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Tellis MB, Mohite SD, Nair VS, Chaudhari BY, Ahmed S, Kotkar HM, Joshi RS. Inhibition of Trehalose Synthesis in Lepidoptera Reduces Larval Fitness. Adv Biol (Weinh) 2024; 8:e2300404. [PMID: 37968550 DOI: 10.1002/adbi.202300404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/01/2023] [Indexed: 11/17/2023]
Abstract
Trehalose is synthesized in insects through the trehalose 6-phosphate synthase and phosphatase (TPS/TPP) pathway. TPP dephosphorylates trehalose 6-phosphate to release trehalose. Trehalose is involved in metamorphosis, but its relation with body weight, size, and developmental timing is unexplored. The expression and activity of TPS/TPP fluctuate depending on trehalose demand. Thus, TPS/TPP inhibition can highlight the significance of trehalose in insect physiology. TPS/TPP transcript levels are elevated in the pre-pupal and pupal stages in Helicoverpa armigera. The inhibition of recombinantly expressed TPP by N-(phenylthio)phthalimide (NPP), is validated by in vitro assays. In vivo inhibition of trehalose synthesis reduces larval weight and size, hampers metamorphosis, and reduces its overall fitness. Insufficient trehalose leads to a shift in glucose flux, reduced energy, and dysregulated fatty acid oxidation. Metabolomics reaffirms the depletion of trehalose, glucose, glucose 6-phosphate, and suppressed tricarboxylic acid cycle. Reduced trehalose hampers the energy level affecting larval vitality. Through trehalose synthesis inhibition, the importance of trehalose in insect physiology and development is investigated. Also, in two other lepidopterans, TPP inhibition impedes physiology and survival. NPP is also found to be effective as an insecticidal formulation. Overall, trehalose levels affect the larval size, weight, and metabolic homeostasis for larval-pupal transition in lepidoptera.
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Affiliation(s)
- Meenakshi B Tellis
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India
- Department of Botany, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra, 411007, India
| | - Sharada D Mohite
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Vineetkumar S Nair
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra, 411007, India
| | - Bhagyashri Y Chaudhari
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Shadab Ahmed
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra, 411007, India
| | - Hemlata M Kotkar
- Department of Botany, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra, 411007, India
| | - Rakesh S Joshi
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
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Khademi N, Rajabi S, Fararouei M, Rafiee A, Azhdarpoor A, Hoseini M. Environmental exposure to organophosphate pesticides and effects on cognitive functions in elementary school children in a Middle Eastern area. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:111076-111091. [PMID: 37798522 DOI: 10.1007/s11356-023-30080-z] [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: 07/22/2023] [Accepted: 09/21/2023] [Indexed: 10/07/2023]
Abstract
Although the fundamental reasons for cognitive function disorders have been well documented, little is known about the impact of environmental exposures, such as pesticides, on children's cognitive function development. This study investigated the effect of exposure to organophosphate pesticides on children's cognitive function. In order to determine various factors of exposure, hair samples were collected from 114 elementary school children who lived in Boyer-Ahmad County in the province of Kohgiluyeh and Boyer-Ahmad, Iran. A detailed questionnaire was utilized to gather demographic information and exposure profile. Pesticides were detected in hair samples using a gas chromatography-mass spectrometer (GC-MS); also, cognitive function was assessed using the trail-making test (TMT), which was divided into two parts: TMT-part A and TMT-part B. Participants in the study were 10.12 ± 1.440 years old on average. Children in rural areas had higher mean total pesticide concentrations (13.612 ± 22.01 ng/g) than those who lived in the urban areas (1.801 ± 1.32). The results revealed that boys (46.44 s and 92.37 s) completed the TMT-part A and part B tests in less time than girls (54.95 s and 109.82 s), respectively, and showed better performance (2.14) on the cognitive function exam than girls (2.07). Diazinon and TMT-part B were positively correlated (p < 0.05). With the increase in pesticides, there was no discernible difference in cognitive function. Pesticide use throughout a child's development may affect certain cognitive function indicators. In order to assess causal relationships, group studies and case studies are required because the current research was cross-sectional in nature.
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Affiliation(s)
- Nahid Khademi
- Department of Environmental Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeed Rajabi
- Department of Environmental Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Fararouei
- Department of Epidemiology, School of Public Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ata Rafiee
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Abooalfazl Azhdarpoor
- Research Center for Health Sciences, Institute of Health, Department of Environmental Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Hoseini
- Research Center for Health Sciences, Institute of Health, Department of Environmental Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran.
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Rane AS, Nair VS, Joshi RS, Giri AP. Domain Shuffling and Site-Saturation Mutagenesis for the Enhanced Inhibitory Potential of Amaranthaceae α-Amylase Inhibitors. Protein J 2023; 42:519-532. [PMID: 37598128 DOI: 10.1007/s10930-023-10148-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2023] [Indexed: 08/21/2023]
Abstract
Amaranthaceae α-amylase inhibitors (AAIs) are knottin-type proteins with selective inhibitory potential against coleopteran α-amylases. Their small size and remarkable stability make them exciting molecules for protein engineering to achieve superior selectivity and efficacy. In this report, we have designed a set of AAI pro- and mature peptides chimeras. Based on in silico analysis, stable AAI chimeras having a stronger affinity with target amylases were selected for characterization. In vitro studies validated that chimera of the propeptide from Chenopodium quinoa α-AI and mature peptide from Beta vulgaris α-AI possess 3, 7.6, and 4.26 fold higher inhibition potential than parental counterparts. Importantly, recombinant AAI chimera retained specificity towards target coleopteran α-amylases. In addition, to improve the inhibitory potential of AAI, we performed in silico site-saturation mutagenesis. Computational analysis followed by experimental data showed that substituting Asparagine at the 6th position with Methionine had a remarkable increase in the specific inhibition potential of Amaranthus hypochondriacus α-AI. These results provide structural-functional insights into the vitality of AAI propeptide and a potential hotspot for mutagenesis to enhance the AAI activity. Our investigation will be a toolkit for AAI's optimization and functional differentiation for future biotechnological applications.
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Affiliation(s)
- Ashwini S Rane
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Vineetkumar S Nair
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India
| | - Rakesh S Joshi
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
| | - Ashok P Giri
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
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Thanasoponkul W, Changbunjong T, Sukkurd R, Saiwichai T. Spent Coffee Grounds and Novaluron Are Toxic to Aedes aegypti (Diptera: Culicidae) Larvae. INSECTS 2023; 14:564. [PMID: 37367380 DOI: 10.3390/insects14060564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023]
Abstract
Aedes aegypti (Diptera: Culicidae) is a vector for mosquito-borne diseases worldwide. Insecticide resistance is a major concern in controlling this mosquito. We investigated the chemical compounds in wet and dry spent coffee grounds (wSCGs and dSCGs) and evaluated the efficacy of dSCGs, wSCGs, and novaluron on the mortality and adult emergence inhibition of Ae. aegypti. We found higher concentrations of chemical compounds in wSCGs than in dSCGs. The wSCGs and dSCGs both contained total phenolic compounds, total flavonoid compounds, caffeic acid, coumaric acid, protocatechuic acid, and vanillic acid. Complete mortality was observed after 48 h of exposure to 50 g/L wSCGs, while similar mortality was found after 120 h of exposure to 10 µg/L of novaluron. The sublethal dose was a concentration of wSCGs (5 g/L) and novaluron (0.01, 0.1, and 1 µg/L) combined that resulted in a larval mortality lower than twenty percent (at 72 h) to determine their synergistic effects. The death rate of larvae exposed in sublethal combination of wSCGs and novaluron was significantly higher than that of its stand-alone. The findings indicate that the combination of wSCGs and novaluron at sublethal concentrations had synergistic effects on the mortality of Ae. aegypti larvae and could be applied as an alternative control measure.
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Affiliation(s)
- Waralee Thanasoponkul
- Department of Parasitology and Entomology, Faculty of Public Health, Mahidol University, Bangkok 10400, Thailand
| | - Tanasak Changbunjong
- Department of Pre-Clinic and Applied Animal Science, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom 73170, Thailand
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals (MoZWE), Faculty of Veterinary Science, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Rattanavadee Sukkurd
- Department of Parasitology and Entomology, Faculty of Public Health, Mahidol University, Bangkok 10400, Thailand
| | - Tawee Saiwichai
- Department of Parasitology and Entomology, Faculty of Public Health, Mahidol University, Bangkok 10400, Thailand
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Casanova LM, Macrae A, de Souza JE, Neves Junior A, Vermelho AB. The Potential of Allelochemicals from Microalgae for Biopesticides. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091896. [PMID: 37176954 PMCID: PMC10181251 DOI: 10.3390/plants12091896] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
Improvements in agricultural productivity are required to meet the demand of a growing world population. Phytopathogens, weeds, and insects are challenges to agricultural production. The toxicity and widespread application of persistent synthetic pesticides poses a major threat to human and ecosystem health. Therefore, sustainable strategies to control pests are essential for agricultural systems to enhance productivity within a green paradigm. Allelochemicals are a less persistent, safer, and friendly alternative to efficient pest management, as they tend to be less toxic to non-target organisms and more easily degradable. Microalgae produce a great variety of allelopathic substances whose biocontrol potential against weeds, insects, and phytopathogenic fungi and bacteria has received much attention. This review provides up-to-date information and a critical perspective on allelochemicals from microalgae and their potential as biopesticides.
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Affiliation(s)
- Livia Marques Casanova
- Biotechnology Center-Bioinovar, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Andrew Macrae
- Sustainable Biotechnology and Microbial Bioinformatics Laboratory, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Jacqueline Elis de Souza
- Biotechnology Center-Bioinovar, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Athayde Neves Junior
- Biotechnology Center-Bioinovar, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Alane Beatriz Vermelho
- Biotechnology Center-Bioinovar, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
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Gomes EN, Patel H, Yuan B, Lyu W, Juliani HR, Wu Q, Simon JE. Successive harvests affect the aromatic and polyphenol profiles of novel catnip ( Nepeta cataria L.) cultivars in a genotype-dependent manner. FRONTIERS IN PLANT SCIENCE 2023; 14:1121582. [PMID: 36866384 PMCID: PMC9971627 DOI: 10.3389/fpls.2023.1121582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Catnip (Nepeta cataria L.) produces volatile iridoid terpenes, mainly nepetalactones, with strong repellent activity against species of arthropods with commercial and medical importance. Recently, new catnip cultivars CR3 and CR9 have been developed, both characterized by producing copious amounts of nepetalactones. Due to its perennial nature, multiple harvests can be obtained from this specialty crop and the effects of such practice on the phytochemical profile of the plants are not extensively studied. METHODS In this study we assessed the productivity of biomass, chemical composition of the essential oil and polyphenol accumulation of new catnip cultivars CR3 and CR9 and their hybrid, CR9×CR3, across four successive harvests. The essential oil was obtained by hydrodistillation and the chemical composition was obtained via gas chromatography-mass spectrometry (GC-MS). Individual polyphenols were quantified by Ultra-High-Performance Liquid Chromatography- diode-array detection (UHPLC-DAD). RESULTS Although the effects on biomass accumulation were independent of genotypes, the aromatic profile and the accumulation of polyphenols had a genotype-dependent response to successive harvests. While cultivar CR3 had its essential oil dominated by E,Z-nepetalactone in all four harvests, cultivar CR9 showed Z,E-nepetalactone as the main component of its aromatic profile during the 1st, 3rd and 4th harvests. At the second harvest, the essential oil of CR9 was mainly composed of caryophyllene oxide and (E)-β-caryophyllene. The same sesquiterpenes represented the majority of the essential oil of the hybrid CR9×CR3 at the 1st and 2nd successive harvests, while Z,E-nepetalactone was the main component at the 3rd and 4th harvests. For CR9 and CR9×CR3, rosmarinic acid and luteolin diglucuronide were at the highest contents at the 1st and 2nd harvest, while for CR3 the peak occurred at the 3rd successive harvest. DISCUSSION The results emphasize that agronomic practices can significantly affect the accumulation of specialized metabolites in N. cataria and the genotype-specific interactions may indicate differential ecological adaptations of each cultivar. This is the first report on the effects of successive harvest on these novel catnip genotypes and highlights their potential for the supply of natural products for the pest control and other industries.
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Affiliation(s)
- Erik Nunes Gomes
- New Use Agriculture and Natural Plant Products, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Federal Agency for Support and Evaluation of Graduate Education (CAPES), Ministry of Education of Brazil, Brasilia, DF, Brazil
| | - Harna Patel
- New Use Agriculture and Natural Plant Products, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
| | - Bo Yuan
- New Use Agriculture and Natural Plant Products, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
| | - Weiting Lyu
- New Use Agriculture and Natural Plant Products, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, United States
| | - H. Rodolfo Juliani
- New Use Agriculture and Natural Plant Products, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
| | - Qingli Wu
- New Use Agriculture and Natural Plant Products, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, United States
- Center for Agricultural Food Ecosystems, Institute of Food, Nutrition & Health, Rutgers University, New Brunswick, NJ, United States
| | - James E. Simon
- New Use Agriculture and Natural Plant Products, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, United States
- Center for Agricultural Food Ecosystems, Institute of Food, Nutrition & Health, Rutgers University, New Brunswick, NJ, United States
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Liu S, Zhou T, Chen D, Liu R, Qin HH, Min ZL, Liu GQ, Cao XL. In silico-determined compound from the root of Pueraria lobate alleviates synaptic plasticity injury induced by Alzheimer's disease via the p38MAPK-CREB signaling pathway. Food Funct 2021; 12:1039-1050. [PMID: 33433542 DOI: 10.1039/d0fo02388d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pueraria lobata is utilized as a food source in China. The aim of this study is to combine virtual screening and molecular dynamics predictive model to screen out the potential synaptic plasticity-maintaining components from the root of P. lobate and to verify it by employing the amyloid β-injected rats' model. Eighteen compounds were identified by HPLC-MS/MS; puerarin manifested the most potential to form a stable complex with calcium/calmodulin kinase IIα (CaMK IIα), which is the key protein in synaptic plasticity by the in silico study. The further in vivo assay showed that puerarin could elevate the synaptic thickness, density, and length, relieve calcium overload, regulate the expression of CaMK IIα, and other p38MAPK-CREB signaling pathway-related biochemical criteria. The behavioral test also verified the results. Results have confirmed that the root of P. lobate can work anti-AD by maintaining the synaptic plasticity and proved the reliability of using the in silico predictive model to determine active ingredients from the natural product.
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Affiliation(s)
- Song Liu
- Department of Pharmacy, School of Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, 430080, PR China. and New Drugs Innovation and Development institute, School of Medicine, Wuhan University of Science and Technology, Wuhan, 430080, PR China
| | - Tong Zhou
- Department of Pharmacy, School of Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, 430080, PR China. and New Drugs Innovation and Development institute, School of Medicine, Wuhan University of Science and Technology, Wuhan, 430080, PR China
| | - Dan Chen
- Wuhan Institute for Food and Cosmetic Control, Wuhan, 430012, PR China
| | - Rong Liu
- Department of Orthopaedic Surgery, Puren Hospital of Wuhan, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - Huan-Huan Qin
- Department of Pharmacy, School of Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, 430080, PR China. and New Drugs Innovation and Development institute, School of Medicine, Wuhan University of Science and Technology, Wuhan, 430080, PR China
| | - Zhen-Li Min
- Department of Pharmacy, School of Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, 430080, PR China. and New Drugs Innovation and Development institute, School of Medicine, Wuhan University of Science and Technology, Wuhan, 430080, PR China
| | - Guang-Qi Liu
- Department of Pharmacy, School of Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, 430080, PR China. and New Drugs Innovation and Development institute, School of Medicine, Wuhan University of Science and Technology, Wuhan, 430080, PR China
| | - Xiao-Lu Cao
- Department of Pharmacy, School of Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, 430080, PR China.
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Liu J, Fernandez D, Gao Y, Silvie P, Gao Y, Dai G. Enzymology, Histological and Ultrastructural Effects of Ar-Turmerone on Culex pipiens pallens Larvae. INSECTS 2020; 11:insects11060336. [PMID: 32486189 PMCID: PMC7349101 DOI: 10.3390/insects11060336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/22/2020] [Accepted: 05/27/2020] [Indexed: 01/03/2023]
Abstract
Our previous article demonstrated that ar-turmerone ((6S)-2-methyl-6-(4-methylphenyl)-2-hepten-4-one) extracted from Curcuma longa L. has a significant larvicidal activity against the fourth instar larvae of Culex pipiens pallens. To reveal the effects of ar-turmerone on C. pipiens pallens larvae, light microscopy and transmission electron microscopy were used to observe the histological and ultrastructure changes in muscle and digestive tissues of fourth instar larvae. It was also revealed by detecting the activity of the acetylcholinesterase (AChE) enzyme and three detoxifying enzymes, including carboxylesterase (CarE), glutathione-S-transferase (GST) and Cytochrome P450 monooxidases (P450). The observation under the light microscope showed that the larvae displayed a disruption of myofibril in ventral muscle cells, the disappearance of nucleolus in the malpighian tubule cells, and the exfoliation of the brush border in midgut epithelial cells, 24 h after treatment. The observation under the transmission electron microscope displayed disorganized Z-lines in the ventral muscle cells, and dissolved membrane of mitochondria, nuclear and endoplasmic reticulum in abdominal cells. The enzymatic activity results showed that ar-turmerone significantly increased the level of detoxifying enzymes, while the activity of AChE was not obviously affected. All the results suggest that the larvicidal mechanism of ar-turmerone is estimated to be stomach poison and the active sites might be the muscle and digestive tissues, and the mode of action of ar-turmerone may be unrelated to AChE.
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Affiliation(s)
- Jia Liu
- Laboratory of Plant Health and Natural Products, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (J.L.); (Y.G.)
| | - Diana Fernandez
- IRD, Cirad, University of Montpellier, IPME, 911, Avenue Agropolis, CEDEX 5, 34394 Montpellier, France;
| | - Yanjin Gao
- Laboratory of Plant Health and Natural Products, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (J.L.); (Y.G.)
| | - Pierre Silvie
- IRD, UMR IPME, 34AA001 Montpellier, France;
- AIDA, University of Montpellier, CIRAD, CEDEX, BP 34398 Montpellier, France
| | - Yongdong Gao
- Shanghai Agriculture Extension and Service Center, Shanghai 201103, China;
| | - Guanghui Dai
- Laboratory of Plant Health and Natural Products, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (J.L.); (Y.G.)
- Correspondence:
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Functional characterization of Helicoverpa armigera trehalase and investigation of physiological effects caused due to its inhibition by Validamycin A formulation. Int J Biol Macromol 2018; 112:638-647. [DOI: 10.1016/j.ijbiomac.2018.01.221] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 01/23/2018] [Accepted: 01/26/2018] [Indexed: 11/20/2022]
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10
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Nakhaie Bahrami M, Mikani A, Moharramipour S. Effect of caffeic acid on feeding, α-amylase and protease activities and allatostatin-A content of Egyptian cotton leafworm, Spodoptera littoralis (Lepidoptera: Noctuidae). JOURNAL OF PESTICIDE SCIENCE 2018; 43:73-78. [PMID: 30363153 PMCID: PMC6140692 DOI: 10.1584/jpestics.d17-086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 01/08/2018] [Indexed: 06/08/2023]
Abstract
Efficiency of caffeic acid (CA) on Spodoptera littoralis was investigated. CA was mixed with artificial diet, and feeding indices and allatostatin-A (AST-A) content of the midgut were measured 10 days later. α-Amylase and protease activities were evaluated for 10 days. CA significantly decreased feeding indices. Feeding on an artificial diet containing CA decreased protease and α-amylase activities in the midgut. The incubation of the dissected midgut with AST-A increased α-amylase and protease activities. The injection of AST-A into the hemolymph of larvae also increased protease and α-amylase activities. Competitive ELISA and immunohistochemistry results showed that starvation decreased the AST-A titer and AST-A immunoreactivity (AST-A-ir) cells in the midgut whereas refeeding increased it. Here, for the first time we showed that feeding on an artificial diet containing CA also caused the AST-A level to decrease in the midgut, which itself caused α-amylase and protease activities to decrease.
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Affiliation(s)
| | - Azam Mikani
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University
| | - Saied Moharramipour
- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University
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Agnihotri AR, Hulagabali CV, Adhav AS, Joshi RS. Mechanistic insight in potential dual role of sinigrin against Helicoverpa armigera. PHYTOCHEMISTRY 2018; 145:121-127. [PMID: 29126020 DOI: 10.1016/j.phytochem.2017.10.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 10/26/2017] [Accepted: 10/30/2017] [Indexed: 06/07/2023]
Abstract
The adverse effect of glucosinolates on diverse phytophagous insects is well documented, but its impact on insect physiology has remained enigmatic. Here we report insights into detrimental effects of plant glucosinolate molecule, sinigrin, on Helicoverpa armigera growth and development. In-silico screening of multiple glucosinolates predicted sinigrin as one of the potential inhibitor of H. armigera cathepsin B and L. Insects fed on sinigrin containing diet showed significantly reduced growth (20-30%), delayed pupation (10-15%), decreased fecundity (50-80%) and developmental abnormalities. Further, sinigrin showed 50-60% inhibition of ex-vivo cathepsin like activity which might be a reason for growth and development related abnormalities. In-vitro and mass spectrometry studies highlighted the cytotoxicity caused due to the hydrolysis of sinigrin, into toxic isothiocyanates, in presence of H. armigera whole body extract. In conclusion, insect cathepsin inhibition and isothiocyanate mediated cytotoxicity lead to the dual adverse effect of sinigrin on H. armigera.
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Affiliation(s)
- Aniruddha R Agnihotri
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune, 411 007, Maharashtra, India
| | - Chaitanya V Hulagabali
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune, 411 007, Maharashtra, India
| | - Anmol S Adhav
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune, 411 007, Maharashtra, India
| | - Rakesh S Joshi
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune, 411 007, Maharashtra, India.
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Ma S, Liu L, Dou M, Ma Z, Zhang X. Comparative studies on muscle microstructure and ultrastructure of Mythimna separata Walker treated with wilforgine and chlorantraniliprole. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:1023-1034. [PMID: 29976005 DOI: 10.1016/j.ecoenv.2017.09.067] [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: 07/14/2017] [Revised: 09/18/2017] [Accepted: 09/26/2017] [Indexed: 06/08/2023]
Abstract
We attempted to elucidate the comparative effects between wilforgine and chlorantraniliprole on the microstructure/ultrastructure of muscle tissue in Mythimna separate larvae. The typical toxicity symptoms of M. separata larvae upon wilforgine treatment was feeding cessation and flaccid paralysis, whereas feeding cessation and contraction paralysis were the main poisoning symptoms wrought by chlorantraniliprole. Light-microscopy observations showed that the microstructure of muscle tissue could be damaged by wilforgine and chlorantraniliprole, and the death of insects was associated with muscle lesions. Muscle tissue was loose after wilforgine treatment but constricted muscle tissue was observed upon chlorantraniliprole treatment. Transmission electron microscopy showed that wilforgine and chlorantraniliprole could disrupt endomembranes and plasma membranes. These results suggest that wilforgine can induce microstructural and ultrastructural changes in the muscles of M. separata larvae; the sites of action are proposed to be calcium receptors or channels in the muscular system.
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Affiliation(s)
- Shujie Ma
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, China
| | - Lin Liu
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, China
| | - Minxiang Dou
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, China
| | - Zhiqing Ma
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, China; Research Center of Biopesticide Technology and Engineering, Yangling, Shaanxi Province 712100, China.
| | - Xing Zhang
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, China; Research Center of Biopesticide Technology and Engineering, Yangling, Shaanxi Province 712100, China
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13
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Ma S, Liu L, Ma Z, Zhang X. Microstructural and ultrastructural changes in the muscle cells of the oriental armyworm Mythimna separata Walker (Lepidoptera: Noctuidae) on treatment with wilforine. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 139:60-67. [PMID: 28595923 DOI: 10.1016/j.pestbp.2017.05.001] [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: 01/13/2017] [Revised: 04/26/2017] [Accepted: 05/01/2017] [Indexed: 06/07/2023]
Abstract
This study investigated the mode of action of wilforine, an alkaloid with insecticidal properties, extracted from Tripterygium wilfordii Hook f., on the microstructure and ultrastructure of the muscle cells of larvae and adults of the oriental armyworm Mythimna separata Walker. The bioassay results showed that wilforine had oral toxicity against both M. separata larvae (LC50=63μg/mL) and adults (LC50=36μg/mL). The typical toxicity sign was paralysis leading to death. Both light and electron microscope observations revealed that damage to the muscle cells increased with poisoning time in larvae and adults treated with the LC80 dose of wilforine. Histopathological examinations in the muscle cells of M. separata adults showed that there were large cytoplasmic spaces, disrupted Z-lines and swollen mitochondria in the muscle cells. Further, the sarcoplasmic reticulum was excessively dilated and fragmented; the nuclear membrane was ruptured; nuclear material was overflowing; and the myolemma was damaged. The similar pathological changes in the muscle cells of oriental armyworm larvae were observed, as above. In addition, a medullary sheath structure appeared and crystalline inclusion was also observed in the muscle cells of M. separata larvae. In conclusion, wilforine could induce pathological changes in the muscle cells of oriental armyworm larvae and adults, leading to their death; thus, the active site of action of wilforine maybe located in the muscle tissue of insects.
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Affiliation(s)
- Shujie Ma
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, PR China
| | - Lin Liu
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, PR China
| | - Zhiqing Ma
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, PR China.
| | - Xing Zhang
- Research & Development Center of Biorational Pesticide, Northwest A & F University, Yangling 712100, PR China
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14
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Fraga BM, González-Coloma A, Alegre-Gómez S, López-Rodríguez M, Amador LJ, Díaz CE. Bioactive constituents from transformed root cultures of Nepeta teydea. PHYTOCHEMISTRY 2017; 133:59-68. [PMID: 28340896 DOI: 10.1016/j.phytochem.2016.10.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 10/10/2016] [Accepted: 10/12/2016] [Indexed: 06/06/2023]
Abstract
A phytochemical study of an extract from transformed root cultures of Nepeta teydea, induced by Agrobacterium rhizogenes, led to the isolation of the following new compounds: the sesquiterpene (-)-cinalbicol, the diterpene teydeadione (6,11,14-trihydroxy-12-methoxy-abieta-5,8,11,13,15-penten-7-one), a degraded C23-triterpene (teydealdehyde) and three fatty acid esters of lanosta-7,24-dien-3β-ol. The propyl ester of rosmarinic acid was also isolated for the first time from a natural source. In addition, two dehydroabietane diterpenes, eight triterpenes and eighteen known phenolic compounds were obtained. The antifeedant, cytotoxic and phytotoxic activities of the isolated compounds have also been investigated.
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, Avda. Astrofísico F. Sánchez 3, 38206, La Laguna, Tenerife, Canary Islands, Spain.
| | | | | | - Matías López-Rodríguez
- Instituto Universitario de Bioorgánica "Antonio González", Universidad de La Laguna, Tenerife, Spain
| | - Leonardo J Amador
- Instituto de Productos Naturales y Agrobiología, CSIC, Avda. Astrofísico F. Sánchez 3, 38206, La Laguna, Tenerife, Canary Islands, Spain
| | - Carmen E Díaz
- Instituto de Productos Naturales y Agrobiología, CSIC, Avda. Astrofísico F. Sánchez 3, 38206, La Laguna, Tenerife, Canary Islands, Spain
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Khandelwal N, Barbole RS, Banerjee SS, Chate GP, Biradar AV, Khandare JJ, Giri AP. Budding trends in integrated pest management using advanced micro- and nano-materials: Challenges and perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 184:157-169. [PMID: 27697374 DOI: 10.1016/j.jenvman.2016.09.071] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/15/2016] [Accepted: 09/21/2016] [Indexed: 06/06/2023]
Abstract
One of the most vital supports to sustain human life on the planet earth is the agriculture system that has been constantly challenged in terms of yield. Crop losses due to insect pest attack even after excessive use of chemical pesticides, are major concerns for humanity and environment protection. By the virtue of unique properties possessed by micro and nano-structures, their implementation in Agri-biotechnology is largely anticipated. Hence, traditional pest management strategies are now forestalling the potential of micro and nanotechnology as an effective and viable approach to alleviate problems pertaining to pest control. These technological innovations hold promise to contribute enhanced productivity by providing novel agrochemical agents and delivery systems. Application of these systems engages to achieve: i) control release of agrochemicals, ii) site-targeted delivery of active ingredients to manage specific pests, iii) reduced pesticide use, iv) detection of chemical residues, v) pesticide degradation, vi) nucleic acid delivery and vii) to mitigate post-harvest damage. Applications of micro and nano-technology are still marginal owing to the perception of low economic returns, stringent regulatory issues involving safety assessment and public awareness over their uses. In this review, we highlight the potential application of micro and nano-materials with a major focus on effective pest management strategies including safe handling of pesticides.
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Affiliation(s)
- Neha Khandelwal
- Plant Molecular Biology, Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India
| | - Ranjit S Barbole
- Plant Molecular Biology, Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India
| | - Shashwat S Banerjee
- Maharashtra Institute of Medical Education and Research (MIMER) Medical College, Talegaon Dabhade, Dist Pune 410507, India
| | - Govind P Chate
- Maharashtra Institute of Medical Education and Research (MIMER) Medical College, Talegaon Dabhade, Dist Pune 410507, India
| | - Ankush V Biradar
- Inorganic Material and Catalysis Division, CSIR-Central Salt and Marine Chemical Research Institute, Bhavnagar 364002, Gujarat, India
| | - Jayant J Khandare
- Maharashtra Institute of Medical Education and Research (MIMER) Medical College, Talegaon Dabhade, Dist Pune 410507, India; Maharashtra Institute of Pharmacy, MIT Campus, Pune 411038, Maharashtra, India.
| | - Ashok P Giri
- Plant Molecular Biology, Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India.
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