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Ho TNT, Turner A, Pham SH, Nguyen HT, Nguyen LTT, Nguyen LT, Dang TT. Cysteine-rich peptides: From bioactivity to bioinsecticide applications. Toxicon 2023; 230:107173. [PMID: 37211058 DOI: 10.1016/j.toxicon.2023.107173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 05/23/2023]
Abstract
Greater levels of insect resistance and constraints on the use of current pesticides have recently led to increased crop losses in agricultural production. Further, the health and environmental impacts of pesticides now restrict their application. Biologics based on peptides are gaining popularity as efficient crop protection agents with low environmental toxicity. Cysteine-rich peptides (whether originated from venoms or plant defense substances) are chemically stable and effective as insecticides in agricultural applications. Cysteine-rich peptides fulfill the stability and efficacy requirements for commercial uses and provide an environmentally benign alternative to small-molecule insecticides. In this article, cysteine-rich insecticidal peptide classes identified from plants and venoms will be highlighted, focusing on their structural stability, bioactivity and production.
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Affiliation(s)
- Thao N T Ho
- Institute of Applied Materials Science, Vietnam Academy of Science and Technology, 1B TL29, District 12, Ho Chi Minh City, Viet Nam
| | - A Turner
- Molecular Biology Department, University of Texas, 100 E 24th St. Austin, USA
| | - Son H Pham
- Institute of Applied Materials Science, Vietnam Academy of Science and Technology, 1B TL29, District 12, Ho Chi Minh City, Viet Nam
| | - Ha T Nguyen
- National Key Laboratory of Polymer and Composite Materials, Department of Energy Materials, Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam
| | - Linh T T Nguyen
- Department of Chemistry, Ho Chi Minh City University of Education, 280 an Duong Vuong Street, District 5, Ho Chi Minh City, Viet Nam
| | - Luan T Nguyen
- National Key Laboratory of Polymer and Composite Materials, Department of Energy Materials, Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam
| | - Tien T Dang
- Institute of Applied Materials Science, Vietnam Academy of Science and Technology, 1B TL29, District 12, Ho Chi Minh City, Viet Nam.
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de Oliveira WS, Sakuno CIR, Miraldo LL, Tavares MAGC, Komada KMA, Teresani D, Santos JLX, Huang F. Varied frequencies of resistance alleles to Cry1Ab and Cry1Ac among Brazilian populations of the sugarcane borer, Diatraea saccharalis (F.). PEST MANAGEMENT SCIENCE 2022; 78:5150-5163. [PMID: 36070208 DOI: 10.1002/ps.7133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/11/2022] [Accepted: 08/18/2022] [Indexed: 05/29/2023]
Abstract
BACKGROUND Brazil is the largest grower of the world's 26 million ha of sugarcane, Saccharum officinarum. Pest damage mainly by the sugarcane borer, Diatraea saccharalis (F.), is a great challenge to the sugarcane industry. To control D. saccharalis, Brazil launched the world's first commercial use of Bt sugarcane in 2017. As part of the resistance management programs for Bt sugarcane planting, 535 F2 isoline families of D. saccharalis collected from three major sugarcane planting states (Goiás, Minas Gerais and São Paulo) in Brazil during 2019-2020 were screened for resistance to two Bt sugarcane varieties: CTC20BT expressing Cry1Ab and CTC9001BT expressing Cry1Ac. Here we report the results of the first study related to Bt resistance in a sugarcane cropping system. RESULTS Larval survivorships of these families in an F2 screen on CTC20BT were highly correlated with their survival on CTC9001BT, whereas the Cry1Ac tissues exhibited greater insecticidal activities than Cry1Ab. Resistance allele frequencies (RAFs) for populations from Goiás and Minas Gerais were relatively low at 0.0034 for Cry1Ab and 0.0045 to Cry1Ac. By contrast, RAFs for São Paulo populations were considerably greater (0.0393 to Cry1Ab, 0.0245 to Cry1Ac). CONCLUSIONS RAFs to Cry1Ab and Cry1Ac varied among Brazilian D. saccharalis populations. Prior selection resulting from an intensive use of single-gene Bt maize under low compliance of refuge planting could be a main factor contributing to the high RAF in São Paulo. The results suggest that mitigation measures including sufficient non-Bt maize refuge planting, effective resistance monitoring, and use of pyramided Bt sugarcane traits should be implemented promptly to prevent further increase in the RAF to ensure the sustainable use of Bt sugarcane in Brazil. MINI ABSTRACT To control Diatraea saccharalis, Brazil launched the world's first commercial use of Bt sugarcane in 2017. As part of the resistance management programs for Bt sugarcane planting in Brazil, 535 F2 isoline families of D. saccharalis collected from three major sugarcane planting states (Goiás, Minas Gerais and São Paulo) in Brazil during 2019-2020 were screened for resistance to Cry1Ab and Cry1Ac sugarcane plants Resistance allele frequencies (RAFs) for the populations from Goiás and Minas Gerais were relatively low at 0.0034 for Cry1Ab and 0.0045 to Cry1Ac. By contrast, RAFs for the São Paulo populations were considerably greater (0.0393 to Cry1Ab, 0.0245 to Cry1Ac). Prior selection resulting from an intensive use of single-gene Bt maize under low compliance of non-Bt maize refuge planting could be a main factor contributing to the high RAF in São Paulo. The results suggest that effective mitigation measures including sufficient non-Bt maize refuge planting, effective resistance monitoring and use of pyramided Bt sugarcane traits should be implemented promptly to prevent further increase in the RAF to ensure the sustainable use of Bt sugarcane in Brazil. © 2022 Society of Chemical Industry.
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Affiliation(s)
| | | | | | | | | | | | | | - Fangneng Huang
- Department of Entomology, Louisiana State University Agricultural Center, Baton Rouge, LA, USA
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Borges dos Santos L, Paulo Gomes Viana J, José Biasotto Francischini F, Victoria Fogliata S, L. Joyce A, Pereira de Souza A, Gabriela Murúa M, J. Clough S, Imaculada Zucchi M. A first draft genome of the Sugarcane borer, Diatraea saccharalis. F1000Res 2020. [DOI: 10.12688/f1000research.26614.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: The sugarcane borer (Diatraea saccharalis), a widely distributed moth throughout the Americas, is a pest that affects economically important crops such as sugarcane, sorghum, wheat, maize and rice. Given its significant impact on yield reduction, whole-genome information of the species is needed. Here, we report the first draft assembly of the D. saccharalis genome. Methods: The genomic sequences were obtained using the Illumina HiSeq 2500 whole-genome sequencing of a single adult male specimen. We assembled the short-reads using the SPAdes software and predicted protein-coding genes using MAKER. Genome assembly completeness was assessed through BUSCO and the repetitive content by RepeatMasker. Results: The 453 Mb assembled sequences contain 1,445 BUSCO gene orthologs and 1,161 predicted gene models identified based on homology evidence to the domestic silk moth, Bombyx mori. The repeat content composes 41.18% of the genomic sequences which is in the range of other lepidopteran species. Conclusions: Functional annotation reveals that predicted gene models are involved in important cellular mechanisms such as metabolic pathways and protein synthesis. Thus, the data generated in this study expands our knowledge on the genomic characteristics of this devastating pest and provides essential resources for future genetic studies of the species.
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Fagundes Matioli T, Zanuzo Zanardi O, Takao Yamamoto P. Impacts of seven insecticides on Cotesia flavipes (Cameron) (Hymenoptera: Braconidae). ECOTOXICOLOGY (LONDON, ENGLAND) 2019; 28:1210-1219. [PMID: 31691907 DOI: 10.1007/s10646-019-02129-8] [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] [Accepted: 10/16/2019] [Indexed: 06/10/2023]
Abstract
The endoparasitoid wasp Cotesia flavipes (Cameron) (Hymenoptera: Braconidae) is inundatively released in Brazilian sugarcane plantations to control the sugarcane borers Diatraea saccharalis (Fabricius) and Diatraea flavipennella (Box) (Lepidoptera: Crambidae). In conjunction with these releases, several synthetic insecticides are used to control the neonate larvae of these pests. We assessed the lethal and transgenerational sublethal effects of seven of these insecticides on C. flavipes. Leaf discs were sprayed at the highest field concentrations of chlorantraniliprole, lambda-cyhalothrin + chlorantraniliprole, chlorfluazuron, triflumuron, lambda-cyhalothrin + thiamethoxam, tebufenozide, and novaluron. Distilled water was used as a negative control. Newly emerged females (24 h old) were placed in Petri dishes containing the treated leaves, and the lethal and transgenerational sublethal effects were assessed for the next two generations. Lambda-cyhalothrin + chlorantraniliprole and lambda-cyhalothrin + thiamethoxam caused 100% mortality of the parasitoid and were highly persistent, causing more than 30% mortality at 30 days after spraying. Chlorantraniliprole, chlorfluazuron, novaluron, and triflumuron did not cause significant mortality compared to the negative control, but did have transgenerational sublethal effects. The length of the tibia of the right posterior leg, used as a growth measurement, was reduced in the progeny (F1 generation) of exposed female parasitoids. In addition, chlorantraniliprole increased and chlorfluazuron reduced the proportion of females in the F1 generation, whereas novaluron reduced the proportion of females in the F2 generation. Overall, only tebufenozide was considered harmless to C. flavipes. The results of this study suggest that lambda-cyhalothrin + chlorantraniliprole and lambda-cyhalothrin + thiamethoxam are harmful to C. flavipes, although field studies are needed to obtain results for actual sugarcane crops.
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Affiliation(s)
- Thaís Fagundes Matioli
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, 13418-900, Brazil.
| | - Odimar Zanuzo Zanardi
- Department of Entomology, Fund for Citrus Protection (FUNDECITRUS), Araraquara, São Paulo, 14708-040, Brazil
| | - Pedro Takao Yamamoto
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, 13418-900, Brazil
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Pavinato VAC, Michel AP, de Campos JB, Omoto C, Zucchi MI. Influence of historical land use and modern agricultural expansion on the spatial and ecological divergence of sugarcane borer, Diatraea saccharalis (Lepidoptera: Crambidae) in Brazil. Heredity (Edinb) 2017; 120:25-37. [PMID: 29234172 DOI: 10.1038/s41437-017-0018-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 09/02/2017] [Accepted: 09/29/2017] [Indexed: 01/06/2023] Open
Abstract
Human-mediated changes in landscapes can facilitate niche expansion and accelerate the adaptation of insect species. The interaction between the evolutionary history of the sugarcane borer, Diatraea saccharalis Fabricius, and historical and modern agricultural activity in Brazil shaped its spatial genetic structure, facilitating ecological divergence and incipient host shifting. Based on microsatellite data, STRUCTURE analyses identified two (K = 2) and three (K = 3) significant genetic clusters that corresponded to: (a) a strong signal of spatial genetic structure and, (b) a cryptic signal of host differentiation. We inferred that K = 2 reflects the footprint of agricultural activity, such as expansion of crop production (sugarcane and maize), unintentional dispersion of pests, and management practices. In contrast, K = 3 indicated incipient host differentiation between larvae collected from sugarcane or maize. Our estimates of population size changes indicated that a historical bottleneck was associated with a reduction of sugarcane production ≈200 years ago. However, a more recent population expansion was detected (>1950s), associated with agricultural expansion of large crop production into previously unfarmed land. Partial Mantel tests supported our hypothesis of incipient host adaptation, and identified isolation-by-environment (e.g., host plant) in São Paulo and Minas Gerais states, where sugarcane has been traditionally produced in Brazil. The impact of agricultural production on D. saccharalis may continue, as the current population structure may hinder the efficacy of refuge plants in delaying insect resistance evolution to Bt toxin.
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Affiliation(s)
- Vitor A C Pavinato
- Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas, Avenida Bertrand Russel, s/n, Cidade Universitária Zeferino Vaz, 6109, Campinas, SP, Brazil. .,Department of Entomology, Ohio Agricultural Research and Development Center, Thorne Hall, The Ohio State University, 1680, Madison Avenue, Wooster, OH, USA.
| | - Andrew P Michel
- Department of Entomology, Ohio Agricultural Research and Development Center, Thorne Hall, The Ohio State University, 1680, Madison Avenue, Wooster, OH, USA
| | - Jaqueline B de Campos
- Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas, Avenida Bertrand Russel, s/n, Cidade Universitária Zeferino Vaz, 6109, Campinas, SP, Brazil
| | - Celso Omoto
- Department of Entomology and Acarology, University of São Paulo, Avenida Pádua Dias 11, CP 9, Piracicaba, SP, Brazil
| | - Maria I Zucchi
- Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas, Avenida Bertrand Russel, s/n, Cidade Universitária Zeferino Vaz, 6109, Campinas, SP, Brazil.,Agribusiness Technological Development of São Paulo (APTA), Laboratory of Conservation Genetics and Genomics, Rodovia SP 127 km 30, CP 28, Piracicaba, SP, Brazil
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