Relevant bibliographies by topics / Triadimenol

Academic literature on the topic 'Triadimenol'

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Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Triadimenol"

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Erickson, Eugene O., and Wayne F. Wilcox. "Distributions of Sensitivities to Three Sterol Demethylation Inhibitor Fungicides Among Populations of Uncinula necator Sensitive and Resistant to Triadimefon." Phytopathology® 87, no. 8 (August 1997): 784–91. http://dx.doi.org/10.1094/phyto.1997.87.8.784.

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Single-conidial isolates of Uncinula necator from (i) a population representing two vineyards with no previous exposure to sterol demethylation inhibitor (DMI) fungicides (“unexposed,” n = 77) and (ii) a population representing two vineyards in which powdery mildew was poorly controlled by triadimefon after prolonged DMI use (“selected,” n = 82) were assayed to determine distributions of sensitivities to the DMI fungicides triadimenol (the active form of triadimefon), myclobutanil, and fenarimol. Median 50% effective dose (ED50) values (micrograms per milliliter) in the selected versus unexposed populations were 0.06 versus 1.9 for triadimenol, 0.03 versus 0.23 for myclobutanil, and 0.03 versus 0.07 for fenarimol, respectively. Isolates were grouped into sensitivity classes according to their ED50 values, and those from the selected population were categorized as resistant if the frequency of their sensitivity class had increased significantly relative to levels found in the unexposed population (ED50 values exceeding 0.56, 0.18, and 0.18 μg/ml for triadimenol, myclobutanil, and fenarimol, respectively). Of the 76 isolates defined as resistant to triadimenol, 64% were classified as cross-resistant to myclobutanil, 18% were classified as cross-resistant to fenarimol, and 17% were classified as resistant to all three fungicides; 25% of the isolates classified as resistant to myclobutanil also were classified as resistant to fenarimol. Similar cross-resistance relationships were revealed when all isolates were examined by regressing log ED50 values for each fungicide against those for the remaining two fungicides to determine the correlation coefficients (e.g., r = 0.85 for triadimenol versus myclobutanil and 0.56 for triadimenol versus fenarimol). The restricted levels of cross-resistance indicated by these data, particularly between fenarimol and the other two fungicides, is in sharp contrast to the high levels of cross-resistance among DMIs reported for some other pathogens and has significant implications with respect to programs for managing grapevine powdery mildew and DMI resistance.
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Da Silva, J. "Aqueous photochemistry of pesticides triadimefon and triadimenol." Journal of Photochemistry and Photobiology A: Chemistry 154, no. 2-3 (January 24, 2003): 293–98. http://dx.doi.org/10.1016/s1010-6030(02)00328-3.

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Nogueira, Sônia Regina, Hilário Antonio de Castro, and Claudomiro Moura Gomes André. "Efeito de fungicidas na germinação in vitro de conídios de Claviceps africana." Pesquisa Agropecuária Brasileira 37, no. 10 (October 2002): 1511–15. http://dx.doi.org/10.1590/s0100-204x2002001000020.

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A cultura do sorgo não enfrentava problemas sérios de doenças nas condições de cultivo no Brasil, até o ano de 1995, quando se registrou a ocorrência da doença-açucarada, causada por Claviceps africana, que afeta as panículas e reduz a quantidade e a qualidade dos grãos; os conídios constituem a principal fonte de inóculo fúngico. Este trabalho teve como objetivo estudar o efeito dos fungicidas tebuconazole, propiconazole, triadimenol, triadimefon, flutriafol e mancozeb na inibição in vitro da germinação dos conídios. Os fungicidas mancozeb, triadimenol e propiconazole foram os mais eficientes na inibição da germinação dos conídios.
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Li, Ying-Hong, Bei-Lei Zhou, Ming-Rong Qian, Qiang Wang, and Hu Zhang. "Transfer and Metabolism of Triadimefon Residues from Rape Flowers to Apicultural Products." Journal of Analytical Methods in Chemistry 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/7697345.

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This paper presents a study on the transfer and metabolism of triadimefon residues from rape flowers to apicultural products. In the field trials, honeybee colonies were placed in four rape greenhouses treated with triadimefon on standard dosage. Apicultural products (pollen, honey, and royal jelly) were collected on a regular basis. Sample preparation and extraction procedure were established. HPLC/ESI-MS/MS method was validated. The respective residues of triadimefon and metabolite triadimenol were 0.03±0.002 mg/kg and 0.13±0.02 mg/kg in pollen on the 18th day, and both had reached the limits of detection in honey on the 24th day, while they were 0.004±0.0005 mg/kg and 0.010±0.0002 mg/kg in royal jelly on the 22nd day. Mathematical curve fitting studies were further investigated. On the basis of recommended dosage, the degradation half-lives of triadimefon in pollen, honey, and royal jelly were about 0.7, 12.5, and 19.5 days, respectively. Transfer of triadimefon residues from rape flowers to apicultural products diminished over spraying time. The residues of triadimefon and metabolite triadimenol in pollen were about 10 times higher than those in honey and jelly. Time to attain the maximum permissible limit of pollen in the European Union was 14.9 days, predicted from the index function.
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Da Silva, J. P., A. M. Da Silva, I. V. Khmelinskii, J. M. G. Martinho, and L. F. Vieira Ferreira. "Photophysics and photochemistry of azole fungicides: triadimefon and triadimenol." Journal of Photochemistry and Photobiology A: Chemistry 142, no. 1 (August 2001): 31–37. http://dx.doi.org/10.1016/s1010-6030(01)00489-0.

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Walker, Q. David, and Richard B. Mailman. "Triadimefon and Triadimenol: Effects on Monoamine Uptake and Release." Toxicology and Applied Pharmacology 139, no. 2 (August 1996): 227–33. http://dx.doi.org/10.1006/taap.1996.0161.

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Garrison, Arthur W., Jimmy K. Avants, and W. Jack Jones. "Microbial Transformation of Triadimefon to Triadimenol in Soils: Selective Production Rates of Triadimenol Stereoisomers Affect Exposure and Risk." Environmental Science & Technology 45, no. 6 (March 15, 2011): 2186–93. http://dx.doi.org/10.1021/es103430s.

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Garcia, J. E., J. Kirchhoff, and F. Grossmann. "Abbauverhalten von triadimefon und seinem metaboliten triadimenol in einer weizenmonokultur." Journal of Environmental Science and Health, Part B 25, no. 4 (August 1990): 473–91. http://dx.doi.org/10.1080/03601239009372701.

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Sannino, Anna, Mirella Bandini, and Luciana Bolzoni. "Multiresidue Determination of 19 Fungicides in Processed Fruits and Vegetables by Capillary Gas Chromatography after Gel Permeation Chromatography." Journal of AOAC INTERNATIONAL 82, no. 5 (September 1, 1999): 1229–38. http://dx.doi.org/10.1093/jaoac/82.5.1229.

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Abstract A gas chromatographic (GC) method was developed for simultaneous determination of 19 fungicides (chlorothalonil, vinclozolin, dichlofuanid, triadimefon, penconazole, chlozolinate, captan, procymidone, triadimenol, folpet, hexaconazole, myclobutanil, cyproconazole, propiconazole, nuarimol, captafol, iprodione, fenarimol, and bitertanol) and the acaricide tetradifon in tomato puree, peach nectar, orange juice, and canned peas. Samples were extracted with acetone, partitioned with ethyl acetate-cyclohexane (50 + 50, v/v), and cleaned using gel permeation chromatography with ethyl acetate-cyclohexane (50 + 50, v/v) as eluant. The final extract was analyzed by GC with ion trap mass spectrometry (ITMS) using a DB5 capillary column. Recoveries from fortified samples ranged from 74.6 to 99.3%, except for triadimenol and bitertanol. Quantitation limits for most anlytes were between 0.005 and 0.050 mg/kg. The purified extracts were analyzed further by GC with electron capture and nitrogen phosphorus detection, and the results were compared with those obtained by ITMS.
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Clark, Terence, and David A. M. Watkins. "Photolysis of triadimenol." Chemosphere 15, no. 6 (January 1986): 765–70. http://dx.doi.org/10.1016/0045-6535(86)90043-3.

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Dissertations / Theses on the topic "Triadimenol"

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Lopes, Alexandre Leite e. "Mobilidade do dissulfoton, de seus produtos de degradação e do triadimenol em Latossolo Vermelho-Amarelo." Universidade Federal de Viçosa, 2000. http://www.locus.ufv.br/handle/123456789/8681.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico
O objetivo deste trabalho foi avaliar a movimentação do dissulfoton, de seus produtos de degradação e do triadimenol, estudando-se a percolação desses compostos em amostras de solo da região de Viçosa, MG. No estudo da percolação, foram preparadas 10 séries de colunas de tubo de PVC empacotadas com solo, onde foi aplicada uma dosagem equivalente a 70 kg/ha do produto comercial contendo os princípios ativos dissulfoton e triadimenol. Sobre as colunas, foram feitas simulações de chuva equivalente a 35 mm de precipitação pluviométrica durante 90 dias, em intervalos de 10 dias. A avaliação da mobilidade desses compostos foi feita pela análise dos seus resíduos no solo e na água percolada. Inicialmente, foram realizados testes para avaliar a eficiência da técnica de extração do dissulfoton, de seus produtos de oxidação e do triadimenol em amostras de solo e de água. Os compostos foram extraídos das amostras de solo com acetona e das amostras de água com diclorometano, permitindo analisar, simultaneamente, todos os compostos com rendimentos satisfatórios. A quantificação dos resíduos presentes nos extratos das amostras foi feita em um cromatógrafo a gás com detector por ionização em chama. Os resultados indicaram que os princípios ativos dissulfoton e triadimenol não foram lixiviados abaixo dos 5 cm da coluna de solo. O dissulfoton rapidamente foi oxidado para dissulfoton sulfóxido e dissulfoton sulfona e, após 60 dias, para análogo oxigenado do dissulfoton sulfona. O dissulfoton sulfona percolou os 15 cm da coluna de solo, sendo detectado na água de percolação após 40 dias de experimento, mas os teores encontrados na água ficaram em torno de 1%. O análogo oxigenado do dissulfoton sulfona foi detectado após 60 dias ao longo da coluna de solo em quantidades variando entre 11 e 18% da dosagem de dissulfoton aplicada, mas não o foi na água percolada.
The purpose of this study was to evaluate the motion of disulfoton, its degradation products and triadimenol, investigating the percolation of these compounds in soil samples from the region of Viçosa, State of Minas Gerais, Brazil. In the percolation investigation, 10 series of PVC columns were packed with soil, to which were applied a dosage equivalent to 70 kg/ha of the commercial product, containing the active principles of disulfoton and triadimenol. Over the columns rain simulations were carried out equivalent to a rainfall of 35 mm, during 90 days, at 10 days intervals. The evaluation of the mobility of these compounds was done by the analysis of their residues in the soil and in the percolated water. Initially, essays to evaluate the efficiency of the extraction techniques for disulfoton, its oxidation products, and triadimenol, in soil and water samples, were carried out. The compounds were extracted from the soil samples with acetone and from the water samples with diclorometane, allowing simultaneous analysis of all compounds with satisfactory yields. The quantification of the residues present in the sample extracts was carried out with a gas chromatograph with a flame ionization detector. The results indicated that the active principles of disulfoton and triadimenol were not leached below 5 cm of the soil column. The disulfoton was rapidly oxidized to disulfoton sulfoxide and disulfoton sulfone and, after 60 days, to the oxygenated analog of disulfoton sulfone. The disulfoton sulfone percolated the 15 cm of the soil column, being detected in the percolation water after 40 days into the experiment, but the contents found in the water were around 1%. The oxygenated analog of disulfoton sulfone was detected after 60 days along the soil column in quantities varying from 11 to 18% of the applied dose, but was not detected in the percolation water.
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Wickramanayake, Priyanga, and s3028858@student rmit edu au. "Applications of chiral selectors and replaceable supports for capillary electrophoretic separations." RMIT University. Applied Chemistry, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080617.115607.

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The popularity of capillary electrophoresis (CE) as a separation technique has been established over the years. CE offers the advantages of high resolution, high separation efficiency, fast approaches of method development, a range of operational modes and low consumption of reagents. The strategy employed here for the development of chromatographic separations involved the utilization of experimental designs, multi-linear regression and response surface methodology to build empirical models that related the chromatographic quality to the factors influencing the separation. Separation of Nitrofuran antibiotics (NFAs) and their metabolites (NFMs) by using micellar electrokinetic capillary chromatography was successfully completed. The best conditions found to give optimum resolution from the optimization study was pH 9.0, 80 mM SDC concentration, 16 kV with running buffer consisting of 20 mM borate and 20 mM phosphate concentration using a 73 cm x 75 ƒÝm column, resulting in completely resolved NFAs and NFMs within 16 min. It is interesting that all the compounds can be reliably separated with the one mixture, and single CE condition. Whilst all antibiotics have shorter migration time than their respective derivatised metabolites, as a group apart from nitrofurantoin the antibiotics elute before the metabolites. The analytical figures of merit for CE analysis exhibited excellent reproducibility of absolute and relative migration times, and acceptable reproducibility of relative response areas. Successful separation of metabolite derivatives was achieved when the developed method was applied to a spiked prawn sample. The chiral separation of Triadimenol was successfully completed using micellar electrokinetic capillary chromatography. The best conditions found to give optimum resolution from the optimisation study were pH 6.0, 20% methanol, 50 mM SDS concentration, 18 kV with running buffer consisting of 20 mM borate and 20 mM phosphate concentration using a 64.5 cm x 50 ƒÝm column, resulted in baseline resolution of all Triadimenol isomers within 18 min. The optimised separation conditions were applied to a blank grape sample and to a spiked grape sample. No peaks were observed in the blank grape sample whereas the spiked grape sample had two diastereoismer peaks with poor detection sensitivity. Increase in detection sensitivity is necessary to determine the possibility of resolution of all the isomers of Triadimenol, in the spiked grape sample and the blank. Online preconcentration techniques were attempted to for Triadimenol isomer separation. When using online preconcentration technique of sweeping, a 30-fold increase in detection sensitivity of Triadimenol was observed compared to MEKC mode. However enantiomer separation was not possible with sulfated-£]-CD chiral selector. The best conditions were found to be pH 2.5, 50 mM SDS concentration, -20 kV with running buffer consisting of 20 mM phosphate concentration, using a 64.5 cm x 50 ƒÝm column, resulting in diastereoisomer separation within 8 min. Final stage of the project was to create stationary phase beds in capillaries and micro-channels that could be removed and re-created, thus providing a fresh stationary phase. The replaceable stationary phase (RSP) can be used as an operating mode of CE/CEC. Preparation of reversible stationary phase (RSP) inside the capillary column was successfully performed using low methoxy pectin (LMP). LMP renders a capability of reversible thermogelation. Electroosmotic flow (EOF) and sufficient hydrophobicity of LMP gel allow separation of analyates. The porosity of LMP RSP was adequate to support EOF. Successful separation with good reproducibility of areas and migration times was obtained for Caffeine, Aspartame, Benzoic acid, Saccharine (CABS) mixture and NFAs. After performing continuous analyses, the aging of RSP was observed. Temperature was the ¡¥switch¡¦, which applied to remove aged RSP. RSP was recreated for further analysis of analytes. RSP was UV transparent, capable of handling various analytes and diff erent buffer electrolytes including aqueous-organic solvents.
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Matrangolo, Paulo Fernando Rodrigues. "Avaliação da percolação do triadimenol no solo por cromatografia gasosa e cromatografia líquida de alta eficiência." Universidade Federal de Viçosa, 1998. http://www.locus.ufv.br/handle/123456789/8619.

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Fundação de Amparo à Pesquisa do Estado de Minas Gerais
Este trabalho teve como objetivos estudar a percolação do triadimenol em amostras de dois solos, coletados em locais diferentes e cultivados com o cafeeiro na microrregião de Viçosa, bem como a sua quantificação por Cromatografia Gasosa (CG) e por Cromatografia Líquida de Alta Eficiência (CLAE). A associação entre o triadimenol com o dissulfoton constitui uma mistura de um fungicida mais um inseticida utilizado na cafeicultura no combate da ferrugem e do bicho mineiro. Entretanto, são escassos os estudos envolvendo a percolação desses agroquímicos em solos cultivados com o cafeeiro. Foram coletadas amostras nas profundidades de 0 a 5 e de 5 a 20 cm para montagem das colunas de solo, utilizando-se tubos de PVC de 10 cm de diâmetro interno. No estudo da percolação foram montados sistemas de 0 a 5 e de 0 a 10 cm, onde foram aplicados 0,5 e 1,0 mL de solução-padrão de triadimenol 1.000 μg mL-1. As amostras foram submetidas a uma simulação de chuva de 60 mm. A água que percolou os sistemas foi coletada, o pesticida extraído e, em seguida, realizada a etapa de clean up. Os extratos obtidos foram então quantificados por CG e por CLAE. A fase móvel empregada na quantificação do triadimenol por CLAE realizou-se previamente por Cromatografia em Camada Delgada (CCD). Os melhores resultados foram obtidos com uma mistura de diclorometano:acetato de etila 3:7, com um fluxo de fase móvel de 0,6 mL min-1 e tempo de retenção de 10 min para o composto. O limite de detecção do triadimenol foi de 0,01 ng mL-1 para CLAE e de 0,1 ng mL-1 para CG. Testes para verificação do limite de detecção do composto foram realizados por meio de injeções sucessivas, em diferentes concentrações do padrão de triadimenol em acetato de etila, obtendo-se o limite de detecção de 0,01 ng mL-1 para CLAE e de 0,01 μg mL-1 para CG. Testes de recuperação, após extração de amostras de água deionizada fortificadas com 2 μg mL-1 de triadimenol, apresentaram rendimento de extração de 91,34%. Mediante aplicação de 0,5 e 1,0 mL de uma solução padrão 1.000 μg mL-1 de triadimenol, em colunas de solo de 5,0, cm encontraram-se valores inferiores a 1% de princípio ativo nos dois solos estudados, tanto por CLAE como por CG. Nas amostras de água que percolaram as colunas de solo de 10 cm não se detectou presença do princípio ativo triadimenol. Estes resultados mostram que dificilmente esse princípio ativo irá contaminar os lençóis freáticos. Quando comparadas as técnicas de quantificação, CLAE e CG, pode-se verificar que, para as amostras de água, a CLAE apresentou resultados muito próximos aos obtidos por CG na análise do triadimenol.
This work had the aim to study triadimenol percolation in samples from two soils, collected in different locations and cultivated with coffee, at the Micro Region of Viçosa and also the quantification by gas chromatography (GC) and high performance liquid chromatography (HPLC). The association between triadimenol and dissulfoton is a mixture of a fungicide plus an insecticide commonly used against coffee rust and leafminers. Therefore studies involving the percolation of those agrochemicals on cultivated soils are scarce. Soil samples were harvested from two different layers: 0 to 5 cm and 5 to 20 cm. The soil was used to pack PVC columns with 10 cm of internal diameter. On the percolation studies, a 0 to 5 cm and a 0 to 10 cm systems were built and 0.5 and 1.0 mL of a standard triadimenol solution (1000 μg mL-1) were applied. The samples were submitted to a 60 mm rain simulation. The drained water was collected, the pesticide extracted and a clean-up step was performed. The extracts obtained were quantified by GC and HPLC. The mobile phase used at the HPLC was previously determined by Thin Layer Chromatography (TLC). The best results were obtained using a mixture of dichloromethane: ethyl acetate 3:7, with a mobile phase with a flux of 0.6 mL min-1) with a retention time of 10 minutes for the compound. The detection limit for triadimenol was 0.01 ng mL-1 for HPLC and 0.1 ng mL-1 for GC. The analyses detection limits were performed through successive injections of the standard solution of triadimenol dissolved in ethyl acetate at different concentrations, obtaining the detection limits of 0.01 ng mL-1 for HPLC and 0.01 μg mL-1 for GC. Recovering tests, after sample extractions using de-ionized water with 2 μg mL-1 of triadimenol, showed a extraction efficiency of 91.34%. When 0.5 and 1.0 mL of a standard solution of 1000 μg mL-1 was applied into a 5 cm soil column, less than 1% of the active principle was detected, either by HPLC or GC. Within the water samples that drained from 10 cm columns, the presence of the active principle triadimenol was not detected. These results show that, the chances of occurring a contamination of the water table with this active principle are very small. When compared, the quantification techniques, HPLC and GC, one can verify that, for water samples, HPLC showed results similar to that obtained for GC on the triadimenol analysis.
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Oliveira, Ana Maria de. "Resíduos de triadimenol e dissulfoton no solo e em folhas e frutos do cafeeiro após aplicação de uma formulação granulada." Universidade Federal de Viçosa, 1998. http://www.locus.ufv.br/handle/123456789/8645.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico
Os agrotóxicos têm sido largamente utilizados na agricultura para o controle de doenças, de pragas e plantas daninhas. Entretanto, o uso abusivo tem causado alguns problemas como a contaminação do meio ambiente e a intoxicação de aplicadores. Com o objetivo de verificar a persistência da formulação triadimenol + dissulfoton no solo e em folhas de cafeeiro e sua possível presença no grão, foram otimizados métodos de análise simultânea desses produtos. As amostragens foram realizadas ao longo de 190 dias na região de Viçosa, e após 270 dias da última aplicação, na região de Manhuaçu, tradicional região produtora de café. Nesses períodos, a presença de resíduos de triadimenol, dissulfoton e seus metabólitos foi monitorada em amostras de solo, folhas e grãos de café. Os testes de recuperação mostraram a eficiência da determinação simultânea de triadimenol + dissulfoton, bem como de seus produtos de degradação em solos, folhas e grãos de café. Os resultados mostraram que tanto o triadimenol como os produtos de degradação do dissulfoton permanecem em solos e folhas de café por mais de 189 dias em cafezais na região de Viçosa e por mais de 270 dias na região de Manhuaçu. Observou-se também que houve predominância no solo da forma dissulfoton sulfona total, enquanto que na folha houve predominância de dissulfoton sulfona oxigênio análogo total. Outro fato que foi observado é a concentração relativamente alta de triadimenol nas folhas de café coletadas em Manhuaçu. Verificou-se também a presença em baixas concentrações, de triadimenol e dissulfoton sulfona total no grão do café seco.
Pesticides have been widely used in agriculture to control plant diseases, pest and weeds. However, its abusive use has caused serious problems such as environmental contamination and worker intoxication. In order to verify the persistence of triadimenol + disulfoton formulation in soil and in coffee leaves as well as its possible presence in coffee beans, methods of simultaneously analyzing these compounds were optimized: samples were collected during 190 days in the region of Viçosa and during 270 days after the last application in Manhuaçu, a traditional coffee-producing region. During these periods, the presence of residues of triadimenol, disulfoton and their metabolites was monitored in soil, coffee leaf and seed samples. Recovery tests showed the effectiveness of simultaneous determination of triadimenol + disulfoton as well as of their degration products in soil, coffee leaves and seeds. Results showed that both triadimenol and disulfoton ́s degradation products remained in soil and in coffee leaves for over 189 days in coffee plantations in Viçosa and over 270 days in the Manhuaçu region. It was also observed that there was a predominance of total disulfoton in soil, whereas there was a predominance of total analogous oxygen sulphone disulfoton in the leaves. Besides, concentration of triadimenol in coffee leaves collected in the region of Manhuaçu was found to be relatively high. Triadimenol and total sulphone disulfoton were found in low concentrations in dried coffe beans.
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Paredes, Zúñiga Susana Carolina. "Behavioral and physiological effects of triadimefon in zebrafish are associated with alterations of the dopaminergic and serotonergic pathways." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/168720.

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Tesis entregada a la Universidad de Chile en cumplimiento parcial de los requisitos para optar al grado de Magíster en Ciencias Biológicas mención Biología Celular, Molecular y Neurociencias
CONICYT beca de maestría (# 333265).
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Colcol, Jeneylyne Ferrera. "Fungicide Sensitivity of Erysiphe necator and Plasmopara viticola from Virginia and nearby states." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/34561.

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This study was undertaken to determine the sensitivity of grape downy mildew (DM, Plasmopara viticola) and powdery mildew (PM, Erysiphe necator) to commonly used single-site fungicides in Virginia and nearby states. DM and PM isolates were collected from 2005 to 2007. In grape leaf disc bioassays, 92% of the DM isolates were QoI (azoxystrobin)-resistant, but none were resistant to mefenoxam. Eighty-two percent of the PM isolates were QoI-resistant, but none were resistant to boscalid and quinoxyfen. The frequency of the G143A point mutation, which confers high levels of QoI resistance, was quantified in DM and PM isolates by real-time PCR. Most of the QoI-resistant DM and PM isolates contained >95% of the 143A allele. QoI-sensitive DM isolates contained less than 1% of 143A. One out of 145 and 14 out of 154 QoI-resistant DM and PM isolates (able to grow on azoxystrobin concentration ï ³ 1 µg/ml), respectively, contained less than 1% 143A. Most PM isolates exhibited reduced sensitivity to five DMI fungicides when compared to a sensitive subgroup (n=9) and compared to published reports for unexposed populations; the resistance factor (median EC50 of the entire isolate collection divided by median EC50 of sensitive subgroup) was highest for tebuconazole (360) and myclobutanil (350), followed by triflumizole (79), triadimefon (61), and fenarimol (53). Sensitivities to all five DMI fungicides, but also azoxystrobin, were moderately to strongly correlated (pairwise r-values ranging from 0.60 to 0.88).
Master of Science in Life Sciences
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7

Crowell, Susan Ritger. "Integration of experimental and computational approaches to physiologically based pharmacokinetic modeling of triadimefon and triadimenol." 2009. http://purl.galileo.usg.edu/uga%5Fetd/crowell%5Fsusan%5Fr%5F200912%5Fphd.

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8

How, Chun Ming, and 侯俊銘. "Prolonged exposure to triadimenol at environmentally relevant concentration accelerates aging process in Caenorhabditis elegans via DAF-16." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/44350993906483388877.

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碩士
國立臺灣大學
生物環境系統工程學研究所
104
Triadimenol is a widely used agricultural antifungal which is commonly detected in the environment due to its stable property. Triadimenol is able to disrupt genomic stability and modulate function of several transcription factors, yet the prolonged exposure of triadimenol and its age-related toxicity effects remain elucidated. This study utilized Caenorhabditis elegans (C. elegans) to study the toxicity of triadimenol on aging and the underlying mechanisms. The results showed that 0.1 % ETOH (ethanol) as solvent control did not affect the locomotive behaviors, reproduction, and growth in C. elegans. Therefore, 0.1 % ETOH was used as control throughout this study. Triadimenol at environmentally relevant concentrations (3, 30, 300 μg/L) significantly affected worm’s growth, and reduced the total brood size at 30 and 300 μg/L. Additionally, prolonged exposure to 3, 30, 300 μg/L triadimenol significantly inhibited locomotive behaviors of C. elegans in a dose-dependent manner. Moreover, under the most effective concentration, 300 μg/L triadimenol reduced C. elegans mean (17.3 days), median (18 days), and maximum (29 days) lifespan at 15, 15, 25 days, respectively. Further evidence showed that triadimenol (300 μg/L) accelerated the decline in pharyngeal pumping rate and the increase in defecation cycles, implying physiological aging. In addition, triadimenol (300 μg/L) significantly increased lipofuscin accumulation in day- 4, 8 adulthood, but did not significantly increase lipid peroxidation until day 8 adulthood. Similarly, triadimenol (300 μg/L) did not significantly elevate internal ROS (reactive oxidative species) levels such as H2O2 and O2•‒ until day 8 adulthood. By using the transgenic GFP strains, we found that triadimenol (300 μg/L) triggered DAF-16 translocation from cytosol into nucleus in C. elegans, suggesting that triadimenol exerted oxidative stress on C. elegans. In contrast, triadimenol did not affect SKN-1 translocation, suggesting that triadimenol toxicity in C. elegans is not SKN-1 mediated. In conclusion, this study demonstrated that prolonged exposure to triadimenol at environmentally relevant concentration resulted in oxidative stress and accelerated aging process in C. elegans via DAF-16.
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9

Chen, Wan-Yi, and 陳琬鎰. "The effects of propiconazole and triadimefon on larval honey bees (Apis mellifera) growth and foraging learning ability." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/46713779527596835873.

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10

Lin, Chun-Hung, and 林均鴻. "Triadimefon and Myclubutanil Interfere the Activity of Cytochrome P450s and mRNA Expression of All-trans Retinoic Acid-Related Genes in the Liver of Medaka (Oryzias latipes)." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/72899597493067854523.

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碩士
國立臺灣大學
農業化學研究所
99
Triadimefon and myclobutanil are triazole-containing conazole fungicides widely used in agriculture. Previous studies show that some conazoles (e.g. triadimefon) at sublethal dose induced gene expression and enzymatic activity of cytochrome P450s (CYPs) in the liver of mouse, leading to a decrease in hepatic level of all-trans retinoic acid (atRA), an active form of vitamin A with anticancer properties. This study demonstrates the effects of carcinogenic triadimefon and non-carcinogenic myclobutanil on the activity of CYPs and mRNA expression of atRA-related genes in the liver of an aquatic organism, medaka (Oryzias latipes). Enzymatic activity analyses show triadimefon (2.0-3.5 μM) induced the activities of CYP1A and CYP3A, while myclobutanil (2.0-3.5 μM) only induced the activity of CYP3A. Quantitative real-time PCR analyses revealed that only triadimefon (2.0-5.0 μM) induced mRNA expression of endogenous atRA metabolism enzyme CYP26B1. Results from both enzymatic and genetic analyses above indicating that triadimefon may enhance hepatic atRA metabolism more severely than myclubutanil could do. Gene expression of atRA-related nuclear receptors retinoid X receptors (rxrα1 and rxrβ1) was depressed by both triadimefon and myclobutanil, indicating that both conazoles may interrupt the ability of cell to sense atRA and leading to disruption of atRA-regulated mechanisms. Overall, both triadimefon and myclobutanil interfere with the activity of cytochrome P450s and mRNA expression of all-trans retinoic acid-related genes in the liver of medaka.
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Books on the topic "Triadimenol"

1

Marx, Donald H. Triadimefon and Pisolithus ectomycorrhizae affect second-year field performance of loblolly pine. [Asheville, N.C.]: U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987.

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Marx, Donald H. Triadimefon and Pisolithus ectomycorrhizae affect second-year field performance of loblolly pine. [Asheville, N.C.]: U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987.

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Marx, Donald H. Triadimefon affects Pisolithus ectomycorrhizal development, fusiform rust, and growth of loblolly and slash pines in nurseries. Asheville, N.C: U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987.

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Book chapters on the topic "Triadimenol"

1

Unger, Thomas A. "Triadimenol." In Pesticide Synthesis Handbook, 723. Elsevier, 1996. http://dx.doi.org/10.1016/b978-081551401-5.50549-9.

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2

Howard, Marcia D. "Triadimefon*." In Encyclopedia of Toxicology, 375–77. Elsevier, 2005. http://dx.doi.org/10.1016/b0-12-369400-0/00982-0.

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Unger, Thomas A. "Triadimefon." In Pesticide Synthesis Handbook, 722. Elsevier, 1996. http://dx.doi.org/10.1016/b978-081551401-5.50548-7.

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Moser, V. C. "Triadimefon." In Encyclopedia of Toxicology, 807–9. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-386454-3.00203-7.

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Conference papers on the topic "Triadimenol"

1

Iyer, Vidya V., Ioannis P. Androulakis, Charles M. Roth, and Marianthi G. Ierapetritou. "Effects of Triadimefon on the Metabolism of Cultured Hepatocytes." In 2010 IEEE International Conference on BioInformatics and BioEngineering. IEEE, 2010. http://dx.doi.org/10.1109/bibe.2010.28.

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Wang, Qiang, Xiaohong Gu, and Lanyu Li. "The terahertz spectroscopic investigation and vibration analysis of triadimefon." In SPIE Commercial + Scientific Sensing and Imaging, edited by Mehdi F. Anwar, Thomas W. Crowe, and Tariq Manzur. SPIE, 2016. http://dx.doi.org/10.1117/12.2230724.

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Liu, Shaoying, Juhua Chang, and Guonian Zhu. "Developmental Toxicity of Triadimefon in Embryo-Larval Stages of Zebrafish." In 2010 International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2010. http://dx.doi.org/10.1109/icdma.2010.347.

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