Sterol Biosynthesis Inhibitors

Kück, Karl‐Heinz; Stenzel, K.; Vors, Jean‐Pierre

doi:10.1002/9783527644179.ch19

Cited by 30 publications

(27 citation statements)

References 44 publications

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“…The QoI fungicides affect both spore germination and fungal penetration into the host′s tissues and these are both detrimental against fungal infection (Bartlett et al., ). On the other hand, the DMI fungicides affect the growth of fungal hyphae on host′s tissues (Kuck, Stenzel, & Vors, ). According to Cruz et al.…”

Section: Discussionmentioning

confidence: 99%

Leaf gas exchange and chlorophyll a fluorescence in soybean leaves infected by Phakopsora pachyrhizi

Rios

Aucique‐Pérez

et al. 2017

Journal of Phytopathology

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Asian soybean rust (ASR), caused by Phakopsora pachyrhizi, is one of the most important foliar diseases affecting soybean production worldwide. This study aimed to investigate the photosynthetic performance (leaf gas exchange, chlorophyll (Chl) a fluorescence images and photosynthetic pigment pools) of soybean plants sprayed with Acibenzolar‐S‐Methyl (ASM) and the fungicide epoxiconazole + pyraclostrobin (Epo+Pyr) and further inoculated with P. pachyrhizi. The ASR symptoms progressed much faster on the leaves of plants from the control treatment (water spray) in comparison with the ASM and Epo+Pyr treatments. In general, the values for the leaf gas exchange parameters net carbon assimilation rate (A), stomatal conductance to water vapour (gs), internal CO2 concentration (Ci) and transpiration rate (E) increased for the infected plants sprayed with ASM or Epo+Pyr in comparison with plants from the control treatment. The values for the initial fluorescence (Fo), maximal fluorescence (Fm), maximal photosystem II quantum efficiency (Fv/Fm), effective photosystem II quantum yield (Y(II)) and quantum yield of regulated energy dissipation (Y(NPQ)) were consistently higher for the ASM and Epo+Pyr treatments in comparison with the control treatment at advanced stages of fungal infection. By contrast, the values for quantum yield of non‐regulated energy dissipation (Y(NO) were significantly lower for the ASM and Epo+Pyr treatments. The concentrations of total Chl a+b and carotenoids significantly increased for infected plants sprayed with ASM and Epo+Pyr in comparison with plants from the control treatment. The results of this study demonstrated that the spray of soybean plants with either ASM or Epo+Pyr contributed to reduce the negative effect of ASR on the photosynthesis of soybean plants.

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Section: Discussionmentioning

confidence: 99%

Leaf gas exchange and chlorophyll a fluorescence in soybean leaves infected by Phakopsora pachyrhizi

Rios

Aucique‐Pérez

et al. 2017

Journal of Phytopathology

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“…Our work shows that resistance development to medical azoles through exposure in the environment is a plausible route. It has been suggested that the development of resistance in agricultural environments is less likely than in medical environments due to the 10 to 100 fold lower concentrations of azoles used in agriculture in comparison to medical environments Kuck 2012). This exposure to low concentrations does not limit the emergence of resistance: our results show that even with azole concentrations as low as 1 µg/ml up strains resistant to 40 fold higher concentrations can emerge.…”

Section: Discussionmentioning

confidence: 45%

On the evolution of azole resistance in Aspergillus fumigatus

Zhang

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“…None are launched as enantiomerically enriched or pure enantiomers because both effects that can be attributed to each stereoisomer (fungicidal and plant growth regulation effects) are desirable . All demethylase inhibitors block a specific cytochrome P 450 enzyme, responsible for oxidative C 14 ‐demethylation of the intermediate C 24 ‐methylenedihydrolanosterol in the sterol biosynthesis pathway of agricultural pathogens . Recently, the registration process has been started for a new racemic biphenyl ether‐like triazole fungicide mefentrifluconazole (Fig.…”

Section: Fungicidesmentioning

confidence: 99%

Current status of chirality in agrochemicals

Jeschke

2018

Pest Management Science

153

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The agrochemical industry is searching continuously for new pesticides to develop products that have optimal efficacy, lower application rates in the field, increased selectivity, favourable toxicological and environmental safety, enhanced user friendliness and better economic viability. One strategy by which to achieve these ambitious goals makes use of the unique properties of molecules containing asymmetric centres. In the past, many natural products and their congeners have been a source of inspiration in the design of new active ingredients, and the molecular structures of the resulting compounds have become increasingly complex; some 30% contain fragments with asymmetric centres. However, despite enormous progress in catalytic asymmetric processes over the past decade, few agrochemicals are produced in an enantiomerically pure or enriched form on an industrial scale. Since 2007, ∼ 43% of the 44 products launched (insecticides, acaricides, fungicides, nematicides and herbicides) contain one or more asymmetric centres in the molecule (∼ 47%) and most have been launched as racemic mixtures of enantiomers or diastereomers. This review provides an overview of the current status of chiral agrochemicals launched over the past 10 years and describes the inherently connected challenges of modern agricultural chemistry by managing important aspects resulting from the stereochemistry of these innovative products. © 2018 Society of Chemical Industry.

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Sterol Biosynthesis Inhibitors

Cited by 30 publications

References 44 publications

Leaf gas exchange and chlorophyll a fluorescence in soybean leaves infected by Phakopsora pachyrhizi

Leaf gas exchange and chlorophyll a fluorescence in soybean leaves infected by Phakopsora pachyrhizi

On the evolution of azole resistance in Aspergillus fumigatus

Current status of chirality in agrochemicals

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