Oviposition preference not necessarily predicts offspring performance in the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) on vegetable crops DOI Creative Commons
Paola Sotelo-Cardona, Wen‐Po Chuang,

Meiying Lin

et al.

Scientific Reports, Journal Year: 2021, Volume and Issue: 11(1)

Published: Aug. 5, 2021

Abstract Given the new spread and potential damage of fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in Asia, it has become imperative to understand development biology this invasive species on selected vegetable crops newer geographical regions. In study, we investigated ovipositional preference FAW females different host plants, under choice- non-choice tests. addition, using age-stage, two-sex life table theory, assessed performance immature individuals fed reared get information related time, survival, reproduction longevity. Fall had an oviposition maize compared other crops, including cabbage soybean, reluctance for tomato, which was confirmed during choice contrast preference, our results also suggest that despite low cabbage, these seemed provide a high benefit appropriate offspring performance, exceeding some cases benefits from maize-based diet. Information study discussed terms ecology how female’s decision affects their reproductive fitness, survival its offspring.

Language: Английский

Retrotransposon-mediated disruption of a chitin synthase gene confers insect resistance to Bacillus thuringiensis Vip3Aa toxin DOI Creative Commons
Zhenxing Liu, Chongyu Liao, Luming Zou

et al.

PLoS Biology, Journal Year: 2024, Volume and Issue: 22(7), P. e3002704 - e3002704

Published: July 2, 2024

The vegetative insecticidal protein Vip3Aa from Bacillus thuringiensis (Bt) has been produced by transgenic crops to counter pest resistance the widely used crystalline (Cry) proteins Bt. To proactively manage resistance, there is an urgent need better understand genetic basis of Vip3Aa, which largely unknown. We discovered that retrotransposon-mediated alternative splicing a midgut-specific chitin synthase gene was associated with 5,560-fold in laboratory-selected strain fall armyworm, globally important crop pest. same mutation this also detected field population. Knockout via CRISPR/Cas9 caused high levels armyworm and 2 other lepidopteran pests. insights provided these results could help advance monitoring management Vip3Aa.

Language: Английский

Citations

10
Identification of differentially expressed miRNAs associated with diamide detoxification pathways in Spodoptera frugiperda DOI Creative Commons

Rashmi Manohar Mahalle,

Weilin Sun, Omar Posos-Parra

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Feb. 21, 2024

The fall armyworm (FAW) Spodoptera frugiperda is a severe economic pest of multiple crops globally. Control this often achieved using insecticides; however, over time, S. has developed resistance to new mode action compounds, including diamides. Previous studies have indicated diamide complex developmental process involving detoxification genes. Still, the mechanism underlying possible involvement microRNAs in post-transcriptional regulation not yet been elucidated. In study, global screen (miRNAs) revealed 109 known and 63 novel miRNAs. Nine miRNAs (four five novel) were differentially expressed between insecticide-resistant -susceptible strains. Gene Ontology analysis predicted putative target transcripts encoding significant genes belonging pathways. Additionally, are involved response exposure, indicating they probably associated with pathway. Thus, study provides comprehensive evidence for link repressed miRNA expression induced that possibly mediate through regulation. These findings highlight important clues further research unravel roles mechanisms conferring resistance.

Language: Английский

Citations

8
Two ABC transporters are differentially involved in the toxicity of two Bacillus thuringiensis Cry1 toxins to the invasive crop‐pest Spodoptera frugiperda (J. E. Smith) DOI
Minghui Jin, Yanchao Yang,

Yinxue Shan

et al.

Pest Management Science, Journal Year: 2020, Volume and Issue: 77(3), P. 1492 - 1501

Published: Nov. 4, 2020

Abstract BACKGROUND The fall armyworm Spodoptera frugiperda is a major agricultural pest that has invaded the East Hemisphere since 2016, generating serious threat to food security worldwide including Africa and Asia. Cry toxins produced by Bacillus thuringiensis (Bt) have been shown be effective against this insect pest. In different ABC transporters (ABCC2 or ABCC3) involved as receptors of some Cry1 toxins. Here we analyzed role SfABCC2 SfABCC3 in toxicity Cry1Fa Cry1Ab RESULTS Two S. knockout strains, coding for potential functional Bt receptors, were created using CRISPR/Cas9 genome editing system. Both strains showed resistance both compared with susceptible strain. strain higher than strain, suggesting mode action these addition, expression genes Trichoplusia ni Hi5 cells also increased susceptibility toxins, agreement results. double was not viable contrast other lepidopteran species. Furthermore, report here their abamectin spinosad insecticides. CONCLUSION We provide evidence two ABCC serve © 2020 Society Chemical Industry

Language: Английский

Citations

52
Detection of ryanodine receptor target‐site mutations in diamide insecticide‐resistant Spodoptera frugiperda in China DOI Creative Commons

Shenglan Lv,

Yang Shi,

Jia‐Cheng Zhang

et al.

Insect Science, Journal Year: 2021, Volume and Issue: 28(3), P. 639 - 648

Published: Jan. 1, 2021

Abstract Spodoptera frugiperda (Lepidoptera: Noctuidae) is a widely distributed pest of corn. Since it invaded China in 2018, has caused serious damage to local corn production. Chlorantraniliprole, an anthranilic diamide insecticide, been used control lepidopteran pests. Tetrachloropyramid new allosteric modulator insecticide developed based on chlorantraniliprole, so similar mechanism and insecticidal effect. In this study, we investigated resistance levels chlorantraniliprole tetrachloropyramid S. from 13 populations China. Among the tested, relative highest occurred Guangzhou population, most susceptible was found Wuhan population. The lethal dosage LD 50 value population against 27.8‐fold higher than that Minimal differences were observed among terms sensitivity tetrachloropyramid. Heterozygous mutations at I4734 site ryanodine receptor (RyR) found, while no G4891 site. detected only two 786 individuals analyzed, one Qinzhou other Anshun (frequency below 2% both cases). There significant expression RyR between populations. summary, our results indicate that: (i) low insecticides China; (ii) analyzed are not by or .

Language: Английский

Citations

52
A novel reference dated phylogeny for the genus Spodoptera Guenée (Lepidoptera: Noctuidae: Noctuinae): new insights into the evolution of a pest-rich genus DOI Creative Commons
Gaël J. Kergoat, Paul Z. Goldstein, Bruno Le Rü

et al.

Molecular Phylogenetics and Evolution, Journal Year: 2021, Volume and Issue: 161, P. 107161 - 107161

Published: March 30, 2021

Language: Английский

Citations

45
Geographic Monitoring of Insecticide Resistance Mutations in Native and Invasive Populations of the Fall Armyworm DOI Creative Commons
Sudeeptha Yainna, Nicolas Nègre, Pierre Silvie

et al.

Insects, Journal Year: 2021, Volume and Issue: 12(5), P. 468 - 468

Published: May 18, 2021

Field evolved resistance to insecticides is one of the main challenges in pest control. The fall armyworm (FAW) a lepidopteran species causing severe crop losses, especially corn. While native Americas, presence FAW was confirmed West Africa 2016. Since then, has been detected over 70 countries covering sub-Saharan Africa, Middle East, North South Asia, Southeast and Oceania. In this study, we tested whether invasion accompanied by spread mutations from invasive areas. We observed that Bt at ABCC2 genes were only populations where initially reported. Invasive found have higher gene numbers cytochrome P450 than proportion multiple acetylcholinesterase genes, supporting strong selective pressure for against synthetic insecticides. This result explains susceptibility various Chinese populations. These results highlight necessity regular standardized monitoring insecticide using both genomic approaches bioassay experiments.

Language: Английский

Citations

44
Updated assessment of potential biopesticide options for managing fall armyworm (Spodoptera frugiperda) in Africa DOI Creative Commons
Melanie Bateman, Roger Day, Ivan Rwomushana

et al.

Journal of Applied Entomology, Journal Year: 2021, Volume and Issue: 145(5), P. 384 - 393

Published: Jan. 18, 2021

Abstract The fall armyworm (FAW, Spodoptera frugiperda ) has recently spread to many countries in Africa, the Near East, Asia and Pacific. In sub‐Saharan Africa (SSA), more than 300 million people depend on FAW’s preferred host plant, maize, as a staple crop. Hence, of FAW SSA potential negatively affect livelihoods food security. Many farmers have responded by increasing their use synthetic pesticides, but these are not always used safely or effectively. More information sustainable alternatives high‐risk pesticides is needed inform decisions policy makers. previous paper, authors this need identifying fifty biopesticides which had been registered for management one 30 FAWs native region Africa. For each biopesticide identified, detailed profiles with efficacy against FAW; associated human health environmental hazards; agronomic sustainability; whether they practical smallholder were developed Research development (R4D) efforts ongoing management. study assessed current state knowledge documented how gaps filled (or not) since paper was published. found that there growing body field increased availability commercialized products. They also note remaining gaps, particularly compatibility other recommended practices, cost‐benefit analyses, important developing implementing IPM. An updated list priority research, promotion provided.

Language: Английский

Citations

41
Genetic architecture and insecticide resistance in Chinese populations of Spodoptera frugiperda DOI
Huanhuan Wang, Rui Zhao, Jie Gao

et al.

Journal of Pest Science, Journal Year: 2022, Volume and Issue: 96(4), P. 1595 - 1610

Published: Oct. 13, 2022

Language: Английский

Citations

36
Sublethal Effects of Emamectin Benzoate on Fall Armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) DOI Creative Commons

Zhuo-Kun Liu,

Xuelin Li,

Xiaofeng Tan

et al.

Agriculture, Journal Year: 2022, Volume and Issue: 12(7), P. 959 - 959

Published: July 3, 2022

Fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera: Noctuidae), is a highly invasive polyphagous pest that causes great economic losses to agricultural production. Emamectin benzoate (EMB) one of the most popular biopesticides with high antipest, anti-parasitic and anti-nematode activities low toxicity. The present study was conducted determine lethality EMB FAW for 24 h. Sublethal effects on parental offspring generations were also assessed. LC10, LC20 LC50 h third instar larvae 0.0127 mg/L, 0.0589 0.1062 respectively. A dose sublethal concentrations could significantly influence life cycle generations. concentration (LC20) prolonged pupal period male increased weight but not female, delayed oviposition longevity adult FAW. In generation, mortality pupae pre-adults, reduced development time pre-adult female. (LC10 LC20) decreased period. However, only LC10 F1 female fecundity. No significant difference found in intrinsic rates natural increase (rm), finite rate population (λ), net reproductive (R0) exposed concentrations. This first table parameters two These findings can provide important implications rational utilization insecticides.

Language: Английский

Citations

32
Enterococcal symbionts of caterpillars facilitate the utilization of a suboptimal diet DOI Creative Commons
Bosheng Chen, Charles J. Mason, Michelle Peiffer

et al.

Journal of Insect Physiology, Journal Year: 2022, Volume and Issue: 138, P. 104369 - 104369

Published: Feb. 11, 2022

Language: Английский

Citations

29