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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
29/05/2002 |
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Data da última atualização: |
29/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; BALIGAR, V. C.; CLARK, R. B. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF. |
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Título: |
Micronutrients in crop production. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Advances in Agronomy, v. 77, p. 185-268, 2002. |
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DOI: |
https://doi.org/10.1016/S0065-2113(02)77015-6 |
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Idioma: |
Inglês |
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Conteúdo: |
The essential micronutrients for field crops are B, Cu, Fe, Mn, Mo, and Zn. Other mineral nutrients at low concentrations considered essential to growth of some plants are Ni and Co. The incidence of micronutrient deficiencies in crops has increased markedly in recent years due to intensive cropping, loss of top soil by erosion, losses of micronutrients through leaching, liming of acid soils, decreased proportions of farmyard manure compared to chemical fertilizers, increased purity of chemical fertilizers, and use of marginal lands for crop production. Micronutrient deficiency problems are also aggravated by the high demand of modern crop cultivars. Increases in crop yields from application of micronutrients have been reported in many parts of the world. Factors such as pH, redox potential, biological activity, SOM, cation-exchange capacity, and clay contents are important in determining the availability of micronutrients in soils. Plant factors such as root and root hair morphology (length, density, surface area), root-induced changes (secretion of H+, OH−, HCO3−), root exudation of organic acids (citric, malic, tartaric, oxalic, phenolic), sugars, and nonproteinogenic amino acids (phytosiderophores), secretion of enzymes (phosphatases), plant demand, plant species/cultivars, and microbial associations (enhanced CO2 production, rhizobia, mycorrhizae, rhizobacteria) have profound influences on plant ability to absorb and utilize micronutrients from soil. The objectives of this article are to report advances in research on the micronutrient availability and requirements for crops, in correcting deficiencies and toxicities in soils and plants, and in increasing the ability of plants to acquire needed amounts of micronutrient elements. MenosThe essential micronutrients for field crops are B, Cu, Fe, Mn, Mo, and Zn. Other mineral nutrients at low concentrations considered essential to growth of some plants are Ni and Co. The incidence of micronutrient deficiencies in crops has increased markedly in recent years due to intensive cropping, loss of top soil by erosion, losses of micronutrients through leaching, liming of acid soils, decreased proportions of farmyard manure compared to chemical fertilizers, increased purity of chemical fertilizers, and use of marginal lands for crop production. Micronutrient deficiency problems are also aggravated by the high demand of modern crop cultivars. Increases in crop yields from application of micronutrients have been reported in many parts of the world. Factors such as pH, redox potential, biological activity, SOM, cation-exchange capacity, and clay contents are important in determining the availability of micronutrients in soils. Plant factors such as root and root hair morphology (length, density, surface area), root-induced changes (secretion of H+, OH−, HCO3−), root exudation of organic acids (citric, malic, tartaric, oxalic, phenolic), sugars, and nonproteinogenic amino acids (phytosiderophores), secretion of enzymes (phosphatases), plant demand, plant species/cultivars, and microbial associations (enhanced CO2 production, rhizobia, mycorrhizae, rhizobacteria) have profound influences on plant ability to absorb and utilize micronutrients from soil. The objectives of t... Mostrar Tudo |
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Thesagro: |
Deficiência; Matéria Orgânica; Planta; Solo. |
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Thesaurus Nal: |
Nutrient deficiencies; Organic matter; Plant micronutrients; Soil. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02457naa a2200253 a 4500
001 1209894
005 2022-04-29
008 2002 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/S0065-2113(02)77015-6$2DOI
100 1 $aFAGERIA, N. K.
245 $aMicronutrients in crop production.$h[electronic resource]
260 $c2002
520 $aThe essential micronutrients for field crops are B, Cu, Fe, Mn, Mo, and Zn. Other mineral nutrients at low concentrations considered essential to growth of some plants are Ni and Co. The incidence of micronutrient deficiencies in crops has increased markedly in recent years due to intensive cropping, loss of top soil by erosion, losses of micronutrients through leaching, liming of acid soils, decreased proportions of farmyard manure compared to chemical fertilizers, increased purity of chemical fertilizers, and use of marginal lands for crop production. Micronutrient deficiency problems are also aggravated by the high demand of modern crop cultivars. Increases in crop yields from application of micronutrients have been reported in many parts of the world. Factors such as pH, redox potential, biological activity, SOM, cation-exchange capacity, and clay contents are important in determining the availability of micronutrients in soils. Plant factors such as root and root hair morphology (length, density, surface area), root-induced changes (secretion of H+, OH−, HCO3−), root exudation of organic acids (citric, malic, tartaric, oxalic, phenolic), sugars, and nonproteinogenic amino acids (phytosiderophores), secretion of enzymes (phosphatases), plant demand, plant species/cultivars, and microbial associations (enhanced CO2 production, rhizobia, mycorrhizae, rhizobacteria) have profound influences on plant ability to absorb and utilize micronutrients from soil. The objectives of this article are to report advances in research on the micronutrient availability and requirements for crops, in correcting deficiencies and toxicities in soils and plants, and in increasing the ability of plants to acquire needed amounts of micronutrient elements.
650 $aNutrient deficiencies
650 $aOrganic matter
650 $aPlant micronutrients
650 $aSoil
650 $aDeficiência
650 $aMatéria Orgânica
650 $aPlanta
650 $aSolo
700 1 $aBALIGAR, V. C.
700 1 $aCLARK, R. B.
773 $tAdvances in Agronomy$gv. 77, p. 185-268, 2002.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
14/03/2013 |
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Data da última atualização: |
14/03/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
PRADO, J. S. M.; LOURENÇÃO, A. L.; GUEDES, R. N. C.; PALLINI, A.; OLIVEIRA, J. A.; OLIVEIRA, M. G. A. |
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Afiliação: |
JEANNE SCARDINI MARINHO PRADO, CNPMA; A. L. LOURENÇÃO, IAC; R. N. C. GUEDES, Departamento de Entomologia - UFV; A. PALLINI, Departamento de Entomologia - UFV; J. A. OLIVEIRA, Departamento de Química - UFV; M. G. A. OLIVEIRA, Departamento de Bioquímica e Biologia Molecular - UFV. |
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Título: |
Enzymatic response of the eucalypt defoliator Thyrinteina arnobia (Stoll) (Lepidoptera: Geometridae) to a bis-benzamidine proteinase inhibitor. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Neotropical Entomology, v. 41, p. 420-425, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Ingestion of proteinase inhibitors leads to hyperproduction of digestive proteinases, limiting the bioavailability of essential amino acids for protein synthesis, which affects insect growth and development. However, the effects of proteinase inhibitors on digestive enzymes can lead to an adaptive response by the insect. In here, we assessed the biochemical response of midgut proteinases from the eucalypt defoliator Thyrinteina arnobia (Stoll) to different concentrations of berenil, a bisbenzamidine proteinase inhibitor, on eucalyptus. Eucalyptus leaves were immersed in berenil solutions at different concentrations and fed to larvae of T. arnobia. Mortality was assessed daily. The proteolytic activity in the midgut of T. arnobia was assessed after feeding on plants sprayed with aqueous solutions of berenil, fed to fifth instars of T. arnobia for 48 h before midgut removal for enzymatic assays. Larvae of T. arnobia were able to overcome the effects of the lowest berenil concentrations by increasing their trypsin-like activity, but not as berenil concentration increased, despite the fact that the highest berenil concentration resulted in overproduction of trypsin-like proteinases. Berenil also prevented the increase of the cysteine proteinases activity in response to trypsin inhibition. |
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Palavras-Chave: |
Synthetic inhibitor. |
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Thesaurus NAL: |
Pest control; trypsin. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/79048/1/AP-Marinho-PradoJS-NeotropicalEntomology-B1.pdf
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Marc: |
LEADER 01997naa a2200217 a 4500
001 1953013
005 2013-03-14
008 2012 bl uuuu u00u1 u #d
100 1 $aPRADO, J. S. M.
245 $aEnzymatic response of the eucalypt defoliator Thyrinteina arnobia (Stoll) (Lepidoptera$bGeometridae) to a bis-benzamidine proteinase inhibitor.$h[electronic resource]
260 $c2012
520 $aIngestion of proteinase inhibitors leads to hyperproduction of digestive proteinases, limiting the bioavailability of essential amino acids for protein synthesis, which affects insect growth and development. However, the effects of proteinase inhibitors on digestive enzymes can lead to an adaptive response by the insect. In here, we assessed the biochemical response of midgut proteinases from the eucalypt defoliator Thyrinteina arnobia (Stoll) to different concentrations of berenil, a bisbenzamidine proteinase inhibitor, on eucalyptus. Eucalyptus leaves were immersed in berenil solutions at different concentrations and fed to larvae of T. arnobia. Mortality was assessed daily. The proteolytic activity in the midgut of T. arnobia was assessed after feeding on plants sprayed with aqueous solutions of berenil, fed to fifth instars of T. arnobia for 48 h before midgut removal for enzymatic assays. Larvae of T. arnobia were able to overcome the effects of the lowest berenil concentrations by increasing their trypsin-like activity, but not as berenil concentration increased, despite the fact that the highest berenil concentration resulted in overproduction of trypsin-like proteinases. Berenil also prevented the increase of the cysteine proteinases activity in response to trypsin inhibition.
650 $aPest control
650 $atrypsin
653 $aSynthetic inhibitor
700 1 $aLOURENÇÃO, A. L.
700 1 $aGUEDES, R. N. C.
700 1 $aPALLINI, A.
700 1 $aOLIVEIRA, J. A.
700 1 $aOLIVEIRA, M. G. A.
773 $tNeotropical Entomology$gv. 41, p. 420-425, 2012.
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