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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
14/09/2018 |
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Data da última atualização: |
14/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FEITOZA, R. B. B.; LIMA, H. R. P.; OLIVERIA, E. A. G.; OLIVEIRA; MORAES, L. F. D. de; OLIVEIRA, A. E. A.; CARVALHO, F. M. G.; CUNHA, D. M. da. |
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Afiliação: |
UENF; UFRRJ; OLIVEIRA, E.A.G., UFRJ; C, D.R. OLIVEIRA, UFRRJ; LUIZ FERNANDO DUARTE DE MORAES, CNPAB; A.E.A. OLIVEIRA, UENF; F, M.G. CARVALHO, UFRRJ; D, M. DA CUNHA, UENF. |
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Título: |
Structural and ultrastructural variations in roots of Calopogonium mucunoides Desv. treated with phenolic compounds from Urochloa humidicola (Rendle) Morrone & Zuloaga and phenolic commercial standards. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
South African Journal of Botany, v. 116, p. 142-149, 2018. |
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Idioma: |
Português |
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Conteúdo: |
Urochloa humidicola (Rendle) Morrone & Zuloaga is an exotic forage grass cultivated in Brazil. Previous studies have identified different phenolic compounds produced by this species, including flavonoids and p-coumaric acid, which have been well-known as allelochemical compounds. We evaluated the morphology, anatomy and ultrastructure of Calopogoniummucunoides roots exposed to phenolic compounds found in U. humidicola. Leaves of U. humidicola were dried, crushed and submitted to extraction in methanol solution, which was fractionated through partition using organic solvents. In the bioassays, the hydromethanolic leaf extract of U. humidicola, commercial standard solutions of phenols and a control were all tested against the germination and seedling growth of C. mucunoides. The seedlings of C. mucunoides were measured, morphologically described, and the roots were processed according to standard techniques for plant anatomy and electron microscopy. Urochloa humidicola leaf extract inhibited root development, although they stimulated shoot elongation. The p-coumaric acid strongly inhibited plant development, caused root tip necrosis and decreased production of lateral roots, as well as changes in anatomy. Seedlings treated with quercitrin, luteolin and fisetin showed greater lengths, whereas kaempferol negatively affected root growth. Also, U. humidicola extract, p-coumaric acid and kaempferol caused marked changes in root cell ultrastructure. These results suggest a potential phytotoxic effect caused by U. humidicola leaf compounds isolated against C. mucunoides seedlings, although the association of these compounds is suggested to be antagonistic. MenosUrochloa humidicola (Rendle) Morrone & Zuloaga is an exotic forage grass cultivated in Brazil. Previous studies have identified different phenolic compounds produced by this species, including flavonoids and p-coumaric acid, which have been well-known as allelochemical compounds. We evaluated the morphology, anatomy and ultrastructure of Calopogoniummucunoides roots exposed to phenolic compounds found in U. humidicola. Leaves of U. humidicola were dried, crushed and submitted to extraction in methanol solution, which was fractionated through partition using organic solvents. In the bioassays, the hydromethanolic leaf extract of U. humidicola, commercial standard solutions of phenols and a control were all tested against the germination and seedling growth of C. mucunoides. The seedlings of C. mucunoides were measured, morphologically described, and the roots were processed according to standard techniques for plant anatomy and electron microscopy. Urochloa humidicola leaf extract inhibited root development, although they stimulated shoot elongation. The p-coumaric acid strongly inhibited plant development, caused root tip necrosis and decreased production of lateral roots, as well as changes in anatomy. Seedlings treated with quercitrin, luteolin and fisetin showed greater lengths, whereas kaempferol negatively affected root growth. Also, U. humidicola extract, p-coumaric acid and kaempferol caused marked changes in root cell ultrastructure. These results suggest a potential... Mostrar Tudo |
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Palavras-Chave: |
Structural changes. |
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Thesaurus Nal: |
P-coumaric acid; Plant anatomy; Poaceae. |
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Categoria do assunto: |
-- |
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Marc: |
null
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
19/10/2021 |
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Data da última atualização: |
19/10/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SIMÕES, M.; COSTA, G. A. P.; SINGH, D.; SINGH, K. P.; COUTINHO, H. L. da C.; FRAGA, E.; BERROIR, J. P.; HERLIN, I.; VIEIRA, H. V.; SANTOS, U. P. |
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Afiliação: |
MARGARETH GONCALVES SIMOES, CNPS; GILSON A. P. COSTA, UERJ; D. SINGH, Harcourt Butler Technological Institute, Kanpur; K. P. SINGH, Harcourt Butler Technological Institute, Kanpur; HEITOR LUIZ DA COSTA COUTINHO, CNPS; E. FRAGA, CNPS; J. P. BERROIR, INRIA; I. HERLIN, INRIA; H. V. VIEIRA, UFRJ; U. P. SANTOS, UFRJ. |
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Título: |
Remote sensing and spatial decision support system for environmental degradation monitoring. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, 2003, Toulouse. Proceedings... Piscataway: IEEE, 2003. v. 3, p. 2088-2090. IGARSS 2003. |
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DOI: |
https://doi.org/10.1109/IGARSS.2003.1294348 |
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Idioma: |
Inglês |
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Conteúdo: |
Agricultural activities have expanded dramatically in Brazil during the last 30 years, causing significant damage to the original Cerrado ecosystem and threatening the Pantanal biome. Therefore, there is an urgent need to develop such a system, which can predict erosion and all other related problems of this area. Now days, remote sensing from satellite platforms has become increasingly important as the only means of achieving the spatial and temporal coverage global land process. Due to this, remote sensing is very useful tool to monitor the ecological and environmental parameters. So, present work aims to describes the conception of the development of a Spatial Decision Support System (SDSS) to assist land use management of the Upper Taquari Basin, Mato Grosso do Sul, Brasil being a useful tool to environmental decision makers and propose a remote sensing based model to assess the erosion process using National Oceanic and Atmospheric Administration (NOAA)/Advanced Very High Resolution Radiometer (AVHRR) data. |
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Thesaurus NAL: |
Remote sensing; Soil color; Soil erosion. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
null
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Registro original: |
Embrapa Solos (CNPS) |
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