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Terajima T, Matsumoto Y, Uehara K, Shimomura K, Tomizawa M. Molecular Recognition Properties of Nicotinic Ligands Determining Selectivity Between Insect and Mammalian Receptors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39361838 DOI: 10.1021/acs.jafc.4c07271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2024]
Abstract
This investigation defines the roles of various amino acids, neighboring key conserved amino acids in loops C and D of the nicotinic acetylcholine (ACh) receptor (nAChR), in the selective molecular recognition of nicotinic ligands with diverse pharmacophores using Aplysia californica ACh binding protein Y55W (Ac-AChBP) mutants (+Q57R; + Q57R+S189 V; + Q57R+S189E; + Q57T; + Q57T+S189 V; + Q57T+S189E) and Lymnaea stagnalis AChBP (Ls-AChBP) mutants (Q55T; Q55T+S186E; Q55R) as insect and mammalian nAChR structural surrogates, respectively. N-nitro/cyanoimine insecticides show high affinity to four Ac-AChBPs containing Arg57 or Thr57 and Ser189 or Val189, except for those with Glu189. Pyrazinoyl compound selectively interacts with the three Ac-AChBPs containing Arg57 and Ser189, Val189, or Glu189. Cationic ligands prefer three Ac-AChBPs with Thr57 and Ser189, Val189, or Glu189 and two Ls-AChBPs providing Thr55 ± Glu186 over the four Ac- and Ls-AChBPs with Arg57/55. Accordingly, loop C contributes to N-nitro/cyanoimine insecticide action, and loop D controls the affinity of the pyrazinoyl or cationic ligand.
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Affiliation(s)
- Takehito Terajima
- Chemical Biology Laboratory, Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Yutsuki Matsumoto
- Chemical Biology Laboratory, Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Kana Uehara
- Chemical Biology Laboratory, Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Kenji Shimomura
- Chemical Biology Laboratory, Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Motohiro Tomizawa
- Chemical Biology Laboratory, Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan
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Wu L, Li Y, Ding W, He H, Gao H, Gao Q, Li Y, Qiu L. Functional roles of nicotinic acetylcholine receptors in dinotefuran and flupyrimin toxicity and their sublethal effects on Sogatella furcifera (Hemiptera: Delphacidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2024:toae211. [PMID: 39302975 DOI: 10.1093/jee/toae211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 08/19/2024] [Accepted: 08/31/2024] [Indexed: 09/22/2024]
Abstract
Sogatella furcifera (Horváth) (Hemiptera: Delphacidae), a serious rice pest, has developed significant resistance to a wide range of pesticides. Neonicotinoid insecticides are currently the primary choice for controlling S. furcifera, yet their impact on the species remains poorly understood. In this study, we investigated the binding sites of a conventional insecticide (dinotefuran) and a novel insecticide (flupyrimin), and evaluated their sublethal effects on S. furcifera. Our results revealed that the LC50 of dinotefuran and flupyrimin were 2.51 mg/L and 2.80 mg/L in third-instar S. furcifera, respectively. RNA interference (RNAi) knockdown of S. furcifera nicotinic acetylcholine receptor (nAChR) alpha2 subunit (Sfα2) and S. furcifera nAChR beta1 subunit (Sfβ1) significantly reduced the susceptibility to dinotefuran by 18.7% and 16.8%, respectively, but had no effect on flupyrimin. Reproduction of the F0 and F1 generations was significantly inhibited by the LC25 of both dinotefuran and flupyrimin. In the dinotefuran treatment at LC25, the intrinsic growth rate (r) and finite growth rate (λ) were reduced to 0.15 and 0.16 days, respectively; the mean generation time (T) increased to 27.77 days, and the relative fitness was only 0.76 compared to the control. Additionally, the relative fitness (Rf) of the flupyrimin-treated group was reduced to 0.93 and 0.86 times that of the control group. The population dynamics of S. furcifera are significantly affected by both dinotefuran and flupyrimin, making these insecticides valuable tools for integrated pest management and the rational use of insecticides.
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Affiliation(s)
- Ling Wu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Yongqi Li
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Wenbing Ding
- National Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
- Hunan Provincial Engineering & Technology Research Center for Biopesticide and Formulation Processing, Hunan Agricultural University, Changsha, China
| | - Hualiang He
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Hongshuai Gao
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Qiao Gao
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, China
| | - Youzhi Li
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, China
- National Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Lin Qiu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, College of Plant Protection, Hunan Agricultural University, Changsha, China
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Jeschke P. Recent developments in fluorine-containing pesticides. PEST MANAGEMENT SCIENCE 2024; 80:3065-3087. [PMID: 38073050 DOI: 10.1002/ps.7921] [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: 10/21/2023] [Revised: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 01/17/2024]
Abstract
To ensure ongoing sustainability, the modern agrochemical industry is faced with enormous challenges. These arise from provision of high-quality food to increasing water use and environmental impact as well as a growing world population. The loss of previous agrochemicals due to consumer perception, changing grower needs and ever-changing regulatory requirements is higher than the number of active ingredients that are being introduced into the crop protection market. Therefore, the development of novel agrochemicals is essential to provide improved efficacy and environmental profiles. In this context, the introduction of fluorine atoms and fluorine-containing motifs into a molecule is an important method to influence its physicochemical properties. These include, for example, small difluoro- and trifluoromethyl, or trifluoromethoxy groups at aryl or heterocyclic aryl moieties but also fragments like 2,2,2-trifluoroethoxycarbonyl, trifluoromethylsulfonyl, trifluoroacetyl, as well as the so far unusal rest like heptafluoro-iso-propyl. This review gives an overview of recent developments of fluorine-containing pesticides launched over the past 7 years and describes a selection of current fluorine-containing development candidates. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Peter Jeschke
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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Terajima T, Ayabe C, Matsumoto Y, Uehara K, Horikoshi R, Suzuki T, Shimomura K, Tomizawa M. Potency and Target Surface Interaction of Diazinoyl Nicotinic Insecticides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:12967-12974. [PMID: 38814790 DOI: 10.1021/acs.jafc.4c01499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Structure-activity relationships of diazinoyl nicotinic insecticides (diazinoyl isomers and 5- or 6-substituted pyrazin-2-oyl analogues) are considered in terms of affinity to the insect nicotinic acetylcholine receptor (nAChR) and insecticidal activity against the imidacloprid-resistant brown planthopper. Among the test compounds, 3-(6-chloropyridin-3-ylmethyl)-2-(pyrazinoyl)iminothiazoline shows the highest potency in nAChR affinity and insecticidal activity. Aplysia californica acetylcholine binding protein (AChBP) mutants (Y55W + Q57R and Y55W + Q57T) are utilized to compare molecular recognition of nicotinic insecticides with diverse pharmacophores. N-nitro- or N-cyanoimine imidacloprid or acetamiprid, respectively, exhibits a high affinity to these AChBP mutants at a similar potency level. Intriguingly, the pyrazin-2-oyl analogue has a higher affinity to AChBP Y55W + Q57R than that to Y55W + Q57T, thereby indicating that pyrazine nitrogen atoms contact Arg57 guanidinium and Trp55 indole NH. Furthermore, nicotine prefers AChBP Y55W + Q57T over Y55W + Q57R, conceivably suggesting that the protonated nicotine is repulsed by Arg57 guanidinium, consistent with its inferior potency to insect nAChR.
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Affiliation(s)
- Takehito Terajima
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Chihiro Ayabe
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Yutsuki Matsumoto
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Kana Uehara
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Ryo Horikoshi
- Biological Solutions Research Center, Research and Development Division, Mitsui Chemicals Crop & Life Solutions, Inc., Mobara 297-0017, Chiba, Japan
| | - Tomonori Suzuki
- Department of Molecular Microbiology, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Kenji Shimomura
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Motohiro Tomizawa
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
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Huang H, Dickhaut J, Weisel M, Mao L, Rankl N, Takeda H, Stam LF, Peacock QM, Höffken HW. Discovery and biological characterization of a novel mesoionic insecticide fenmezoditiaz. PEST MANAGEMENT SCIENCE 2024. [PMID: 38554053 DOI: 10.1002/ps.8108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/01/2024]
Abstract
BACKGROUND Many piercing-sucking insects have developed resistance or cross-resistance to many insecticides targeting insect neural nicotinic acetylcholine receptor (nAChR). Here we are aiming to present the discovery of a novel mesoionic insecticide, fenmezoditiaz, by BASF through structure-based drug design (SBDD) approaches. It has recently been added to the Insecticide Resistance Action Committee mode of classification (IRAC 4E). It is being developed for plant protection against piercing-sucking pests, especially rice hopper complex. RESULTS The soluble acetylcholine binding protein (AChBP) from the sea slug Aplysia californica was modified using site-directed mutagenesis and based on putative aphid nAChR subunit sequences to create soluble insect-like AChBPs. Among them, insect-like β1 AChBP and native aphid membrane preparation showed the highest correlated biochemical affinity toward structurally diverse ligands. This mutant AChBP was used to understand how insect nAChRs structurally interact with mesoionics, which was then utilized to design novel mesoionics including fenmezoditiaz. It is an excellent systemic insecticide with diverse application methods and has a broad insecticidal spectrum, especially against piercing/sucking insects. It lacks cross-resistance for neonicotinoid resistant plant hoppers. Field-collected brown plant hopper populations from Asian countries showed high susceptibility. CONCLUSIONS Fenmezoditiaz is a systemic insecticide with a broad spectrum, lack of cross-resistance and it could be an additional tool for integrated pest management and insecticide resistance management, especially for the rice hopper complex. © 2024 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Huazhang Huang
- BASF Corporation, Global Insecticide Discovery/ Early Biology, Research Triangle Park, Research Triangle Park, NC, USA
| | - Joachim Dickhaut
- BASF SE, Global Insecticide Discovery/ Chemistry at Ludwigshafen, Ludwigshafen am Rhein, Germany
| | - Martin Weisel
- BASF SE, Molecular Modeling & Drug Discovery, Ludwigshafen, Germany
| | - Lixin Mao
- BASF Corporation, Global Insecticide Discovery/ Early Biology, Research Triangle Park, Research Triangle Park, NC, USA
| | - Nancy Rankl
- BASF Corporation, Global Insecticide Discovery/ Early Biology, Research Triangle Park, Research Triangle Park, NC, USA
| | - Haruka Takeda
- Agricultural Solutions, AgSolution Farm Naruto, BASF Japan Ltd, Naruto Sanmu-shi Chiba, Japan
| | - Lynn F Stam
- BASF Corporation, Global Insecticide Discovery/ Early Biology, Research Triangle Park, Research Triangle Park, NC, USA
| | - Quinn M Peacock
- BASF Corporation, Global Insecticide Discovery/ Early Biology, Research Triangle Park, Research Triangle Park, NC, USA
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Lu X, Xu H, Zhang X, Sun T, Lin Y, Li H, Li X, Zhang L, Duan H, Yang X, Ling Y. Target-Based Design, Synthesis, and Biological Evaluation of Novel 1,2,4-Triazolone Derivatives as Potential nAChR Modulators. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:19333-19342. [PMID: 38050804 DOI: 10.1021/acs.jafc.3c04998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
Novel agrochemicals have been successfully developed using target-based drug design (TBDD). To discover a novel, efficient, and highly selective nicotinic insecticide candidate, we developed a unified pharmacological model using TBDD by studying the binding modes of 11 nicotinic acetylcholine receptor (nAChR) modulators with acetylcholine binding protein (AChBP) targets for the first time. This model was used to design and develop a series of 1,2,4-triazolone derivatives. Bioassays demonstrated excellent insecticidal activities against Aphis glycines of compounds 4k (LC50 = 4.95 mg/L) and 4q (LC50 = 3.17 mg/L), and low toxicities to Apis mellifera. Additionally, compound 4q was stably bound to Aplysia californica AChBP, which was consistent with the pharmacological model obtained via molecular docking and molecular dynamics simulations. Therefore, compound 4q could be a potential lead candidate targeting nAChR. The explicit pharmacological model of nAChR modulators with Ac-AChBP in this study may facilitate the future rational design of eco-friendly nicotinic insecticides.
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Affiliation(s)
- Xingxing Lu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Huan Xu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Xiaoming Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Tengda Sun
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Yufan Lin
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Honghong Li
- Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, Agricultural College, Guangxi University, Nanning, Guangxi Province 530004, China
| | - Xuesheng Li
- Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, Agricultural College, Guangxi University, Nanning, Guangxi Province 530004, China
| | - Li Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Hongxia Duan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Xinling Yang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Yun Ling
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
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Xu Y, Wu Z, Wan Z, Du Y, Zhou Q, Chen L, Jin S. Design and One-Pot Ultrasound Synthesis of Inorganic Base-Promoted Fluorescent Ligand-Gated Ion Channel Fused Arylpyrazole Sulfonamide Skeletons to Enhance Phloem Mobility and Insecticidal Activity as GABA and nACh Receptors Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:16331-16351. [PMID: 37871250 DOI: 10.1021/acs.jafc.3c04861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Ligand-gated ion channels are essential in living organisms, and sulfonamides have antibacterial effects and can be readily coordinated with metal ions with good biological activity. A series of fluorescent ligand-gated ion channel fused arylpyrazole sulfonamide skeletons (APSnM) were synthesized based on a one-pot ultrasound strategy promoted by an inorganic base. APSnM had a high fluorescence quantum yield and a large Stokes shift in ethanol solvent. The ligand bonded ions took on a different color from the ligand and can be used as a probe to detect their own residue on plant surfaces. Their hydrophobic parameters and the fluorescence distribution in Chinese cabbage leaves indicated that APSnM significantly increased the phloem mobility of the plant. The insecticidal activity of APS3Na was higher (LC50 = 7.2423 μg/mL) than that of fipronil (15.2312 μg/mL) against Plutella xylostella, and the mechanism of high insecticidal activity of APS3Na was simulated by molecular docking, which confirmed its strong interactions with the GABA and nACh receptors of Plutella xylostella. Analysis of the crystal structure of these ligand-gated ion channels further confirmed the consistency of their structure and biological activity.
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Affiliation(s)
- Yueyue Xu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Zhongda Wu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Zilou Wan
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Yanting Du
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Quan Zhou
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Lianqing Chen
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
- Hubei Three Gorges Laboratory, Yichang 443000, China
- Department of Chemistry, University of Wisconsin-Platteville, Platteville 53818, United States
| | - Shiwei Jin
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
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Wang Y, Zhang X, Kong Y, Yang WL, Xu Z, Cheng J, Shao X, Xu X, Li Z. Design, Synthesis, and Insecticidal Evaluation of Neonicotinoids with Conjugated Diene. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37471653 DOI: 10.1021/acs.jafc.3c01802] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Neonicotinoid insecticides acting on the insect nicotinic acetylcholine receptors (nAChRs) play an essential role in contemporary pest control. In the present study, a series of novel neonicotinoid analogues with conjugated diene were synthesized. Bioassays indicated that compounds A3 and A12 had LC50 values of 1.26 and 1.24 mg/L against Myzus persicae, respectively, which were comparable to that of imidacloprid (IMI, LC50 = 0.78 mg/L). Density functional theory (DFT) calculations were performed to explain the differences in the insecticidal activities of target compounds. Molecular docking results indicate that compounds A3 and A12 interact favorably with Lymnaea stagnalis AChBP. The hydrolysis experiments confirmed that the stability of compounds A3 and A12 was enhanced in water.
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Affiliation(s)
- Yiping Wang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xiao Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Yijin Kong
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Zhiping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- Shanghai Collaborative Innovation Center for Biomanufacturing Technology, 130 Meilong Road, Shanghai 200237, China
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Yin C, Gui LY, Du TH, Zhang CJ, Wei XG, Yang J, Huang MJ, Fu BL, Gong PP, Liang JJ, Liu SN, Xue H, Hu JY, Ji Y, He C, Du H, Wang C, Zhang R, Wu QJ, Yang X, Zhang YJ. Knockdown of the Nicotinic Acetylcholine Receptor β1 Subunit Decreases the Susceptibility to Five Neonicotinoid Insecticides in Whitefly ( Bemisia tabaci). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7221-7229. [PMID: 37157975 DOI: 10.1021/acs.jafc.3c00782] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The sweet potato whitefly, Bemisia tabaci, (Gennadius) (Hemiptera:Aleyrodidae) is a global pest of crops. Neonicotinoids are efficient insecticides used for control of this pest. Insecticidal targets of neonicotinoids are insect nicotinic acetylcholine receptors (nAChRs). Here, we characterized and cloned the full length of the nAChR β1 subunit (BTβ1) in B. tabaci and confirmed the consistency of BTβ1 in B. tabaci MEAM1 and MED. Expression levels of BTβ1 in different developmental stages and body parts of adults were investigated and compared in B. tabaci MED. dsRNA was prepared to knock down BTβ1 in adult B. tabaci and significantly decreases the susceptibility to five neonicotinoid insecticides, including imidacloprid, clothianidin, thiacloprid, nitenpyram, and dinotefuran. This study indicated BTβ1 as a notable site influencing the susceptibility of B. tabaci to neonicotinoids.
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Affiliation(s)
- Cheng Yin
- Hubei Engineering Technology Center for Pest Forewarning and Management, College of Agriculture, Yangtze University, Jingzhou, Hubei 434025, People's Republic of China
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Lian-You Gui
- Hubei Engineering Technology Center for Pest Forewarning and Management, College of Agriculture, Yangtze University, Jingzhou, Hubei 434025, People's Republic of China
| | - Tian-Hua Du
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Cheng-Jia Zhang
- Hunan Provincial Key laboratory of Pesticide Biology and Precise Use Techology, Hunan Agricultural Biotechnology Research Institute, Changsha, Hunan 410125, People's Republic of China
| | - Xue-Gao Wei
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Jing Yang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Ming-Jiao Huang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Bu-Li Fu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Pei-Pan Gong
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Jin-Jin Liang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Shao-Nan Liu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Hu Xue
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Jin-Yu Hu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Yao Ji
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Chao He
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - He Du
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Chao Wang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Rong Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Qing-Jun Wu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Xin Yang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - You-Jun Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
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He J, Sun Z, Deng Y, Liu Y, Zheng P, Cao S. Controllable Synthesis of Trifluoromethyl- or gem-Difluorovinyl-containing Analogues of Neonicotinoids by the Reaction of α-(Trifluoromethyl)styrenes with 2-Nitroimino-imidazolidine. Molecules 2023; 28:molecules28083530. [PMID: 37110766 PMCID: PMC10145784 DOI: 10.3390/molecules28083530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
A simple and straightforward addition or defluorination of α-(trifluoromethyl)styrenes with 2-nitroimino-imidazolidine (2a), 2-(nitromethylene)imidazolidine (2b), 2-cyanoimino-thiazolidine (2c), and (E)-1-methyl-2-nitroguanidine (2d), in a controlled manner, was developed. The hydroamination of α-(trifluoromethyl)styrenes with 2a, 2b, 2c, and 2d was completed in the presence of DBN at room temperature within 0.5-6 h, affording structurally diverse β-trifluoromethyl-β-arylethyl analogues of neonicotinoids in moderate to good yields. The γ,γ-difluoro-β-arylallyl analogues of neonicotinoids were also successfully synthesized via defluorination of α-(trifluoromethyl)styrenes, with 2a and 2c using NaH as base at an elevated temperature together with a prolonged reaction time of 12 h. The method features simple reaction setup, mild reaction conditions, broad substrate scope, high functional group compatibility, and easy scalability.
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Affiliation(s)
- Jingjing He
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Zhudi Sun
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Yupian Deng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Ying Liu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Pai Zheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Song Cao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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11
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Yuan GR, Chen ML, Peng ML, Lei W, Meng LW, Dou W, Wang JJ. Knockdown of a Nicotinic Acetylcholine Receptor Subunit Gene Bdorβ1 Decreases Susceptibility to Oxa-Bridged trans- instead of cis-Nitromethylene Neonicotinoid Insecticides in Bactrocera dorsalis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:13554-13562. [PMID: 36224100 DOI: 10.1021/acs.jafc.2c04709] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels that mediate the fast action of acetylcholine in synaptic cholinergic transmissions. Insect nAChRs are the target of several classes of insecticides. Here, the full-length cDNA encoding a nAChR beta1 subunit (Bdorβ1) was identified and characterized from a destructive pest, Bactrocera dorsalis. The amino acid sequence of Bdorβ1 shows high identities to other insect nAChRs β1 subunits. Double injection of dsBdorβ1 reduced the expression of Bdorβ1 and in turn significantly decreased susceptibility to oxa-bridged trans- instead of cis-nitromethylene neonicotinoids. Our results support the involvement of Bdorβ1 in the susceptibility of B. dorsalis to oxa-bridged trans- instead of cis-nitromethylene neonicotinoids and imply that these two classes of neonicotinoids might be acting at different nAChR subtypes.
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Affiliation(s)
- Guo-Rui Yuan
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Meng-Ling Chen
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Meng-Lan Peng
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Wei Lei
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Li-Wei Meng
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Wei Dou
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Jin-Jun Wang
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
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12
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Zhao F, Tang X, Huang J, Li J, Xiao Y, Qin Z. Design, synthesis, and insecticidal activity of a novel series of flupyrimin analogs bearing 1-aryl-1H-pyrazol-4-yl subunits. Front Chem 2022; 10:1019573. [PMID: 36262338 PMCID: PMC9574050 DOI: 10.3389/fchem.2022.1019573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
To discover new potential insecticides to protect agricultural crops from damage, a series of novel flupyrimin derivatives containing an arylpyrazole core were designed and synthesized. Their structures were confirmed by 1H NMR, 13C NMR, and HRMS. Bioassays indicated that the 31 compounds synthesized possessed excellent insecticidal activity against Plutella xylostella. Among these target compounds, the lethality of A3, B1-B6, D4, and D6 reached 100% at 400 μg/ml. Moreover, when the concentration dropped to 25 μg/ml, the insecticidal activities against the Plutella xylostella for compounds B2, B3, and B4 still reached more than 70%. The structure–activity relationship of the Plutella xylostella was discussed. The density functional theory analysis of flupyrimin and B4 was carried out to support the abovementioned structure–activity relationship. The possible binding modes between receptor and active groups in title compounds were also verified by docking simulation. These results provided new ideas for the development of these novel candidate insecticides in the future.
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Affiliation(s)
| | | | | | | | | | - Zhaohai Qin
- *Correspondence: Jiaxing Huang, ; Zhaohai Qin,
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13
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Design, Synthesis and Bioactivity of Novel Low Bee-Toxicity Compounds Based on Flupyrimin. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27186133. [PMID: 36144866 PMCID: PMC9505580 DOI: 10.3390/molecules27186133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/17/2022]
Abstract
Neonicotinoids are important insecticides for controlling aphids in agriculture. Growing research suggested that neonicotinoid insecticides are a key factor causing the decline of global pollinator insects, such as bees. Flupyrimin (FLP) is a novel nicotinic insecticide with unique biological properties and no cross-resistance, and is safe for pollinators. Using FLP as the lead compound, a series of novel compounds were designed and synthesized by replacing the amide fragment with a sulfonamideone. Their structures were confirmed by 1H NMR, 13C NMR and HRMS spectra. Bioassay results showed that compound 2j had good insecticidal activity against Aphis glycines with an LC50 value of 20.93 mg/L. Meanwhile, compound 2j showed significantly lower acute oral and contact toxicity to Apis mellifera. In addition, compound 2j interacted well with the protein in insect acetylcholine binding protein (AChBP). The molecular docking on honeybee nicotinic acetylcholine receptor (nAChR) indicated that the sulfonamide group of compound 2j did not form a hydrogen bond with Arg173 of the β subunit, which conforms to the reported low bee-toxicity conformation. In general, target compound 2j can be regarded as a bee-friendly insecticide candidate.
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14
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Jeschke P, Lösel P, Hellwege E, Dietz M, Herrmann S, Gutbrod O. N-Hetaryl-[2(1 H)-pyridinyliden]cyanamides: A New Class of Systemic Insecticides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11097-11108. [PMID: 35749741 DOI: 10.1021/acs.jafc.2c00347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The new chemical class N-hetaryl-[2(1H)-pyridinylidene]cyanamides were inspired by the long known five-ring structure 2-chloro-5-[2-(nitro-methylene)-1-imidazolidinyl]-pyridine (Shell) and the current development candidate flupyrimin (Meiji Seika Pharma) via scaffold hopping and the concept for designing "shortened structures" by omitting the "methylene link" as a structural feature. The most active N-hetaryl-[2(1H)-pyridinylidene]cyanamides can be synthesized on a technical scale by a simple manufacturing procedure. As full nicotinic acetylcholine receptor (nAChR) agonists, the compounds bind with low affinity at the orthosteric binding site of nAChR. In molecular modeling studies, structural differences are visible in the superposition of active N-[6'-(trifluoromethyl)[1(2H),3'-bipyridin]-2-ylidene]cyanamide onto imidacloprid (IMD) and sulfoxaflor (SXF) in bound conformation. On the basis of their physicochemical properties, the most active xylem systemic candidates offer excellent aphicidal activity in vegetables and cotton, when applied as a foliar spray, by soil drench application, or, in particular, as seed dressing for seed treatment uses. Selected candidates show good plant compatibility and reveal a better risk profile with respect to bee pollinators than the majority of currently registered nAChR competitive modulators for seed treatment uses. Applied as a seed dressing in greenhouse profiling, good to excellent control of different aphid species has been observed. In field trials, an interesting level of activity potential against cereal grain aphids (inclusive virus vector control), corn rootworm, and wireworm could be demonstrated. According to molecular modeling investigations (Fukui functions, dipole moments, and electrostatic potentials), there is a broad scope for structure optimization of the chemical class leading to proposals for novel bicyclic insecticides.
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Affiliation(s)
- Peter Jeschke
- Research & Development, Pest Control Chemistry, Bayer AG, Crop Science, Building 6550, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Peter Lösel
- Research & Development, Pest Control Biology, Bayer AG, Crop Science, Building 6220, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Elke Hellwege
- Research & Development, Pest Control Biology, Bayer AG, Crop Science, Building 6220, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Michael Dietz
- Seed Growth, Bayer AG, Crop Science, Building 6100, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Stefan Herrmann
- Research & Development, Pest Control Biology, Bayer AG, Crop Science, Building 6220, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Oliver Gutbrod
- Computational Life Science, Bayer AG, Crop Science, Building 6550, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
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15
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Shuai J, Wang X, Li G, Kong Y, Li W, Li Z, Cheng J. Study on the mode of action between Apis mellifera (α8)2(β1)3 nAChR and typical neonicotinoids versus flupyradifurone with different bee-toxic levels. J Mol Graph Model 2022; 114:108177. [DOI: 10.1016/j.jmgm.2022.108177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 12/26/2021] [Accepted: 03/17/2022] [Indexed: 10/18/2022]
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16
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Zhao F, Liu Y, Qin Z, Wu Y, Xiao Y, Li J. Synthesis and insecticidal activity of novel 1,2,4‐triazole containing amidine moiety. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fenghai Zhao
- Innovation Centre of Pesticide Research, Department of Chemistry, College of Science China Agricultural University. Beijing 100193 China
| | - Yanfei Liu
- Innovation Centre of Pesticide Research, Department of Chemistry, College of Science China Agricultural University. Beijing 100193 China
| | - Zhaohai Qin
- Innovation Centre of Pesticide Research, Department of Chemistry, College of Science China Agricultural University. Beijing 100193 China
| | - Yanhua Wu
- Innovation Centre of Pesticide Research, Department of Chemistry, College of Science China Agricultural University. Beijing 100193 China
| | - Yumei Xiao
- Innovation Centre of Pesticide Research, Department of Chemistry, College of Science China Agricultural University. Beijing 100193 China
| | - Jia‐Qi Li
- Innovation Centre of Pesticide Research, Department of Chemistry, College of Science China Agricultural University. Beijing 100193 China
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17
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Cens T, Chavanieu A, Bertaud A, Mokrane N, Estaran S, Roussel J, Ménard C, De Jesus Ferreira M, Guiramand J, Thibaud J, Cohen‐Solal C, Rousset M, Rolland V, Vignes M, Charnet P. Molecular Targets of Neurotoxic Insecticides in
Apis mellifera. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Thierry Cens
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Alain Chavanieu
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Anaïs Bertaud
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Nawfel Mokrane
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Sébastien Estaran
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Julien Roussel
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Claudine Ménard
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | | | - Janique Guiramand
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Jean‐Baptiste Thibaud
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Catherine Cohen‐Solal
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Matthieu Rousset
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Valérie Rolland
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Michel Vignes
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
| | - Pierre Charnet
- Institut des Biomolécules Max Mousseron Université de Montpellier, CNRS, ENSCM 1919 Route de Mende 34293 Montpellier France
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18
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Affiliation(s)
- Peter Jeschke
- Bayer AG Research & Development, Crop Science Pest Control Chemistry Alfred-Nobel-Str. 50 40789 Monheim Germany
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19
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Zhao Z, Shi T, Chu Y, Cao Y, Cheng S, Na R, Wang Y. Comparison of the interactions of flupyrimin and nitenpyram with serum albumins via multiple analysis methods. CHEMOSPHERE 2022; 289:133139. [PMID: 34863729 DOI: 10.1016/j.chemosphere.2021.133139] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 06/13/2023]
Abstract
Flupyrimin and nitenpyram are emerging neonicotinoid insecticides that may cause potential harm to the human body. In the present work, the interactions of flupyrimin/nitenpyram with serum albumins under normal physiological conditions were thoroughly studied by using multiple spectroscopic techniques, DFT calculations and molecular docking. Flupyrimin/nitenpyram can quench the endogenous fluorescence of HSA/BSA and form a complex with HSA/BSA through a static process, causing conformational and secondary structure changes of HSA/BSA. Thermodynamic analysis shows that the combination of flupyrimin/nitenpyram with HSA/BSA is a spontaneous process, mainly driven by hydrogen bonds and hydrophobic forces. Site marking and molecular docking experiments indicated that flupyrimin/nitenpyram binds with HSA/BSA at site II (subdomain IIIA). The binding constant Ka in HSA-flupyrimin, HSA-nitenpyram, BSA-flupyrimin and BSA-nitenpyram systems at 298 K was 2.11 × 105 M-1, 2.35 × 105 M-1, 1.91 × 105 M-1 and 2.11 × 105 M-1, respectively. The binding constant Ka of nitenpyram with HSA/BSA was greater than flupyrimin, indicating that nitenpyram binds HSA/BSA was more stable than that of flupyrimin, which was consistent with the DFT calculation. In addition, the acute toxicity bioassay showed that flupyrimin and nitenpyram exhibited low toxicity to zebrafish, with 96 h LC50 values of 181.662 and 250.658 mg a. i. L-1, respectively. These results can help understand the interactions of flupyrimin/nitenpyram with HSA/BSA.
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Affiliation(s)
- Zongyuan Zhao
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Taozhong Shi
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Ying Chu
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Yingying Cao
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Shuang Cheng
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Risong Na
- Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, College of Plant Protection, Henan Agricultural University, Wenhua Road No. 95, Zhengzhou, 450002, China
| | - Yi Wang
- Anhui Provincial Key Laboratory of Quality and Safety of Agricultural Products, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China.
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20
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Fluorine-containing agrochemicals in the last decade and approaches for fluorine incorporation. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.07.064] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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21
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Montgomery M, Rendine S, Zimmer CT, Elias J, Schaetzer J, Pitterna T, Benfatti F, Skaljac M, Bigot A. Structural Biology-Guided Design, Synthesis, and Biological Evaluation of Novel Insect Nicotinic Acetylcholine Receptor Orthosteric Modulators. J Med Chem 2022; 65:2297-2312. [PMID: 34986308 DOI: 10.1021/acs.jmedchem.1c01767] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The development of novel and safe insecticides remains an important need for a growing world population to protect crops and animal and human health. New chemotypes modulating the insect nicotinic acetylcholine receptors have been recently brought to the agricultural market, yet with limited understanding of their molecular interactions at their target receptor. Herein, we disclose the first crystal structures of these insecticides, namely, sulfoxaflor, flupyradifurone, triflumezopyrim, flupyrimin, and the experimental compound, dicloromezotiaz, in a double-mutated acetylcholine-binding protein which mimics the insect-ion-channel orthosteric site. Enabled by these findings, we discovered novel pharmacophores with a related mode of action, and we describe herein their design, synthesis, and biological evaluation.
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Affiliation(s)
- Mark Montgomery
- Syngenta Crop Protection, Jealott's Hill International Research Centre, RG42 6EY Bracknell, Berkshire, U.K
| | - Stefano Rendine
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Christoph T Zimmer
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Jan Elias
- Syngenta Crop Protection AG, Rosentalstrasse 67, 4002 Basel, Switzerland
| | - Jürgen Schaetzer
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Thomas Pitterna
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Fides Benfatti
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Marisa Skaljac
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Aurélien Bigot
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
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22
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Alexandrino DAM, Almeida CMR, Mucha AP, Carvalho MF. Revisiting pesticide pollution: The case of fluorinated pesticides. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118315. [PMID: 34634397 DOI: 10.1016/j.envpol.2021.118315] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/11/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
Fluorinated pesticides acquired a significant market share in the agrochemical sector due to the surge of new fluoroorganic ingredients approved in the last two decades. This growing trend has not been accompanied by a comprehensive scientific and regulatory framework entailing all their potential negative impacts for the environment, especially when considering the hazardous properties that may result from the incorporation of fluorine into organic molecules. This review aims to address the safe/hazardous dichotomy associated with fluorinated pesticides by providing an updated outlook on their relevancy in the agrochemical sector and how it leads to their role as environmental pollutants. Specifically, the environmental fate and distribution of these pesticides in the ecosystems is discussed, while also analysing their potential to act as toxic substances for non-target organisms.
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Affiliation(s)
- Diogo A M Alexandrino
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos s/n, 4450-208, Matosinhos, Portugal; School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.
| | - C Marisa R Almeida
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos s/n, 4450-208, Matosinhos, Portugal
| | - Ana P Mucha
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos s/n, 4450-208, Matosinhos, Portugal; Faculty of Sciences, University of Porto, Rua do Campo Alegre 790, 4150-171, Porto, Portugal
| | - Maria F Carvalho
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos s/n, 4450-208, Matosinhos, Portugal; School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
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23
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Watson GB, Siebert MW, Wang NX, Loso MR, Sparks TC. Sulfoxaflor - A sulfoximine insecticide: Review and analysis of mode of action, resistance and cross-resistance. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 178:104924. [PMID: 34446200 DOI: 10.1016/j.pestbp.2021.104924] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 07/08/2021] [Accepted: 07/11/2021] [Indexed: 06/13/2023]
Abstract
The sulfoximines, as exemplified by sulfoxaflor (Isoclast™active), are a relatively new class of nicotinic acetylcholine receptor (nAChR) competitive modulator (Insecticide Resistance Action Committee [IRAC] Group 4C) insecticides that provide control of a wide range of sap-feeding insect pests. The sulfoximine chemistry and sulfoxaflor exhibits distinct interactions with metabolic enzymes and nAChRs compared to other IRAC Group 4 insecticides such as the neonicotinoids (Group 4A). These distinctions translate to notable differences in the frequency and degree of cross-resistance between sulfoxaflor and other insecticides. Most insect strains exhibiting resistance to a variety of insecticides, including neonicotinoids, exhibited little to no cross-resistance to sulfoxaflor. To date, only two laboratory-based studies involving four strains (Koo et al. 2014, Chen et al. 2017) have observed substantial cross-resistance (>100 fold) to sulfoxaflor in neonicotinoid resistant insects. Where higher levels of cross-resistance to sulfoxaflor are observed the magnitude of that resistance is far less than that of the selecting neonicotinoid. Importantly, there is no correlation between presence of resistance to neonicotinoids (i.e., imidacloprid, acetamiprid) and cross-resistance to sulfoxaflor. This phenomenon is consistent with and can be attributed to the unique and differentiated chemical class represented by sulfoxalfor. Recent studies have demonstrated that high levels of resistance (resistance ratio = 124-366) to sulfoxaflor can be selected for in the laboratory which thus far appear to be associated with enhanced metabolism by specific cytochrome P450s, although other resistance mechanisms have not yet been excluded. One hypothesis is that sulfoxaflor selects for and is susceptible to a subset of P450s with different substrate specificity. A range of chemoinformatic, molecular modeling, metabolism and target-site studies have been published. These studies point to distinctions in the chemistry of sulfoxaflor, and its metabolism by enzymes associated with resistance to other insecticides, as well as its interaction with insect nicotinic acetylcholine receptors, further supporting the subgrouping of sulfoxaflor (Group 4C) separate from that of other Group 4 insecticides. Herein is an expansion of an earlier review (Sparks et al. 2013), providing an update that considers prior and current studies focused on the mode of action of sulfoxaflor, along with an analysis of the presently available resistance / cross-resistance studies, and implications and recommendations regarding resistance management.
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Affiliation(s)
- Gerald B Watson
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America.
| | - Melissa W Siebert
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Nick X Wang
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Michael R Loso
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
| | - Thomas C Sparks
- Corteva Agriscience LLC, 9330 Zionsville Road, Indianapolis, IN 46268, United States of America
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Zhao F, Tang X, Liu M, Qin Z, Li JQ, Xiao Y. Synthesis and insecticidal activity of novel 1,2,4-triazole derivatives containing trifluoroacetyl moieties. Mol Divers 2021; 26:2149-2158. [PMID: 34585322 DOI: 10.1007/s11030-021-10321-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 09/17/2021] [Indexed: 10/20/2022]
Abstract
A series of compounds containing trifluoroacetyl groups were synthesized, and their insecticidal activity against Nilaparvata lugens and Aphis craccivora was evaluated. The compound structure was identified by NMR, HRMS, and single-crystal diffraction. The bioassay results indicated that compound 4-1 (R1 is chloropyridine, R2 is H), 4-2 (R1 is chlorothiazole, R2 is H) and 4-19 (R1 is benzyl, R2 is isopropyl) had the best activity against Nilaparvata lugens (93.5%, 94.1% and 95.5%) at 100 mg/L concentration. The effect of different substituents of R1 or R2 on the activity was studied through the structure-activity relationship. Molecular docking of compounds 4-1 and 4-2 was discussed.
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Affiliation(s)
- Fenghai Zhao
- Department of Chemistry, Innovation Center of Pesticide Research, College of Science, China Agricultural University, Beijing, 100193, China
| | - Xianjun Tang
- Department of Chemistry, Innovation Center of Pesticide Research, College of Science, China Agricultural University, Beijing, 100193, China
| | - Min Liu
- Department of Chemistry, Innovation Center of Pesticide Research, College of Science, China Agricultural University, Beijing, 100193, China
| | - Zhaohai Qin
- Department of Chemistry, Innovation Center of Pesticide Research, College of Science, China Agricultural University, Beijing, 100193, China
| | - Jia-Qi Li
- Department of Chemistry, Innovation Center of Pesticide Research, College of Science, China Agricultural University, Beijing, 100193, China
| | - Yumei Xiao
- Department of Chemistry, Innovation Center of Pesticide Research, College of Science, China Agricultural University, Beijing, 100193, China
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Terajima T, Suzuki T, Horikoshi R, Doi S, Nakamura M, Kobayashi F, Durkin KA, Shimomura K, Nakamura S, Yamamoto K, Tomizawa M. Deciphering the Flupyrimin Binding Surface on the Insect Nicotinic Acetylcholine Receptor. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:9551-9556. [PMID: 34374535 DOI: 10.1021/acs.jafc.1c03241] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A novel insecticide flupyrimin (FLP) with a trifluoroacetyl pharmacophore acts as an antagonist at the insect nicotinic acetylcholine receptor (nAChR). This investigation examines a hypothesis that the FLP C(O)CF3 moiety is primarily recognized by the β subunit-face in the ligand-binding pocket (interface between α and β subunits) of the insect nAChR. Accordingly, we evaluate the atomic interaction between a fluorine atom of FLP and the partnering amino acid side chain on the β subunit employing a recombinant hybrid nAChR consisting of aphid Mpα2 and rat Rβ2 subunits (with a mutation at T77 on the Rβ2). The H-donating T77R, T77K, T77N, or T77Q nAChR enhances the FLP binding potency relative to that of the wild-type receptor, whereas the affinity of neonicotinoid imidaclprid (IMI) with a nitroguanidine pharmacophore remains unchanged. These results facilitate the establishment of the unique FLP molecular recognition at the Mpα2/Mpβ1 interface structural model, thereby underscoring a distinction in its binding mechanism from IMI.
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Affiliation(s)
- Takehito Terajima
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Tomonori Suzuki
- Department of Molecular Microbiology, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Ryo Horikoshi
- Agricultural and Veterinary Research Labs, Agricultural and Veterinary Division, Meiji Seika Pharma Co., Ltd., Yokohama, Kanagawa 222-8567, Japan
| | - Shohei Doi
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Mizuki Nakamura
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Fumika Kobayashi
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Kathleen A Durkin
- College of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
| | - Kenji Shimomura
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
| | - Satoshi Nakamura
- Agricultural and Veterinary Research Labs, Agricultural and Veterinary Division, Meiji Seika Pharma Co., Ltd., Yokohama, Kanagawa 222-8567, Japan
| | - Kazumi Yamamoto
- Agricultural and Veterinary Research Labs, Agricultural and Veterinary Division, Meiji Seika Pharma Co., Ltd., Yokohama, Kanagawa 222-8567, Japan
| | - Motohiro Tomizawa
- Department of Chemistry, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo 156-8502, Japan
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Jones AK, Goven D, Froger JA, Bantz A, Raymond V. The cys-loop ligand-gated ion channel gene superfamilies of the cockroaches Blattella germanica and Periplaneta americana. PEST MANAGEMENT SCIENCE 2021; 77:3787-3799. [PMID: 33347700 DOI: 10.1002/ps.6245] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/27/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Cockroaches are serious urban pests that can transfer disease-causing microorganisms as well as trigger allergic reactions and asthma. They are commonly managed by pesticides that act on cys-loop ligand-gated ion channels (cysLGIC). To provide further information that will enhance our understanding of how insecticides act on their molecular targets in cockroaches, we used genome and reverse transcriptase polymerase chain reaction (RT-PCR) data to characterize the cysLGIC gene superfamilies from Blattella germanica and Periplaneta americana. RESULTS The B. germanica and P. americana cysLGIC superfamilies consist of 30 and 32 subunit-encoding genes, respectively, which are the largest insect cysLGIC superfamilies characterized to date. As with other insects, the cockroaches possess ion channels predicted to be gated by acetylcholine, γ-aminobutyric acid, glutamate and histamine, as well as orthologues of the drosophila pH-sensitive chloride channel (pHCl), CG8916 and CG12344. The large cysLGIC superfamilies of cockroaches are a result of an expanded number of divergent nicotinic acetylcholine receptor subunits, with B. germanica and P. americana, respectively, possessing eight and ten subunit genes. Diversity of the cockroach cysLGICs is also broadened by alternative splicing and RNA A-to-I editing. Unusually, both cockroach species possess a second glutamate-gated chloride channel as well as another CG8916 subunit. CONCLUSION These findings on B. germanica and P. americana enhance our understanding of the evolution of the insect cysLGIC superfamily and provide a useful basis for the study of their function, the detection and management of insecticide resistance, and for the development of improved pesticides with greater specificity towards these major pests. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Andrew K Jones
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
| | - Delphine Goven
- Laboratoire « Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs » (SiFCIR), UPRES-EA2647 USC INRAE 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, Angers, France
| | - Josy-Anne Froger
- Laboratoire « Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs » (SiFCIR), UPRES-EA2647 USC INRAE 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, Angers, France
| | - Alexandre Bantz
- Laboratoire « Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs » (SiFCIR), UPRES-EA2647 USC INRAE 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, Angers, France
| | - Valerie Raymond
- Laboratoire « Signalisation Fonctionnelle des Canaux Ioniques et Récepteurs » (SiFCIR), UPRES-EA2647 USC INRAE 1330, SFR 4207 QUASAV, UFR Sciences, Université d'Angers, Angers, France
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27
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Synthetic approaches to the 2015-2018 new agrochemicals. Bioorg Med Chem 2021; 39:116162. [PMID: 33895705 DOI: 10.1016/j.bmc.2021.116162] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/03/2021] [Accepted: 04/07/2021] [Indexed: 12/23/2022]
Abstract
In this review, the synthesis of 33 agrochemicals that received an international standardization organization (ISO) name between January 2015 and December 2018 is described. The aim is to showcase the broad range and scope of reactions, reagents and intermediates used to discover and produce the latest active ingredients addressing the crop protection industry's needs.
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28
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Chen Y, Cao X, Chen X, Li Z, Xu X. The structure modification of seven-membered aza-brigded neonicotinoids in order to investigate their impact on honey bees. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/17475198211012237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In order to explore the relationship between the structure and the toxicity to honey bees of seven-membered aza-bridged neonicotinoids, 16 novel seven-membered aza-bridged neonicotinoid analogues are synthesized by replacing the pyridine ring, and changing the substituents on the pyridine ring, the electron-withdrawing group NO2 and the imidazole ring of our previously developed aza-bridged neonicotinoid 1-[(6-chloropyridin-3-yl)methyl)]-10-(2,5-dimethylphenyl)-9-nitro-2,3,5,6,7,8-hexahydro-1 H-5,8-epiminoimidazo azepine (C-29). The insecticidal bioactivities against cowpea aphid ( Aphis craccivora) and the bee toxicities of these compounds are tested. Some of the title compounds present good insecticidal activities against cowpea aphid. The results also show that some of the title compounds exhibit lower bee toxicity than that of C-29 and imidacloprid. This suggests that changing the substituents on the neonicotinoids can influence the toxicity toward honey bees of these analogues.
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Affiliation(s)
- Yuce Chen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, P.R. China
| | - Xiaofeng Cao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, P.R. China
| | - Xi Chen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, P.R. China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, P.R. China
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, P.R. China
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29
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Jeschke P. Status and outlook for acaricide and insecticide discovery. PEST MANAGEMENT SCIENCE 2021; 77:64-76. [PMID: 32926594 PMCID: PMC7756306 DOI: 10.1002/ps.6084] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/10/2020] [Accepted: 09/14/2020] [Indexed: 05/03/2023]
Abstract
To guarantee sustainability and progress, the agrochemical industry is faced with several major challenges. Currently, loss of active ingredients due to consumer perception, changing grower needs and ever-changing regulatory requirements is far higher than the number being introduced into the market. Therefore, there is a need to develop new products that can provide improved efficacy, selectivity and favorable environmental profiles. Strategies to achieve these goals are the search for acaricides and insecticides with new modes of action, or the discovery of novel molecules with activity on the most attractive target sites having resistance breaking properties against pest species. In this context, the introduction of halogen atoms or asymmetric centers into an active ingredient remains an important tool to modulate their properties, but so too is the pro-pesticide concept. This review gives an overview of agrochemicals launched over the past 8 years, reflects new insights into known mechanisms of action, and describes the status and outlook for acaricide and insecticide discovery.
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Affiliation(s)
- Peter Jeschke
- Bayer AG, Research & Development, Crop SciencePest Control ChemistryMonheim am RheinGermany
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30
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Yang Z, Wu X, Zhang J, Lu X, Li X, Jiang Z, Song D, Duan H, Yang X. Screening and Optimization of Novel Low Bee-Toxicity Phenylace- tohydrazone Compounds Based on Insect nAChR Selectivity. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202101028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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31
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Li X, Yang X, Zheng X, Bai M, Hu D. Review on Structures of Pesticide Targets. Int J Mol Sci 2020; 21:E7144. [PMID: 32998191 PMCID: PMC7582455 DOI: 10.3390/ijms21197144] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022] Open
Abstract
Molecular targets play important roles in agrochemical discovery. Numerous pesticides target the key proteins in pathogens, insect, or plants. Investigating ligand-binding pockets and/or active sites in the proteins' structures is usually the first step in designing new green pesticides. Thus, molecular target structures are extremely important for the discovery and development of such pesticides. In this manuscript, we present a review of the molecular target structures, including those of antiviral, fungicidal, bactericidal, insecticidal, herbicidal, and plant growth-regulator targets, currently used in agrochemical research. The data will be helpful in pesticide design and the discovery of new green pesticides.
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Affiliation(s)
- Xiangyang Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China;
| | - Xueqing Yang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China;
| | - Xiaodong Zheng
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China;
| | - Miao Bai
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China;
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China;
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32
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Reid RJ, Troczka BJ, Kor L, Randall E, Williamson MS, Field LM, Nauen R, Bass C, Davies TGE. Assessing the acute toxicity of insecticides to the buff-tailed bumblebee (Bombus terrestris audax). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 166:104562. [PMID: 32448417 PMCID: PMC7294345 DOI: 10.1016/j.pestbp.2020.104562] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 02/28/2020] [Accepted: 03/01/2020] [Indexed: 05/21/2023]
Abstract
The buff-tailed bumblebee, Bombus terrestris audax is an important pollinator within both landscape ecosystems and agricultural crops. During their lifetime bumblebees are regularly challenged by various environmental stressors including insecticides. Historically the honey bee (Apis mellifera spp.) has been used as an 'indicator' species for 'standard' ecotoxicological testing, but it has been suggested that it is not always a good proxy for other eusocial or solitary bees. To investigate this, the susceptibility of B. terrestris to selected pesticides within the neonicotinoid, pyrethroid and organophosphate classes was examined using acute insecticide bioassays. Acute oral and topical LD50 values for B. terrestris against these insecticides were broadly consistent with published results for A. mellifera. For the neonicotinoids, imidacloprid was highly toxic, but thiacloprid and acetamiprid were practically non-toxic. For pyrethroids, deltamethrin was highly toxic, but tau-fluvalinate only slightly toxic. For the organophosphates, chlorpyrifos was highly toxic, but coumaphos practically non-toxic. Bioassays using insecticides with common synergists enhanced the sensitivity of B. terrestris to several insecticides, suggesting detoxification enzymes may provide a level of protection against these compounds. The sensitivity of B. terrestris to compounds within three different insecticide classes is similar to that reported for honey bees, with marked variation in sensitivity to different insecticides within the same insecticide class observed in both species. This finding highlights the need to consider each compound within an insecticide class in isolation rather than extrapolating between different insecticides in the same class or sharing the same mode of action.
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Affiliation(s)
- Rebecca J Reid
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Bartlomiej J Troczka
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK; College of Life and Environmental Sciences, Biosciences, University of Exeter, Penryn Campus, Penryn, Cornwall, UK
| | - Laura Kor
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Emma Randall
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK; College of Life and Environmental Sciences, Biosciences, University of Exeter, Penryn Campus, Penryn, Cornwall, UK
| | - Martin S Williamson
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Linda M Field
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Ralf Nauen
- Bayer AG, Crop Science Division, Alfred Nobel-Strasse 50, 40789 Monheim, Germany
| | - Chris Bass
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK; College of Life and Environmental Sciences, Biosciences, University of Exeter, Penryn Campus, Penryn, Cornwall, UK.
| | - T G Emyr Davies
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK.
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Umetsu N, Shirai Y. Development of novel pesticides in the 21st century. JOURNAL OF PESTICIDE SCIENCE 2020; 45:54-74. [PMID: 33132734 PMCID: PMC7581488 DOI: 10.1584/jpestics.d20-201] [Citation(s) in RCA: 146] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
General trends and strategies for novel pesticides are summarized. Global pesticide sales and pesticide discovery research are also briefly reviewed. At least 105 chemical pesticides have been launched during the past decade or are under development: 43 fungicides, 34 insecticides/acaricides, 6 nematicides, 21 herbicides, and 1 herbicide safener. Most of them are safe to humans and environmentally friendly. The most developed fungicides are SDHI (succinate dehydrogenase inhibitors), DMI (demethylation inhibitors), QoI (quinone outside inhibitors), and QiI (quinone inside inhibitors). Due to the development of resistance to fungicides with existing modes of action, many fungicides possessing various novel modes of action have been launched or are under development. The trend of insecticide development is changing from organophosphorus, carbamate, and synthetic pyrethroids to nicotinic and diamide insecticides. During the past decade, compounds possessing a variety of novel modes of action have also been launched or are under development. Flupyradifurone and flupyrimin, exhibiting extremely low honeybee toxicity, have been developed and subjected to practical use. Herbicides possessing varied modes of action, such as acetolactate synthase, p-hydroxyphenylpyruvate dioxygenase, protoporphyrinogen oxidase, and very-long-chain fatty acid elongase inhibition, have been developed, but no herbicides possessing a novel mode action have commercialized in nearly 30 years. It is of interest that cyclopyrimorate, which was recently launched, and tetflupyrolimet, which is under development, have novel modes action: homogentisate solanesyltransferase (HST) and dihydroorotate dehydrogenase (DHODH) inhibition, respectively. The development of useful acaricides and nematicides is also progressing. Some natural product origin pesticides are getting attention.
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Affiliation(s)
- Noriharu Umetsu
- Kibi International University, Department of Agriculture
- To whom correspondence should be addressed. E-mail:
| | - Yuichi Shirai
- OAT Agrio Co., Ltd., Research and Development Division
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Nomura K, Kawase A, Ozoe Y, Banba S. Further characterization of distinct high-affinity binding sites for dinotefuran in the abdominal nerve cord of the American cockroach Periplaneta americana (Blattodea). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 165:104554. [PMID: 32359545 DOI: 10.1016/j.pestbp.2020.104554] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 06/11/2023]
Abstract
Dinotefuran (DTF) is a systemic neonicotinoid insecticide characterized by a tetrahydrofuran ring. In the present study, we examined the characteristics of DTF binding to native nicotinic acetylcholine receptors (nAChRs) expressed in the American cockroach Periplaneta americana using radioligand-binding methods. The Scatchard analysis, using [3H]imidacloprid (IMI), indicated that IMI has a single class of high-affinity binding sites in the P. americana nerve cord. In contrast, the Scatchard analysis using [3H]DTF indicated that DTF has two different classes of binding sites. Both DTF and IMI were found to bind to one of the classes, for which DTF showed low affinity. The other class, for which DTF showed high affinity, was localized in the abdominal nerve cord but not in the thoracic nerve cord. IMI showed low affinity for the high-affinity DTF binding sites. Our data suggest that DTF binds with high affinity to a nAChR subtype distinct from the high-affinity subtype for IMI. This difference might be responsible, at least in part, for the difference in resistance development to DTF and IMI in P. americana.
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Affiliation(s)
- Kazuki Nomura
- Agrochemicals Research Center, Mitsui Chemicals Agro, Inc., Mobara, Chiba 297-0017, Japan
| | - Ayumi Kawase
- Development Department, Mitsui Chemicals Agro, Inc., Chuo-ku, Tokyo 103-0027, Japan
| | - Yoshihisa Ozoe
- Faculty of Life and Environmental Science, Shimane University, Matsue, Shimane 690-8504, Japan
| | - Shinichi Banba
- Agrochemicals Research Center, Mitsui Chemicals Agro, Inc., Mobara, Chiba 297-0017, Japan.
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35
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Chen T, Wu W, Weng Z. Visible-light photoredox catalyzed synthesis of polysubstituted furfuryl trifluoroacetamide derivatives. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130751] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kuzmina OM, Weisel M, Narine AA. 5‐Membered Mesoionic Insecticides: Synthesis and Evaluation of 1,3,4‐Thiadiazol‐4‐ium‐2‐olates with High Affinity for the Insect Nicotinic Acetylcholine Receptor. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900637] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Martin Weisel
- BASF SE Carl‐Bosch‐Strasse 38 67056 Ludwigshafen Germany
| | - Arun A. Narine
- BASF SE Carl‐Bosch‐Strasse 38 67056 Ludwigshafen Germany
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37
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Ihara M, Matsuda K. Neonicotinoids: molecular mechanisms of action, insights into resistance and impact on pollinators. CURRENT OPINION IN INSECT SCIENCE 2018; 30:86-92. [PMID: 30553491 DOI: 10.1016/j.cois.2018.09.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 09/14/2018] [Accepted: 09/19/2018] [Indexed: 06/09/2023]
Abstract
Neonicotinoids are insecticides that target insect nicotinic acetylcholine receptors (nAChRs), exhibiting high selective toxicity to insects over vertebrates and good systemic activity in crop plants. For these reasons, neonicotinoids currently make up ∼30% of insecticide sales worldwide. However, due to their adverse impact on pollinators such as honey bees and bumble bees, neonicotinoids are being banned from the EU, and other countries may follow. It is therefore crucial to understand the mechanism underlying neonicotinoid actions on pollinators as well as on the nAChRs of pests, with a view to understanding their selectivity. Here we review the molecular mechanisms of neonicotinoid actions at an atomic level, through structural and resistance mechanism studies and propose relevant research topics for further studies on the future of pest management.
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Affiliation(s)
- Makoto Ihara
- Department of Applied Biological Chemistry, Faculty of Agriculture, Kindai University, 3327-204 Nakamachi, Nara 631-8505, Japan.
| | - Kazuhiko Matsuda
- Department of Applied Biological Chemistry, Faculty of Agriculture, Kindai University, 3327-204 Nakamachi, Nara 631-8505, Japan; Agricultural Technology and Innovation Research Institute, Kindai University, 3327-204 Nakamachi, Nara 631-8505, Japan.
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Yang R, Lv M, Xu H. Synthesis of Piperine Analogs Containing Isoxazoline/Pyrazoline Scaffold and Their Pesticidal Bioactivities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11254-11264. [PMID: 30295024 DOI: 10.1021/acs.jafc.8b03690] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In continuation of our program to discover new potential pesticidal agents, thirty-one piperine analogs containing isoxazoline/pyrazoline scaffold were prepared, and confirmed by infrared spectra, proton/carbon-13 nuclear magnetic resonance spectra, and high-resolution mass spectra. The structures of compounds VIIb and VIIIc were further determined by 1H-1H COSY spectra. Especially the configuration of compound VIIIc was unambiguously confirmed by single-crystal X-ray diffraction. Their pesticidal activities were evaluated against three serious and typically crop-threatening agricultural pests, Tetranychus cinnabarinus Boisduval (spider mite), Mythimna separata Walker (Oriental armyworm), and Plutella xylostella Linnaeus (diamondback moth). Compounds VIIIb and VIIIc exhibited greater than 40-fold more potent acaricidal activity than the lead compound piperine against T. cinnabarinus. Notably, compounds VIa-c exhibited more pronounced oral toxicity against P. xylostella than toosendanin; compounds VIb and VIc displayed more promising growth inhibitory activity against M. separata than toosendanin. It demonstrated that the methylenedioxy and isoxazoline scaffolds were important for the oral toxicity and growth inhibitory activity against P. xylostella and M. separata, respectively; the ethylenedioxy and isoxazoline scaffolds were vital for the acaricidal activity against T. cinnabarinus. Moreover, compounds VIb, VIIf, and VIIIc showed very low toxicity against NRK-52E cells.
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Affiliation(s)
- Ruige Yang
- Research Institute of Pesticidal Design & Synthesis, College of Chemistry and Pharmacy/Plant Protection , Northwest A&F University , Yangling 712100 , Shaanxi Province , China
| | - Min Lv
- Research Institute of Pesticidal Design & Synthesis, College of Chemistry and Pharmacy/Plant Protection , Northwest A&F University , Yangling 712100 , Shaanxi Province , China
| | - Hui Xu
- Research Institute of Pesticidal Design & Synthesis, College of Chemistry and Pharmacy/Plant Protection , Northwest A&F University , Yangling 712100 , Shaanxi Province , China
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Taillebois E, Cartereau A, Jones AK, Thany SH. Neonicotinoid insecticides mode of action on insect nicotinic acetylcholine receptors using binding studies. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 151:59-66. [PMID: 30704714 DOI: 10.1016/j.pestbp.2018.04.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 04/14/2018] [Accepted: 04/17/2018] [Indexed: 06/09/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) are the main target of neonicotinoid insecticides, which are widely used in crop protection against insect pests. Electrophysiological and molecular approaches have demonstrated the presence of several nAChR subtypes with different affinities for neonicotinoid insecticides. However, the precise mode of action of neonicotinoids on insect nAChRs remains to be elucidated. Radioligand binding studies with [3H]-α-bungarotoxin and [3H]-imidacloprid have proved instructive in understanding ligand binding interactions between insect nAChRs and neonicotinoid insecticides. The precise binding site interactions have been established using membranes from whole body and specific tissues. In this review, we discuss findings concerning the number of nAChR binding sites against neonicotinoid insecticides from radioligand binding studies on native tissues. We summarize the data available in the literature and compare the binding properties of the most commonly used neonicotinoid insecticides in several insect species. Finally, we demonstrate that neonicotinoid-nAChR binding sites are also linked to biological samples used and insect species.
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Affiliation(s)
- Emiliane Taillebois
- Université François Rabelais de Tours, Laboratoire Nutrition, Croissance et Cancer, INSERM 1069, 37032 Tours, France
| | - Alison Cartereau
- Université d'Orléans, LBLGC USC INRA 1328, 1 rue de Chartres, 45067 Orléans, France
| | - Andrew K Jones
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
| | - Steeve H Thany
- Université d'Orléans, LBLGC USC INRA 1328, 1 rue de Chartres, 45067 Orléans, France.
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Wu X, Li W, Guo P, Zhang Z, Xu H. Rapid Trace Detection and Isomer Quantitation of Pesticide Residues via Matrix-Assisted Laser Desorption/Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:3966-3974. [PMID: 29589938 DOI: 10.1021/acs.jafc.8b00427] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Matrix-assisted laser desorption/ionization Fourier transform ion cyclotron resonance mass spectrometry (MALDI-FTICR-MS) has been applied for rapid, sensitive, undisputed, and quantitative detection of pesticide residues on fresh leaves with little sample pretreatment. Various pesticides (insecticides, bactericides, herbicides, and acaricides) are detected directly in the complex matrix with excellent limits of detection down to 4 μg/L. FTICR-MS could unambiguously identify pesticides with tiny mass differences (∼0.017 75 Da), thereby avoiding false-positive results. Remarkably, pesticide isomers can be totally discriminated by use of diagnostic fragments, and quantitative analysis of pesticide isomers is demonstrated. The present results expand the horizons of the MALDI-FTICR-MS platform in the reliable determination of pesticides, with integrated advantages of ultrahigh mass resolution and accuracy. This method provides growing evidence for the resultant detrimental effects of pesticides, expediting the identification and evaluation of innovative pesticides.
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Affiliation(s)
- Xinzhou Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education , South China Agricultural University , Guangzhou 510642 , China
| | - Weifeng Li
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals and Guangdong Engineering and Technology Research Center for Ambient Mass Spectrometry , Guangdong Institute of Analysis , Guangzhou 510070 , China
| | - Pengran Guo
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals and Guangdong Engineering and Technology Research Center for Ambient Mass Spectrometry , Guangdong Institute of Analysis , Guangzhou 510070 , China
| | - Zhixiang Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education , South China Agricultural University , Guangzhou 510642 , China
| | - Hanhong Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education , South China Agricultural University , Guangzhou 510642 , China
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