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Lisi F, Amichot M, Desneux N, Gatti JL, Guedes RNC, Nazzi F, Pennacchio F, Russo A, Sánchez-Bayo F, Wang X, Zappalà L, Biondi A. Pesticide immunotoxicity on insects - Are agroecosystems at risk? THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175467. [PMID: 39155008 DOI: 10.1016/j.scitotenv.2024.175467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 08/09/2024] [Accepted: 08/10/2024] [Indexed: 08/20/2024]
Abstract
Recent years have witnessed heightened scrutiny of the non-target sublethal effects of pesticides on behavioural and physiological traits of insects. Traditionally, attention has focused on investigating pesticides' primary modes of action, often overlooking the potential secondary mechanisms. This review brings forth the nuanced impacts of sublethal pesticide exposure on the immune system of target and non-target insect species. Pesticides, such as for example neonicotinoids, suppress immune response, while others, like certain organophosphates and some insect growth regulators (IGRs), appear to bolster immunocompetence under certain circumstances. Beyond their individual impacts, the synergic effects of pesticide mixtures on insect immunity are garnering increasing interest. This review thus summarizes recent advances in the immunomodulatory effects of pesticides, detailing both mechanisms and consequences of such interactions. The implications of these effects for ecosystem preservation and viability of beneficial organisms, such as pollinators and natural enemies of pests, are discussed. The review also considers further research directions on pesticide secondary modes of action and explores potential implications for integrated pest management (IPM) programs, as several model organisms studied are crop pest species. While current data provide an expansive overview of how insect innate immunity is modulated, concrete endpoints remain elusive requiring further research into pesticide secondary modes of actions.
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Affiliation(s)
- Fabrizio Lisi
- University of Catania, Department of Agriculture, Food and Environment, via Santa Sofia 100, 95123 Catania, Italy
| | - Marcel Amichot
- INRAE, Université Côte d'Azur, CNRS, UMR ISA, 06903 Sophia-Antipolis, France
| | - Nicolas Desneux
- INRAE, Université Côte d'Azur, CNRS, UMR ISA, 06903 Sophia-Antipolis, France
| | - Jean-Luc Gatti
- INRAE, Université Côte d'Azur, CNRS, UMR ISA, 06903 Sophia-Antipolis, France
| | | | - Francesco Nazzi
- University of Udine, Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), Udine, Italy
| | - Francesco Pennacchio
- University of Naples, Department of Entomology and Zoology, Portici, Naples, Italy
| | - Agatino Russo
- University of Catania, Department of Agriculture, Food and Environment, via Santa Sofia 100, 95123 Catania, Italy
| | | | - Xingeng Wang
- USDA ARS Beneficial Insects Introduction Research Unit, Newark, DE, USA
| | - Lucia Zappalà
- University of Catania, Department of Agriculture, Food and Environment, via Santa Sofia 100, 95123 Catania, Italy
| | - Antonio Biondi
- University of Catania, Department of Agriculture, Food and Environment, via Santa Sofia 100, 95123 Catania, Italy.
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Yin C, O’Reilly AO, Liu SN, Du TH, Gong PP, Zhang CJ, Wei XG, Yang J, Huang MJ, Fu BL, Liang JJ, Xue H, Hu JY, Ji Y, He C, Du H, Wang C, Zhang R, Tan QM, Lu HT, Xie W, Chu D, Zhou XG, Nauen R, Gui LY, Bass C, Yang X, Zhang YJ. Dual mutations in the whitefly nicotinic acetylcholine receptor β1 subunit confer target-site resistance to multiple neonicotinoid insecticides. PLoS Genet 2024; 20:e1011163. [PMID: 38377137 PMCID: PMC10906874 DOI: 10.1371/journal.pgen.1011163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 03/01/2024] [Accepted: 01/30/2024] [Indexed: 02/22/2024] Open
Abstract
Neonicotinoid insecticides, which target insect nicotinic acetylcholine receptors (nAChRs), have been widely and intensively used to control the whitefly, Bemisia tabaci, a highly damaging, globally distributed, crop pest. This has inevitably led to the emergence of populations with resistance to neonicotinoids. However, to date, there have been no reports of target-site resistance involving mutation of B. tabaci nAChR genes. Here we characterize the nAChR subunit gene family of B. tabaci and identify dual mutations (A58T&R79E) in one of these genes (BTβ1) that confer resistance to multiple neonicotinoids. Transgenic D. melanogaster, where the native nAChR Dβ1 was replaced with BTβ1A58T&R79E, were significantly more resistant to neonicotinoids than flies where Dβ1 were replaced with the wildtype BTβ1 sequence, demonstrating the causal role of the mutations in resistance. The two mutations identified in this study replace two amino acids that are highly conserved in >200 insect species. Three-dimensional modelling suggests a molecular mechanism for this resistance, whereby A58T forms a hydrogen bond with the R79E side chain, which positions its negatively-charged carboxylate group to electrostatically repulse a neonicotinoid at the orthosteric site. Together these findings describe the first case of target-site resistance to neonicotinoids in B. tabaci and provide insight into the molecular determinants of neonicotinoid binding and selectivity.
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Affiliation(s)
- Cheng Yin
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
- Hubei Engineering Technology Center for Pest Forewarning and Management, College of Agriculture, Yangtze University, Jingzhou, Hubei, P. R. China
| | - Andrias O. O’Reilly
- School of Biological & Environmental Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Shao-Nan Liu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Tian-Hua Du
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Pei-Pan Gong
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Cheng-Jia Zhang
- Hunan Provincial Key laboratory of Pesticide Biology and Precise Use Techology, Hunan Agricultural Biotechnology Research Institute, Changsha, P. R. China
| | - Xue-Gao Wei
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Jing Yang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Ming-Jiao Huang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Bu-Li Fu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Jin-Jin Liang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Hu Xue
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Jin-Yu Hu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Yao Ji
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Chao He
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - He Du
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Chao Wang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Rong Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Qi-Mei Tan
- Hunan Provincial Key laboratory of Pesticide Biology and Precise Use Techology, Hunan Agricultural Biotechnology Research Institute, Changsha, P. R. China
| | - Han-Tang Lu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Wen Xie
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Dong Chu
- Key Laboratory of Integrated Crop Pest Management of Shandong Province, School of Agriculture and Plant Protection, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Xu-Guo Zhou
- Department of Entomology, University of Kentucky, Lexington, Kentucky, United States of America
| | - Ralf Nauen
- Bayer AG, Crop Science Division, R&D, Monheim, Germany
| | - Lian-You Gui
- Hubei Engineering Technology Center for Pest Forewarning and Management, College of Agriculture, Yangtze University, Jingzhou, Hubei, P. R. China
| | - Chris Bass
- Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Penryn, Cornwall, United Kingdom
| | - Xin Yang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - You-Jun Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
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3
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Yin C, Gui LY, Du TH, Zhang CJ, Wei XG, Yang J, Huang MJ, Fu BL, Gong PP, Liang JJ, Liu SN, Xue H, Hu JY, Ji Y, He C, Du H, Wang C, Zhang R, Wu QJ, Yang X, Zhang YJ. Knockdown of the Nicotinic Acetylcholine Receptor β1 Subunit Decreases the Susceptibility to Five Neonicotinoid Insecticides in Whitefly ( Bemisia tabaci). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7221-7229. [PMID: 37157975 DOI: 10.1021/acs.jafc.3c00782] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The sweet potato whitefly, Bemisia tabaci, (Gennadius) (Hemiptera:Aleyrodidae) is a global pest of crops. Neonicotinoids are efficient insecticides used for control of this pest. Insecticidal targets of neonicotinoids are insect nicotinic acetylcholine receptors (nAChRs). Here, we characterized and cloned the full length of the nAChR β1 subunit (BTβ1) in B. tabaci and confirmed the consistency of BTβ1 in B. tabaci MEAM1 and MED. Expression levels of BTβ1 in different developmental stages and body parts of adults were investigated and compared in B. tabaci MED. dsRNA was prepared to knock down BTβ1 in adult B. tabaci and significantly decreases the susceptibility to five neonicotinoid insecticides, including imidacloprid, clothianidin, thiacloprid, nitenpyram, and dinotefuran. This study indicated BTβ1 as a notable site influencing the susceptibility of B. tabaci to neonicotinoids.
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Affiliation(s)
- Cheng Yin
- Hubei Engineering Technology Center for Pest Forewarning and Management, College of Agriculture, Yangtze University, Jingzhou, Hubei 434025, People's Republic of China
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Lian-You Gui
- Hubei Engineering Technology Center for Pest Forewarning and Management, College of Agriculture, Yangtze University, Jingzhou, Hubei 434025, People's Republic of China
| | - Tian-Hua Du
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Cheng-Jia Zhang
- Hunan Provincial Key laboratory of Pesticide Biology and Precise Use Techology, Hunan Agricultural Biotechnology Research Institute, Changsha, Hunan 410125, People's Republic of China
| | - Xue-Gao Wei
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Jing Yang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Ming-Jiao Huang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Bu-Li Fu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Pei-Pan Gong
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Jin-Jin Liang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Shao-Nan Liu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Hu Xue
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Jin-Yu Hu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Yao Ji
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Chao He
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - He Du
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Chao Wang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Rong Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Qing-Jun Wu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - Xin Yang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
| | - You-Jun Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China
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Yuan GR, Chen ML, Peng ML, Lei W, Meng LW, Dou W, Wang JJ. Knockdown of a Nicotinic Acetylcholine Receptor Subunit Gene Bdorβ1 Decreases Susceptibility to Oxa-Bridged trans- instead of cis-Nitromethylene Neonicotinoid Insecticides in Bactrocera dorsalis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:13554-13562. [PMID: 36224100 DOI: 10.1021/acs.jafc.2c04709] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels that mediate the fast action of acetylcholine in synaptic cholinergic transmissions. Insect nAChRs are the target of several classes of insecticides. Here, the full-length cDNA encoding a nAChR beta1 subunit (Bdorβ1) was identified and characterized from a destructive pest, Bactrocera dorsalis. The amino acid sequence of Bdorβ1 shows high identities to other insect nAChRs β1 subunits. Double injection of dsBdorβ1 reduced the expression of Bdorβ1 and in turn significantly decreased susceptibility to oxa-bridged trans- instead of cis-nitromethylene neonicotinoids. Our results support the involvement of Bdorβ1 in the susceptibility of B. dorsalis to oxa-bridged trans- instead of cis-nitromethylene neonicotinoids and imply that these two classes of neonicotinoids might be acting at different nAChR subtypes.
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Affiliation(s)
- Guo-Rui Yuan
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Meng-Ling Chen
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Meng-Lan Peng
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Wei Lei
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Li-Wei Meng
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Wei Dou
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Jin-Jun Wang
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China
- Key Laboratory of Entomology and Pest Control Engineering (Chongqing), College of Plant Protection, Southwest University, Chongqing 400716, China
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5
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Kapoor D, Khan A, O'Donnell MJ, Kolosov D. Novel mechanisms of epithelial ion transport: insights from the cryptonephridial system of lepidopteran larvae. CURRENT OPINION IN INSECT SCIENCE 2021; 47:53-61. [PMID: 33866042 DOI: 10.1016/j.cois.2021.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/01/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
Lepidopterans are among the most widespread and easily recognized insects. Whereas adult lepidopterans are known for their beauty and ecological importance as pollinators and sources of food for other animals, larvae are economically important pests of forests and agricultural crops. In the larval body, rapid growth while feeding on plant-based diet is associated with extreme alkalinity (up to pH = 11) of the midgut lumen that helps digest plant proteins. Additionally, the presence of plant secondary metabolites which serve as anti-herbivory agents requires uninterrupted excretory function, accomplished primarily by the Malpighian tubules (MTs). The so-called cryptonephridial condition, along with extreme regional heterogeneity of the MTs, and the ability to rapidly and reversibly alter the direction of epithelial ion transport are features that allow uninterrupted MT functioning and recycling of base equivalents. Studies of MTs in lepidopteran larvae have revealed that rapid adjustments in epithelial ion transport include unexpected roles for voltage-gated, ligand-gated and mechanosensitive ion channels, as well as gap junctions. These molecular components are present in epithelia of a variety of vertebrates and invertebrates and thus are likely to constitute a universal epithelial toolkit for rapid autonomous regulation of epithelial function.
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Affiliation(s)
| | - Aliyyah Khan
- Department of Biology, McMaster University, Hamilton, Canada
| | | | - Dennis Kolosov
- Department of Biological Sciences, California State University San Marcos, San Marcos, USA.
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Shan T, Chen C, Ding Q, Chen X, Zhang H, Chen A, Shi X, Gao X. Molecular characterization and expression profiles of nicotinic acetylcholine receptors in Bradysia odoriphaga. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 165:104563. [PMID: 32359542 DOI: 10.1016/j.pestbp.2020.104563] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 01/16/2020] [Accepted: 03/01/2020] [Indexed: 06/11/2023]
Abstract
Bradysia odoriphaga is a destructive insect pest, damaging more than 30 crop species. Nicotinic acetylcholine receptors (nAChRs) mediating fast excitatory transmission in the central nervous system in insects are the molecular targets of some economically important insecticides including imidacloprid, which has been widely used to control B. odoriphaga in China since 2013. However, the clear characterization about nAChRs in B. odoriphaga is still unknown. Hence, our objective is to identify and characterize the nAChR gene family in B. odoriphaga based on the transcriptome database and sequence, phylogenetic and expression profiles analysis. In this study, we cloned seven nAChR subunit genes from B. odoriphaga, including Boα1, Boα2, Boα3, Boα7, Boα8, Boβ1 and Boβ3. Sequence analysis revealed that the seven nAChR subunits of B. odoriphaga shared the typical structural features with Drosophila melanogaster nAChR α1 subunit, including an extracellular N-terminal domain containing six functional loops (loop A-F), a signature Cys-loop with two disulfide bond-forming cysteines separated by 13 amino acid residues, and four typical transmembrane helices (TM1-TM4) in the C-terminal region. Phylogenetic analysis suggested that seven nAChR subunit genes in B. odoriphaga are evolutionarily conserved among four model insects, including D. melanogaster, Bombyx mori, Apis mellifera and Tribolium castaneum. Meanwhile, nAChR α4, α5, α6 and β2 subunit genes may potentially exist in B. odoriphaga, which need further study. Furthermore, quantitative real-time PCR analysis revealed the specific expression pattern of nAChR subunits in three body parts including head, thorax and abdomen, and developmental expression pattern of nAChR subunits throughout the B. odoriphaga life cycle. These results provided necessary information for further investigating the diverse functions of nAChRs in B. odoriphaga.
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Affiliation(s)
- Tisheng Shan
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Chengyu Chen
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Qian Ding
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Xuewei Chen
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Huihui Zhang
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Anqi Chen
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Xueyan Shi
- Department of Entomology, China Agricultural University, Beijing 100193, China..
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing 100193, China
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Hao M, Sun Z, Xu J, Lv M, Xu H. Semisynthesis and Pesticidal Activities of Derivatives of the Diterpenoid Andrographolide and Investigation on the Stress Response of Aphis citricola Van der Goot (Homoptera: Aphididae). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:4131-4143. [PMID: 32162924 DOI: 10.1021/acs.jafc.9b08242] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To discover natural-product-based pesticides, 7β-oxycarbonylandrographolide derivatives were stereoselectively constructed from a labdane diterpenoid andrographolide. Among them, 2'-(n)Pr-1',3'-dioxin-7β-oxy(m-Cl)benzoylandrographolide (IIc), 2'-(n)Pr-1',3'-dioxin-7β-oxyacetylandrographolide (IIf), 2'-(p-Me)Ph-1',3'-dioxin-7β-oxy(o-Cl)benzoylandrographolide (Vb), and 2'-(p-Me)Ph-1',3'-dioxin-7β-oxy(m-Cl)benzoylandrographolide (Vc) against Mythimna separata displayed the most promising growth inhibitory activity; 2'-(n)Pr-1',3'-dioxin-7β-oxy(o-Cl)benzoylandrographolide (IIb: LC50 = 0.406 mg/mL) and IIc (LC50 = 0.415 mg/mL) exhibited the most pronounced acaricidal activity (andrographolide; LC50: 5.106 mg/mL) and good control effects against Tetranychus cinnabarinus; compounds Ic, IIe, and Va-c (LD50 = 0.035-0.039 μg/nymph) showed potent aphicidal activity (andrographolide: LD50 = 0.178 μg/nymph), and compounds IIe and Vb showed good control effects against Aphis citricola. Moreover, it was found that Hsp70 of A. citricola was an important gene involved in stress response to andrographolide and its derivatives.
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Affiliation(s)
- Meng Hao
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Zhiqiang Sun
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Jianwei Xu
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Min Lv
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Hui Xu
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province 712100, China
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province 315211, China
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Zhang B, Sun Z, Lv M, Xu H. Semisynthesis of Matrinic Acid/Alcohol/Ester Derivatives, Their Pesticidal Activities, and Investigation of Mechanisms of Action against Tetranychus cinnabarinus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:12898-12910. [PMID: 30452245 DOI: 10.1021/acs.jafc.8b04965] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To discover new natural-product-based potential pesticides, 85 matrinic acid/alcohol/ester derivatives were synthesized by structural modifications of a quinolizidine alkaloid matrine. N-(4-Methyl)benzylmatrinyl n-decylate (76) and N-(2-chloro)benzylmatrinyl n-undecylate (86) exhibited greater than seven-fold more pronounced acaricidal activity than matrine against Tetranychus cinnabarinus; N-(2-chloro)benzylmatrinyl benzoate (80) showed the most promising insecticidal activity against Mythimna separata. The carboxyl group of matrinic acids and introduction of n-decyl/ n-undecylcarbonyl into matrinic alcohols were important for the acaricidal activity; introduction of alkyloxy into the carboxyl of matrinic acids and introduction of the electron-withdrawing groups on the N-benzyl of matrinic esters were necessary for the insecticidal activity. Through RT-PCR and qRT-PCR analysis, it was shown that the lactam ring of matrine was vital for action on VGSC; opening the lactam ring of matrine and the alkylcarbonyl of side-chain were two important factors for acting with α1, α2, and α4 nAChR subunits; α1, α2, α4, and β3 subunits may be the target of action of compound 86 against T. cinnabarinus.
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Taillebois E, Cartereau A, Jones AK, Thany SH. Neonicotinoid insecticides mode of action on insect nicotinic acetylcholine receptors using binding studies. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 151:59-66. [PMID: 30704714 DOI: 10.1016/j.pestbp.2018.04.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 04/14/2018] [Accepted: 04/17/2018] [Indexed: 06/09/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) are the main target of neonicotinoid insecticides, which are widely used in crop protection against insect pests. Electrophysiological and molecular approaches have demonstrated the presence of several nAChR subtypes with different affinities for neonicotinoid insecticides. However, the precise mode of action of neonicotinoids on insect nAChRs remains to be elucidated. Radioligand binding studies with [3H]-α-bungarotoxin and [3H]-imidacloprid have proved instructive in understanding ligand binding interactions between insect nAChRs and neonicotinoid insecticides. The precise binding site interactions have been established using membranes from whole body and specific tissues. In this review, we discuss findings concerning the number of nAChR binding sites against neonicotinoid insecticides from radioligand binding studies on native tissues. We summarize the data available in the literature and compare the binding properties of the most commonly used neonicotinoid insecticides in several insect species. Finally, we demonstrate that neonicotinoid-nAChR binding sites are also linked to biological samples used and insect species.
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Affiliation(s)
- Emiliane Taillebois
- Université François Rabelais de Tours, Laboratoire Nutrition, Croissance et Cancer, INSERM 1069, 37032 Tours, France
| | - Alison Cartereau
- Université d'Orléans, LBLGC USC INRA 1328, 1 rue de Chartres, 45067 Orléans, France
| | - Andrew K Jones
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
| | - Steeve H Thany
- Université d'Orléans, LBLGC USC INRA 1328, 1 rue de Chartres, 45067 Orléans, France.
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Maloney EM, Morrissey CA, Headley JV, Peru KM, Liber K. Can chronic exposure to imidacloprid, clothianidin, and thiamethoxam mixtures exert greater than additive toxicity in Chironomus dilutus? ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 156:354-365. [PMID: 29573726 DOI: 10.1016/j.ecoenv.2018.03.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 01/20/2018] [Accepted: 03/02/2018] [Indexed: 06/08/2023]
Abstract
Widespread agricultural use of neonicotinoid insecticides has resulted in frequent detection of mixtures of these compounds in global surface waters. Recent evidence suggests that neonicotinoid mixtures can elicit synergistic toxicity in aquatic insects under acute exposure conditions, however this has not been validated for longer exposures more commonly encountered in the environment. Therefore, we aimed to characterize the chronic (28-day) toxicity of imidacloprid, clothianidin, and thiamethoxam mixtures under different doses and mixture ratios to determine if the assumption of synergistic toxicity would hold under more environmentally realistic exposure settings. The sensitive aquatic insect Chironomus dilutus was used as a representative test species, and successful emergence was used as a chronic endpoint. Applying the MIXTOX modeling approach, predictive parametric models were fitted using single-compound toxicity data and statistically compared to observed toxicity in subsequent mixture tests. Imidacloprid-clothianidin, clothianidin-thiamethoxam and imidacloprid-clothianidin-thiamethoxam mixtures did not significantly deviate from concentration-additive toxicity. However, the cumulative toxicity of the imidacloprid-thiamethoxam mixture deviated from the concentration-additive reference model, displaying dose-ratio dependent synergism and resulting in up to a 10% greater reduction in emergence from that predicted by concentration addition. Furthermore, exposure to select neonicotinoid mixtures above 1.0 toxic unit tended to shift sex-ratios toward more male-dominated populations. Results indicate that, similar to acute exposures, the general assumption of joint additivity cannot adequately describe chronic cumulative toxicity of all neonicotinoid mixtures. Indeed, our observations of weak synergism and sex-ratio shifts elicited by some mixture combinations should be considered in water quality guideline development and environmental risk assessment practices for neonicotinoid insecticides, and explored in further investigations of the effects of neonicotinoid mixtures on aquatic communities.
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Affiliation(s)
- E M Maloney
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - C A Morrissey
- Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; School of Environment and Sustainability, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - J V Headley
- Watershed Hydrology and Ecology Research Division, Water Science and Technology, Environment and Climate Change Canada, Saskatoon, Saskatchewan, Canada
| | - K M Peru
- Watershed Hydrology and Ecology Research Division, Water Science and Technology, Environment and Climate Change Canada, Saskatoon, Saskatchewan, Canada
| | - K Liber
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Institute of Loess Plateau, Shanxi University, Taiyuan, Shanxi, PR China.
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Pamminger T, Botías C, Goulson D, Hughes WOH. A mechanistic framework to explain the immunosuppressive effects of neurotoxic pesticides on bees. Funct Ecol 2018. [DOI: 10.1111/1365-2435.13119] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Christina Botías
- School of Life SciencesUniversity of Sussex Brighton UK
- Estación Biológica de Doñana (EBD‐CSIC) Seville Spain
| | - Dave Goulson
- School of Life SciencesUniversity of Sussex Brighton UK
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12
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Bao H, Liu Y, Zhang Y, Liu Z. Two distinctive β subunits are separately involved in two binding sites of imidacloprid with different affinities in Locusta migratoria manilensis. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 140:36-41. [PMID: 28755692 DOI: 10.1016/j.pestbp.2017.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 05/31/2017] [Accepted: 06/02/2017] [Indexed: 06/07/2023]
Abstract
Due to great diversity of nicotinic acetylcholine receptor (nAChR) subtypes in insects, one β subunit may be contained in numerous nAChR subtypes. In the locust Locusta migratoria, a model insect species with agricultural importance, the third β subunits (Locβ3) was identified in this study, which reveals at least three β subunits in this insect species. Imidacloprid was found to bind nAChRs in L. migratoria central nervous system at two sites with different affinities, with Kd values of 0.16 and 10.31nM. The specific antisera (L1-1, L2-1 and L3-1) were raised against fusion proteins at the large cytoplasmic loop of Locβ1, Locβ2 and Locβ3 respectively. Specific immunodepletion of Locβ1 with antiserum L1-1 resulted in the selective loss of the low affinity binding site for imidacloprid, whereas the immunodepletion of Locβ3 with L3-1 caused the selective loss of the high affinity site. Dual immunodepletion with L1-1 and L3-1 could completely abolish imidacloprid binding. In contrast, the immunodepletion of Locβ2 had no significant effect on the specific [3H]imidacloprid binding. Taken together, these data indicated that Locβ1 and Locβ3 were respectively contained in the low- and high-affinity binding sites for imidacloprid in L. migratoria, which is different to the previous finding in Nilaparvata lugens that Nlβ1 was in two binding sites for imidacloprid. The involvement of two β subunits separately in two binding sites may decrease the risk of imidacloprid resistance due to putative point mutations in β subunits in L. migratoria.
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Affiliation(s)
- Haibo Bao
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, 50 St. Zhongling, Nanjing 210014, China
| | - Yang Liu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China
| | - Yixi Zhang
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China
| | - Zewen Liu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China.
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Xu G, Gu GX, Teng ZW, Wu SF, Huang J, Song QS, Ye GY, Fang Q. Identification and expression profiles of neuropeptides and their G protein-coupled receptors in the rice stem borer Chilo suppressalis. Sci Rep 2016; 6:28976. [PMID: 27353701 PMCID: PMC4926255 DOI: 10.1038/srep28976] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 06/08/2016] [Indexed: 01/16/2023] Open
Abstract
In insects, neuropeptides play important roles in the regulation of multiple physiological processes by binding to their corresponding receptors, which are primarily G protein-coupled receptors (GPCRs). The genes encoding neuropeptides and their associated GPCRs in the rice stem borer Chilo suppressalis were identified by a transcriptomic analysis and were used to identify potential targets for the disruption of physiological processes and the protection of crops. Forty-three candidate genes were found to encode the neuropeptide precursors for all known insect neuropeptides except for arginine-vasopressin-like peptide (AVLP), CNMamide, neuropeptide-like precursors 2-4 (NPLP2-4), and proctolin. In addition, novel alternative splicing variants of three neuropeptide genes (allatostatin CC, CCHamide 1, and short neuropeptide F) are reported for the first time, and 51 putative neuropeptide GPCRs were identified. Phylogenetic analyses demonstrated that 44 of these GPCRs belong to the A-family (or rhodopsin-like), 5 belong to the B-family (or secretin-like), and 2 are leucine-rich repeat-containing GPCRs. These GPCRs and their likely ligands were also described. qRT-PCR analyses revealed the expression profiles of the neuropeptide precursors and GPCR genes in various tissues of C. suppressalis. Our study provides fundamental information that may further our understanding of neuropeptidergic signaling systems in Lepidoptera and aid in the design of peptidomimetics, pseudopeptides or small molecules capable of disrupting the physiological processes regulated by these signaling molecules and their receptors.
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Affiliation(s)
- Gang Xu
- State Key Laboratory of Rice Biology &Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Gui-Xiang Gu
- State Key Laboratory of Rice Biology &Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zi-Wen Teng
- State Key Laboratory of Rice Biology &Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Shun-Fan Wu
- State Key Laboratory of Rice Biology &Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China.,College of Plant Protection, State &Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, China
| | - Jia Huang
- State Key Laboratory of Rice Biology &Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qi-Sheng Song
- Division of Plant Sciences, Missouri University, Columbia, MO 65211, USA
| | - Gong-Yin Ye
- State Key Laboratory of Rice Biology &Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qi Fang
- State Key Laboratory of Rice Biology &Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
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