Understanding the strobilurin fungicides

Bartett, Dave W.; Clough, James R.; Godfrey, C.R.A.; Godwin, Jeremy; Hall, Alison; Heaney, S. P.; Maund, Stephen J.

doi:10.1039/b106300f

Cited by 98 publications

(80 citation statements)

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“…Tal fato pode ser explicado pela alta fungitoxicidade e consideráveis níveis de ação protetora, curativa, antiesporulante e resistência à chuva apresentados por esses fungicidas (Bartlett et al, 2001;Töfoli et al, 2005;Töfoli et al, 2012b;Töfoli et al, 2014b).…”

Section: Resultsunclassified

“…Tal fato pode ser explicado pela alta fungitoxicidade e diferentes níveis de atividade sistêmica que essas apresentam (Bartlett et al, 2001). Destaca-se, ainda, que o aumento da ação residual e resistência à chuva observada para essas misturas em outros estudos não influenciaram diretamente o controle da pinta preta no campo (Töfoli et al, 2012b;Töfoli et al 2014b).…”

Section: Resultsunclassified

“…As estrobilurinas azoxistrobina, trifloxistrobina, piraclostrobina e picoxistrobina são fungicidas que apresentam excelente ação preventiva, curativa e antiesporulante. Desenvolvidas a partir de compostos naturais, apresentam diferentes níveis de sistemicidade, perfil agroecotoxicológico favorável e eficácia comprovada sobre o gênero Alternaria (Bartlett et al, 2001).…”

Section: Resultsunclassified

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Controle da requeima e pinta preta da batata por fungicidas e seu reflexo sobre a produtividade e a qualidade de tubérculos

et al. 2016

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RESUMO: A requeima (Phytophthora infestans) e a pinta preta (Alternaria solani) estão entre as doenças mais frequentes e destrutivas da cultura da batata. Com o objetivo de avaliar a ação de diferentes grupos fungicidas no controle dessas doenças, foram realizados dois experimentos em cultivo comercial de batata (cultivares Agata e Monalisa), localizados em Pilar do Sul, São Paulo, nas safras 2008 e 2009. O delineamento experimental utilizado foi o de blocos ao acaso, com 4 repetições, sendo cada parcela de 20 m2. As aplicações foram realizadas com um pulverizador costal, munido de barra de aplicação e pressão constante de 3 Bar. O volume de aplicação variou de 300 a 500 L.ha-1 em função do desenvolvimento da cultura. As variáveis avaliadas para as duas doenças foram: severidade em folhas, área abaixo da curva de progresso da doença (AACPD), produtividade total e comercial, e classificação de tubérculos. Os menores níveis de doença e aumentos significativos na produtividade comercial e qualidade de tubérculos foram observados nas parcelas tratadas com fluopicolide + propamocarbe, dimetomorfe + ametoctradina, mandipropamida + clorotalonil, mandipropamida, fenamidona + propamocarbe, bentiavalicarbe + fluazinam, seguidos de dimetomorfe + clorotalonil, mefenoxam + clorotalonil e famoxadona + cimoxanil + mancozebe para requeima, e azoxistrobina + difenoconazol, picoxistrobina, piraclostrobina + metconazol, trifloxistrobina + tebuconazol, azoxistrobina, boscalida + piraclostrobina, iprodiona + pirimetanil e ciprodinil para pinta preta.

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Section: Resultsunclassified

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Controle da requeima e pinta preta da batata por fungicidas e seu reflexo sobre a produtividade e a qualidade de tubérculos

et al. 2016

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“…In fungi, strobilurins inhibit mitochondrial respiration by blocking electron transfer in complex III (complex bc1) of the mitochondrial electron transport chain [11]. In plants, the bc1 complex is also present in mitochondria, so at least partial inhibition of this complex should be expected after fungicide absorption.…”

Section: Introductionmentioning

confidence: 99%

Insights into the Positive Effect of Pyraclostrobin on Sugarcane Productivity

et al. 2018

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Achieving high yields is a challenge for sugarcane producers due to the diverse environmental conditions to which the crop is subjected. In tropical and subtropical regions, where sugarcane is typically cultivated, crop diseases are common. This necessitates the development of disease management techniques. Among these techniques, chemical control is of particular significance due to the development of new antifungal agents, such as pyraclostrobin. For some crops, pyraclostrobin has a positive influence on yield due to its effects on plant physiology. The aim of this study was to evaluate the physiological responses and yield of three sugarcane cultivars treated with the fungicide, pyraclostrobin. The experiment was performed in a randomized block design (RBD) with a split-plot arrangement; the variables analyzed were the application or non-application of fungicide in the plots and, in the subplots, the evaluation times after fungicide application. Both the rate of photosynthesis and the antioxidant enzyme (Superoxide Dismutase, Catalase and Ascorbate Peroxidades) activity increased in plants treated with fungicide in comparison to untreated plants, and in the RB855156 cultivar the stomatal conductance, transpiration, and nocturnal respiratory rate were increased. Furthermore, application of pyraclostrobin increased stalk yield and the green biomass index in the RB855156 and RB86751 sugarcane cultivars. In certain cultivars of sugarcane, application of pyraclostrobin leads to an increased yield.

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“…It discovered and developed as Acanto by Zeneca Agrochemicals (now Syngenta) in 2002 4) . It blocks the electron transport between cytochrom b and cytochrom c1, which causes inhibition of ATP formation and mitochondrial respiration 4,5) . Picoxystrobin was approved in the European Union (EU) in 2003 6) and it has been registered at the U.S. Environmental Protection Agency (EPA) as a new chemical candidate 7) .…”

Section: Introductionmentioning

confidence: 99%

Development and Validation of Analytical Methods for Picoxystrobin Determination in Agricultural Products by GC-ECD and GC-MS

Ah¹,

Lee²,

Park³

et al. 2012

Journal of Food Hygiene and Safety

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-A simple and sensitive analytical method was developed using gas chromatography with electron capture detector (GC-ECD) and gas chromatography-mass spectrometry (GC-MS) for determination of Picoxystrobin in agricultural products (apple, hulled rice, mushroom, pepper, soybean, and mandarin). Picoxystrobin residues were extracted with acetonitrile, partitioned with saline water, and then they were cleaned up on a florisil solid-phase extraction (SPE) cartridge to obtain an extract suitable for analysis by GC-ECD and GC-MS. The method was validated using 6 agricultural product samples spiked with Picoxystrobin at different concentration levels (0.02, 0.05 and 0.5 mg/L). Average recoveries of Picoxystrobin (using each concentration three replicates) ranged 64.0~98.3% with relative standard deviations less than 10%, calibration solutions concentration in the range 0.1~5 mg/L, and limit of detection (LOD) and limit of quantification (LOQ) were 0.005 and 0.02 mg/L, respectively. The result showed that the developed analytical method is suitable for Picoxystrobin determination in agricultural products.

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Understanding the strobilurin fungicides

Cited by 98 publications

References 1 publication

Controle da requeima e pinta preta da batata por fungicidas e seu reflexo sobre a produtividade e a qualidade de tubérculos

Controle da requeima e pinta preta da batata por fungicidas e seu reflexo sobre a produtividade e a qualidade de tubérculos

Insights into the Positive Effect of Pyraclostrobin on Sugarcane Productivity

Development and Validation of Analytical Methods for Picoxystrobin Determination in Agricultural Products by GC-ECD and GC-MS

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