Frontiers in insect science最新文献_第6页

Impact of Bt corn expressing Bacillus thuringiensis Berliner insecticidal proteins on the growth and survival of Spodoptera frugiperda larvae in Colombia. 表达苏云金芽孢杆菌柏林虫杀虫蛋白的 Bt 玉米对哥伦比亚鞘翅目幼虫的生长和存活的影响。

Frontiers in insect science Pub Date : 2024-02-23 eCollection Date: 2024-01-01 DOI: 10.3389/finsc.2024.1268092

Jairo Rodriguez-Chalarca, Sandra J Valencia, Alejandra Rivas-Cano, Francisco Santos-González, Diana Patricia Romero

{"title":"Impact of Bt corn expressing Bacillus thuringiensis Berliner insecticidal proteins on the growth and survival of Spodoptera frugiperda larvae in Colombia.","authors":"Jairo Rodriguez-Chalarca, Sandra J Valencia, Alejandra Rivas-Cano, Francisco Santos-González, Diana Patricia Romero","doi":"10.3389/finsc.2024.1268092","DOIUrl":"10.3389/finsc.2024.1268092","url":null,"abstract":"Bioassays were conducted under controlled conditions to determine the response of Spodoptera frugiperda (J. E. Smith) larvae fed with corn materials expressing Bacillus thuringiensis (Bt) insecticidal endotoxins: (1) VT Double Pro® (VT2P) expressing Cry1A.105-Cry2Ab2 proteins and (2) VT Triple Pro® (VT3P) expressing Cry1A.105-Cry2Ab2-Cry3Bb1 proteins. The parameters assessed were: (i) mortality rate, and (ii) growth inhibition (GI) with respect to the control. To conduct this study, larvae were collected from commercial non-Bt corn fields, in four agricultural sub-regions in Colombia, between 2018 and 2020. Fifty-two populations were assessed from the field and neonate larvae from each of the populations were used for the bioassays. The study found that mortality rates in the regions for larvae fed with VT2P corn ranged from 95.1 to 100.0%, with a growth inhibition (%GI) higher than 76.0%. Similarly, mortality rate for larvae fed with VT3P corn were between 91.4 and 100.0%, with a %GI above 74.0%. The population collected in Agua Blanca (Espinal, Tolima; Colombia) in 2020, showed the lowest mortality rate of 53.2% and a %GI of 73.5%, with respect to the control. The population that exhibited the lowest %GI was collected in 2018 in Agua Blanca (Espinal, Tolima, Colombia) with a 30.2%, growth inhibition, with respect to the control. In recent years, the use of plant tissue to monitor susceptibility to fall armyworm has proven to be useful in the resistance management program for corn in Colombia determining that the FAW populations are still susceptible to Bt proteins contained in VT2P and VT3P.","PeriodicalId":517424,"journal":{"name":"Frontiers in insect science","volume":"4 ","pages":"1268092"},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10926427/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140103154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accurate identification of Helicoverpa armigera-Helicoverpa zea hybrids using genome admixture analysis: implications for genomic surveillance. 利用基因组掺杂分析准确识别 Helicoverpa armigera-Helicoverpa zea 杂交种：对基因组监控的影响。

IF 2.4

Frontiers in insect science Pub Date : 2024-02-23 eCollection Date: 2024-01-01 DOI: 10.3389/finsc.2024.1339143

Dario Trujillo, Thiago Mastrangelo, Consuelo Estevez de Jensen, Jose Carlos Verle Rodrigues, Roger Lawrie, Steven E Massey

{"title":"Accurate identification of Helicoverpa armigera-Helicoverpa zea hybrids using genome admixture analysis: implications for genomic surveillance.","authors":"Dario Trujillo, Thiago Mastrangelo, Consuelo Estevez de Jensen, Jose Carlos Verle Rodrigues, Roger Lawrie, Steven E Massey","doi":"10.3389/finsc.2024.1339143","DOIUrl":"10.3389/finsc.2024.1339143","url":null,"abstract":"Helicoverpa armigera, the cotton bollworm moth, is one of the world's most important crop pests, and is spreading throughout the New World from its original range in the Old World. In Brazil, invasive H. armigera has been reported to hybridize with local populations of Helicoverpa zea. The correct identification of H. armigera-H. zea hybrids is important in understanding the origin, spread and future outlook for New World regions that are affected by outbreaks, given that hybridization can potentially facilitate H. zea pesticide resistance and host plant range via introgression of H. armigera genes. Here, we present a genome admixture analysis of high quality genome sequences generated from two H. armigera-H. zea F1 hybrids generated in two different labs. Our admixture pipeline predicts 48.8% and 48.9% H. armigera for the two F1 hybrids, confirming its accuracy. Genome sequences from five H. zea and one H. armigera that were generated as part of the study show no evidence of hybridization. Interestingly, we show that four H. zea genomes generated from a previous study are predicted to possess a proportion of H. armigera genetic material. Using unsupervised clustering to identify non-hybridized H. armigera and H. zea genomes, 8511 ancestry informative markers (AIMs) were identified. Their relative frequencies are consistent with a minor H. armigera component in the four genomes, however its origin remains to be established. We show that the size and quality of genomic reference datasets are critical for accurate hybridization prediction. Consequently, we discuss potential pitfalls in genome admixture analysis of H. armigera-H. zea hybrids, and suggest measures that will improve such analyses.","PeriodicalId":517424,"journal":{"name":"Frontiers in insect science","volume":"4 ","pages":"1339143"},"PeriodicalIF":2.4,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10926370/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140103153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum: Dichotomous sperm in Lepidopteran insects: a biorational target for pest management. 更正：鳞翅目昆虫的二歧精子：害虫管理的生物目标。

Frontiers in insect science Pub Date : 2024-02-16 eCollection Date: 2024-01-01 DOI: 10.3389/finsc.2024.1343089

Rakesh K Seth, Priya Yadav, Stuart E Reynolds

引用次数: 0

Editorial: Current status of honey bee genetic and breeding programs: progress and perspectives. 社论：蜜蜂遗传和育种计划的现状：进展与展望。

Frontiers in insect science Pub Date : 2024-01-29 eCollection Date: 2024-01-01 DOI: 10.3389/finsc.2024.1365665

María Alejandra Palacio, Ernesto Guzman-Novoa, Alejandra Carla Scannapieco, Agostina Giacobino, Fanny Mondet

引用次数: 0

Corrigendum: Modeling-informed Engineered Genetic Incompatibility strategies to overcome resistance in the invasive Drosophila suzukii. 更正：以建模为基础的工程基因不相容策略，克服入侵果蝇的抗药性。

Frontiers in insect science Pub Date : 2024-01-12 eCollection Date: 2023-01-01 DOI: 10.3389/finsc.2023.1360167

Adam Sychla, Nathan R Feltman, William D Hutchison, Michael J Smanski

引用次数: 0