Penthiopyrad - CAS 183675-82-3
Catalog number: 183675-82-3
Category: Inhibitor
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Molecular Formula:
Molecular Weight:
Penthiopyrad is a novel fungicide used in the protection of crops.
MTF-753; MTF 753; MTF753
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1.Molecular characterization of boscalid- and penthiopyrad-resistant isolates of Didymella bryoniae and assessment of their sensitivity to fluopyram.
Avenot HF1, Thomas A, Gitaitis RD, Langston DB Jr, Stevenson KL. Pest Manag Sci. 2012 Apr;68(4):645-51. doi: 10.1002/ps.2311. Epub 2011 Nov 10.
BACKGROUND: Didymella bryoniae has a history of developing resistance to single-site fungicides. A recent example is with the succinate-dehydrogenase-inhibiting fungicide (SDHI) boscalid. In laboratory assays, out of 103 isolates of this fungus, 82 and seven were found to be very highly resistant (B(VHR) ) and highly resistant (B(HR) ) to boscalid respectively. Cross-resistance studies with the new SDHI penthiopyrad showed that the B(VHR) isolates were only highly resistant to penthiopyrad (B(VHR) -P(HR) ), while the B(HR) isolates appeared sensitive to penthiopyrad (B(HR) -P(S) ). In this study, the molecular mechanism of resistance in these two phenotypes (B(VHR) -P(HR) and B(HR) -P(S) ) was elucidated, and their sensitivity to the new SDHI fluopyram was assessed.
2.Determination of succinate-dehydrogenase-inhibitor fungicide residues in fruits and vegetables by liquid chromatography-tandem mass spectrometry.
Abad-Fuentes A1, Ceballos-Alcantarilla E, Mercader JV, Agulló C, Abad-Somovilla A, Esteve-Turrillas FA. Anal Bioanal Chem. 2015 May;407(14):4207-11. doi: 10.1007/s00216-015-8608-3. Epub 2015 Mar 22.
In recent years, a second generation of succinate-dehydrogenase-inhibitor (SDHI) fungicides has been introduced into the market for effective treatment of fruit and vegetable crops, with fluxapyroxad, boscalid, fluopyram, penflufen, bixafen, penthiopyrad, and isopyrazam being some of the members of this new class of agrochemical. We herein report the development of an analytical procedure for the determination of residues of these SDHI fungicides in food samples, based on a modification of the QuEChERS extraction method followed by ultra-performance liquid chromatography coupled to tandem-mass-spectrometry determination. The proposed method reached limits of detection from 0.8 to 2.0 μg L(-1). Apple, strawberry, tomato, and spinach samples were used as model samples. Spiked samples, from 10 to 1000 μg kg(-1), were analysed by the proposed method and quantitative recoveries were obtained (from 81 to 115 % for apples, from 84 to 136 % for strawberries, from 84 to 135 % for tomatoes, and from 80 to 136 % for spinach), with precision better than 20 % in all cases.
3.Efficacy of SDHI fungicides including benzovindiflupyr against Colletotrichum species.
Ishii H1,2,3, Zhen F2, Hu M2, Li X2, Schnabel G2. Pest Manag Sci. 2016 Jan 6. doi: 10.1002/ps.4216. [Epub ahead of print]
BACKGROUND: Colletotrichum species cause anthracnose diseases on many plants and crops. A new generation of succinate dehydrogenase inhibitors (SDHIs) was developed recently. The inhibitory activity of the five SDHI fungicides against Colletotrichum species was determined in this study.
4.Detection of Zymoseptoria tritici SDHI insensitive field isolates carrying the SdhC-H152R and SdhD-R47W substitutions.
Dooley H1,2, Shaw MW2, Mehenni-Ciz J1, Spink J1, Kildea S1. Pest Manag Sci. 2016 Mar 4. doi: 10.1002/ps.4269. [Epub ahead of print]
BACKGROUND: Succinate dehydrogenase inhibitor fungicides are important in the management of Zymoseptoria tritici in wheat. New active ingredients from this group of fungicides have been introduced recently and are widely used. Because the fungicides act at a single enzyme site, resistance development in Z. tritici is classified as medium-to-high risk.
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CAS 183675-82-3 Penthiopyrad

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