Insecticidal efficacy and mechanism of nanoparticles synthesized from chitosan and carboxymethyl chitosan against Solenopsis invicta (Hymenoptera: Formicidae)

Zheng, Qun; Wang, Ruifei; Qin, Deqiang; Yang, Liupeng; Lin, Sukun; Cheng, Dongmei; Huang, Suqing; Zhang, Zhixiang

doi:10.1016/j.carbpol.2021.117839

Cited by 20 publications

(3 citation statements)

References 31 publications

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“…The encapsulation of the active ingredient must consider a matrix or polymer that accommodates the stimulate of the antifeedant compound when the polymer-enclosed material enters the oral and insect digestive system of the insect. This can be explained through the application of the chitosan-nanoparticle cross-linking agent formula studied by Zheng et al [104]. The degree of polymeric encapsulant swelling is determined based on the pH value corresponding to the acidity level in the digestive system of Solenopsis invicta in correlation with the consuming activities.…”

Section: Nano-delivery System Of Antifeedant Formulationmentioning

confidence: 99%

Nanotechnology-Based Bioactive Antifeedant for Plant Protection

et al. 2022

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The productivity of vegetable crops is constrained by insect pests. The search for alternative insect pest control is becoming increasingly important and is including the use of plant-derived pesticides. Plant-derived pesticides are reported as effective in controlling various insect pests through natural mechanisms, with biodegradable organic materials, diverse bioactivity, and low toxicity to non-target organisms. An antifeedant approach for insect control in crop management has been comprehensively studied by many researchers, though it has only been restricted to plant-based compounds and to the laboratory level at least. Nano-delivery formulations of biopesticides offer a wide variety of benefits, including increased effectiveness and efficiency (well-dispersion, wettability, and target delivery) with the improved properties of the antifeedant. This review paper evaluates the role of the nano-delivery system in antifeedant obtained from various plant extracts. The evaluation includes the research progress of antifeedant-based nano-delivery systems and the bioactivity performances of different types of nano-carrier formulations against various insect pests. An antifeedant nano-delivery system can increase their bioactivities, such as increasing sublethal bioactivity or reducing toxicity levels in both crude extracts/essential oils (EOs) and pure compounds. However, the plant-based antifeedant requires nanotechnological development to improve the nano-delivery systems regarding properties related to the bioactive functionality and the target site of insect pests. It is highlighted that the formulation of plant extracts creates a forthcoming insight for a field-scale application of this nano-delivery antifeedant due to the possible economic production process.

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Section: Nano-delivery System Of Antifeedant Formulationmentioning

confidence: 99%

Nanotechnology-Based Bioactive Antifeedant for Plant Protection

et al. 2022

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“…After gold plating, the samples were observed under scanning electron microscope (SEM; Verios 460, Thermo Fisher Scientific, Waltham, MA, USA). We used 10 insects in each experiment, with three replicates 19 …”

Section: Methodsmentioning

confidence: 99%

Azadirachtin inhibits the development and metabolism of the silk glands of Spodoptera frugiperda and affects spinning behavior

Zhao

Zheng

Qin

et al. 2022

Pest Management Science

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Spodoptera frugiperda is a major agricultural pest, and the 1st -3rd instar S. frugiperda have spinning behaviour and can drift to adjacent plants with the help of the wind. The present study found that azadirachtin can affect this behaviour, and the mechanism by which azadirachtin affects the spinning behaviour of S. frugiperda has been studied. In this study, the 3rd instar larvae were exposed to azadirachtin, and the pathological changes in the silk glands of S. frugiperda and the differences in their metabolites were analysed by pathological sectioning, transmission electron microscopy, metabolomics and other experimental methods. The results showed that azadirachtin can affect the silk gland of S. frugiperda. After 48 h of treatment with azadirachtin, the silk gland lumen of S. frugiperda appeared vacuolated, and KEGG showed that 31 different metabolites were identi ed, of which 12 were upregulated and 19 were downregulated. These metabolites were enriched in 15 different metabolic pathways, which pathways indicated that the silk gland of S. frugiperda was closely related to the formation of fatty acids and to energy metabolism in the process of silk formation. This research can further explain the spinning mechanism of insects and provide a research basis for determining the spinning, cocooning, and transfer damage mechanisms of many agricultural and forestry pests. Key MessageThe 1st -3rd instar Spodoptera frugiperda can spit and drift to neighbouring plants.Azadirachtin causes a decrease in the amino acids histidine, glycine, and leucine in the silk glands of Spodoptera frugiperda.Azadirachtin causes insect silk to break more easily.Feeding with azadirachtin for 72 h reduces Spodoptera frugiperda spinning.Azadirachtin can affect the development of the silk glands of Spodoptera frugiperda and thus affect silking behaviour.

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“…9,10 In recent years, nanotechnology has shown broad application prospects in improving pesticide efficacy, reducing ecotoxicity, reducing biotic stress and increasing plant immunity. 11,12 At present, a number of nanomaterials have been used as pesticide carriers or antimicrobial agents, such as polysaccharides, 13 silica, 14 metal organic frameworks (MOFs), 15 plant proteins, 16 and liposomes. These nanocarriers show excellent insecticidal activities or antimicrobial activities, and their stimulatory responses to light, pH, temperature, redox, and enzymes precisely control pesticide release.…”

Section: Introductionmentioning

confidence: 99%

Pectin-Coated Iron-Based Metal–Organic Framework Nanoparticles for Enhanced Foliar Adhesion and Targeted Delivery of Fungicides

Yang,

Chen,

Zhu

et al. 2024

ACS Nano

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Conventional agrochemicals are underutilized due to their large particle sizes, poor foliar retention rates, and difficult translocation in plants, and the development of functional nanodelivery carriers with high adhesion to the plant body surface and efficient uptake and translocation in plants remains challenging. In this study, a nanodelivery system based on a pectin-encapsulated iron-based MOF

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Insecticidal efficacy and mechanism of nanoparticles synthesized from chitosan and carboxymethyl chitosan against Solenopsis invicta (Hymenoptera: Formicidae)

Cited by 20 publications

References 31 publications

Nanotechnology-Based Bioactive Antifeedant for Plant Protection

Nanotechnology-Based Bioactive Antifeedant for Plant Protection

Azadirachtin inhibits the development and metabolism of the silk glands of Spodoptera frugiperda and affects spinning behavior

Pectin-Coated Iron-Based Metal–Organic Framework Nanoparticles for Enhanced Foliar Adhesion and Targeted Delivery of Fungicides

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