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Giatropoulos A, Koliopoulos G, Pantelakis PN, Papachristos D, Michaelakis A. Evaluating the Sublethal Effects of Origanum vulgare Essential Oil and Carvacrol on the Biological Characteristics of Culex pipiens biotype molestus (Diptera: Culicidae). INSECTS 2023; 14:400. [PMID: 37103215 PMCID: PMC10146918 DOI: 10.3390/insects14040400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/15/2023] [Accepted: 04/17/2023] [Indexed: 06/19/2023]
Abstract
Culex pipiens is a mosquito species complex spread worldwide that poses a serious threat to human health as the primary vector of West Nile virus. Its control is mainly based on larvicidal applications with synthetic insecticides on mosquito breeding sites. However, the excessive use of synthetic larvicides may provoke mosquito resistance issues and negative side effects to the aquatic environment and human health. Plant-derived essential oils, including those from the Lamiaceae family, can be eco-friendly alternative larvicidal agents causing acute larval toxicity and/or growth inhibitory effects on the developmental stages of mosquitoes through different modes of action. In the current laboratory study, we evaluated the sublethal effects of carvacrol-rich oregano essential oil and pure carvacrol on Cx. pipiens biotype molestus, the autogenous member of the Cx. pipiens species complex, after the exposure of 3rd-4th instar larvae to LC50 concentrations. The short-term (24 h) larvicidal treatment with the sublethal concentrations of both tested materials exhibited an acute lethal effect on the exposed larvae as well as significant delayed mortality for surviving larvae and pupae. Larvicidal treatment with carvacrol reduced the longevity of the emerged males. In addition, the morphological abnormalities that were observed at the larval and pupal stage along with failed adult emergence indicate the potential growth inhibitory properties of the tested bioinsecticides. Our findings suggest that carvacrol and carvacrol-rich oregano oil are effective plant-based larvicides at doses lower than the acute lethal ones, thus promoting an environmentally friendly and more affordable perspective for their use against the WNV vector Cx. pipiens biotype molestus.
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Affiliation(s)
- Athanasios Giatropoulos
- Laboratory of Efficacy Control of Pesticides, Benaki Phytopathological Institute, 14561 Kifissia, Greece
| | - George Koliopoulos
- Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, 11855 Athens, Greece
| | - Pavlos-Nektarios Pantelakis
- Laboratory of Efficacy Control of Pesticides, Benaki Phytopathological Institute, 14561 Kifissia, Greece
- Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, 11855 Athens, Greece
| | - Dimitrios Papachristos
- Laboratory of Agricultural Entomology, Benaki Phytopathological Institute, 14561 Kifissia, Greece
| | - Antonios Michaelakis
- Laboratory of Insects and Parasites of Medical Importance, Benaki Phytopathological Institute, 14561 Kifissia, Greece
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Giatropoulos A, Karamaouna F, Ampatzi A, Papachristos D, Michaelakis A. Sublethal effects of oregano essential oil and its major compound carvacrol on biological parameters of Aedes albopictus (Diptera: Culicidae). Exp Parasitol 2022; 242:108392. [PMID: 36191614 DOI: 10.1016/j.exppara.2022.108392] [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] [Received: 06/07/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 11/18/2022]
Abstract
Mosquito management programs rely basically on the use of conventional synthetic larvicides. However, frequent applications and misuse of some synthetic insecticides have led to problems related to mosquito resistance development, harmful effects on human health and unacceptable environmental effects on non-target organisms. Recently, a growing number of phytochemicals has been tested as more eco-friendly larvicides against various mosquito species, exerting high efficacy with multiple modes of action. In the laboratory, we investigated for the first time the sublethal effects of oregano oil and its major compound carvacrol, against Aedes albopictus (Asian tiger mosquito), a mosquito of great medical importance. We determined the effects of short term (24h) exposure of 3rd- 4th larvae to LC50 concentrations on survival and development of survived larvae until adulthood, as well as on fecundity, fertility, longevity and wing length of emerged adults. Only half of 24h survived larvae from oregano oil and carvacrol treatment finally reached adulthood. Abnormal shapes of dead larvae and pupae, and failed adult emergence were also observed, indicating a potential growth inhibitory activity of the tested materials. No particular effects from exposure to larvicidal LC50 concentrations were recorded on life cycle parameters of successfully emerged adults. These findings suggest the tested oregano oil and carvacrol as sufficiently effective larvicides against Ae. albopictus at lower than the acutely toxic concentrations, promoting a more eco-friendly and less costly profile for these biopesticides.
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Affiliation(s)
- Athanasios Giatropoulos
- Laboratory of Efficacy Control of Pesticides, Benaki Phytopathological Institute, 14561, Kifissia, Greece.
| | - Filitsa Karamaouna
- Laboratory of Efficacy Control of Pesticides, Benaki Phytopathological Institute, 14561, Kifissia, Greece
| | - Argyro Ampatzi
- Laboratory of Efficacy Control of Pesticides, Benaki Phytopathological Institute, 14561, Kifissia, Greece
| | - Dimitrios Papachristos
- Laboratory of Agricultural Entomology, Benaki Phytopathological Institute, 14561, Kifissia, Greece
| | - Antonios Michaelakis
- Laboratory of Insects and Parasites of Medical Importance, Benaki Phytopathological Institute, 14561, Kifissia, Greece
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Fimbristylis ovata and Artemisia vulgaris extracts inhibited AGE-mediated RAGE expression, ROS generation, and inflammation in THP-1 cells. Toxicol Res 2022; 38:331-343. [DOI: 10.1007/s43188-021-00114-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 08/15/2021] [Accepted: 11/15/2021] [Indexed: 10/19/2022] Open
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Shi B, Osunkoya OO, Chadha A, Florentine SK, Dhileepan K. Biology, Ecology and Management of the Invasive Navua Sedge ( Cyperus aromaticus)-A Global Review. PLANTS 2021; 10:plants10091851. [PMID: 34579384 PMCID: PMC8465260 DOI: 10.3390/plants10091851] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 11/17/2022]
Abstract
Navua sedge (Cyperus aromaticus (Ridley) Mattf. & Kukenth) is an invasive perennial sedge, native to tropical Africa, which is threatening many natural ecosystems and agroecosystems, especially in northern Queensland, Australia. Crop and pasture production have been impacted by Navua sedge and it is also directly causing reductions in dairy and beef production in affected regions. This review documents the biology, ecology and potential management options to minimise the spread and impact of Navua sedge. The weed reproduces both sexually (seeds) and vegetatively (via underground rhizomes). Its tiny seeds can be spread easily via wind, water, vehicles, farm machinery and animals, whilst the rhizomes assist with establishment of dense stands. The CLIMEX model (which uses distribution and climate data in native and novel ranges) indicates that in Australia, Navua sedge has the potential to spread further within Queensland and into the Northern Territory, New South Wales and Victoria. Several management strategies, including mechanical, chemical and agronomic methods, and their integration will have to be used to minimise agricultural production losses caused by Navua sedge, but most of these methods are currently either ineffective or uneconomical when used alone. Other management approaches, including biological control and mycoherbicides, are currently being explored. We conclude that a better understanding of the interaction of its physiological processes, ecological patterns and genetic diversity across a range of conditions found in the invaded and native habitats will help to contribute to and provide more effective integrated management approaches for Navua sedge.
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Affiliation(s)
- Boyang Shi
- Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, Boggo Road, Dutton Park, QLD 4102, Australia; (O.O.O.); (K.D.)
- Correspondence:
| | - Olusegun O. Osunkoya
- Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, Boggo Road, Dutton Park, QLD 4102, Australia; (O.O.O.); (K.D.)
| | - Aakansha Chadha
- Future Regions Research Centre, School of Science, Psychology and Sport, Federation University Australia, Mount Helen, VIC 3350, Australia; (A.C.); (S.K.F.)
| | - Singarayer K. Florentine
- Future Regions Research Centre, School of Science, Psychology and Sport, Federation University Australia, Mount Helen, VIC 3350, Australia; (A.C.); (S.K.F.)
| | - Kunjithapatham Dhileepan
- Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, Boggo Road, Dutton Park, QLD 4102, Australia; (O.O.O.); (K.D.)
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Satyaveanthan MV, Suhaimi SA, Ng CL, Muhd-Noor ND, Awang A, Lam KW, Hassan M. Purification, biochemical characterisation and bioinformatic analysis of recombinant farnesol dehydrogenase from Theobroma cacao. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 161:143-155. [PMID: 33588320 DOI: 10.1016/j.plaphy.2021.01.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 01/30/2021] [Indexed: 06/12/2023]
Abstract
The juvenile hormones (JH) in plants are suggested to act as a form of plant defensive strategy especially against insect herbivory. The oxidation of farnesol to farnesoic acid is a key step in the juvenile hormone biosynthesis pathway. We herein present the purification and characterisation of the recombinant Theobroma cacao farnesol dehydrogenase enzyme that catalyses oxidation of farnesol to farnesal. The recombinant enzyme was purified to apparent homogeneity by affinity chromatography. The purified enzyme was characterised in terms of its deduced amino acid sequences, phylogeny, substrate specificity, kinetic parameters, structural modeling, and docking simulation. The phylogenetic analysis indicated that the T. cacao farnesol dehydrogenase (TcFolDH) showed a close relationship with A. thaliana farnesol dehydrogenase gene. The TcFolDH monomer had a large N-terminal domain which adopted a typical Rossmann-fold, harboring the GxxGxG motif (NADP(H)-binding domain) and a small C-terminal domain. The enzyme was a homotrimer comprised of subunits with molecular masses of 36 kDa. The TcFolDH was highly specific to NADP+ as coenzyme. The substrate specificity studies showed trans, trans-farnesol was the most preferred substrate for the TcFolDH, suggesting that the purified enzyme was a NADP+-dependent farnesol dehydrogenase. The docking of trans, trans-farnesol and NADP+ into the active site of the enzyme showed the important residues, and their interactions involved in the substrate and coenzyme binding of TcFolDH. Considering the extensive involvement of JH in both insects and plants, an in-depth knowledge on the recombinant production of intermediate enzymes of the JH biosynthesis pathway could help provide a potential method for insect control.
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Affiliation(s)
| | - Saidi-Adha Suhaimi
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Bangi, Selangor, 43600, Malaysia
| | - Chyan Leong Ng
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Bangi, Selangor, 43600, Malaysia
| | - Noor-Dina Muhd-Noor
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Bangi, Selangor, 43600, Malaysia; Enzyme & Microbial Technology Center (EMTech), Faculty of Biotechnology & Biomolecular Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, 43400, Malaysia
| | - Alias Awang
- Cocoa Research & Development Centre (Bagan Datuk), Malaysian Cocoa Board, P.O. Box 30, Sg. Dulang Road, Sg. Sumun, Perak, 36307, Malaysia
| | - Kok Wai Lam
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur, 50300, Malaysia
| | - Maizom Hassan
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Bangi, Selangor, 43600, Malaysia.
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Franco Marcelino PR, da Silva VL, Rodrigues Philippini R, Von Zuben CJ, Contiero J, dos Santos JC, da Silva SS. Biosurfactants produced by Scheffersomyces stipitis cultured in sugarcane bagasse hydrolysate as new green larvicides for the control of Aedes aegypti, a vector of neglected tropical diseases. PLoS One 2017; 12:e0187125. [PMID: 29125845 PMCID: PMC5695273 DOI: 10.1371/journal.pone.0187125] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 10/13/2017] [Indexed: 01/16/2023] Open
Abstract
Biosurfactants are microbial metabolites with possible applications in various industrial sectors that are considered ecofriendly molecules. In recent years, some studies identified these compounds as alternatives for the elimination of vectors of tropical diseases, such as Aedes aegypti. The major bottlenecks of biosurfactant industrial production have been the use of conventional raw materials that increase production costs as well as opportunistic or pathogenic bacteria, which restrict the application of these biomolecules. The present study shows the potential of hemicellulosic sugarcane bagasse hydrolysate as a raw material for the production of a crystalline glycolipidic BS by Scheffersomyces stipitis NRRL Y-7124, which resulted in an emulsifying index (EI24) of 70 ± 3.4% and a superficial tension of 52 ± 2.9 mN.m-1. Additionally, a possible new application of these compounds as biolarvicides, mainly against A. aegypti, was evaluated. At a concentration of 800 mg.L-1, the produced biosurfactant caused destruction to the larval exoskeletons 12 h after application and presented an letal concentration (LC50) of 660 mg.L-1. Thus, a new alternative for biosurfactant production using vegetal biomass as raw material within the concept of biorefineries was proposed, and the potential of the crystalline glycolipidic biosurfactant in larvicidal formulations against neglected tropical disease vectors was demonstrated.
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Affiliation(s)
| | - Vinícius Luiz da Silva
- Department of Biochemistry and Microbiology, Biosciences Institute, São Paulo State University (Campus Rio Claro), Rio Claro, Brazil
| | | | - Cláudio José Von Zuben
- Department of Zoology, Biosciences Institute, São Paulo State University (Campus Rio Claro), Rio Claro, Brazil
| | - Jonas Contiero
- Department of Biochemistry and Microbiology, Biosciences Institute, São Paulo State University (Campus Rio Claro), Rio Claro, Brazil
| | - Júlio César dos Santos
- Department of Biotechnology, Engineering School of Lorena, São Paulo University, Lorena, Brazil
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Dieng H, Ellias SB, Satho T, Ahmad AH, Abang F, Ghani IA, Noor S, Ahmad H, Zuharah WF, Morales Vargas RE, Morales NP, Hipolito CN, Attrapadung S, Noweg GT. Coffee, its roasted form, and their residues cause birth failure and shorten lifespan in dengue vectors. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:14782-14794. [PMID: 28470499 DOI: 10.1007/s11356-017-8711-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 02/28/2017] [Indexed: 06/07/2023]
Abstract
In dengue mosquitoes, successful embryonic development and long lifespan are key determinants for the persistence of both virus and vector. Therefore, targeting the egg stage and vector lifespan would be expected to have greater impacts than larvicides or adulticides, both strategies that have lost effectiveness due to the development of resistance. Therefore, there is now a pressing need to find novel chemical means of vector control. Coffee contains many chemicals, and its waste, which has become a growing environmental concern, is as rich in toxicants as the green coffee beans; these chemicals do not have a history of resistance in insects, but some are lost in the roasting process. We examined whether exposure to coffee during embryonic development could alter larval eclosion and lifespan of dengue vectors. A series of bioassays with different coffee forms and their residues indicated that larval eclosion responses of Aedes albopictus and Ae. aegypti were appreciably lower when embryonic maturation occurred in environments containing coffee, especially roasted coffee crude extract (RCC). In addition, the lifespan of adults derived from eggs that hatched successfully in a coffee milieu was reduced, but this effect was less pronounced with roasted and green coffee extracts (RCU and GCU, respectively). Taken together, these findings suggested that coffee and its residues have embryocidal activities with impacts that are carried over onto the adult lifespan of dengue vectors. These effects may significantly reduce the vectorial capacity of these insects. Reutilizing coffee waste in vector control may also represent a realistic solution to the issues associated with its pollution.
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Affiliation(s)
- Hamady Dieng
- Institute of Biodiversity and Environmental Conservation (IBEC), Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia.
| | | | - Tomomitsu Satho
- Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
| | - Abu Hassan Ahmad
- School of Biological Sciences, Universiti Sains Malaysia, Penang, Malaysia
| | - Fatimah Abang
- Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia
| | - Idris Abd Ghani
- Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Sabina Noor
- Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia
| | - Hamdan Ahmad
- School of Biological Sciences, Universiti Sains Malaysia, Penang, Malaysia
| | - Wan Fatma Zuharah
- School of Biological Sciences, Universiti Sains Malaysia, Penang, Malaysia
| | | | | | - Cirilo N Hipolito
- Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia
| | | | - Gabriel Tonga Noweg
- Institute of Biodiversity and Environmental Conservation (IBEC), Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia
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Yousaf A, Zuharah WF. Lethal response of the dengue vectors to the plant extracts from family Anacardiaceae. Asian Pac J Trop Biomed 2015. [DOI: 10.1016/j.apjtb.2015.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Procópio TF, Fernandes KM, Pontual EV, Ximenes RM, de Oliveira ARC, Souza CDS, Melo AMMDA, Navarro DMDAF, Paiva PMG, Martins GF, Napoleão TH. Schinus terebinthifolius Leaf Extract Causes Midgut Damage, Interfering with Survival and Development of Aedes aegypti Larvae. PLoS One 2015; 10:e0126612. [PMID: 25974067 PMCID: PMC4431797 DOI: 10.1371/journal.pone.0126612] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 04/06/2015] [Indexed: 11/18/2022] Open
Abstract
In this study, a leaf extract from Schinus terebinthifolius was evaluated for effects on survival, development, and midgut of A. aegypti fourth instar larvae (L4), as well as for toxic effect on Artemia salina. Leaf extract was obtained using 0.15 M NaCl and evaluated for phytochemical composition and lectin activity. Early L4 larvae were incubated with the extract (0.3–1.35%, w/v) for 8 days, in presence or absence of food. Polymeric proanthocyanidins, hydrolysable tannins, heterosid and aglycone flavonoids, cinnamic acid derivatives, traces of steroids, and lectin activity were detected in the extract, which killed the larvae at an LC50 of 0.62% (unfed larvae) and 1.03% (fed larvae). Further, the larvae incubated with the extract reacted by eliminating the gut content. No larvae reached the pupal stage in treatments at concentrations between 0.5% and 1.35%, while in the control (fed larvae), 61.7% of individuals emerged as adults. The extract (1.0%) promoted intense disorganization of larval midgut epithelium, including deformation and hypertrophy of cells, disruption of microvilli, and vacuolization of cytoplasms, affecting digestive, enteroendocrine, regenerative, and proliferating cells. In addition, cells with fragmented DNA were observed. Separation of extract components by solid phase extraction revealed that cinnamic acid derivatives and flavonoids are involved in larvicidal effect of the extract, being the first most efficient in a short time after larvae treatment. The lectin present in the extract was isolated, but did not show deleterious effects on larvae. The extract and cinnamic acid derivatives were toxic to A. salina nauplii, while the flavonoids showed low toxicity. S. terebinthifolius leaf extract caused damage to the midgut of A. aegypti larvae, interfering with survival and development. The larvicidal effect of the extract can be attributed to cinnamic acid derivatives and flavonoids. The data obtained using A. salina indicates that caution should be used when employing this extract as a larvicidal agent.
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Affiliation(s)
- Thamara Figueiredo Procópio
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Cidade Universitária, 50670–420, Recife, Pernambuco, Brazil
| | - Kenner Morais Fernandes
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570–900, Viçosa, Minas Gerais, Brazil
| | - Emmanuel Viana Pontual
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Cidade Universitária, 50670–420, Recife, Pernambuco, Brazil
- Departamento de Morfologia e Fisiologia Animal, Universidade Federal Rural de Pernambuco, Dois Irmãos, 52171–900, Recife, Pernambuco, Brazil
| | - Rafael Matos Ximenes
- Departamento de Antibióticos, Universidade Federal de Pernambuco, 50670–420, Recife, Pernambuco, Brazil
| | - Aline Rafaella Cardoso de Oliveira
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Cidade Universitária, 50670–420, Recife, Pernambuco, Brazil
| | - Carolina de Santana Souza
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Cidade Universitária, 50670–420, Recife, Pernambuco, Brazil
| | | | - Daniela Maria do Amaral Ferraz Navarro
- Departamento de Química Fundamental, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, Cidade Universitária, 50740–560, Recife, Pernambuco, Brazil
| | - Patrícia Maria Guedes Paiva
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Cidade Universitária, 50670–420, Recife, Pernambuco, Brazil
| | - Gustavo Ferreira Martins
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570–900, Viçosa, Minas Gerais, Brazil
| | - Thiago Henrique Napoleão
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Cidade Universitária, 50670–420, Recife, Pernambuco, Brazil
- * E-mail:
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