Pest Management Science, Journal Year: 2024, Volume and Issue: 81(1), P. 240 - 246
Published: Sept. 20, 2024
Cnaphalocrocis medinalis is one of the major rice insect pests in Asia. Chlorantraniliprole most important insecticides for control C. medinalis. In this study, a field-resistant population and susceptible strain were used to evaluate inheritance chlorantraniliprole resistance fitness costs field.
Language: Английский
Biocatalysis and Agricultural Biotechnology, Journal Year: 2024, Volume and Issue: 58, P. 103146 - 103146
Published: April 3, 2024
Language: Английский
Citations
7
Pest Management Science, Journal Year: 2024, Volume and Issue: 80(9), P. 4371 - 4385
Published: April 25, 2024
Abstract BACKGROUND The use of unmanned aerial vehicles (UAVs) for the application plant protection products (PPPs) in paddy fields is becoming increasingly prevalent worldwide. Despite its growing usage, UAV spraying rice pest control faces practical challenges, including limited canopy penetration, uneven deposition, and significant spray drift. This study investigated impact two tank‐mix adjuvants, Wonderful Rosin (Adjuvant‐1) Tiandun (Adjuvant‐2), at six volume concentrations, on liquid's physicochemical properties, drift, biological efficacy insecticides using a quadrotor sprayer. RESULTS characteristics liquid influenced performance efficacy. Incorporating Adjuvant‐1 Adjuvant‐2 led to decrease surface tension contact angle while increasing viscosity solution. These alterations contributed an optimized droplet size distribution, reduced enhanced deposition uniformity improved against planthopper applications. highest was observed concentration 0.5%, showing improvement 35.12% 20.23% (Adjuvant‐2) over applications without adjuvant 7 days after treatment. CONCLUSION judicious selection adjuvants PPP can significantly enhance controlling insects. study's findings offer valuable insights integrating into © 2024 Society Chemical Industry.
Language: Английский
Citations
6
Pesticide Biochemistry and Physiology, Journal Year: 2024, Volume and Issue: 203, P. 106019 - 106019
Published: July 6, 2024
Language: Английский
Citations
6
Insect Science, Journal Year: 2023, Volume and Issue: 31(3), P. 835 - 846
Published: Oct. 17, 2023
Abstract The rice stem borer (RSB), Chilo suppressalis , a notorious pest in China, has evolved high resistance level to commonly used insecticides. Tetraniliprole, new anthranilic diamide insecticide, effectively controls multiple pests, including RSB. However, the potential risk of RSB tetraniliprole is still unknown. In this study, tetraniliprole‐selection (Tet‐R) strain was obtained through 10 continuous generations selection with 30% lethal concentration (LC 30 ). realized heritability ( h 2 ) Tet‐R 0.387, indicating that developed rapidly under tetraniliprole. had fitness cost (relative = 0.53). We established susceptibility baseline (lethal at LC 50 0.727 mg/L) and investigated 6 field populations All tested strains chlorantraniliprole exhibited moderate‐ high‐level (resistance ratio 27.7−806.8). Detection ryanodine receptor (RyR) mutations showed Y4667C, Y4667D, I4758M, Y4891F were present populations. RyR responsible for cross‐resistance between chlorantraniliprole. Further, clustered regularly interspaced palindromic repeats (CRISPR) / CRISPR‐associated protein 9‐mediated genome‐modified flies study contribution resistance. order single mutation Y4667D > G4915E Y4667C ≈ I4758M Y4891F. addition, double conferred higher than mutations. These results can guide management practices diamides other arthropods.
Language: Английский
Citations
13
Rice, Journal Year: 2024, Volume and Issue: 17(1)
Published: Jan. 20, 2024
Language: Английский
Citations
5
Rice Science, Journal Year: 2025, Volume and Issue: unknown
Published: March 1, 2025
Language: Английский
Citations
0
Pest Management Science, Journal Year: 2025, Volume and Issue: unknown
Published: March 11, 2025
Abstract BACKGROUND Outbreaks of the rice leaf folder ( Cnaphalocrocis medinalis ) poses a significant threat to production. Silk‐spinning creates an enclosed roll that protects larvae from predators and insecticides, while serving as feeding site facilitating host transfer leaf‐folding. Disrupting this behaviour could enhance control strategies. The silk fibroin gene, essential for production, remains poorly understood in C. . RESULT We cloned 644‐bp fragment heavy chain (CmFib‐H) gene full‐length 1158‐bp light (CmFib‐L) Both genes showed high expression during larval stage, particularly glands. Third‐instar injected with dsCmFib‐H, dsCmFib‐L, or both, displayed disrupted silk‐spinning leaf‐folding behaviours 48 h postinjection, significantly reduced primary fold length binding numbers compared dsGFP control. Ultrastructural analysis revealed disorganized diameter co‐injected larvae, mechanical testing indicated decreased compressive tensile strength silk. Additionally, injecting dsCmFib‐H dsCmFib‐L into 5 th ‐instar pupation rate, pupal weight eclosion rate postinjection. CONCLUSION Our study elucidates pivotal roles behaviour, properties developmental processes These findings advance understanding functional these important insects lay foundation development novel strategies focused on targeting © 2025 Society Chemical Industry.
Language: Английский
Citations
0
Insects, Journal Year: 2025, Volume and Issue: 16(4), P. 387 - 387
Published: April 4, 2025
With over 1000 species of pests causing losses in both the quantity and quality stored food, insect contamination poses significant challenges. The present study assesses efficacy combination λ-cyhalothrin chlorantraniliprole against four key storage pests—Trogoderma granarium, Sitophilus oryzae, Rhyzopertha dominica, Tribolium castaneum. Laboratory bioassays demonstrated species-dependent mortality, with S. oryzae R. dominica suffering 100% mortality several tested scenarios. A 90-day persistence trial revealed decreased time, especially for T. granarium (32.0–71.4% at 0 days 0.0–7.5% 90 days) castaneum (38.8–82.7% 0.0–12.7% vs. dominica. Progeny production was almost suppressed trials (0.4 individuals per vial 1 individual vial, respectively) after 30 dose 5 mg/kg wheat. results highlight variability insecticidal performance based on species, dose, exposure, commodity type, emphasizing need tailored pest management strategies environment.
Language: Английский
Citations
0
Journal of Agricultural and Food Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: April 8, 2025
Chilo suppressalis is a major rice pest with escalating resistance to diamide insecticides, threatening sustainable management. However, the precise molecular mechanisms underlying this remain unclear. In study, we assessed sensitivity of 71 C. field populations in China chlorantraniliprole during 2023-2024 and investigated target-site mutations associated resistance. The proportion highly resistant increased 80% 2023 (RR = 111.6-2706.4) 90.3% 2024 160-1794.7). Multiple RyR mutations, including Y4667D, were identified populations. Introgressing Y4667D mutation into laboratory strain generated 4667D strain, which exhibited high other diamides. Resistance showed autosomal inheritance incomplete dominance. Modeling docking revealed that reduced CsRyR binding affinity for chlorantraniliprole. Furthermore, conferred significant fitness costs such as longer larval duration reproductive output. These findings provide insights resistance, inform pesticide management strategies, aid development novel resistance-breaking pesticides.
Language: Английский
Citations
0
Plants, Journal Year: 2024, Volume and Issue: 13(4), P. 479 - 479
Published: Feb. 7, 2024
Odorant-binding proteins (OBPs) play important roles in the insect olfactory system since they bind external odor molecules to trigger responses. Previous studies have identified some plant-derived volatiles that attract pervasive pest Cnaphalocrocis medinalis (Lepidoptera: Pyralidae), such as phenylacetaldehyde, benzyl acetate, 1-heptanol, and hexanal. To characterize of CmedOBPs recognition these four volatiles, we analyzed binding abilities selected each compounds, well expression patterns different developmental stages C. adult. Antennaes adults were sensitive studied plant volatile combinations. Expression levels multiple significantly increased antennae 2-day-old after exposure volatiles. CmedOBP1, CmedOBP6, CmedPBP1, CmedPBP2, CmedGOBP2 up-regulated volatile-stimulated female male when compared untreated controls. Fluorescence competition assays confirmed CmedOBP1 could strongly hexanal, phenylacetaldehyde; CmedOBP15 bound acetate CmedOBP26 weakly 1-heptanol. This study lays a theoretical foundation for further analysis mechanisms by which can medinalis. It also provides technical basis future development efficient attractants
Language: Английский
Citations
2