Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 5
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Resistance to triazole fungicides in Pyricularia species associated with invasive plants from wheat fields in Brazil Agronomy
Dorigan, Adriano Francis; Carvalho, Giselle de; Poloni, Nadia Maria; Negrisoli, Matheus Mereb; Maciel, João Leodato Nunes; Ceresini, Paulo Cezar.
Triazole fungicides have not been effective for managing the wheat blast disease in Brazil. A broad analysis across six geographical populations of Pyricularia graminis-tritici in central-southern Brazil indicated a high level of resistance to triazole fungicides. Since P. graminis-tritici is also associated with others poaceous species, here, we analyzed whether triazole-resistant isolates of the blast pathogen could be recovered from other poaceous hosts that are invasive of sprayed wheat fields. In addition to P. graminis-tritici (Pygt), we also evaluated the levels of sensitivity of three other grass-associated blast pathogens, which included P. grisea (Pg), P. pennisetigena (Pp), and P. urashimae (Pu). Resistance to the triazole fungicides...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Blast disease; CYP51A gene; Sterol demethylation inhibitor (DMI) fungicides; Epoxiconazole; Tebuconazole; Resistência a fungicidas na agricultura / Fungicide resistance in agriculture.
Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39332
Imagem não selecionada

Imprime registro no formato completo
Resistance to triazole fungicides in Pyricularia species associated with invasive plants from wheat fields in Brazil Agronomy
Dorigan, Adriano Francis; Carvalho, Giselle de; Poloni, Nadia Maria; Negrisoli, Matheus Mereb; Maciel, João Leodato Nunes; Ceresini, Paulo Cezar.
Triazole fungicides have not been effective for managing the wheat blast disease in Brazil. A broad analysis across six geographical populations of Pyricularia graminis-tritici in central-southern Brazil indicated a high level of resistance to triazole fungicides. Since P. graminis-tritici is also associated with others poaceous species, here, we analyzed whether triazole-resistant isolates of the blast pathogen could be recovered from other poaceous hosts that are invasive of sprayed wheat fields. In addition to P. graminis-tritici (Pygt), we also evaluated the levels of sensitivity of three other grass-associated blast pathogens, which included P. grisea (Pg), P. pennisetigena (Pp), and P. urashimae (Pu). Resistance to the triazole fungicides...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.01.02.01-0 blast disease; CYP51A gene; Sterol demethylation inhibitor (DMI) fungicides; Epoxiconazole; Tebuconazole Resistência a fungicidas na agricultura / Fungicide resistance in agriculture.
Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39332
Imagem não selecionada

Imprime registro no formato completo
Comparative study of three analysis methods (TTGE, flow cytometry and HPLC) for xenobiotic impact assessment on phytoplankton communities ArchiMer
Stachowski-haberkorn, Sabine; Quiniou, Louis; Beker, Beatriz; Haberkorn, Hansy; Marie, Dominique; De La Broise, Denis.
The impacts of the fungicide Opus(A (R)) (epoxiconazole) on marine phytoplankton communities were assessed in a 12-day field experiment using in situ microcosms maintained underwater at 6 m depth. Three community analysis methods were compared for their sensitivity threshold in fungicide impact detection. When phytoplankton communities were exposed to 1 mu g l(-1) of epoxiconazole, no effects could be demonstrated using TTGE (Temporal Temperature Gradient gel Electrophoresis), flow cytometry or HPLC. When exposed to 10 mu g l(-1), TTGE fingerprints from PCR amplified 18S rDNA of communities exhibited significant differences compared with controls (ANOSIM, P = 0.028). Neither flow cytometry counts, nor HPLC pigment profiles allowed to show significant...
Tipo: Text Palavras-chave: Microcosm; Phytoplankton community; Epoxiconazole; TTGE; Flow cytometry; HPLC.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00088/19888/17547.pdf
Imagem não selecionada

Imprime registro no formato completo
In-situ microcosms, a tool for assessment of pesticide impacts on oyster spat (Crassostrea gigas) ArchiMer
Stachowski Haberkorn, S; Quiniou, Francoise; Nedelec, M; Robert, Rene; Limon, G; De La Broise, D.
Effects of the herbicide Basamais (bentazon) and the fungicide Opus (epoxiconazole) on oyster spat (Crassostrea gigas) were assessed using in-situ microcosms in a field experiment lasting 13 days. Six-week-old hatchery spat (mean size 1.1 mm), previously collected on PVC plates, was immersed in glass bottles filled with 200 mu m filtered seawater. Bottles were maintained underwater at 6 m depth and their water content changed every other day. Growth, measured as shell area index increase, was 126 +/- 4% in the control bottles. While no growth differences were observed between control and individual pesticide treatments at 10 mu g l(-1), oysters treated with a mix of 10 mu g l(-1) Opus and 10 mu g l(-1) Basamais showed a 50% growth reduction compared with...
Tipo: Text Palavras-chave: Epoxiconazole; Bentazon; Pesticide; Toxicity; Oyster; Microcosm.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4134.pdf
Imagem não selecionada

Imprime registro no formato completo
Toxicity of Epoxiconazole to the Marine Diatom Chaetoceros calcitrans: Influence of Growth Conditions and Algal Development Stage ArchiMer
Amara, Anis; Quiniou, Francoise; Durand, Gael; El Bour, Monia; Boudabous, Abdellatif; Hourmant, Annick.
The triazole fungicide epoxiconazole is extensively used to control fungi on crops and may present some potential risk from runoff on coastal ecosystems located close to agricultural areas. Phytotoxicity assessments were conducted on the marine diatom Chaetoceros calcitrans using both the active ingredient and its formulated product (Opus). The 3-day EC50 using cell count was 2.31 mg/L for epoxiconazole active ingredient and 2.9 mu g/L for epoxiconazole-formulated. The fungicide produced an increase of cellular volume, pigment (chlorophylls a, c, and carotenoids) content, ATP synthesis, and rates of photosynthesis and respiration. Progressive algal cell recovery from epoxiconazole effects occurred after 3 days, with the increasing cell density. Differences...
Tipo: Text Palavras-chave: Age cell; Chaetoceros calcitrans; Culture conditions; Epoxiconazole; Growth; Physiological parameters.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00130/24105/22491.pdf
Registros recuperados: 5
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional