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Uğurlu P, Satar Eİ, Ünlü E. Toxic effects of commercial grade indoxacarb and endosulfan on Gammarus kischineffensis (Schellenberg, 1937) (Crustacea: Amphipoda). CHEMOSPHERE 2024; 360:142387. [PMID: 38801905 DOI: 10.1016/j.chemosphere.2024.142387] [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: 12/12/2023] [Revised: 03/22/2024] [Accepted: 05/19/2024] [Indexed: 05/29/2024]
Abstract
This study was designed to investigate the toxic effects of two frequently used commercial insecticides containing endosulfan and indoxacarb on a freshwater amphipod Gammarus kischineffensis. In this context, the 24, 48, 72 and 96 h LC50 values of these pesticides were determined for G. kischineffensis. Then the histopathological effects of these pesticides on the gill tissues of this species were evaluated. At the end of the study, the 96 h LC50 values of commercial-grade endosulfan and indoxacarb for G. kischineffensis were determined as 1.861 μg L-1 and 20.212 mg L-1, respectively. Histopathologically, the most common histopathological alterations in individuals exposed to sublethal concentrations of commercial-grade endosulfan and indoxacarb were pillar cell hypertrophy resulting in atrophy of the hemocoelic space and hemocytic infiltration. Considering these results, it can be said that commercial-grade endosulfan is extremely and indoxacarb is slightly toxic to G. kischineffensis.
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Affiliation(s)
- Pelin Uğurlu
- Dicle University Science and Technology Application and Research Center, 21280, Diyarbakır, Turkey; Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Dicle University, 21280, Diyarbakir, Turkey.
| | - Elif İpek Satar
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Dicle University, 21280, Diyarbakir, Turkey
| | - Erhan Ünlü
- Department of Biology, Section of Hydrobiology, Faculty of Science, Dicle University, 21280, Diyarbakir, Turkey
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2
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Aboutalebian-Soureshjani A, Rafiee-Dastjerdi H, Naseri B, Hassanpour M, Khajehali J. Indoxacarb resistance in Iranian populations of Tuta absoluta (Lepidoptera: Gelechiidae): Cross-resistance, biochemical and molecular mechanisms. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 196:105633. [PMID: 37945235 DOI: 10.1016/j.pestbp.2023.105633] [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: 08/03/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 11/12/2023]
Abstract
Tuta absoluta (Meyrick) is an invasive tomato pest that occurs worldwide, including Iran. This study investigates the occurrence of resistance to indoxacarb, an oxadiazine insecticide, and the underlying mechanisms in Iranian populations of T. absoluta. Bioassays were performed on second-instar larvae using indoxacarb alone and in combination with three synergists: Piperonyl butoxide (PBO), diethyl maleate (DEM), and triphenyl phosphate (TPP). The activities of the main detoxification enzymes, including glutathione S-transferases (GST), general carboxylesterases (CarEs), and P450 monooxygenases (P450s), were evaluated. In addition, the presence of known amino acid substitutions in the IV segment 6 domain of the T. absoluta sodium channel was investigated. The results showed that resistance rates to indoxacarb in Iranian populations ranged from 2.37- to 14.45-fold. However, pretreatment with synergists did not significantly increase the toxicity of indoxacarb. Enzyme assays showed that Ardabil (Ar) and Kerman (Kr) populations had the highest CarEs activity, while Ar population showed the highest P450 activity. However, the observed increases in enzyme activities were <2-fold. Two indoxacarb resistance mutations, F1845Y and V1848I, were detected. Apart from a significant and positive correlation between LC50 values of indoxacarb and thiocyclam hydrogen oxalate, no cross-resistance between indoxacarb and other insecticides was detected. Overall, these results suggest that populations of T. absoluta in Iran have developed resistance to indoxacarb, primarily through changes at the target site.
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Affiliation(s)
| | - Hooshang Rafiee-Dastjerdi
- Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardabil, Iran.
| | - Bahram Naseri
- Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Mahdi Hassanpour
- Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Jahangir Khajehali
- Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran.
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Lin Q, Deng P, Feng T, Ou G, Mou L, Zhang Y. Enantioselectivity of indoxacarb enantiomers in Bombyx mori larvae: toxicity, bioaccumulation and biotransformation. PEST MANAGEMENT SCIENCE 2023; 79:2353-2364. [PMID: 36797221 DOI: 10.1002/ps.7412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 01/08/2023] [Accepted: 02/16/2023] [Indexed: 06/02/2023]
Abstract
BACKGROUND Indoxacarb is a chiral insecticide with excellent insecticidal activity against lepidopterous insects. Because of their enantioselectivity, chiral pesticides' environmental behavior at the enantiomeric level has been highlighted. The chiral stability, enantioselective bioaccumulation, biotransformation behavior of indoxacarb to a non-target insect silkworm are still unclear. RESULTS A chiral analysis method for indoxacarb and its metabolite DCJW in silkworm was developed using liquid chromatography and high-resolution mass spectrometry (HPLC/HRMS). In silkworms, the recoveries of indoxacarb and DCJW were 86.06%-104.52% with relative standard deviation (RSD) < 9.01%. The 96-h lethal concentration (LC50 ) values of R-indoxacarb, S-indoxacarb, and enriched S-indoxacarb (2.333 S/1R) were 1.08 × 102 , 1.92, and 6.89 mg a.i. L-1 , respectively, according to the acute toxicity test results. When silkworm larvae were exposed to 1/50 of the LC50 concentration, the bioconcentration factor (BCF) of R-indoxacarb was 0.0296-0.318, and the BCF of S-indoxacarb was 0.0125-0.211. In silkworm larvae, the amount of R-DCJW produced by R-indoxacarb was 0.00610 to 2.34 times that of the parent R-indoxacarb, and the amount of S-DCJW produced by S-indoxacarb was 0.125-36.9 times that of the parent S-indoxacarb. CONCLUSION There was no chiral transition from S-indoxacarb to R-indoxacarb or a transformation from R-indoxacarb to S-indoxacarb. Indoxacarb was preferentially bioaccumulated in silkworm larva, while S-indoxacarb bioconversion into the metabolite S-DCJW was much greater than R-indoxacarb bioconversion into R-DCJW. This study could improve understanding of the indoxacarb accumulation and transformation process in insects, as well as provide more scientific data for indoxacarb environmental and ecological risk assessment. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Qiao Lin
- 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, China
| | - Pengyu Deng
- 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, China
| | - Tianyou Feng
- 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, China
| | - Guipeng Ou
- 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, China
| | - Lianhong Mou
- 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, China
| | - Yuping Zhang
- 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, China
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Niklas B, Rydzewski J, Lapied B, Nowak W. Toward Overcoming Pyrethroid Resistance in Mosquito Control: The Role of Sodium Channel Blocker Insecticides. Int J Mol Sci 2023; 24:10334. [PMID: 37373481 DOI: 10.3390/ijms241210334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Diseases spread by mosquitoes lead to the death of 700,000 people each year. The main way to reduce transmission is vector control by biting prevention with chemicals. However, the most commonly used insecticides lose efficacy due to the growing resistance. Voltage-gated sodium channels (VGSCs), membrane proteins responsible for the depolarizing phase of an action potential, are targeted by a broad range of neurotoxins, including pyrethroids and sodium channel blocker insecticides (SCBIs). Reduced sensitivity of the target protein due to the point mutations threatened malaria control with pyrethroids. Although SCBIs-indoxacarb (a pre-insecticide bioactivated to DCJW in insects) and metaflumizone-are used in agriculture only, they emerge as promising candidates in mosquito control. Therefore, a thorough understanding of molecular mechanisms of SCBIs action is urgently needed to break the resistance and stop disease transmission. In this study, by performing an extensive combination of equilibrium and enhanced sampling molecular dynamics simulations (3.2 μs in total), we found the DIII-DIV fenestration to be the most probable entry route of DCJW to the central cavity of mosquito VGSC. Our study revealed that F1852 is crucial in limiting SCBI access to their binding site. Our results explain the role of the F1852T mutation found in resistant insects and the increased toxicity of DCJW compared to its bulkier parent compound, indoxacarb. We also delineated residues that contribute to both SCBIs and non-ester pyrethroid etofenprox binding and thus could be involved in the target site cross-resistance.
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Affiliation(s)
- Beata Niklas
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
| | - Jakub Rydzewski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
| | - Bruno Lapied
- University Angers, INRAE, SIFCIR, SFR QUASAV, F-49045 Angers, France
| | - Wieslaw Nowak
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
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He Y, Yin H, Wang Y, Chu M, Li Y. Visible light-induced oxidative α-hydroxylation of β-dicarbonyl compounds catalyzed by ethylenediamine-copper(ii). RSC Adv 2023; 13:7843-7847. [PMID: 36909753 PMCID: PMC9996412 DOI: 10.1039/d2ra07411g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/01/2023] [Indexed: 03/12/2023] Open
Abstract
We have developed an efficient oxidative α-hydroxylation of β-keto esters with firstly using the structurally simple ethylenediamine-copper(ii) as a catalyst for β-keto esters activation and using visible light as the driving force for generating more active singlet oxygen (1O2) from triplet state oxygen (3O2) in the air, providing a series of α-hydroxy β-keto esters in excellent yields (up to 99%) under extremely low photosensitizer loading (0.01 mol%) and catalyst loading (1 mol%) within a short time. Moreover, the gram-scale synthesis showed the practical utility of this protocol.
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Affiliation(s)
- Yujie He
- College of Biological, Chemical Sciences and Engineering, Jiaxing University Jiaxing 314001 China
| | - Hao Yin
- Department of Green Chemistry and Technology, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Yifeng Wang
- Department of Green Chemistry and Technology, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Mingming Chu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University Jiaxing 314001 China
| | - Yiming Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University Jiaxing 314001 China
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He H, Tummalapalli KSS, Zhu L, Chen M, Krishnamurthy S, Antilla JC. Asymmetric Rubottom-Type Oxidation Catalyzed by Chiral Calcium Phosphates. Chemistry 2023; 29:e202203720. [PMID: 36541518 DOI: 10.1002/chem.202203720] [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: 11/29/2022] [Revised: 12/16/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
A highly efficient catalytic asymmetric Rubottom-type oxidation is described. Using meta-chloroperbenzoic acid (m-CPBA) as the oxidant and chiral calcium phosphate as the catalyst, the facile transformation enables direct hydroxylation of N-Boc oxindoles and β-ketoesters in high yields (up to 99 %) and in a highly enantioenriched fashion (up to >99 % ee). The application of the established method was demonstrated by the synthesis of a pharmaceutically important 3-hydroxyoxindole with excellent enantiocontrol.
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Affiliation(s)
- Hualing He
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
| | | | - Linfei Zhu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
| | - Minglei Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
| | - Suvratha Krishnamurthy
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
| | - Jon C Antilla
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
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Anjum F, Wright DJ. Foliar Residual Toxicity of Insecticides to Brassica Pests and Their Natural Enemies. JOURNAL OF ECONOMIC ENTOMOLOGY 2023; 116:153-159. [PMID: 36762676 DOI: 10.1093/jee/toac188] [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: 08/16/2022] [Indexed: 06/18/2023]
Abstract
Overuse of pesticides can result in the development of resistance, secondary pest outbreaks, and pest resurgence due to a reduction in natural enemies. The present study compares the residual toxicity of lambda-cyhalothrin, a relatively nonselective insecticide, with abamectin, indoxacarb, and spinosad, compounds which have been reported to be less harmful to arthropod natural enemies. Two key cosmopolitan pests of crucifer crops, (Plutella xylostella) and (Myzus persicae), and two of their respective hymenopteran parasitoids, (Cotesia vestalis) and (Aphidius colemani) were used as representative pests and natural enemies. The pyrethroid lambda-cyhalothrin was found to be the most persistent toxicant against both pest and both parasitoid species tested, while the lactones abamectin and spinosad were the least persistent toxicants. A leaf wax stripping technique was used to compare the contact toxicity of insecticide residues against adult C. vestalis and A. colemani in the epicuticular wax layer. For each compound, removal of epicuticular wax reduced the 24 h residual toxicity (LC50) of fresh deposits (day 0) by about an order of magnitude against C. vestalis. A second residual toxicity experiment showed that removal of epicuticular wax significantly reduced the residual toxicity of each compound against A. colemani at 0, 7, and 14 d after application, with little or no detectable residual activity for the oxadiazine indoxacarb or abamectin/spinosad respectively after 14 d. The present data supports the view that in addition to the intrinsic toxicity of insecticides to natural enemies, differences in their persistence as foliar residues should also be considered in IPM systems.
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Affiliation(s)
- Farida Anjum
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, SL5 7PY, UK
| | - Denis J Wright
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, SL5 7PY, UK
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8
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Wang ZJ, Wang NM, Yu QT, Xue CB. Sublethal effects of an indoxacarb enantiomer insecticide on Plutella xylostella caterpillar and Chrysoperla sinica predator. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 249:114400. [PMID: 36508809 DOI: 10.1016/j.ecoenv.2022.114400] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 12/04/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Plutella xylostella (L.) is a migratory species and an important insect pest of cruciferous crops worldwide, and Chrysoperla sinica (Tjeder) is a predaceous insect of agricultural and forest pests in the field. Indoxacarb has two enantiomers: (+)-S-indoxacarb and (-)-R-indoxacarb. This study was conducted to clarify the selective toxicity and sublethal effects of both enantiomers on P. xylostella and C. sinica. The (+)-S-indoxacarb isomer had greater acute toxicity to P. xylostella and C. sinica, while (-)-R-indoxacarb had less toxicity to P. xylostella and low toxicity to C. sinica. Lethal concentration 25 % (LC25) of (+)-S-indoxacarb had significant effects on the development, population, and fecundity of P. xylostella and C. sinica. The LC25 concentration of (-)-R-indoxacarb had a significant effect on the oviposition of P. xylostella. The field recommended concentration of (-)-R-indoxacarb significantly affected the pupal stage, adult survival rate, oviposition, and larval survival rate of C. sinica. Both enantiomers could significantly affect the search efficiency, successful attack rate, prey handling time, and maximum predation of C. sinica larvae, and the effects of (+)-S-indoxacarb alone were greater than those of (-)-R-indoxacarb. This study provided evidence of the different selective toxicity, sublethal effects of indoxacarb enantiomers on P. xylostella and C. sinica, which of the results could provide a basis for more rational use of indoxacarb in ecosystems.
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Affiliation(s)
- Zi-Jian Wang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Nian-Meng Wang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Qi-Tong Yu
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Chao-Bin Xue
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, China.
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Kula K, Łapczuk A, Sadowski M, Kras J, Zawadzińska K, Demchuk OM, Gaurav GK, Wróblewska A, Jasiński R. On the Question of the Formation of Nitro-Functionalized 2,4-Pyrazole Analogs on the Basis of Nitrylimine Molecular Systems and 3,3,3-Trichloro-1-Nitroprop-1-Ene. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238409. [PMID: 36500503 PMCID: PMC9739753 DOI: 10.3390/molecules27238409] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/03/2022]
Abstract
Experimental and theoretical studies on the reaction between (E)-3,3,3-trichloro-1-nitroprop-1-ene and N-(4-bromophenyl)-C-arylnitrylimine were performed. It was found that the title process unexpectedly led to 1-(4-bromophenyl)-3-phenyl-5-nitropyrazole instead of the expected Δ2-pyrazoline molecular system. This was the result of a unique CHCl3 elimination process. The observed mechanism of transformation was explained in the framework of the molecular electron density theory (MEDT). The theoretical results showed that both of the possible channels of [3 + 2] cycloaddition were favorable from a kinetic point of view, due to which the creation of 1-(4-bromophenyl)-3-aryl-4-tricholomethyl-5-nitro-Δ2-pyrazoline was more probable. On the other hand, according to the experimental data, the presented reactions occurred with full regioselectivity.
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Affiliation(s)
- Karolina Kula
- Department of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
- Correspondence: (K.K.); (A.Ł.); (R.J.)
| | - Agnieszka Łapczuk
- Department of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
- Correspondence: (K.K.); (A.Ł.); (R.J.)
| | - Mikołaj Sadowski
- Department of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
| | - Jowita Kras
- Department of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
| | - Karolina Zawadzińska
- Department of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
| | - Oleg M. Demchuk
- Faculty of Medicine, The John Paul II Catholic University of Lublin, Konstantynow 1J, 20-708 Lublin, Poland
| | - Gajendra Kumar Gaurav
- Sustainable Process Integration Laboratory—SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology—VUT Brno, Technická 2896/2, 616-69 Brno, Czech Republic
| | - Aneta Wróblewska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Radomir Jasiński
- Department of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
- Correspondence: (K.K.); (A.Ł.); (R.J.)
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Hafeez M, Li X, Ullah F, Zhang Z, Zhang J, Huang J, Fernández-Grandon GM, Khan MM, Siddiqui JA, Chen L, Ren XY, Zhou S, Lou Y, Lu Y. Down-Regulation of P450 Genes Enhances Susceptibility to Indoxacarb and Alters Physiology and Development of Fall Armyworm, Spodoptera frugipreda (Lepidoptera: Noctuidae). Front Physiol 2022; 13:884447. [PMID: 35615670 PMCID: PMC9125154 DOI: 10.3389/fphys.2022.884447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 04/11/2022] [Indexed: 11/13/2022] Open
Abstract
The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith), is a pest of many important crops globally. Effective control is challenging, with the pest exhibiting resistance to different synthetic pesticides across various groups. However, the mechanisms employed by resistant insects for overexpression of relevant detoxification genes remain unclear. The activity of detoxification enzymes was investigated in this study. Additionally, using RNA interference (RNAi), a functional analysis was completed of two P450s genes in an indoxacarb resistant population of fall armyworms. Elevated resistance levels (resistance ratio = 31.37-fold) in indoxacarb-selected populations of FAW were observed after 14 generations. The qRT-PCR showed higher expression of two cytochrome P450 genes, CYP321A7 and CYP6AE43, in this selected population compared to the control population. RNAi was applied to knock down the P450 dsCYP321A7 and dsCYP6AE43 genes in the FAW larvae. Droplet feeding of the dsRNAs (CYP321A7 and CYP6AE43) via an artificial diet significantly increased mortality rates in the indoxacarb treated population. A shorter larval developmental time of FAW was detected in all dsRNAs-fed larvae. Correspondingly, larval mass was reduced by dsRNAs in indoxacarb resistant populations of fall armyworm. Larval feeding assays demonstrate that dsRNAs targeting, specifically of CYP321A7 and CYP6AE43 enzymes, could be a beneficial technique in the management of indoxacarb resistant populations. Further study on the potential use of dsRNA and its application should be conducted in efforts to counter the development of resistance in FAW against various insecticides in the field.
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Affiliation(s)
- Muhammad Hafeez
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Xiaowei Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Farman Ullah
- Department of Plant Biosecurity, College of Plant Protection, China Agricultural University, Beijing, China
| | - Zhijun Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jinming Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jun Huang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | | | - Muhammad Musa Khan
- Key Laboratory of Bio-Pesticide Innovation and Application, South China Agricultural University, Guangzhou, China
| | - Junaid Ali Siddiqui
- Red Imported Fire Ant Research Centre, South China Agricultural University, Guangzhou, China
| | - Limin Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Integrated Plant Protection Center, Lishui Academy of Agricultural and Forestry Sciences, Lishui, China
| | - Xiao Yun Ren
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Shuxing Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yonggen Lou
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
- *Correspondence: Yonggen Lou, ; Yaobin Lu,
| | - Yaobin Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- *Correspondence: Yonggen Lou, ; Yaobin Lu,
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11
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Rezende-Teixeira P, Dusi RG, Jimenez PC, Espindola LS, Costa-Lotufo LV. What can we learn from commercial insecticides? Efficacy, toxicity, environmental impacts, and future developments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 300:118983. [PMID: 35151812 DOI: 10.1016/j.envpol.2022.118983] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/26/2022] [Accepted: 02/08/2022] [Indexed: 05/27/2023]
Abstract
Worldwide pesticide usage was estimated in up to 3.5 million tons in 2020. The number of approved products varies among different countries, however, in Brazil, there are nearly 5000 of such products available. Among them, insecticides correspond to a group of mounting importance for controlling crop pests and disease-associated vectors in public health. Unfortunately, resistance to commercially approved insecticides is commonly observed, limiting the use of these products. Thus, the search for more effective and environmentally friendly products is both a challenge and a necessity since several insecticides are no longer allowed in many countries. In this review, we discuss the historical strategies used in the development of modern insecticides, including chemical structure alterations, mechanism of action and their impact on insecticidal activity. The environmental impact of each pesticide class is also discussed, with persistence data and activity on non-target organisms, along with the human toxicological effect. By tracing the historical route of discovery and development of blockbuster pesticides like DDT, pyrethroids and organophosphates, we also aim to categorize and relate the successful chemical alterations and novel pesticide development strategies that resulted in safer alternatives. A brief discussion on the Brazilian registration procedure and a perspective of insecticides currently approved in the country was also included.
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Affiliation(s)
- Paula Rezende-Teixeira
- Laboratório de Farmacologia Marinha, Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, 05508-900, São Paulo, SP, Brazil
| | - Renata G Dusi
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, 70910-900, Brazil
| | - Paula C Jimenez
- Laboratório de Bioprospecção de Organismos Marinhos, Instituto do Mar, Universidade Federal de São Paulo, Santos, SP, Brazil
| | - Laila S Espindola
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, 70910-900, Brazil
| | - Letícia V Costa-Lotufo
- Laboratório de Farmacologia Marinha, Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, 05508-900, São Paulo, SP, Brazil.
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12
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Batista CH, Plata-Rueda A, Zanuncio JC, Serrão JE, Martínez LC. Indoxacarb effects on non-target predator, Podisus distinctus (Hemiptera: Pentatomidae). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:29967-29975. [PMID: 34997483 DOI: 10.1007/s11356-021-17988-0] [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] [Received: 07/30/2021] [Accepted: 12/02/2021] [Indexed: 06/14/2023]
Abstract
Forestry pest management includes biological and chemical methods of pest control. Using insecticides and natural enemies can be compatible in forest pest management programs. The compatibility of the predatory stink bug Podisus distinctus with the insecticide indoxacarb, used in forestry, needs to be evaluated in Brazil. This study investigated the mortality, survival, respiration, preference, prey consumption, and locomotor activity of P. distinctus adults exposed to indoxacarb. In concentration-mortality bioassays, the lethality of indoxacarb (LC50 = 2.62 g L-1 and LC90 = 6.11 g L-1) was confirmed in P. distinctus adults. The survival rate was 100% in predator insects not exposed to indoxacarb, declining to 40.7% in predator insects exposed to 2.62 g L-1 and 0.1% in predators treated with 6.11 g L-1. Indoxacarb reduced the respiration of P. distinctus from 18.45 to 14.41 µL CO2 h-1 at 2.62 g L-1 for up to 3 h after insecticide exposure, inhibiting food consumption and displaying hyperexcitation. The harmful effects of indoxacarb to the natural enemy suggest that it should be better assessed for use with P. distinctus for pest management in forestry.
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Affiliation(s)
- Carlos Henrique Batista
- Department of Crop Science, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Angelica Plata-Rueda
- Department of Entomology, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - José Cola Zanuncio
- Department of Entomology, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - José Eduardo Serrão
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Luis Carlos Martínez
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
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13
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Qiao Z, Fu W, Zhang Y, Chen R, Xu Z, Li Z, Shao X. Azobenzene-Semicarbazone Enables Optical Control of Insect Sodium Channels and Behavior. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:15554-15561. [PMID: 34905925 DOI: 10.1021/acs.jafc.1c06404] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Photopharmacology uses molecular photoswitches to establish control over the action of bioactive molecules. The application of photopharmacology in the research of invertebrate sodium channels has not been investigated. Here we report several photochromic ligands of metaflumizone. One ligand, termed ABM04, underwent reversible trans-cis isomerization under ultraviolet or blue light irradiation. cis-ABM04 had excellent larvicidal activity against mosquito larvae with an LC50 value of 4.39 μM and showed insecticidal activity against Mythimna separata with an LC50 value of 7.19 μM. However, trans-ABM04 was not found to have biological activity. ABM04 (10 μM) can induce depolarization of dorsal unpaired median neurons and enable the real-time photoregulation of mosquito larval behavior. The precise regulation of invertebrate sodium channels is realized for the first time, which provides a new strategy for the basic and accurate research of invertebrate sodium channels.
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Affiliation(s)
- Zhi Qiao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wen Fu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yongchao Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Ruijia Chen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zhiping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
- State Key Laboratory of Bioreactor Engineering, 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, P. R. China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
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14
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Rukke BA, Hage M, Aak A. Spatiotemporal elements in a poisoned bait strategy against the long-tailed silverfish (Lepismatidae: Zygentoma). PLoS One 2021; 16:e0260536. [PMID: 34843543 PMCID: PMC8629293 DOI: 10.1371/journal.pone.0260536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 11/11/2021] [Indexed: 11/24/2022] Open
Abstract
The long-tailed silverfish Ctenolepisma longicaudatum (Lepismatidae: Zygentoma) is a nuisance problem in buildings and a major concern in museums, libraries and archives where it cause damage to historical and priceless items. We used laboratory bioassays and two field studies of infested buildings to evaluate spatial and temporal elements of a poisoned bait strategy. In both laboratory experiments and field studies, the efficiency of poisoned bait with indoxacarb as the active ingredient was significantly improved by placing many small bait droplets evenly distributed along all edges of the treated area compared to more clustered distributions. Extended duration of bait presence and removal of competing food sources improved the control effect significantly in the laboratory bioassays. Bait-treated populations also showed a significant decline in the number of eggs deposited and emergence of new nymphs. The study supports poisoned bait as an efficient and low risk approach against the long-tailed silverfish in which extended duration of bait presence, wide distribution of bait droplets in combination with sanitation was crucial for control in the infested premises.
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Affiliation(s)
- Bjørn Arne Rukke
- Department of Pest Control, Norwegian Institute of Public Health, Oslo, Norway
| | - Morten Hage
- Department of Pest Control, Norwegian Institute of Public Health, Oslo, Norway
| | - Anders Aak
- Department of Pest Control, Norwegian Institute of Public Health, Oslo, Norway
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15
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Yin H, Wang CJ, Zhao YG, He ZY, Chu MM, Wang YF, Xu DQ. Asymmetric bis(oxazoline)-Ni(II) catalyzed α-hydroxylation of cyclic β-keto esters under visible light. Org Biomol Chem 2021; 19:6588-6592. [PMID: 34023869 DOI: 10.1039/d1ob00546d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Using visible light as a driving force and molecular oxygen as a green oxidant, we developed bis(oxazoline)-Ni(acac)2 catalyzed asymmetric α-hydroxylation of β-keto esters under low photosensitizer loading, and the protocol enabled an efficient transformation to provide the desired chiral α-hydroxy-β-keto esters in high yields (up to 99%) and enantioselectivities (up to 99% ee) at room temperature.
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Affiliation(s)
- Hao Yin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Chao-Jie Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Yu-Gen Zhao
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Zi-Yang He
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Ming-Ming Chu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, People's Republic of China.
| | - Yi-Feng Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
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16
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Zhao W, Zheng S, Zou J, Liang Y, Zhao C, Xu H. Synthesis of Novel Pesticidal N, N'-Disubstituted Sulfamide Derivatives Using Sulfur(VI) Fluorine Exchange Click Reaction. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5798-5803. [PMID: 34028259 DOI: 10.1021/acs.jafc.0c04194] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Sulfur(VI) fluorine exchange click reaction was applied to the highly efficient synthesis of new N,N'-disubstituted sulfamide (R1NH-SO2-NHR2) derivatives as pesticide candidates. Bioassays were conducted to evaluate both insecticidal and fungicidal activities of the target compounds. Preliminary results showed that the target molecules exhibited good bioactivities. In particular, insecticidal activities of compounds D25 and D21 against Plutella xylostella (LC50 = 2.42 and 3.87 μg·mL-1) were superior or adequate to that of commercial insecticide indoxacarb (LC50 = 3.99 μg·mL-1). Moreover, some compounds could also exhibit satisfactory fungicidal activity toward plant pathogens Pyricularia grisea, Botrytis cinerea, and Thanatephorus cucumeris. This work could bring new insights into the application of heterocyclic N,N'-disubstituted sulfamides as novel pesticides.
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Affiliation(s)
- Weijing Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Shijie Zheng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Jinwen Zou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Yunshi Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Chen Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Hanhong Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
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17
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Yang L, Kaziem AE, Lin Y, Li C, Tan Y, Huang S, Cheng D, Xu H, Zhang Z. Carboxylated β-cyclodextrin anchored hollow mesoporous silica enhances insecticidal activity and reduces the toxicity of indoxacarb. Carbohydr Polym 2021; 266:118150. [PMID: 34044957 DOI: 10.1016/j.carbpol.2021.118150] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/27/2021] [Accepted: 04/29/2021] [Indexed: 12/14/2022]
Abstract
In this study, a pesticide controlled release system with dual response characteristics of pH and enzyme triggering was developed. Indoxacarb (IDC) was loaded into hollow mesoporous silica (HMS) nanoparticles, carboxylated β-cyclodextrin (β-CD) acted as a capping molecule to couple with the amino-functionalized HMS, and their well-defined morphological structures were confirmed by scanning electron microscopy and transmission electron microscopy. The results showed that the prepared IDC loaded HMS-CD had high loading efficiency (26.42%, w/w) and showed excellent dual response properties to pH and the α-amylase enzyme. IDC loaded HMS-CD nanoparticles showed better insecticidal activity against Spodoptera frugiperda than applying the same dose of IDC emulsifiable concentrate, and the toxicity of IDC loaded HMS-CD to zebrafish was reduced by more than 5-fold, indicating that insecticide delivery systems based on β-CD-anchored HMS nanoparticles could potentially be applied for sustainable control of pests and reduce harm to non-target organisms and the environment.
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Affiliation(s)
- Liupeng Yang
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Amir E Kaziem
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China; Department of Environmental Agricultural Science, Institute of Environmental Studies and Research, Ain Shams University, Cairo 11566, Egypt
| | - Yigang Lin
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Chao Li
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Yuting Tan
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Suqing Huang
- Department of Environmental Agricultural Science, Institute of Environmental Studies and Research, Ain Shams University, Cairo 11566, Egypt
| | - Dongmei Cheng
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - HanHong Xu
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China.
| | - Zhixiang Zhang
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China.
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18
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Kaiser IS, Kanno RH, Bolzan A, Amaral FSA, Lira EC, Guidolin AS, Omoto C. Baseline Response, Monitoring, and Cross-Resistance of Spodoptera frugiperda (Lepidoptera: Noctuidae) to Sodium Channel Blocker Insecticides in Brazil. JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:903-913. [PMID: 33604658 DOI: 10.1093/jee/toab011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Indexed: 06/12/2023]
Abstract
Spodoptera frugiperda (J.E. Smith) is one of the key cross-crop pests in Brazilian agroecosystems. Field-evolved resistance of S. frugiperda to some conventional insecticides and Bt proteins has already been reported. Thus, the use of insecticides with new mode of action such as sodium channel blockers (indoxacarb and metaflumizone) could be an important tool in insecticide resistance management (IRM) programs. To implement a proactive IRM, we conducted baseline response and monitoring to indoxacarb and metaflumizone in 87 field populations of S. frugiperda collected from major maize-growing regions of Brazil from 2017 to 2020, estimated the frequency of resistance alleles to indoxacarb, and evaluated cross-resistance of indoxacarb and metaflumizone to some selected insecticides and Bt proteins. Low variation in susceptibility to indoxacarb (4.6-fold) and metaflumizone (2.6-fold) was detected in populations of S. frugiperda in 2017. The frequency of the resistance allele to indoxacarb was 0.0452 (0.0382-0.0527 CI 95%), by using F2 screen method. The mean survival at diagnostic concentration, based on CL99, varied from 0.2 to 12.2% for indoxacarb and from 0.0 to 12.7% for metaflumizone, confirming high susceptibility of S. frugiperda to these insecticides in Brazil. No cross-resistance was detected between sodium channel blocker insecticides and other insecticides (organophosphate, pyrethroid, benzoylurea, spinosyn, and diamide) and Bt proteins. These findings showed that sodium channel blocker insecticides are important candidates to be exploited in IRM strategies of S. frugiperda in Brazil.
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Affiliation(s)
- Ingrid S Kaiser
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Avenue Pádua Dias 11, Piracicaba, São Paulo, Brazil
| | - Rubens H Kanno
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Avenue Pádua Dias 11, Piracicaba, São Paulo, Brazil
| | - Anderson Bolzan
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Avenue Pádua Dias 11, Piracicaba, São Paulo, Brazil
| | - Fernando S A Amaral
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Avenue Pádua Dias 11, Piracicaba, São Paulo, Brazil
| | - Ewerton C Lira
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Avenue Pádua Dias 11, Piracicaba, São Paulo, Brazil
| | - Aline S Guidolin
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Avenue Pádua Dias 11, Piracicaba, São Paulo, Brazil
| | - Celso Omoto
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Avenue Pádua Dias 11, Piracicaba, São Paulo, Brazil
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19
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Li Y, Liang H, Qiu L. Enantioselective Bioaccumulation of the Chiral Insecticide Indoxacarb in Zebrafish (Danio rerio). ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:1007-1016. [PMID: 33238038 DOI: 10.1002/etc.4943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/08/2020] [Accepted: 11/21/2020] [Indexed: 06/11/2023]
Abstract
Indoxacarb is a typical chiral insecticide widely used in agricultural pest control. In the present study, zebrafish was used as a model animal to explore the enantioselective bioaccumulation behavior of indoxacarb to nontarget species in aquatic environments. Zebrafish were exposed to 0.025 and 0.1 mg/L rac-indoxacarb solution for 12 d under the semistatic method, and the bioconcentration factor (BCF) and enantiomeric fraction of zebrafish were investigated. The results showed that the (-)-R-indoxacarb preferentially accumulated in zebrafish. The BCF values at 0.025 mg/L exposure levels were 1079.8 and 83.4 L/kg for (-)-R-indoxacarb and (+)-S-indoxacarb after 12 d, respectively. The BCF values at 0.1 mg/L exposure levels were 1752.1 and 137.0 L/kg for (-)-R-indoxacarb and (+)-S-indoxacarb after 10 d, respectively. The half-life values of (-)-R-indoxacarb and (+)-S-indoxacarb were 3.47 and 2.05 d for 0.025 mg/L concentration exposure and 4.95 and 2.66 d for 0.1 mg/L concentration exposure, respectively. The enantiomeric fraction values were in the range of 0.48 to 0.55 and 0.89 to 1.00 for water and zebrafish samples, respectively. Studies on the enantioselective bioaccumulation behavior of indoxacarb will provide data for assessing the environmental fate and potential toxic effects of indoxacarb on aquatic organisms. Environ Toxicol Chem 2021;40:1007-1016. © 2020 SETAC.
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Affiliation(s)
- Yanhong Li
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
| | - Hongwu Liang
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
| | - Lihong Qiu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China
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20
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Zhang L, Su J, Xu X. Design and Synthesis of 1,2,4-Oxadiazine Derivatives as Promising Fungicide and Insecticide Lead Compound. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202101029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Development of a Poisoned Bait Strategy against the Silverfish Ctenolepisma longicaudata (Escherich, 1905). INSECTS 2020; 11:insects11120852. [PMID: 33271771 PMCID: PMC7760683 DOI: 10.3390/insects11120852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 11/13/2020] [Accepted: 11/28/2020] [Indexed: 11/16/2022]
Abstract
Pest management strives to be an efficient, yet healthy and environmentally safe control method, and the use of poisoned bait often fulfils these criteria. In the present study, we show that bait with indoxacarb as the active ingredient is highly efficient for controlling Ctenolepisma longicaudata (Escherich, 1905) and two of its relatives, Lepisma saccharina (Linnaeus, 1758) and Ctenolepisma calva (Ritter, 1910). Applying small bait droplets (size ~10 mg) along the walls of several types of buildings, at no more than 0.5 to 1.0 g bait per 100 m2, was a cost-efficient and safe strategy for the knockdown and eradication of C. longicaudata. During field experiments, the demography changed from an initial mixture of different stages to total dominance of early instars preceding the population collapse. Poisonous bait outcompeted mass-trapping with sticky-traps and conventional insect spray treatment for the efficient control of C. longicaudata in apartments. Different droplet densities (1 vs. 0.5/m2) and active ingredients (indoxacarb vs. clothianidin) did not have different effects in field experiments. These results show that poisoned bait is a highly relevant tool for managing C. longicaudata and potentially against other silverfish infestations.
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22
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Li YH, Wang XY, Hua W, Zhang H. Studies on Dissipations and Residues of Indoxacarb under Different Field and Environmental Conditions. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2020; 2020:8874759. [PMID: 33204576 PMCID: PMC7657686 DOI: 10.1155/2020/8874759] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 10/03/2020] [Accepted: 10/24/2020] [Indexed: 06/01/2023]
Abstract
Indoxacarb is a broad-spectrum insecticide and widely used in agriculture. The dissipations and residues of indoxacarb were researched at three different field sites in Beijing, Hunan, and Zhejiang provinces in China. Analytical methods for determining the residue of indoxacarb in paddy water, paddy soil, rice straw, rice hull, and brown rice were described. Indoxacarb residues were extracted from samples, cleaned up by solid phase extraction, and determined by high-performance liquid chromatography coupled with tandem mass spectrometry in the selected ion monitoring mode. The recoveries in paddy water, paddy soil, rice straw, rice hull, and brown rice matrices at three spiking levels ranged from 79.7% to 98.3%, respectively. The field and environmental conditions would affect the dissipations and residues of indoxacarb. The time to dissipate 50% of indoxacarb in paddy water, paddy soil, and rice straw was less than 9 days. The terminal residues obtained from Beijing at preharvest interval of 14 and 21 days were higher than the maximum limit of European Union. Therefore, a dosage of 24 g a. i. ha-1 at 28 days preharvest interval with 3 spraying times was recommended. Such accumulation of measured data is necessary to provide guidance for the proper and safe use of this pesticide.
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Affiliation(s)
- Ying-Hong Li
- Zhejiang Institute for Food and Drug Control, NMPA Key Laboratory for Testing and Warning of Pharmceutical Microbiology, Hangzhou 310052, China
| | - Xiang-Yun Wang
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Zhejiang Province Key Laboratory for Food Safety, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wei Hua
- Sipcam Crop Science (Wuxi) Co Ltd., Wuxi, China
| | - Hu Zhang
- Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Zhejiang Province Key Laboratory for Food Safety, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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23
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Wang J, Jia B, Li Y, Ren B, Liang H, Yan D, Xie H, Zhang X, Liang H. Effects of multi-walled carbon nanotubes on the enantioselective toxicity of the chiral insecticide indoxacarb toward zebrafish (Danio rerio). JOURNAL OF HAZARDOUS MATERIALS 2020; 397:122724. [PMID: 32387829 DOI: 10.1016/j.jhazmat.2020.122724] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/14/2020] [Accepted: 04/11/2020] [Indexed: 06/11/2023]
Abstract
The mass production and usage of carbon nanotubes (CNTs) have led to the inevitable release into the environment, and the effects of CNTs on the toxicity of co-existing pollutants have been well documented. However, knowledge of the effects of CNTs on the enantioselective toxicity of chiral compounds is limited. Using zebrafish as an experimental model, the enantioselective expression of the apoptosis, CYP3C and EAAT-related genes were analyzed following exposure to multi-walled carbon nanotubes (MWCNTs) (0.05 and 0.5 mg/L), rac-/R-/S-indoxacarb (0.01 mg/L), or the combination of rac-/R-/S-indoxacarb mixed with MWCNTs for 28d. Sex-specific differences were observed in both the liver and brain of zebrafish. The expression of apoptosis and CYP3C-related genes was 16.55-44.29 times higher in the livers of males treated with R-indoxacarb than in S-indoxacarb treated groups. The EAAT-related genes were expressed at 1.38-2.56 times higher levels in the brain of females treated with R-indoxacarb than in S-indoxacarb-treated groups. In the presence of MWCNTs, the expression of caspase-3, cyp3c3, cyp3c4, eaat1a, eaat1b and eaat2 in the livers of males and brains of females treated with S-indoxacarb were 1.65-15.33 times higher than in fish treated with R-indoxacarb. Based on these results, MWCNTs affected the enantioselective toxicity of indoxacarb toward zebrafish.
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Affiliation(s)
- Ju Wang
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Bo Jia
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Yanhong Li
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Bo Ren
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Hanlin Liang
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Dongyan Yan
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Haiyan Xie
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Xiaodong Zhang
- Inner Mongolia Institute for Drug Control, Hohhot, Inner Mongolia, 010020, China
| | - Hongwu Liang
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China.
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24
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Hafez AM, Mota-Sanchez D, Hollingworth RM, Vandervoort C, Wise JC. Metabolic mechanisms of indoxacarb resistance in field populations of Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 168:104636. [PMID: 32711770 DOI: 10.1016/j.pestbp.2020.104636] [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: 07/30/2019] [Revised: 06/13/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
Synergism and metabolic studies were conducted to identify the resistance mechanism against indoxacarb in two Choristoneura rosaceana (Harris) field populations compared to a susceptible population. The synergism study was carried out using diet incorporation bioassay for indoxacarb and the three synergists PBO, DEM, and DEF. The metabolic study consists of indoxacarb in vitro reaction with fifth instar larvae 12,000 g midgut supernatant or with pre-inhibited (in vivo by the esterases inhibitor DEF) fifth instar larvae 12,000 g midgut supernatant at different incubation times. In both susceptible and cherry populations, only DEF significantly synergized indoxacarb with a synergism ratio (SR) of 6.5 and 22.6-fold respectively indicating an involvement of esterases in the both populations. In the apple population, all synergists PBO, DEM, and DEF significantly synergized indoxacarb with SR of 9.6, 7.7, and 285.6-fold respectively indicating a complex resistance case with the possible involvement of all three metabolic resistance mechanisms with the central role of esterase enzymes. In vitro, the indoxacarb (DPX-JW062) was very rapidly metabolized within 5 min into small molecules in the lower portion of the metabolic pathway when it reacted with the midgut supernatant of each population. None of the metabolites in the upper portion of the metabolic pathway were detected at any incubation time including the potent sodium channel blocker DCJW metabolite. The two field populations showed significantly higher rates of metabolism of DPX-JW062 compared to the susceptible population at five min of incubation and that may explain the presence of indoxacarb resistance. In the second part of the in vitro study, the bio-transformation of DPX-JW062 was remarkably decreased when it reacted with the pre-inhibited (by DEF) midgut supernatant of each population. Additionally, the degradation of metabolites in the upper portion of the metabolic pathway remarkably decreased, which resulted in accumulation of DCJW and MP819 metabolites. The accumulation of DCJW metabolite under the pre-inhibited midgut supernatants treatment provided a persuasive explanation of the synergistic impact of esterase inhibitor DEF on indoxacarb in C. rosaceana.
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Affiliation(s)
- Abdulwahab M Hafez
- Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
| | - David Mota-Sanchez
- Department of Entomology, Michigan State University, 243 Natural Science, East Lansing, MI 48824, United States of America
| | - Robert M Hollingworth
- Department of Entomology, Michigan State University, 243 Natural Science, East Lansing, MI 48824, United States of America
| | - Christine Vandervoort
- Michigan State University Pesticide Analytical Laboratory, 206 Center for Integrated Plant Systems, East Lansing, MI 48824, United States of America
| | - John C Wise
- Department of Entomology, Michigan State University, 243 Natural Science, East Lansing, MI 48824, United States of America
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25
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Chen J, Gu H, Zhu X, Nam W, Wang B. Zirconium‐Salan Catalyzed Enantioselective
α
‐Hydroxylation of
β
‐Keto Esters. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000290] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jie Chen
- School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 People's Republic of China
| | - Haiyang Gu
- School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 People's Republic of China
| | - Xueying Zhu
- School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 People's Republic of China
| | - Wonwoo Nam
- Department of Chemistry and Nano ScienceEwha Womans University Seoul 03760 Korea
| | - Bin Wang
- School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 People's Republic of China
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26
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Sakthiselvi T, Paramasivam M, Vasanthi D, Bhuvaneswari K. Persistence, dietary and ecological risk assessment of indoxacarb residue in/on tomato and soil using GC-MS. Food Chem 2020; 328:127134. [PMID: 32473493 DOI: 10.1016/j.foodchem.2020.127134] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 10/24/2022]
Abstract
An efficient single quadrupole gas chromatography with mass spectrometry method was developed and validated for the determination of indoxacarb residues in tomato and soil. Residues were extracted from the samples using acetonitrile as extracting solvent and the extracts were purified through primary secondary amine and graphitized carbon black. Recoveries were obtained in the range of 92.12-110.51% with the relative standard deviation of 1.32-4.32%. Indoxacarb dissipated with half-life of 3.12-3.21 and 1.24-1.35d for tomato and soil, respectively following doses of indoxacarb 14.5% SC at 60, 90 and 120 g.a.i./ha. Safe waiting periods were found to be 1-3d. The residues were removed from tomato fruit was in the range of 16.73 to 54.32% using simple decontamination approaches. The present study suggest that the use of indoxacarb in tomato at recommended dose, does not seem to pose any dietary risk to the consumers. The soil RQ values indicated low level of risk to earthworms and arthropods.
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Affiliation(s)
- T Sakthiselvi
- Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-03, Tamil Nadu, India
| | - M Paramasivam
- Pesticide Toxicology Laboratory, Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-03, Tamil Nadu, India.
| | - D Vasanthi
- Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-03, Tamil Nadu, India
| | - K Bhuvaneswari
- Pesticide Toxicology Laboratory, Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-03, Tamil Nadu, India
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27
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Sharma RK, Singh P, Setia A, Sharma AK. Insecticides and ovarian functions. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2020; 61:369-392. [PMID: 31916619 DOI: 10.1002/em.22355] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 12/10/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
Insecticides, a heterogeneous group of chemicals, are widely used in agriculture and household practices to avoid insect-inflicted damage. Extensive use of insecticides has contributed substantially to agricultural production and the prevention of deadly diseases by destroying their vectors. On the contrary, many of the insecticides are associated with several adverse health effects like neurological and psychological diseases, metabolic disorders, hormonal imbalance, and even cancer in non-target species, including humans. Reproduction, a very selective process that ensures the continuity of species, is affected to a greater extent by the rampant use of insecticides. In females, exposure to insecticides leads to reproductive incapacitation primarily through disturbances in ovarian physiology. Disturbed ovarian activities encompass the alterations in hormone synthesis, follicular maturation, ovulation process, and ovarian cycle, which eventually lead to decline in fertility, prolonged time-to-conceive, spontaneous abortion, stillbirths, and developmental defects. Insecticide-induced ovarian toxicity is effectuated by endocrine disruption and oxidative stress. Oxidative stress, which occurs due to suppression of antioxidant defense system, and upsurge of reactive oxygen and nitrogen species, potentiates DNA damage and expression of apoptotic and inflammatory markers. Insecticide exposure, in part, is responsible for ovarian malfunctioning through disruption of hypothalamic-pituitary-gonadal axis. The current article is focused on the adverse effects of insecticides on ovarian functioning, and consequently, on the reproductive efficacy of females. The possible strategies to combat insecticide-induced toxicity are also discussed in the latter part of this review. Environ. Mol. Mutagen. 61:369-392, 2020. © 2020 Wiley Periodicals, Inc.
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Affiliation(s)
- Rajnesh Kumar Sharma
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, India
| | - Priyanka Singh
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, India
| | - Aarzoo Setia
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, India
| | - Aman Kumar Sharma
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, India
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28
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Method Development and Validation for Determination of Indoxacarb Using LC-ESI-MS/MS and Its Dissipation Kinetics in Pigeonpea. FOOD ANAL METHOD 2019. [DOI: 10.1007/s12161-019-01681-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Whiteker GT. Applications of the 12 Principles of Green Chemistry in the Crop Protection Industry. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00305] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gregory T. Whiteker
- Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
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30
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Zhang Y, Zhang H, Cheng F, Xia Y, Zheng J, Wang Z. Whole-cell biocatalytic of Bacillus cereus WZZ006 strain to synthesis of indoxacarb intermediate: (S)-5-Chloro-1-oxo-2,3-dihydro-2-hydroxy-1H-indene-2-carboxylic acid methyl ester. Chirality 2019; 31:958-967. [PMID: 31468608 DOI: 10.1002/chir.23124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 07/18/2019] [Accepted: 08/04/2019] [Indexed: 11/05/2022]
Abstract
In this study, a newly isolated strain screened from the indoxacarb-rich agricultural soils, Bacillus cereus WZZ006, has a high stereoselectivity to racemic substrate 5-chloro-1-oxo-2,3-dihydro-2-hydroxy-1H-indene-2-carboxylic acid methyl ester. (S)-5-chloro-1-oxo-2,3-dihydro-2-hydroxy-1H-indene-2-carboxylic acid methyl ester was obtained by bio-enzymatic resolution. After the 36-hour hydrolysis in 50-mM racemic substrate under the optimized reaction conditions, the e.e.s was up to 93.0% and the conversion was nearly 53.0% with the E being 35.0. Therefore, B cereus WZZ006 performed high-level ability to produce (S)-5-chloro-1-oxo-2,3-dihydro-2-hydroxy-1H-indene-2-carboxylic acid methyl ester. This study demonstrates a new biocatalytic process route for preparing the indoxacarb chiral intermediates and provides a theoretical basis for the application of new insecticides in agricultural production.
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Affiliation(s)
- Yinjun Zhang
- Department Key Laboratory of Bioorganic Synthesis of Zhejiang Province, Institution College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Hongyun Zhang
- Department Key Laboratory of Bioorganic Synthesis of Zhejiang Province, Institution College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Feifei Cheng
- Department Key Laboratory of Bioorganic Synthesis of Zhejiang Province, Institution College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Ying Xia
- Department Key Laboratory of Bioorganic Synthesis of Zhejiang Province, Institution College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Jianyong Zheng
- Department Key Laboratory of Bioorganic Synthesis of Zhejiang Province, Institution College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Zhao Wang
- Department Key Laboratory of Bioorganic Synthesis of Zhejiang Province, Institution College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
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31
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Zhang J, Hao W, Zhorov BS, Dong K, Jiang D. Discovery of a Novel Series of Tricyclic Oxadiazine 4a-Methyl Esters Based on Indoxacarb as Potential Sodium Channel Blocker/Modulator Insecticides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:7793-7809. [PMID: 31274315 DOI: 10.1021/acs.jafc.9b00826] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Indoxacarb, a commercialized oxadiazine insecticide, nearly irreversibly blocks open/inactivated, but not resting sodium channels. The structure-activity relationships showed that the substituents at the position of the chiral atom in the oxadiazine ring are very important to the biological activity of oxadiazine insecticide. Here we synthesized a series of tricyclic oxadiazine 4a-methyl ester derivatives. The chiral atom in the oxadiazine ring has been epimerized and substituted with either pyrethric acid or cinnamic acid derivatives. Benzene ring in the tricyclic moiety was substituted with a chlorine, fluorine, or bromine atom, and nitrogen-linked benzene ring was substituted with a trifluoromethyl or trifluoromethoxy group. Toxicity of these compounds against Spodoptera litura F. was evaluated. Diastereoisomers of most toxic compounds J7 and J9 with pyrethric acid moiety were separated by flash column chromatography. The more polar diastereoisomers, J7-L-Rf and J9-L-Rf, and compounds J24 and J26 with cinnamic acid moiety exhibited highest insecticidal activities. We further used Monte Carlo energy minimizations to dock compound J7 and J24 in the NavMs-based homology model of the open cockroach sodium channel. In the low-energy binding modes, the compound interacted with residues in the inner pore and domain interfaces, which previously were proposed to contribute to receptors of pyrethroids and sodium channel blocker insecticides. Our results define compound J7 and J24 as a potentially useful optimized hit for the development of multiple sites sodium channel blocker or modulator.
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Affiliation(s)
- Jianqiang Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, Laboratory of Insect Toxicology , South China Agricultural University , Guangzhou 510642 , P.R. China
| | - Wenbo Hao
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, Laboratory of Insect Toxicology , South China Agricultural University , Guangzhou 510642 , P.R. China
| | - Boris S Zhorov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, RAS , St. Petersburg , Russia
- Department of Biochemistry & Biomedical Sciences , McMaster University , Hamilton , Ontario L8S 4L8 , Canada
| | - Ke Dong
- Department of Entomology, Neuroscience and Genetics Programs , Michigan State University , East Lansing , Michigan 48824 , United States
| | - Dingxin Jiang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, Laboratory of Insect Toxicology , South China Agricultural University , Guangzhou 510642 , P.R. China
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32
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Wang Y, Wang S, Gao Q, Li L, Zhi H, Zhang T, Zhang J. Transition-metal, organic solvent and base free α-hydroxylation of β-keto esters and β-keto amides with peroxides in water. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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33
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Souza D, Vieira BC, Fritz BK, Hoffmann WC, Peterson JA, Kruger GR, Meinke LJ. Western corn rootworm pyrethroid resistance confirmed by aerial application simulations of commercial insecticides. Sci Rep 2019; 9:6713. [PMID: 31040345 PMCID: PMC6491722 DOI: 10.1038/s41598-019-43202-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 04/17/2019] [Indexed: 11/09/2022] Open
Abstract
The western corn rootworm (Diabrotica virgifera virgifera LeConte) (WCR) is a major insect pest of corn (Zea mays L.) in the United States (US) and is highly adaptable to multiple management tactics. A low level of WCR field-evolved resistance to pyrethroid insecticides has been confirmed in the US western Corn Belt by laboratory dose-response bioassays. Further investigation has identified detoxification enzymes as a potential part of the WCR resistance mechanism, which could affect the performance of insecticides that are structurally related to pyrethroids, such as organophosphates. Thus, the responses of pyrethroid-resistant and -susceptible WCR populations to the commonly used pyrethroid bifenthrin and organophosphate dimethoate were compared in active ingredient bioassays. Results revealed a relatively low level of WCR resistance to both active ingredients. Therefore, a simulated aerial application bioassay technique was developed to evaluate how the estimated resistance levels would affect performance of registered rates of formulated products. The simulated aerial application technique confirmed pyrethroid resistance to formulated rates of bifenthrin whereas formulated dimethoate provided optimal control. Results suggest that the relationship between levels of resistance observed in dose-response bioassays and actual efficacy of formulated product needs to be further explored to understand the practical implications of resistance.
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Affiliation(s)
- Dariane Souza
- University of Nebraska-Lincoln, Department of Entomology, Lincoln, 68583, USA
| | - Bruno C Vieira
- University of Nebraska-Lincoln, Department of Agronomy and Horticulture, North Platte, 69101, USA
| | - Bradley K Fritz
- USDA-ARS, Aerial Application Technology Research Unit, College Station, 77845, USA
| | - Wesley C Hoffmann
- USDA-ARS, Aerial Application Technology Research Unit, College Station, 77845, USA
| | - Julie A Peterson
- University of Nebraska-Lincoln, Department of Entomology, North Platte, 69101, USA
| | - Greg R Kruger
- University of Nebraska-Lincoln, Department of Agronomy and Horticulture, North Platte, 69101, USA
| | - Lance J Meinke
- University of Nebraska-Lincoln, Department of Entomology, Lincoln, 68583, USA.
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34
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Yang F, Zhao J, Tang X, Wu Y, Yu Z, Meng Q. Visible Light‐Induced Salan‐Copper(II)‐Catalyzed Enantioselective Aerobic α‐Hydroxylation of β‐Keto Esters. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801263] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Fan Yang
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and TechnologyDalian University of Technology Dalian 116024 People's Republic of China
| | - Jingnan Zhao
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and TechnologyDalian University of Technology Dalian 116024 People's Republic of China
| | - Xiaofei Tang
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and TechnologyDalian University of Technology Dalian 116024 People's Republic of China
| | - Yufeng Wu
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and TechnologyDalian University of Technology Dalian 116024 People's Republic of China
| | - Zongyi Yu
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and TechnologyDalian University of Technology Dalian 116024 People's Republic of China
| | - Qingwei Meng
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and TechnologyDalian University of Technology Dalian 116024 People's Republic of China
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35
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Reddy TP, Krishna AV, Ramachary DB. Catalytic [3 + 3]-Cycloaddition for Regioselective Preparation of Tricyclic Oxadiazines. Org Lett 2018; 20:6979-6983. [DOI: 10.1021/acs.orglett.8b02719] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- T. Prabhakar Reddy
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India
| | - A. Vamshi Krishna
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India
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36
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Wang Y, Gao Q, Liu Z, Bai S, Tang X, Yin H, Meng Q. Enantioselective α-Benzoyloxylation of β-Keto Esters by N-Oxide Phase-Transfer Catalysts. J Org Chem 2018; 83:2263-2273. [DOI: 10.1021/acs.joc.7b03150] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yakun Wang
- School
of Pharmacy, Xinxiang Medical University, Xinxiang, 453003 Henan, People’s Republic of China
- School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024 Liaoning, People’s Republic of China
| | - Qinghe Gao
- School
of Pharmacy, Xinxiang Medical University, Xinxiang, 453003 Henan, People’s Republic of China
| | - Zhaomin Liu
- School
of Pharmacy, Xinxiang Medical University, Xinxiang, 453003 Henan, People’s Republic of China
| | - Suping Bai
- School
of Pharmacy, Xinxiang Medical University, Xinxiang, 453003 Henan, People’s Republic of China
| | - Xiaofei Tang
- School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024 Liaoning, People’s Republic of China
| | - Hang Yin
- School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024 Liaoning, People’s Republic of China
| | - Qingwei Meng
- School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024 Liaoning, People’s Republic of China
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37
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Zhang S, Zhang X, Shen J, Li D, Wan H, You H, Li J. Cross-resistance and biochemical mechanisms of resistance to indoxacarb in the diamondback moth, Plutella xylostella. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 140:85-89. [PMID: 28755699 DOI: 10.1016/j.pestbp.2017.06.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/10/2017] [Accepted: 06/19/2017] [Indexed: 06/07/2023]
Abstract
Indoxacarb belongs to a class of insecticides known as oxadiazines and is the first commercialized pyrazoline-type voltage-dependent sodium channel blocker. A moderate level of resistance to indoxacarb has evolved in field populations of Plutella xylostella from Central China. In the present study, cross-resistance, resistance stability and metabolic mechanisms of indoxacarb resistance were investigated in this moth species. A P. xylostella strain with a high level of resistance to indoxacarb was obtained through continuous selection in the laboratory. The strain showed cross-resistance to metaflumizone, beta-cypermethrin and chlorfenapyr, but no resistance to cyantraniliprole, chlorantraniliprole, abamectin, chlorfluazuron, spinosad and diafenthiuron compared with the susceptible strain. Synergism tests revealed that piperonyl butoxide (PBO) (synergistic ratio, SR=7.8) and diethyl maleate (DEF) (SR=3.5) had considerable synergistic effects on indoxacarb toxicity in the resistant strain (F58). Enzyme activity data showed there was an approximate 5.8-fold different in glutathione S-transferase (GST) and a 6.8-fold different in cytochrome P450 monooxygenase between the resistant strain (F58) and susceptible strain, suggesting that the increased activity of these two enzymes is likely the main detoxification mechanism responsible for the species' resistance to indoxacarb. These results will be helpful for insecticide resistance management strategies to delay the development of indoxacarb resistance in fields.
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Affiliation(s)
- Shuzhen Zhang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xiaolei Zhang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jun Shen
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Dongyang Li
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Hu Wan
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Hong You
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Jianhong Li
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
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Roditakis E, Mavridis K, Riga M, Vasakis E, Morou E, Rison JL, Vontas J. Identification and detection of indoxacarb resistance mutations in the para sodium channel of the tomato leafminer, Tuta absoluta. PEST MANAGEMENT SCIENCE 2017; 73:1679-1688. [PMID: 28019074 DOI: 10.1002/ps.4513] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/20/2016] [Accepted: 12/20/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Indoxacarb is an important active ingredient extensively used for the control of Tuta absoluta, a major tomato pest, playing a particular role in insecticide resistance management schemes. RESULTS Reduced susceptibility to indoxacarb was identified (1794-fold resistance) through toxicological bioassays in a field population from Greece and evolved rapidly to resistance after short laboratory selection. Combined bioassays with synergists and biochemical analysis suggested only a partial involvement of detoxification enzymes in the resistant phenotype. To investigate the role of target-site resistance, segment 6 of domain IV of the sodium channel in T. absoluta was cloned and the sequences compared between susceptible and indoxacarb-resistant T. absoluta insects. The presence of the F1845Y and the V1848I indoxacarb resistance mutations was detected and was strongly associated with the phenotype. These amino acid substitutions correspond to recently characterised indoxacarb resistance mutations in diamondback moth (Plutella xylostella). Robust and accurate PCR-RFLP assays were subsequently developed and successfully validated for detecting both indoxacarb resistance mutations in field T. absoluta populations. CONCLUSION The identification of indoxacarb resistance mutations and the development of diagnostic tools will allow early detection of indoxacarb resistance, facilitating implementation of appropriate resistance management strategies, thus delaying the spread of resistance. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Emmanouil Roditakis
- Hellenic Agricultural Organisation - 'Demeter', Institute of Olive, Subtropical Plants and Vine, Heraklion, Crete, Greece
| | - Konstantinos Mavridis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas, Crete, Greece
| | - Maria Riga
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas, Crete, Greece
- Department of Biology, University of Crete
| | - Emmanouil Vasakis
- Hellenic Agricultural Organisation - 'Demeter', Institute of Olive, Subtropical Plants and Vine, Heraklion, Crete, Greece
| | - Evangelia Morou
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas, Crete, Greece
- Department of Biology, University of Crete
| | | | - John Vontas
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas, Crete, Greece
- Department of Crop Science, Agricultural University of Athens, Athens, Greece
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39
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Affiliation(s)
- Clemens Lamberth
- Syngenta Crop Protection AG, Chemical Research; Schaffhauserstrasse 101 CH-4332 Stein Switzerland
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40
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Kim D, Ha MW, Hong S, Park C, Kim B, Yang J, Park HG. Enantioselective Synthesis of Chiral α-Azido and α-Aryloxy Quaternary Stereogenic Centers via the Phase-Transfer-Catalyzed α-Alkylation of α-Bromomalonates, Followed by SN2 Substitution. J Org Chem 2017; 82:4936-4943. [DOI: 10.1021/acs.joc.7b00324] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Doyoung Kim
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Min Woo Ha
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Suckchang Hong
- Korea Research Institute of Chemical Technology, 16 Gajung-ro Yoosung-gu, Daejeon 34114, Korea
| | - Cheonhyoung Park
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Byungsoo Kim
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Jewon Yang
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Hyeung-geun Park
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
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41
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Abstract
What are the advantages of bioactivation in optimizing drugs and pesticides? Why are there so many prodrugs and propesticides? These questions are examined here by considering compounds selected on the basis of economic value or market success in 2015. The 100 major drugs and 90 major pesticides are divided into ones acting directly and those definitely or possibly requiring bioactivation. Established or candidate prodrugs accounted for 19% of the total drug sales, with corresponding values of 20, 37, and 17% for proinsecticides, proherbicides, and profungicides. The 19 prodrugs acting in humans generally had better pharmacodynamic/pharmacokinetic properties for target enzyme, receptor, tissue, or organ specificity due to their physical properties (lipophilicity and stabilization). Bioactivation usually involved hydrolases or cytochrome P450 oxidation or reduction. Prodrugs considered are neuroactive aripiprazole, eletriptan, desvenlafaxin, lisdexamfetamine, quetiapine, and fesoterodine; cholesterol-lowering atorvastatin, ezetimibe, and fenofibrate; various prodrugs activated by esterases or sulfatases, ciclesonide, oseltamivir, dabigatran; omega-3 fatty acid ethyl esters and esterone sulfate; and five others with various targets (sofosbuvir, fingolimod, clopidogrel, dapsone, and sildenafil). The proinsecticides are the neuroactive chlorpyrifos, thiamethoxam, and indoxacarb, two spiro enol ester inhibitors of acetyl CoA carboxylase (ACCase), and the bacterial protein delta-endotoxin. The proherbicides considered are five ACCase inhibitors including pinoxaden and clethodim, three protox inhibitors (saflufenacil, flumioxazin, and canfentrazone-ethyl), and three with various targets (fluroxypyr, isoxaflutole, and clomazone). The profungicides are prothioconazole, mancozeb, thiophanate-methyl, dazomet, and fosetyl-aluminum. The prodrug and propesticide concept is broadly applicable and has created some of the most selective pharmaceutical and pest control agents, illustrated here by major compounds that partially overcome pharmacokinetic limitations of potency and selectivity in the corresponding direct-acting compounds. The challenges of molecular design extend beyond the target site fit to the bioactivatable precursor and the fascinating chemistry and biology matched against the complexity of life processes.
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Affiliation(s)
- John E Casida
- Environmental Chemistry and Toxicology Laboratory, Department of Environmental Science, Policy, and Management, University of California , Berkeley, California 94720, United States
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42
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Salgado VL, David MD. Chance and design in proinsecticide discovery. PEST MANAGEMENT SCIENCE 2017; 73:723-730. [PMID: 27976502 DOI: 10.1002/ps.4502] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/07/2016] [Accepted: 12/07/2016] [Indexed: 06/06/2023]
Abstract
Many insecticides are inactive on their target sites in the form that is sold and applied, needing first to be bioactivated. This proinsecticide strategy has often been achieved by design, through systematic derivatization of intrinsically active molecules with protecting groups that mask their toxic effects until their selective removal in target insects by metabolic enzymes generates the toxiphore. Proinsecticides can be designed to gain selectivity between target and non-target organisms, or to improve bioavailability by enhancing plant or insect uptake. In most cases, however, chance trumps design in proinsecticide discovery: most first-in-class products that we now know to be proinsecticides were only discovered a posteriori to be such, often after having been on the market for years. Knowing the active form of an insecticide is essential to mode of action identification, and early mode of action studies on novel chemotypes should take into account the possibility that the compounds might be proinsecticides. This paper reviews examples of proinsecticides in the marketplace, strategies for making proinsecticides and techniques for unmasking proinsecticides in mode of action studies. Our analysis of global agrochemical sales data shows that 34% of the dollar value of crop insecticides used in 2015 were proinsecticides. © 2016 Society of Chemical Industry.
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Affiliation(s)
| | - Michael D David
- BASF Global Insecticide Research, Research Triangle Park, NC, USA
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43
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Wing KD. It takes a team: reflections on insecticide discoveries, toxicological problems and enjoying the unexpected. PEST MANAGEMENT SCIENCE 2017; 73:666-671. [PMID: 27146911 DOI: 10.1002/ps.4311] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 04/09/2016] [Accepted: 05/03/2016] [Indexed: 06/05/2023]
Abstract
Absorption/distribution/metabolism/excretion (ADME)-related studies are mandatory in agrochemical development/registration, but can also play a valuable role in the discovery process. In combination with target-site potency, bioavailability/ADME characteristics determine agrochemical bioactivity and selectivity, and these concerns can dictate the fate of a discovery lead area. Bioavailability/ADME research was critical to the eventual commercialization of three different insecticide chemistries examined in this paper. In one situation, improved systemicity in anthranilic diamides was required to expand pest spectrum. In another, ADME tools were needed to improve the selective toxicity and non-target safety of sodium channel blocker insecticides. Finally, differential ADME characteristics of two classes of hormone agonists dictated differential insecticidal activity, and were useful in optimizing the dibenzoylhydrazine ecdysone agonists. ADME discovery research will help companies to advance novel, efficacious and selective agrochemicals, but organizational patience and a desire to understand lead areas in depth are required. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Keith D Wing
- Keith D Wing Consulting, LLC, Wilmington, DE, USA
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44
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Yang F, Zhao J, Tang X, Zhou G, Song W, Meng Q. Enantioselective α-Hydroxylation by Modified Salen-Zirconium(IV)-Catalyzed Oxidation of β-Keto Esters. Org Lett 2017; 19:448-451. [PMID: 28078895 DOI: 10.1021/acs.orglett.6b03554] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The highly enantioselective α-hydroxylation of β-keto esters using cumene hydroperoxide (CHP) as the oxidant was realized by a chiral (1S,2S)-cyclohexanediamine backbone salen-zirconium(IV) complex as the catalyst. A variety of corresponding chiral α-hydroxy β-keto esters were obtained in excellent yields (up to 99%) and enantioselectivities (up to 98% ee). The zirconium-catalyzed enantioselective α-hydroxylation of β-keto esters was scalable, and the zirconium catalyst was recyclable. The reaction can be performed in gram scale, and corresponding chiral products were acquired in 95% yield and 99% ee.
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Affiliation(s)
- Fan Yang
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Jingnan Zhao
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Xiaofei Tang
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Guangli Zhou
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Wangze Song
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Qingwei Meng
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
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45
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Varghese B, Al-Busafi SN, Suliman FO, Al-Kindy SMZ. Unveiling a versatile heterocycle: pyrazoline – a review. RSC Adv 2017. [DOI: 10.1039/c7ra08939b] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The design and synthesis of novel fluorescent heterocyclic dyes is a “hotspot” research area, due to their favourable photophysical and electronic properties, which could allow huge advances in the fields of physics, chemistry and biology.
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Affiliation(s)
- Beena Varghese
- Department of Chemistry
- College of Science
- Sultan Qaboos University
- Sultanate of Oman
| | - Saleh N. Al-Busafi
- Department of Chemistry
- College of Science
- Sultan Qaboos University
- Sultanate of Oman
| | | | - Salma M. Z. Al-Kindy
- Department of Chemistry
- College of Science
- Sultan Qaboos University
- Sultanate of Oman
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46
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Sandeep K, Mukhopadhyay CS, Arora JS, Sethi RS. Indoxacarb interaction alters immunotoxic and genotoxic potential of endotoxin. JOURNAL OF PESTICIDE SCIENCE 2016; 41:65-70. [PMID: 30363127 PMCID: PMC6140663 DOI: 10.1584/jpestics.d16-012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/18/2016] [Indexed: 06/08/2023]
Abstract
Indoxacarb is commonly used to effectively control pests, cockroaches, termites, fleas, and houseflies. Although the toxicological profile of indoxacarb had already been well characterized, we examined the possible toxicological interaction with indoxacarb and endotoxin. Male Swiss albino mice aged 8-10 weeks were orally administered indoxacarb dissolved in groundnut oil at 4 mg/kg/day and 2 mg/kg/day for 90 days. On day 91, five animals from each group were challenged with lipopolysaccharides (LPS) at 80 µg/mouse, administered intranasally. Indoxacarb at 4 mg/kg significantly decreased Total leukocyte count, lymphocytopenia, and neutrophilia. Both doses of indoxacarb combined with LPS resulted in significant lymphocytopenia. Indoxacarb did not produce DNA damage in comet assay, but when combined with LPS, it resulted in a significant increase in tail length, tail moment, and olive moment. The data indicate that indoxacarb at 4 mg/kg administered orally for 90 days induced immune-response change. Further, both doses of indoxacarb, when combined with LPS, accelerate immunotoxicity and endotoxin-induced DNA damage.
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Affiliation(s)
- Kaur Sandeep
- Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
| | | | - Jaspreet S. Arora
- Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
| | - Ram S. Sethi
- Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
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47
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Zhang Y, Du Y, Jiang D, Behnke C, Nomura Y, Zhorov BS, Dong K. The Receptor Site and Mechanism of Action of Sodium Channel Blocker Insecticides. J Biol Chem 2016; 291:20113-24. [PMID: 27489108 DOI: 10.1074/jbc.m116.742056] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Indexed: 01/03/2023] Open
Abstract
Sodium channels are excellent targets of both natural and synthetic insecticides with high insect selectivity. Indoxacarb, its active metabolite DCJW, and metaflumizone (MFZ) belong to a relatively new class of sodium channel blocker insecticides (SCBIs) with a mode of action distinct from all other sodium channel-targeting insecticides, including pyrethroids. Electroneutral SCBIs preferably bind to and trap sodium channels in the inactivated state, a mechanism similar to that of cationic local anesthetics. Previous studies identified several SCBI-sensing residues that face the inner pore of sodium channels. However, the receptor site of SCBIs, their atomic mechanisms, and the cause of selective toxicity of MFZ remain elusive. Here, we have built a homology model of the open-state cockroach sodium channel BgNav1-1a. Our computations predicted that SCBIs bind in the inner pore, interact with a sodium ion at the focus of P1 helices, and extend their aromatic moiety into the III/IV domain interface (fenestration). Using model-driven mutagenesis and electrophysiology, we identified five new SCBI-sensing residues, including insect-specific residues. Our study proposes the first three-dimensional models of channel-bound SCBIs, sheds light on the molecular basis of MFZ selective toxicity, and suggests that a sodium ion located in the inner pore contributes to the receptor site for electroneutral SCBIs.
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Affiliation(s)
- Yongqiang Zhang
- From the College of Plant Protection, Southwest University, Chongqing 400716, China, the Department of Entomology, Genetics and Neuroscience Programs, Michigan State University, East Lansing, Michigan 48824
| | - Yuzhe Du
- the Department of Entomology, Genetics and Neuroscience Programs, Michigan State University, East Lansing, Michigan 48824
| | - Dingxin Jiang
- the Department of Entomology, Genetics and Neuroscience Programs, Michigan State University, East Lansing, Michigan 48824
| | - Caitlyn Behnke
- the Department of Entomology, Genetics and Neuroscience Programs, Michigan State University, East Lansing, Michigan 48824
| | - Yoshiko Nomura
- the Department of Entomology, Genetics and Neuroscience Programs, Michigan State University, East Lansing, Michigan 48824
| | - Boris S Zhorov
- the Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada, and the Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia
| | - Ke Dong
- the Department of Entomology, Genetics and Neuroscience Programs, Michigan State University, East Lansing, Michigan 48824,
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48
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Li Z, Zhao X, Chen J, Wu Y, Zhang J, Zhang K, Hu D. Determination of RH-5849 and indoxacarb in rice straw, rice husk, brown rice and soil using liquid chromatography-tandem triple quadrupole mass spectrometry following extraction with QuEChERS method. Biomed Chromatogr 2016; 30:1625-31. [DOI: 10.1002/bmc.3732] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 03/13/2016] [Accepted: 03/29/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Zhurui 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
- Center for Research and Development of Fine Chemicals; Guizhou University; Guiyang 550025 China
| | - Xiaozhen Zhao
- 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
- Center for Research and Development of Fine Chemicals; Guizhou University; Guiyang 550025 China
| | - Jiaojiao Chen
- 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
- Center for Research and Development of Fine Chemicals; Guizhou University; Guiyang 550025 China
| | - Yue Wu
- 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
- Center for Research and Development of Fine Chemicals; Guizhou University; Guiyang 550025 China
| | - Jing Zhang
- 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
- Center for Research and Development of Fine Chemicals; Guizhou University; Guiyang 550025 China
| | - Kankan Zhang
- 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
- Center for Research and Development of Fine Chemicals; Guizhou University; Guiyang 550025 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
- Center for Research and Development of Fine Chemicals; Guizhou University; Guiyang 550025 China
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49
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Neuman-Lee LA, Brodie ED, Hansen T, Brodie ED, French SS. Comparing the Natural and Anthropogenic Sodium Channel Blockers Tetrodotoxin and Indoxacarb in Garter Snakes. ACTA ACUST UNITED AC 2016; 325:255-64. [DOI: 10.1002/jez.2012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 02/25/2016] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Tyler Hansen
- Department of Biology; Utah State University; Logan Utah
| | - Edmund D. Brodie
- Department of Biology; University of Virginia; Charlottesville Virginia
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50
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Wang Y, Yin H, Qing H, Zhao J, Wu Y, Meng Q. Asymmetric α-Hydroxylation of β-Indanone Esters and β-Indanone Amides Catalyzed by C-2′ Substituted Cinchona
Alkaloid Derivatives. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500911] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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