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Registro Completo |
Biblioteca(s): |
Embrapa Uva e Vinho. |
Data corrente: |
15/12/2008 |
Data da última atualização: |
11/06/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
VELINI, E.; ALVES, E.; GODOY, M. C.; MESCHEDE, D. K.; SOUZA, R. T. de; DUKE, S. O. |
Afiliação: |
EDIVALDO VELINI, USP/Esalq; ELZA ALVES, USP/Esalq; MARIA C. GODOY, USP/Esalq; DANA K. MESCHADE, USP/Esalq; REGINALDO TEODORO DE SOUZA, CNPUV; STEPHEN O. DUKE, US Department of Agriculture. |
Título: |
Glyphosate applied at low doses can stimulate plant growth. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
Pest Management Science, Sussex, v. 64, n. 4, p. 489-496, 2008. |
Idioma: |
Inglês |
Conteúdo: |
BACKGROUND:Glyphosate blocks the shikimic acid pathway, inhibiting the production of aromatic amino acids and several secondary compounds derived from these amino acids. Non-target plants can be exposed to low doses of glyphosate by herbicide drift of spray droplets and contact with treated weeds. Previous studies have reported that low doses of glyphosate stimulate growth, although these data are very limited. The objective of this study was to determine the effects of low glyphosate doses on growth of a range of plant species. RESULTS:Growth of maize, conventional soybean, Eucalyptus grandis Hill ex Maiden, Pinus caribea L. and Commelia benghalensis L. was enhanced by 1.8-36 g glyphosate ha-1. Growth of glyphosate-resistant soybean was unaffected by any glyphosate dose from 1.8 to 720 g AE ha-1. The optimum doses for growth stimulation were distinct for plant species and tissue evaluated. The greatest stimulation of growth was observed for C. benghalensis and P. caribea. Shikimic acid levels in tissues of glyphosate-treated soybean and maize were measured and found to be elevated at growth-stimulating doses. CONCLUSION:Subtoxic doses of glyphosate stimulate the growth of a range of plant species, as measured in several plant organs. This hormesis effect is likely to be related to the molecular target of glyphosate, since the effect was not seen in glyphosate-resistant plants, and shikimate levels were enhanced in plants with stimulated growth. Copyright © 2008 Society of Chemical Industry MenosBACKGROUND:Glyphosate blocks the shikimic acid pathway, inhibiting the production of aromatic amino acids and several secondary compounds derived from these amino acids. Non-target plants can be exposed to low doses of glyphosate by herbicide drift of spray droplets and contact with treated weeds. Previous studies have reported that low doses of glyphosate stimulate growth, although these data are very limited. The objective of this study was to determine the effects of low glyphosate doses on growth of a range of plant species. RESULTS:Growth of maize, conventional soybean, Eucalyptus grandis Hill ex Maiden, Pinus caribea L. and Commelia benghalensis L. was enhanced by 1.8-36 g glyphosate ha-1. Growth of glyphosate-resistant soybean was unaffected by any glyphosate dose from 1.8 to 720 g AE ha-1. The optimum doses for growth stimulation were distinct for plant species and tissue evaluated. The greatest stimulation of growth was observed for C. benghalensis and P. caribea. Shikimic acid levels in tissues of glyphosate-treated soybean and maize were measured and found to be elevated at growth-stimulating doses. CONCLUSION:Subtoxic doses of glyphosate stimulate the growth of a range of plant species, as measured in several plant organs. This hormesis effect is likely to be related to the molecular target of glyphosate, since the effect was not seen in glyphosate-resistant plants, and shikimate levels were enhanced in plants with stimulated growth. Copyright © 2008 Society of C... Mostrar Tudo |
Palavras-Chave: |
Crescimento vegetativo; Glifosato. |
Thesagro: |
Agricultura; Agrotóxico; Eucalipto; Herbicida; Milho; Soja. |
Thesaurus Nal: |
Pinus. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/195637/1/Velini-et-al-2008-Pest-Management-Science.pdf
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Marc: |
LEADER 02267naa a2200289 a 4500 001 1543207 005 2019-06-11 008 2008 bl uuuu u00u1 u #d 100 1 $aVELINI, E. 245 $aGlyphosate applied at low doses can stimulate plant growth.$h[electronic resource] 260 $c2008 520 $aBACKGROUND:Glyphosate blocks the shikimic acid pathway, inhibiting the production of aromatic amino acids and several secondary compounds derived from these amino acids. Non-target plants can be exposed to low doses of glyphosate by herbicide drift of spray droplets and contact with treated weeds. Previous studies have reported that low doses of glyphosate stimulate growth, although these data are very limited. The objective of this study was to determine the effects of low glyphosate doses on growth of a range of plant species. RESULTS:Growth of maize, conventional soybean, Eucalyptus grandis Hill ex Maiden, Pinus caribea L. and Commelia benghalensis L. was enhanced by 1.8-36 g glyphosate ha-1. Growth of glyphosate-resistant soybean was unaffected by any glyphosate dose from 1.8 to 720 g AE ha-1. The optimum doses for growth stimulation were distinct for plant species and tissue evaluated. The greatest stimulation of growth was observed for C. benghalensis and P. caribea. Shikimic acid levels in tissues of glyphosate-treated soybean and maize were measured and found to be elevated at growth-stimulating doses. CONCLUSION:Subtoxic doses of glyphosate stimulate the growth of a range of plant species, as measured in several plant organs. This hormesis effect is likely to be related to the molecular target of glyphosate, since the effect was not seen in glyphosate-resistant plants, and shikimate levels were enhanced in plants with stimulated growth. Copyright © 2008 Society of Chemical Industry 650 $aPinus 650 $aAgricultura 650 $aAgrotóxico 650 $aEucalipto 650 $aHerbicida 650 $aMilho 650 $aSoja 653 $aCrescimento vegetativo 653 $aGlifosato 700 1 $aALVES, E. 700 1 $aGODOY, M. C. 700 1 $aMESCHEDE, D. K. 700 1 $aSOUZA, R. T. de 700 1 $aDUKE, S. O. 773 $tPest Management Science, Sussex$gv. 64, n. 4, p. 489-496, 2008.
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Embrapa Uva e Vinho (CNPUV) |
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1. | | SALMAN, A. K. D.; BACELAR, B. M. F. S.; ALVES, E. A.; MARCOLAN, A. L.; CARARO, D. C.; OSMARI, E. K.; MENDES, A. M.; CASTILHO, D. A. da S. Leaf chlorophyll index of Brachiaria brizantha cv. Piatã and Panicum maximum cv. Mombaça under different doses of nitrogen and potassium. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 51., 2014, Barra dos Coqueiros. A produção animal frente às mudanças climáticas e tecnológicas - anais. Barra dos coqueiros: Sociedade Brasileira de Zootecnia, 2014.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Rondônia. |
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2. | | BACELAR, B. M. F. S.; SALMAN, A. K. D.; ALVES, E. A.; MARCOLAN, A. L.; OSMARI, E. K.; CARARO, D. C.; MENDES, A. M.; CASTILHO, D. A. da S. Índice de clorofila foliar nos capins Brachiaria brizantha cv. Piatã e Panicum maximum cv. Mombaça submetidos a diferentes níveis de adubação nitrogenada e potássica. In: CONGRESSO BRASILEIRO DE ZOOTECNIA, 24., 2014, Vitória. A Zootecnia fazendo o Brasil crescer. Vitória, ES: UFES, 2014.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Rondônia. |
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