema and cutaneous scars, especially in the ears. Pathological examination of the liver revealed diffuse infiltrates of foamy cells, rare
multinucleated cells, and mild enlargement of hepatocytes (megalocytosis). The skin showed acute epidermal and dermal necrosis with occlusive thrombi. B. ruziziensis showed low levels of protodioscin (0.020 +- 0.024% in mature leaves and 0.065 +- 0.084% in sprouts) but high P.... Mostrar Tudo |
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Thesagro: |
Fotossensibilização; Ovelha; Ovino; Pastagem; Saponina. |
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Thesaurus NAL: |
Pithomyces; Plant poisoning. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02510naa a2200301 a 4500
001 2133838
005 2021-08-25
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.toxicon.2020.06.022$2DOI
100 1 $aDIAMANTINO, G. M. L.
245 $aPhotosensitization by Brachiaria ruziziensis in a sheep herd.$h[electronic resource]
260 $c2020
520 $aSome species of the genus Brachiaria are cultivated worldwide in tropical and subtropical climate regions as the main feed for ruminants. Several studies report photosensitization by Brachiaria decumbens, Brachiaria brizantha, and Brachiaria humidicola, but the poisoning by Brachiaria ruziziensis have been reported only twice. Cutaneous and hepatic lesions may be caused by the steroidal saponins present in the leaves or by the mycotoxin sporidesmin produced by the saprophyte fungus Pithomyces chartarum. The present report describes the clinical and pathological changes observed in an outbreak of hepatogenic photosensitization in sheep kept in B. ruziziensis pastures. In addition, the present study will provide a better understanding of the etiology of this photosensitization through the evaluation of the saponin protodioscin and the spore count of P. chartarum. Santa In^es and Lacaune mixed-breed sheep showed signs of photosensitization after feeding B. ruziziensis. Clinical signs included jaundice, apathy, dehydration, and photosensitization characterized by facial edema and cutaneous scars, especially in the ears. Pathological examination of the liver revealed diffuse infiltrates of foamy cells, rare multinucleated cells, and mild enlargement of hepatocytes (megalocytosis). The skin showed acute epidermal and dermal necrosis with occlusive thrombi. B. ruziziensis showed low levels of protodioscin (0.020 +- 0.024% in mature leaves and 0.065 +- 0.084% in sprouts) but high P. chartarum spore counts (mean of 479,844 +- 443,951 spores/g plant). Thus, sheep grazing B. ruziziensis pastures must be closely monitored because of the risk of photosensitization.
650 $aPithomyces
650 $aPlant poisoning
650 $aFotossensibilização
650 $aOvelha
650 $aOvino
650 $aPastagem
650 $aSaponina
700 1 $aPIEREZAN, F.
700 1 $aFERREIRA, M. I. C.
700 1 $aROCHA, W. S. D. da
700 1 $aOLIVEIRA, V. M. de
700 1 $aMARTINS, C. E.
700 1 $aVEIGA, M. O.
700 1 $aSOTO-BLANCO, B.
773 $tToxicon$gv. 185, p. 1-4, 2020.
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