Recent advances in the natural products-based lead discovery for new agrochemicals

Advanced Agrochem, Journal Year: 2023, Volume and Issue: 2(4), P. 324 - 339

Published: Sept. 22, 2023

Crops will be harmed by fungi, pests and weeds during their growth. In the past half century, scientists have conducted in-depth research on natural products extracted from microorganisms, plants or animals, used derivatives as lead for pesticides discovery. Natural product advantages of easy degradation in environment, selective control safety to non-target organisms. This review summarizes studies recent years, including chemical modification biosynthesis, mainly fungicides, herbicides, insecticides acaricides. We classify according active fragments, discuss effects agricultural weeds. Ultimately, we found that discovery based has great pesticide development.

Language: Английский

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Insecticidal activity of essential oils from American native plants against Aedes aegypti (Diptera: Culicidae): an introduction to their possible mechanism of action

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Feb. 20, 2023

Abstract Searching for new bioactive molecules to design insecticides is a complex process since pesticides should be highly selective, active against the vector, and bio-safe humans. Aiming find natural compounds mosquito control, we evaluated insecticidal activity of essential oils (EOs) from 20 American native plants Aedes aegypti larvae using bioassay, biochemical, in silico analyses. The highest larvicide was exhibited by EOs Steiractinia aspera (LC 50 = 42.4 µg/mL), Turnera diffusa 70.9 Piper aduncum 55.8 Lippia origanoides (chemotype thymol/carvacrol) 61.9 L. carvacrol/thymol) 59.8 Hyptis dilatata 61.1 Elaphandra quinquenervis Calycolpus moritzianus 73.29 µg/mL) after 24 h. This biological may related disruption electron transport chain through mitochondrial protein complexes. We hypothesized that observed EOs' effect due their major components, where computational approaches such as homology modeling molecular docking suggest possible binding pose secondary metabolites inhibit enzymes acetylcholinesterase (AChE). Our results provided insights into mechanism action insecticide designs targeting mitochondria AChE A. effective safe insecticide.

Language: Английский

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Revisiting pesticide pollution: The case of fluorinated pesticides

Environmental Pollution, Journal Year: 2021, Volume and Issue: 292, P. 118315 - 118315

Published: Oct. 9, 2021

Language: Английский

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Identification and Characterization of Glutathione S-transferase Genes in Spodoptera frugiperda (Lepidoptera: Noctuidae) under Insecticides Stress

Toxics, Journal Year: 2023, Volume and Issue: 11(6), P. 542 - 542

Published: June 19, 2023

Insect glutathione S-transferases (GSTs) serve critical roles in insecticides and other forms of xenobiotic chemical detoxification. The fall armyworm, Spodoptera frugiperda (J. E. Smith), is a major agricultural pest several countries, especially Egypt. This the first study to identify characterize GST genes S. under insecticidal stress. present work evaluated toxicity emamectin benzoate (EBZ) chlorantraniliprole (CHP) against third-instar larvae using leaf disk method. LC50 values EBZ CHP were 0.029 1.250 mg/L after 24 h exposure. Moreover, we identified 31 genes, including 28 cytosolic 3 microsomal SfGSTs from transcriptome analysis genome data frugiperda. Depending on phylogenetic analysis, sfGSTs divided into six classes (delta, epsilon, omega, sigma, theta, microsomal). Furthermore, investigated mRNA levels qRT-PCR stress Interestingly, SfGSTe10 SfGSTe13 stood out with highest expression treatments. Finally, molecular docking model was constructed between most upregulated (SfGSTe10 SfGSTe13) least (SfGSTs1 SfGSTe2) larvae. showed have high binding affinity SfGSTe10, energy -24.41 -26.72 kcal/mol, respectively, sfGSTe13, -26.85 -26.78 respectively. Our findings are important for understanding role GSTs regarding detoxification processes CHP.

Language: Английский

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New strategies for evaluating imidacloprid-induced biological consequences targeted to Eisenia fetida species and the corresponding mechanisms of its toxicity

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 349, P. 119456 - 119456

Published: Oct. 27, 2023

Language: Английский

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Novel Butenolide Derivatives as Dual-Chitinase Inhibitors to Arrest the Growth and Development of the Asian Corn Borer

Journal of Agricultural and Food Chemistry, Journal Year: 2024, Volume and Issue: 72(9), P. 5036 - 5046

Published: Feb. 20, 2024

OfChtI and OfChi-h are considered potential targets for the control of Asian corn borer (Ostrinia furnacalis). In this work, previously reported inhibitor 5f was found to show certain inhibitory activity against (Ki = 5.81 μM). Two series novel butenolide derivatives based on lead compound were designed with conjugate skeleton, contributing π-binding interaction chitinase, then synthesized. Compounds 4a–l 7a–p displayed excellent activities OfChi-h, respectively, at a concentration 10 μM. Compound 4h be good dual-Chitinase inhibitor, Ki values 1.82 2.00 μM respectively. The mechanism studies by molecular docking suggested that π–π stacking interactions crucial two different chitinases. A preliminary bioassay indicated exhibited growth inhibition effects O. furnacalis. Butenolide-like analogues should further studied as promising dual-chitinase candidates

Language: Английский

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Design, Synthesis, in vitro and in silico Characterization of 2‐Quinolone‐L‐alaninate‐1,2,3‐triazoles as Antimicrobial Agents

ChemMedChem, Journal Year: 2022, Volume and Issue: 17(5)

Published: Jan. 3, 2022

Due to the ever-increasing antimicrobial resistance there is an urgent need continuously design and develop novel agents. Inspired by broad antibacterial activities of various heterocyclic compounds such as 2-quinolone derivatives, we designed synthesized new methyl-(2-oxo-1,2-dihydroquinolin-4-yl)-L-alaninate-1,2,3-triazole derivatives via 1,3-dipolar cycloaddition reaction 1-propargyl-2-quinolone-L-alaninate with appropriate azide groups. The were obtained in good yield ranging from 75 80 %. chemical structures these hybrid molecules determined spectroscopic methods activity was investigated against both bacterial fungal strains. tested showed significant weak moderate antifungal activity. Despite evident similarity quinolone moiety our fluoroquinolones, do not function inhibiting DNA gyrase. Computational characterization shows that they have attractive physicochemical pharmacokinetic properties could serve templates for developing potential agents clinical use.

Language: Английский

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Target-Based Design, Synthesis, and Biological Evaluation of Novel 1,2,4-Triazolone Derivatives as Potential nAChR Modulators

Journal of Agricultural and Food Chemistry, Journal Year: 2023, Volume and Issue: 71(49), P. 19333 - 19342

Published: Dec. 5, 2023

Novel agrochemicals have been successfully developed using target-based drug design (TBDD). To discover a novel, efficient, and highly selective nicotinic insecticide candidate, we unified pharmacological model TBDD by studying the binding modes of 11 acetylcholine receptor (nAChR) modulators with protein (AChBP) targets for first time. This was used to develop series 1,2,4-triazolone derivatives. Bioassays demonstrated excellent insecticidal activities against Aphis glycines compounds 4k (LC50 = 4.95 mg/L) 4q 3.17 mg/L), low toxicities Apis mellifera. Additionally, compound stably bound Aplysia californica AChBP, which consistent obtained via molecular docking dynamics simulations. Therefore, could be potential lead candidate targeting nAChR. The explicit nAChR Ac-AChBP in this study may facilitate future rational eco-friendly insecticides.

Language: Английский

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Naturally Occurring Compounds With Larvicidal Activity Against Malaria Mosquitoes

Frontiers in Tropical Diseases, Journal Year: 2021, Volume and Issue: 2

Published: Aug. 11, 2021

Female Anopheles mosquitoes transmit Plasmodium parasites that cause human malaria. Currently, vector control is the most widely deployed approach to reduce mosquito population and hence disease transmission. This relies on use of insecticide-based interventions including Long-lasting Insecticide-treated Nets (LLINs) Indoor Residual Spraying (IRS) where scale-up has contributed a dramatic decline in malaria deaths morbidity over past decade. Challenges their effective include emergence spread insecticide resistance by populations coupled with inability curb outdoor Under these situations, larvicides through larval source management (LSM) can complement existing measures. The need minimize environmental impact effect non-target organisms spurred interest development eco-friendly natural origin. Here, we review literature published last five years highlight compounds origin found exhibit larvicidal activity against mosquitoes. Specifically, different classes discussed organisms. Additionally, provide suggestions for future research into chemical synthesis improve bioactivity known compounds.

Language: Английский

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Facile synthesis, larvicidal activity, biological effects, and molecular docking of sulfonamide-incorporating quaternary ammonium iodides as acetylcholinesterase inhibitors against Culex pipiens L

Bioorganic Chemistry, Journal Year: 2022, Volume and Issue: 128, P. 106098 - 106098

Published: Aug. 13, 2022

Language: Английский

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