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Taillebois E, Cartereau A, Graton J, Le Questel JY, Lebreton J, Mathé-Allainmat M, Thany SH. Synergic effect of a quinuclidine benzamide complexed with borane, the LMA10233, in combination with seven pesticides. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 168:104633. [PMID: 32711767 DOI: 10.1016/j.pestbp.2020.104633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 06/04/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Some quinuclidine benzamide compounds have been found to modulate nicotinic acetylcholine receptors in both mammals and insects. In particular, the quaternarization of 3-amino quinuclidine benzamide derivatives with dichloromethane gave charged N-chloromethylated quinuclidine compounds, disclosing an antagonist profile on homomeric α7 nAChRs. Here, we synthesized and studied the toxicological effect of LMA10233, a quinuclidine-borane complex analogue, the LMA10233, on the pea aphid Acyrthosiphon pisum and found that LMA10233 only exhibit proper toxicity on A. pisum larvae when applied in concentrations of over 10 μg/ml. We assessed the ability of LMA10233 to enhance the toxicity of different insecticides. When a sublethal concentration of LMA10233 was combined with the LC10 of each compound, we found a strong increase in toxicity at 24 h and 48 h of exposure for clothianidin, fipronil and chlorpyrifos, and only at 24 h for imidacloprid, acetamiprid and deltamethrin. However, when the pesticide was used at the LC50, only acetamiprid showed a synergistic effect with LMA10233. When the concentration of LMA10233 was decreased, we found that up to 80-90% of mortality was obtained due to the synergism between acetamiprid and LMA10233. No similar effect was observed with other insecticides. We conclude that such quinuclidine-borane complex compounds could increase the toxic effect of insecticides at low concentrations.
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Affiliation(s)
- Emiliane Taillebois
- Université d'Orléans, Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC) USC INRAE 1328, 1 rue de Chartres, BP 6759, 45067 Orléans, France
| | - Alison Cartereau
- Université d'Orléans, Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC) USC INRAE 1328, 1 rue de Chartres, BP 6759, 45067 Orléans, France
| | - Jérôme Graton
- Université de Nantes, CEISAM UMR CNRS 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes, France
| | - Jean-Yves Le Questel
- Université de Nantes, CEISAM UMR CNRS 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes, France
| | - Jacques Lebreton
- Université de Nantes, CEISAM UMR CNRS 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes, France
| | - Monique Mathé-Allainmat
- Université de Nantes, CEISAM UMR CNRS 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes, France
| | - Steeve H Thany
- Université d'Orléans, Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC) USC INRAE 1328, 1 rue de Chartres, BP 6759, 45067 Orléans, France.
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Kurek M, Barchańska H, Turek M. Degradation Processes of Pesticides Used in Potato Cultivations. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 242:105-151. [PMID: 27718007 DOI: 10.1007/398_2016_13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Potato is one of the most important crops, after maize, rice and wheat. Its global production is about 300 million tons per year and is constantly increasing. It grows in temperate climate and is used as a source of starch, food, and in breeding industry.Potato cultivation requires application of numerous agro-technical products, including pesticides, since it can be affected by insects, weeds, fungi, and viruses. In the European Union the most frequently used pesticides in potato cultivations check are: thiamethoxam, lambda-cyhalothrin and deltamethrin (insecticides), rimsulfuron (herbicide) and metalaxyl (fungicide).Application of pesticides improves crop efficiency, however, as pesticides are not totally selective, it affects also non-target organisms. Moreover, the agrochemicals may accumulate in crops and, as a consequence, negatively influence the quality of food products and consumer health. Additional risks of plant protection products are related to their derivatives, that are created both in the environment (soil, water) and in plant organisms, since many of these compounds may exhibit toxic effects.This article is devoted to the degradation processes of pesticides used in potato crop protection. Attention is also paid to the toxicity of both parent compounds and their degradation products for living organisms, including humans. Information about the level of pesticide contamination in the environment (water, soil) and accumulation level in edible plants complement the current knowledge about the risks associated with widespread use of thiamethoxam, lambda-cyhalothrin and deltamethrin, rimsulfuron and metalaxyl in potato cultivation.
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Affiliation(s)
- M Kurek
- Department of Inorganic, Analytical Chemistry and Electrochemistry, Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego 6, 44-100, Gliwice, Poland.
| | - H Barchańska
- Department of Inorganic, Analytical Chemistry and Electrochemistry, Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego 6, 44-100, Gliwice, Poland
| | - M Turek
- Department of Inorganic, Analytical Chemistry and Electrochemistry, Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego 6, 44-100, Gliwice, Poland
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Guo Y, Yang R, Xu H. New Insecticidal Agents from Halogenation/Acylation of the Furyl-Ring of Fraxinellone. Sci Rep 2016; 6:35321. [PMID: 27775033 PMCID: PMC5075773 DOI: 10.1038/srep35321] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 09/28/2016] [Indexed: 11/09/2022] Open
Abstract
Introduction of the halogen atom or the acyl group at the C-ring of fraxinellone was investigated. Some unexpected halogenation products were obtained with the different chlorination/bromination reagents, and their possible reaction mechanisms were also proposed. Seven key steric structures of 2a’, 2b, 2b’, 2c’, 3a, 3b, and one isomer (5’α-Cl) of 2a were further confirmed by single-crystal X-ray diffraction. Especially compounds 2a, 2a’, 3a and 3c exhibited more potent insecticidal activity than toosendanin. Some structure-activity relationships of tested compounds were also described.
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Affiliation(s)
- Yong Guo
- Research Institute of Pesticidal Design &Synthesis, College of Sciences/Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi Province, P. R. China.,School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, P. R. China
| | - Ruige Yang
- Research Institute of Pesticidal Design &Synthesis, College of Sciences/Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi Province, P. R. China
| | - Hui Xu
- Research Institute of Pesticidal Design &Synthesis, College of Sciences/Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi Province, P. R. China
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Li Q, Huang X, Li S, Ma J, Lv M, Xu H. Semisynthesis of Esters of Fraxinellone C4/10-Oxime and Their Pesticidal Activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5472-5478. [PMID: 27338830 DOI: 10.1021/acs.jafc.6b01995] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A total of 20 esters of fraxinellone C4/10-oxime were synthesized and determined by melting points, optical rotation, infrared spectra, proton nuclear magnetic resonance spectra, and high-resolution mass spectrometry spectra. Two steric configurations of compounds 7i and 8i were unambiguously confirmed by X-ray crystallography. Additionally, their pesticidal activities were assessed on two typical lepidopteran pests, Mythimna separata Walker and Plutella xylostella Linnaeus. Generally, all compounds exhibited less potent oral toxicity than toosendanin against third-instar larvae of P. xylostella. However, all compounds showed the growth inhibitory property against early third-instar larvae of M. separata. Notably, compounds 7m, 8b, 8k, 9, and 11 displayed more potent pesticidal activity than toosendanin. This demonstrated that introducing the C-4 carbonyl or oxime group on fraxinellone resulted in more promising derivatives than those bearing a C-10 carbonyl or oxime substituent.
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Affiliation(s)
- Qin Li
- College of Plant Protection, and ‡Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University , Yangling, Shaanxi 712100, People's Republic of China
| | - Xiaobo Huang
- College of Plant Protection, and ‡Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University , Yangling, Shaanxi 712100, People's Republic of China
| | - Shaochen Li
- College of Plant Protection, and ‡Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University , Yangling, Shaanxi 712100, People's Republic of China
| | - Jingchun Ma
- College of Plant Protection, and ‡Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University , Yangling, Shaanxi 712100, People's Republic of China
| | - Min Lv
- College of Plant Protection, and ‡Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University , Yangling, Shaanxi 712100, People's Republic of China
| | - Hui Xu
- College of Plant Protection, and ‡Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University , Yangling, Shaanxi 712100, People's Republic of China
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Taillebois E, Alamiddine Z, Brazier C, Graton J, Laurent AD, Thany SH, Le Questel JY. Molecular features and toxicological properties of four common pesticides, acetamiprid, deltamethrin, chlorpyriphos and fipronil. Bioorg Med Chem 2015; 23:1540-50. [DOI: 10.1016/j.bmc.2015.02.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 01/22/2015] [Accepted: 02/04/2015] [Indexed: 11/16/2022]
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