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Malandrakis AA, Varikou K, Kavroulakis Ν, Nikolakakis A, Dervisi I, Reppa CΙ, Papadakis S, Holeva MC, Chrysikopoulos CV. Copper nanoparticles interfere with insecticide sensitivity, fecundity and endosymbiont abundance in olive fruit fly Bactrocera oleae (Diptera: Tephritidae). PEST MANAGEMENT SCIENCE 2024; 80:3640-3649. [PMID: 38456555 DOI: 10.1002/ps.8068] [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: 01/19/2024] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 03/09/2024]
Abstract
BACKGROUND The potential of copper nanoparticles (Cu-NPs) to be used as an alternative control strategy against olive fruit flies (Bactrocera oleae) with reduced sensitivity to the pyrethroid deltamethrin and the impact of both nanosized and bulk copper hydroxide (Cu(OH)2) on the insect's reproductive and endosymbiotic parameters were investigated. RESULTS The application of nanosized and bulk copper applied by feeding resulted in significant levels of adult mortality, comparable to or surpassing those achieved with deltamethrin at recommended doses. Combinations of Cu-NPs or copper oxide nanoparticles (CuO-NPs) with deltamethrin significantly enhanced the insecticide's efficacy against B. oleae adults. When combined with deltamethrin, Cu-NPs significantly reduced the mean total number of offspring compared with the control, and the number of stings, pupae, female and total number of offspring compared with the insecticide alone. Both bulk and nanosized copper negatively affected the abundance of the endosymbiotic bacterium Candidatus Erwinia dacicola which is crucial for the survival of B. oleae larvae. CONCLUSION The Cu-NPs can aid the control of B. oleae both by reducing larval survival and by enhancing deltamethrin performance in terms of toxicity and reduced fecundity, providing an effective anti-resistance tool and minimizing the environmental footprint of synthetic pesticides by reducing the required doses for the control of the pest. © 2024 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
| | - Kyriaki Varikou
- Hellenic Agricultural Organization 'ELGO-Dimitra', Institute for Olive Tree, Subtropical Plants and Viticulture, Agrokipio-Souda, Chania, Greece
| | - Νektarios Kavroulakis
- Hellenic Agricultural Organization 'ELGO-Dimitra', Institute for Olive Tree, Subtropical Plants and Viticulture, Agrokipio-Souda, Chania, Greece
| | - Antonis Nikolakakis
- Hellenic Agricultural Organization 'ELGO-Dimitra', Institute for Olive Tree, Subtropical Plants and Viticulture, Agrokipio-Souda, Chania, Greece
| | - Irene Dervisi
- Scientific Directorate of Phytopathology, Laboratory of Bacteriology, Benaki Phytopathological Institute, Kifissia, Greece
| | - Chrysavgi Ι Reppa
- Scientific Directorate of Phytopathology, Laboratory of Bacteriology, Benaki Phytopathological Institute, Kifissia, Greece
| | | | - Maria C Holeva
- Scientific Directorate of Phytopathology, Laboratory of Bacteriology, Benaki Phytopathological Institute, Kifissia, Greece
| | - Constantinos V Chrysikopoulos
- School of Environmental Engineering, Technical University of Crete, Chania, Greece
- Department of Civil Infrastructure and Environmental Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
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Dang TT, Huang YH, Ott S, Harvey PJ, Gilding EK, Tombling BJ, Chan LY, Kaas Q, Claridge-Chang A, Craik DJ. The acyclotide ribe 31 from Rinorea bengalensis has selective cytotoxicity and potent insecticidal properties in Drosophila. J Biol Chem 2022; 298:102413. [PMID: 36007611 PMCID: PMC9513267 DOI: 10.1016/j.jbc.2022.102413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022] Open
Abstract
Cyclotides and acyclic versions of cyclotides (acyclotides) are peptides involved in plant defense. These peptides contain a cystine knot motif formed by three interlocked disulfide bonds, with the main difference between the two classes being the presence or absence of a cyclic backbone, respectively. The insecticidal activity of cyclotides is well documented, but no study to date explores the insecticidal activity of acyclotides. Here, we present the first in vivo evaluation of the insecticidal activity of acyclotides from Rinorea bengalensis on the vinegar fly Drosophila melanogaster. Of a group of structurally comparable acyclotides, ribe 31 showed the most potent toxicity when fed to D. melanogaster. We screened a range of acyclotides and cyclotides and found their toxicity toward human red blood cells was substantially lower than toward insect cells, highlighting their selectivity and potential for use as bioinsecticides. Our confocal microscopy experiments indicated their cytotoxicity is likely mediated via membrane disruption. Furthermore, our surface plasmon resonance studies suggested ribe 31 preferentially binds to membranes containing phospholipids with phosphatidyl-ethanolamine headgroups. Despite having an acyclic backbone, we determined the three-dimensional NMR solution structure of ribe 31 is similar to that of cyclotides. In summary, our results suggest that, with further optimization, ribe 31 could have applications as an insecticide due to its potent in vivo activity against D. melanogaster. More broadly, this work advances the field by demonstrating that acyclotides are more common than previously thought, have potent insecticidal activity, and have the advantage of potentially being more easily manufactured than cyclotides.
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Affiliation(s)
- Tien T Dang
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Yen-Hua Huang
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Stanislav Ott
- Program in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857
| | - Peta J Harvey
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Edward K Gilding
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Benjamin J Tombling
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Lai Y Chan
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Quentin Kaas
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Adam Claridge-Chang
- Program in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857; Institute for Molecular and Cell Biology, A*STAR, Singapore, 138673; Department of Physiology, National University of Singapore, Singapore, 117593
| | - David J Craik
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland, 4072, Australia.
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Van Timmeren S, Sial AA, Lanka SK, Spaulding NR, Isaacs R. Development of a rapid assessment method for detecting insecticide resistance in spotted wing Drosophila (Drosophila suzukii Matsumura). PEST MANAGEMENT SCIENCE 2019; 75:1782-1793. [PMID: 30653815 DOI: 10.1002/ps.5341] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 01/07/2019] [Accepted: 01/11/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Spotted wing Drosophila is an invasive pest of fruit crops in most production regions globally, and insecticides are commonly used for its control. The biology of this pest combined with repeated pesticide exposure increases the risk of resistance to insecticides. We tested malathion, methomyl, spinetoram, spinosad, and zeta-cypermethrin against multiple colonies from each state using a contact bioassay method to determine diagnostic doses for assessment of insecticide susceptibility in this species. These were used to test populations collected in Michigan and Georgia, USA. RESULTS Concentrations required to reach 50% (LC50 ) and 90% mortality (LC90 ) were calculated for the tested populations, and male mortality consistently occurred at lower concentrations than female mortality. Fly mortality did not vary significantly among populations collected from unmanaged, organic, and conventional fields. Similar results were found using the diagnostic concentrations applied to glass jars. CONCLUSIONS Using this method, samples of D. suzukii that are freshly caught or reared from fruit can be tested within 1 day for their mortality in response to discriminating doses of five key insecticides. This method can be used to inform proactive resistance management strategies within integrated pest management programs. © 2019 Society of Chemical Industry.
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Affiliation(s)
| | - Ashfaq A Sial
- Department of Entomology, University of Georgia, Athens, GA, USA
| | - Srinivas K Lanka
- Department of Entomology, Kansas State University, Manhattan, KS, USA
| | | | - Rufus Isaacs
- Department of Entomology, Michigan State University, East Lansing, MI, USA
- Ecology, Evolutionary Biology, and Behavior Program, Michigan State University, East Lansing, MI, USA
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Mendonça TP, Davi de Aquino J, Junio da Silva W, Mendes DR, Campos CF, Vieira JS, Barbosa NP, Carvalho Naves MP, Olegário de Campos Júnior E, Alves de Rezende AA, Spanó MA, Bonetti AM, Vieira Santos VS, Pereira BB, Resende de Morais C. Genotoxic and mutagenic assessment of spinosad using bioassays with Tradescantia pallida and Drosophila melanogaster. CHEMOSPHERE 2019; 222:503-510. [PMID: 30721808 DOI: 10.1016/j.chemosphere.2019.01.182] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/28/2019] [Accepted: 01/30/2019] [Indexed: 06/09/2023]
Abstract
Spinosad (SPN) is a naturally-occurring insecticide obtained from the fermentation process of the actinomycete Saccharopolyspora spinosa. Owing to the larvicidal action, the compound has been used in the control of Aedes aegypti. As a new insecticide commercially available in the market, few data are reported on genotoxic effects in non-target organisms. The objective of the present study was to evaluate the mutagenic effect of SPN through the Micronucleus Test in Tradescantia pallida (Trad-MCN) and using the mutation and somatic recombination test in Drosophila melanogaster (SMART). At the Trad-MCN, after acclimatization (24 h), T. pallida stems were submitted to chronic treatment with SPN at concentrations of 0.156; 0.312; 0.625; 1.25 and 2.5 g/L solution for 24 h, followed by a recovery period. In SMART, considering the third stage larvae, offspring resulting from the ST and HB crossing were placed on chronic treatment (48 h) with 0.039; 0.078 and 0.156 μg/mL of SPN solution. No mutagenic effect was observed at any of the evaluated concentrations in SMART. Additionally, SPN is more toxic after metabolism via CYP6A2 (cytochrome P450) in D. melanogaster. However, SPN at the concentrations of 0.625; 1.25 and 2.5 g/L was able to induce high frequency of micronuclei in T. pallida. Under the experimental conditions of T. pallida in the present study, SPN caused genotoxic activity.
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Affiliation(s)
- Tarcísio Paiva Mendonça
- Department of Cell Biology, Fundação Carmelitana Mário Palmério, 38500-000, Monte Carmelo, Minas Gerais, Brazil
| | - Jéssica Davi de Aquino
- Department of Cell Biology, Fundação Carmelitana Mário Palmério, 38500-000, Monte Carmelo, Minas Gerais, Brazil
| | - Weverson Junio da Silva
- Department of Cell Biology, Fundação Carmelitana Mário Palmério, 38500-000, Monte Carmelo, Minas Gerais, Brazil
| | - Daniele Ruela Mendes
- Department of Cell Biology, Fundação Carmelitana Mário Palmério, 38500-000, Monte Carmelo, Minas Gerais, Brazil
| | - Carlos Fernando Campos
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | - Jéssica Soares Vieira
- Department of Cell Biology, Fundação Carmelitana Mário Palmério, 38500-000, Monte Carmelo, Minas Gerais, Brazil
| | - Nathalya Pereira Barbosa
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | - Maria Paula Carvalho Naves
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | | | | | - Mário Antônio Spanó
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | - Ana Maria Bonetti
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | - Vanessa Santana Vieira Santos
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | - Boscolli Barbosa Pereira
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil; Institute of Geography, Federal University of Uberlândia, Campus Santa Mônica, 38400-902, Uberlândia, Minas Gerais, Brazil.
| | - Cássio Resende de Morais
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
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Chowański S, Chudzińska E, Lelario F, Ventrella E, Marciniak P, Miądowicz-Kobielska M, Spochacz M, Szymczak M, Scrano L, Bufo SA, Adamski Z. Insecticidal properties of Solanum nigrum and Armoracia rusticana extracts on reproduction and development of Drosophila melanogaster. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 162:454-463. [PMID: 30015192 DOI: 10.1016/j.ecoenv.2018.07.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 07/06/2018] [Accepted: 07/08/2018] [Indexed: 06/08/2023]
Abstract
Plant-derived substances, because of high biological activity, arouse interest of many scientists. Thus, plant extracts and pure substances are intensively studied on various insects as potential insecticides. In such studies, D. melanogaster is one of the most important model organisms. In our studies, we analysed the contents of two plant extracts and tested the activity of their main components against fruit flies and compared observed effects to effects caused by crude extracts. Then, we assessed the development of the next, unexposed generation. The chemical analysis of extracts revealed the presence of numerous glycoalkaloids and glucosinolates in Solanum nigrum and Armoracia rusticana extracts. These extracts, as well as their main components, revealed lethal and sublethal effects, such as the altered developmental time of various life stages and malformations of imagoes. Interestingly, the results for the extracts and pure main compounds often varied. Some of the results were also observed in the unexposed generation. These results confirm that the tested plants produce a range of substances with potential insecticidal effects. The different effects of extracts and pure main components suggest the presence of minor compounds, which should be tested as insecticides.
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Affiliation(s)
- Szymon Chowański
- Department of Animal Physiology and Development, Adam Mickiewicz University in Poznań, Poznań, Poland.
| | - Ewa Chudzińska
- Department of Genetics, Adam Mickiewicz University in Poznań, Poznań, Poland.
| | - Filomena Lelario
- Department of Sciences, University of Basilicata, Potenza, Italy.
| | | | - Paweł Marciniak
- Department of Animal Physiology and Development, Adam Mickiewicz University in Poznań, Poznań, Poland.
| | | | - Marta Spochacz
- Department of Animal Physiology and Development, Adam Mickiewicz University in Poznań, Poznań, Poland.
| | - Monika Szymczak
- Department of Animal Physiology and Development, Adam Mickiewicz University in Poznań, Poznań, Poland.
| | - Laura Scrano
- Department of European and Mediterranean Cultures, University of Basilicata, Matera, Italy.
| | | | - Zbigniew Adamski
- Department of Animal Physiology and Development, Adam Mickiewicz University in Poznań, Poznań, Poland; Electron and Confocal Microscope Laboratory, Adam Mickiewicz University in Poznań, Poznań, Poland.
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Rix RR, Cutler GC. Does multigenerational exposure to hormetic concentrations of imidacloprid precondition aphids for increased insecticide tolerance? PEST MANAGEMENT SCIENCE 2018; 74:314-322. [PMID: 28905473 DOI: 10.1002/ps.4731] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 09/06/2017] [Accepted: 09/06/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Hormetic preconditioning, whereby exposure to mild stress primes an organism to better tolerate subsequent stress, is well documented. It is unknown if exposure to hormetic concentrations of insecticide can trans-generationally prime insects to better tolerate insecticide exposure, or whether exposure to hormetic concentrations of insecticide can induce mutations in genes responsible for insecticide resistance. Using the aphid Myzus persicae (Sulzer) and the insecticide imidacloprid as a model, we examined if exposure to mildly toxic and hormetic concentrations of imidacloprid reduced aphid susceptibility to insecticides across four generations, and whether such exposures induced mutations in the imidacloprid binding site in post-synaptic nicotinic acetylcholine receptors. RESULTS Chronic, multigenerational exposure of aphids to hormetic concentrations of imidacloprid primed offspring to better survive exposure to certain concentrations of imidacloprid, but not exposure to spirotetramat, an insecticide with a different mode of action. Exposure to hormetic and mildly toxic concentrations of imidacloprid did not result in mutations in any of the examined nicotinic acetylcholine receptor subunits. CONCLUSION Our findings demonstrate that exposure to hormetic concentrations of insecticide can prime insects to better withstand subsequent chemical stress, but this is dependent upon the insecticide exposure scenario, and may be subtle over generations. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Rachel R Rix
- Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, Canada
| | - G Christopher Cutler
- Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, Canada
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Taspinar MS, Aydin M, Arslan E, Yaprak M, Agar G. 5-Aminolevulinic acid improves DNA damage and DNA Methylation changes in deltamethrin-exposed Phaseolus vulgaris seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 118:267-273. [PMID: 28666233 DOI: 10.1016/j.plaphy.2017.06.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 06/20/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
Deltamethrin, synthetic type II pyrethroid, is one of the most widely used pesticide in agriculture. Intense use of deltamethrin can cause permanant or temporary damages in nontarget plant species. In this study, we aimed to determine DNA methylation change and DNA damage level in Phaseolus vulgaris seedlings subjected to different concentrations of deltamethrin (0.02, 0.1 and 0.5 ppm). Coupled Restriction Enzyme Digestion-Random Amplification (CRED-RA) was performed to analyze the changes of DNA methylation as well as Randomly Amplified Polymorphic DNA (RAPD) was used for genotoxic influences estimation and genomic stability. The results showed that deltamethrin caused to increase in RAPD profile changes (DNA damage) and reduce in Genomic Template Stability (GTS). GTS declined markedly in relation to increasing concentration of deltamethrin applied. The lowest GTS value (71.4%) observed in 0.5 ppm deltamethrin treatment. Also, DNA hypermethylation was occurred in all treatments. Moreover, alleviative effect of 5-aminolevulinic acid (ALA) (20, 40 and 80 mg/l), one of the plant growth regulators, was tested against the 0.5 ppm deltamethrin. Adverse effects of deltamethrin on GTS decreased after ALA treatments, especially 20 mg/l concentration. As a result, we concluded that ALA has a strong anti-genotoxic agent against deltamethrin and it could be an alternative chemical to reduce genetic damage in plants under deltamethrin stress conditions.
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Affiliation(s)
- Mahmut Sinan Taspinar
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ataturk University, Erzurum 25240, Turkey
| | - Murat Aydin
- Department of Field Crops, Faculty of Agriculture, Ataturk University, 25240 Erzurum, Turkey
| | - Esra Arslan
- Department of Biology, Faculty of Science, Ataturk University, Erzurum 25240, Turkey.
| | - Muhammet Yaprak
- Central Research and Application Laboratories, Agri Ibrahim Cecen University, Agri 04100, Turkey
| | - Guleray Agar
- Department of Biology, Faculty of Science, Ataturk University, Erzurum 25240, Turkey
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In vivo Toxicity Assessment of Antimicrobial Peptides (AMPs LR14) Derived from Lactobacillus plantarum Strain LR/14 in Drosophila melanogaster. Probiotics Antimicrob Proteins 2016; 6:59-67. [PMID: 24676768 DOI: 10.1007/s12602-013-9154-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Lactic acid bacteria are known to produce antimicrobial peptides (AMPs) such as bacteriocins which can be employed to control pathogens and food spoilage microorganisms. However, their possible role as toxic agents against a eukaryotic system still remains unexplored. The present study deals with the in vivo evaluation of acute toxic effect of AMPs LR14, a mixture of AMPs isolated from Lactobacillus plantarum LR/14 on Drosophila melanogaster. The fly was used as a model system to measure the extent of toxicity of these peptides. The results showed that concentrations below 10 mg/ml are not significantly effective. When exposed to 10 mg/ml of AMPs LR14, acute toxic effect and a significant delay in the developmental cycle of the fly could be observed. Also, the weight and size of the flies were significantly reduced upon ingestion of these peptides. Higher concentrations (beyond 15 mg/ml) exerted a strong larvicidal effect. Detailed analysis on larval tissues and adult germ cells of the insect revealed deformity in cellular architecture, DNA fragmentation, and premature apoptosis, confirming that the peptides have a dose-dependent toxic property. Our studies provide the first information on the role of AMPs LR14 as an insecticidal agent.
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Machado NM, de Rezende AAA, Nepomuceno JC, Tavares DC, Cunha WR, Spanó MA. Evaluation of mutagenic, recombinogenic and carcinogenic potential of (+)-usnic acid in somatic cells of Drosophila melanogaster. Food Chem Toxicol 2016; 96:226-33. [PMID: 27497765 DOI: 10.1016/j.fct.2016.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 12/21/2022]
Abstract
The main of this study was to evaluate the mutagenic and carcinogenic potential of (+) - usnic acid (UA), using Somatic Mutation and Recombination Test (SMART) and the test for detecting epithelial tumor clones (wts) in Drosophila melanogaster. Larvae from 72 ± 4 h from Drosophila were fed with UA (5.0, 10.0 or 20.0 mM); urethane (10.0 mM) (positive control); and solvent (Milli-Q water, 1% Tween-80 and 3% ethanol) (negative control). ST cross produced increase in total mutant spots in the individuals treated with 5.0, 10.0 or 20.0 mM of UA. HB cross produced spot frequencies in the concentration of 5.0 mM that were higher than the frequency for the same concentration in the ST cross. In the highest concentrations the result was negative, which means that the difference observed can be attributed, in part, to the high levels of P450, suggesting that increasing the metabolic capacity maximized the toxic effect of these doses. In the evaluation of carcinogenesis using the wts test, the results obtained for the same concentrations of UA show a positive result for the presence of tumors when compared to the negative control. We conclude that UA has recombinogenic, mutagenic and carcinogenic effects on somatic cells in D. melanogaster.
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Affiliation(s)
- Nayane Moreira Machado
- Universidade Federal de Uberlândia, Instituto de Genética e Bioquímica, Campus Umuarama, Uberlândia, Minas Gerais, Brazil
| | | | - Júlio César Nepomuceno
- Universidade Federal de Uberlândia, Instituto de Genética e Bioquímica, Campus Umuarama, Uberlândia, Minas Gerais, Brazil; Centro Universitário de Patos de Minas, Laboratório de Citogenética e Mutagênese, Patos de Minas, Minas Gerais, Brazil
| | | | | | - Mário Antônio Spanó
- Universidade Federal de Uberlândia, Instituto de Genética e Bioquímica, Campus Umuarama, Uberlândia, Minas Gerais, Brazil.
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Aciole EHP, Guimarães NN, Silva AS, Amorim EM, Nunomura SM, Garcia ACL, Cunha KS, Rohde C. Genetic toxicity of dillapiol and spinosad larvicides in somatic cells of Drosophila melanogaster. PEST MANAGEMENT SCIENCE 2014; 70:559-565. [PMID: 23650150 DOI: 10.1002/ps.3573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 04/24/2013] [Accepted: 05/06/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Higher rates of diseases transmitted from insects to humans led to the increased use of organophosphate insecticides, proven to be harmful to human health and the environment. New, more effective chemical formulations with minimum genetic toxicity effects have become the object of intense research. These formulations include larvicides derived from plant extracts such as dillapiol, a phenylpropanoid extracted from Piper aduncum, and from microorganisms such as spinosad, formed by spinosyns A and D derived from the Saccharopolyspora spinosa fermentation process. This study investigated the genotoxicity of dillapiol and spinosad, characterising and quantifying mutation events and chromosomal and/or mitotic recombination using the somatic mutation and recombination test (SMART) in wings of Drosophila melanogaster. RESULTS Standard cross larvae (72 days old) were treated with different dillapiol and spinosad concentrations. Both compounds presented positive genetic toxicity, mainly as mitotic recombination events. Distilled water and doxorubicin were used as negative and positive controls respectively. CONCLUSION Spinosad was 14 times more genotoxic than dillapiol, and the effect was found to be purely recombinogenic. However, more studies on the potential risks of insecticides such as spinosad and dillapiol are necessary, based on other experimental models and methodologies, to ensure safe use.
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Affiliation(s)
- Eliezer H Pires Aciole
- Programa de Pós-Graduação em Saúde Humana e Meio Ambiente (PPGSHMA), Universidade Federal de Pernambuco (UFPE), Centro Acadêmico de Vitória, Rua do Alto do Reservatório s/n, Bairro Bela Vista, CEP 55608-680, Vitória de Santo Antão, PE, Brasil
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