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Uesugi R, Jouraku A, Sukonthabhirom Na Pattalung S, Hinomoto N, Kuwazaki S, Kanamori H, Katayose Y, Sonoda S. Origin, selection, and spread of diamide insecticide resistance allele in field populations of diamondback moth in east and southeast Asia. PEST MANAGEMENT SCIENCE 2021; 77:313-324. [PMID: 33411414 DOI: 10.1002/ps.6020] [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: 04/09/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND The investigation of molecular mechanisms and evolution of resistance to insecticides is an ongoing challenge, as researchers must provide guidance to manage the resistance to achieve sustainable production in agriculture. Predicting, monitoring, and managing insecticide resistance requires information on the origins, selection, and spread of resistance genes. The resistance of Plutella xylostella (L.) against diamide insecticides is becoming an increasingly severe problem in east and southeast Asia. In this study, the evolution of resistance was investigated using a resistance allele [ryanodine receptor (RyR); G4946E mutation] and its flanking regions, as well as mitochondrial cytochrome c oxidase subunit I (mtCOI). RESULTS The sequences of the flanking region of the G4946E and mtCOI suggested that the G4946E mutation has a key role in resistance. Furthermore, the G4946E mutation has multiple origins, and congenic resistant mutations have spread across east and southeast Asia, despite substantial geographical barriers. In addition, the susceptibility of field populations partially recovered during winter, based on the observed decrease in the G4946E (resistant allele) frequency. Finally, the resistance level indexed by the frequency of the E4946 allele was significantly lower in non-overwintering regions than in overwintering regions. CONCLUSION The information of the present study is useful to monitor resistance using molecular markers and to develop strategies to delay the evolution of diamide resistance.
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Affiliation(s)
- Ryuji Uesugi
- Division of Agro-Environment Research, Tohoku Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Iwate, Japan
| | - Akiya Jouraku
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | | | - Norihide Hinomoto
- Department of Applied Entomology and Zoology, Central Region Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Seigo Kuwazaki
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Hiroyuki Kanamori
- Advanced Genomics Breeding Section, Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Yuichi Katayose
- Advanced Genomics Breeding Section, Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Shoji Sonoda
- Department of Agrobiology and Bioresources, School of Agriculture, Utsunomiya University, Tochigi, Japan
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Ahmad R, Ahmad N, Aljamea A, Abuthayn S, Aqeel M. Evaluation of solvent and temperature effect on green accelerated solvent extraction (ASE) and UHPLC quantification of phenolics in fresh olive fruit (Olea europaea). Food Chem 2020; 342:128248. [PMID: 33041170 DOI: 10.1016/j.foodchem.2020.128248] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 09/07/2020] [Accepted: 09/26/2020] [Indexed: 11/17/2022]
Abstract
A green ASE (accelerated solvent extraction) with a shorter UHPLC (ultra-high performance liquid chromatography) method was developed for simultaneous determination of phenolics. High extract yield (130 mg/g) was observed for water at 100 °C in a short time of 19.5 min using 33.5 mL solvent whereas, UHPLC showed more phenolics of GA (gallic acid), QT (quercetin), LT (luteolin) in ACE (acetone) and RT (rutin) in EtOH (ethanol) solvent at 60 °C. The binary solvent system of ACE: EtOH (1:1) at 60 °C was optimized as extraction set. UHPLC runtime was 3 min with retention times of (min); 0.63 (GA), 0.97 (RT), 2.00 (QT) and 2.41 (LT). Average for phenolics (ppm) was, QT (10.91) > GA (7.33) > LT (4.10) > RT (3.90) whereas, Spanish whole green olive (SP2) showed more phenolics (20.72). Individual phenolic was, GA (47.06) > RT (26.21) > QT (19.34) > LT (6.18). Multivariate, K-mean and PCA (principal component analysis) for solvent*extract yield showed significant correlation and temperature showed no significant correlation for phenolics.
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Affiliation(s)
- Rizwan Ahmad
- Natural Products and Alternative Medicines, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O Box # 1982, Dammam 31441, Saudi Arabia.
| | - Niyaz Ahmad
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O Box # 1982, Dammam 31441, Saudi Arabia; Departmet of Pharmaceutical Chemistry, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O Box # 1982, Dammam 31441, Saudi Arabia
| | - Ahmed Aljamea
- College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O Box # 1982, Dammam 31441, Saudi Arabia
| | - Saad Abuthayn
- College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O Box # 1982, Dammam 31441, Saudi Arabia
| | - Mohammed Aqeel
- College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O Box # 1982, Dammam 31441, Saudi Arabia
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Phylogeography of Organophosphate Resistant ace Alleles in Spanish Olive Fruit Fly Populations: A Mediterranean Perspective in the Global Change Context. INSECTS 2020; 11:insects11060396. [PMID: 32604835 PMCID: PMC7349299 DOI: 10.3390/insects11060396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 02/04/2023]
Abstract
The olive fruit fly (olf) Bactrocera oleae is the most damaging olive pest. The intensive use of organophosphates (OPs) to control it, led to an increase in resistance in field populations. This study assesses the presence and distribution of three mutations at the ace gene related to target site insensitivity to OPs in Spain. Samples from other Mediterranean countries were included as external references. Resistance-conferring alleles (from exons IV and VII of the ace gene) reached almost an 80% frequency in olf Spanish populations. In total, 62% of them were homozygous (RR/RR), this being more common in eastern mainland Spain. High frequencies of RR/RR individuals were also found in North Mediterranean samples. Conversely, in Tunisia, only sensitive alleles were detected. Finally, the exon X mutation ∆Q3 had an extremely low frequency in all samples. The high frequency of genotype RR/RR in Spain indicates high fitness in an agroecosystem treated with pesticides, in contrast to ∆Q3. At exon IV all flies carried the same haplotype for the allele conferring resistance. The sequence analysis at this exon suggests a unique origin and fast expansion of the resistant allele. These results provide evidence that OPs appropriate use is needed and prompt the search for alternative methods for olf pest control.
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Alves SN, Pujoni DGF, Mocelin G, Melo AL, Serrão JE. Evaluation of Culex quinquefasciatus wings asymmetry after exposure of larvae to sublethal concentration of ivermectin. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:3483-3488. [PMID: 31820251 DOI: 10.1007/s11356-019-06963-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
The surviving insects submitted to chemical control have morphological alterations that impact on their mechanisms of resistance and their final development. Those changes are detected and measured using physical features related to symmetry, specifically named fluctuating asymmetry. This is detected when deviations from the perfect bilateral symmetry for specific morphological characteristic is influenced by genetics or environmental stress. Thus, in this paper we analyze the wing in adult of Culex quinquefasciatus (Diptera - Culicidae) after larvae exposure to ivermectin LC50. Three hundred larvae of C. quinquefasciatus were exposed to ivermectin in 1.5 μg/L (LC50) concentration during 30 min, and three hundred larvae were exposed to distilled pure water as control group. For fluctuating asymmetry, adult males and adult females were selected from each group (n = 83) from the untreated group and (n = 79) from treated group. Wings from adults of each group were mounted in glass microscope slides and coverslip in Canada's balsam and analyzed with a stereomicroscope with a video camera attached. The treatment effect on M3 + 4 was marginally significant with higher asymmetry values in the control group. The data obtained here suggest the importance of future experiments to elucidate the mechanisms associated with FA. Moreover, according to the results obtained, it may be suggested that FA is present in females in ornaments, or secondary sexual characters, as an indicator of phenotypic quality of the partners.
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Affiliation(s)
- Stênio Nunes Alves
- Campus Centro-Oesde Dona Lindu, Federal University of São João del Rei, Av. Sebastião Gonçalves Coelho, 400 - Chanadour, Divinópolis, MG, 35501-296, Brazil.
| | - Diego G F Pujoni
- Department of Ecology, Federal University of Minas Gerais, Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil
| | - Giovani Mocelin
- Federal University of Paraná, Jardim das Américas, Curitiba, PR, 81531-990, Brazil
| | - Alan L Melo
- Department of Parasitology, Federal University of Minas Gerais, Av. Antônio Carlos, 6627-Pampulha, Belo Horizonte, MG, 31270-901, Brazil
| | - José E Serrão
- Department of Animal Biology, Federal University of Viçosa, Viçosa, MG, 36570-000, Brazil
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Eti CN, Dogac E, Gocmen Taskin B, Gokdere G, Taskin V. Population structure and patterns of geographic differentiation of Bactrocera oleae (Diptera: Tephritidae) in Eastern Mediterranean Basin. Mitochondrial DNA A DNA Mapp Seq Anal 2017; 29:1051-1062. [PMID: 29157052 DOI: 10.1080/24701394.2017.1404045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The olive fly (Bactrocera oleae) is the most destructive pest of olives in most commercial olive-growing regions worldwide. Significant economic damage to olive production is caused by the larvae of this fly, which feed on the pulp of Olea fruits. Studying the genetic structure of insect pest populations is essential for the success of pest management strategies. Our primary goal in the present study was to examine the population structures of olive flies collected over a wide geographic area from Turkey, a representative of eastern Mediterranean region, using two mitochondrial DNA sequences as genetic markers. The data revealed a high level of genetic variability in olive fly populations and a moderate level of genetic differentiation between Mediterranean and Aegean populations in Turkey. We also merged the sequences obtained in the present study with previously published sequences from across the world into the data matrix. Strong population substructure and a significant correlation between genetic and geographic distances were detected in northern Mediterranean basin populations of B. oleae, indicating the possibility of a westward expansion of the species in the continent. In addition, our results revealed a very close genetic relationship between the Aegean and Iranian populations, which suggests that B. oleae was introduced to Iran from western parts of Turkey. However, additional markers and analytical approaches are required to determine the exact colonization route of olive fly.
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Affiliation(s)
- Ceren Naz Eti
- a Department of Biology, Faculty of Science , Muğla Sıtkı Kocman University , Kotekli , Turkey
| | - Ersin Dogac
- b Department of Medicinal and Aromatic Plants , Koycegiz Vocational School, Mugla Sitki Kocman University , Mugla , Turkey
| | - Belgin Gocmen Taskin
- a Department of Biology, Faculty of Science , Muğla Sıtkı Kocman University , Kotekli , Turkey
| | - Güven Gokdere
- a Department of Biology, Faculty of Science , Muğla Sıtkı Kocman University , Kotekli , Turkey
| | - Vatan Taskin
- a Department of Biology, Faculty of Science , Muğla Sıtkı Kocman University , Kotekli , Turkey
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