Development of spirotetramat nanoparticles based on mesoporous silica: improving the uptake and translocation of spirotetramat in plants

Wang, Zhichao; Xu, Wangjin; Meng, Zhiyuan; Fan, Tianle; Yang, Chunmei; Wang, Jianjun; Chen, Xiaojun

doi:10.1007/s11356-022-23030-8

Cited by 7 publications

(6 citation statements)

References 14 publications

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“…The LC50 lethal effect of EB 5 SG on FAW third instar larvae for 24 h was 0.103 mg·L –1 and that of LD95 was 0.552 mg·L –1 . 18 , 40 After 12.5 g.a.i.·ha –1 of EB was sprayed in the field, the decline rate of FAW was 94.54% within 3 days, but the control effect was only maintained for 7 days. After 7 days, the number of FAW larvae on the maize plants increased gradually.…”

Section: Resultsmentioning

confidence: 98%

“…Silica particles have a large specific surface area and strong adsorption capacity for polar substances . Pesticides can be embedded with silica and sprayed on the surface or absorbed by the roots of plants and transported to other parts. , …”

Section: Introductionmentioning

confidence: 99%

“… 16 Pesticides can be embedded with silica and sprayed on the surface or absorbed by the roots of plants and transported to other parts. 17 , 18 …”

Section: Introductionmentioning

confidence: 99%

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Distribution of Emamectin Benzoate Granules in Maize Plants by Broadcasting into Maize Leaf Whorls

et al. 2023

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Good control effects on fall armyworm (FAW) can be obtained by broadcasting emamectin benzoate (EB) granules into maize leaf whorls. However, the distribution of EB in maize plants is not clear. In this study, EB granules were prepared by the rotating granulation method, and the granules were characterized using a Fourier transform infrared spectrometer. The behavior of EB granules in water was observed using a microscope, and in vitro release of EB from granules was also studied. A method for the determination of EB in maize plants, old leaves, grains, and cobs was established by using ultra-performance liquid chromatography-tandem mass spectrometry. The results showed that EB was loaded in granules successfully, and the granules disintegrated slowly in water, so the release of granules could be regulated using various water contents. The prepared EB granules were qualified and stable. The field experiment showed that the concentration of EB in maize leaf whorls could be maintained above 0.23 mg·kg–1 within 3 days after broadcasting EB granules. This ensured that FAW could be killed in a short time. Then, EB gradually transferred to the old leaves. After 21 days of application, the content of EB in the old leaves was 0.07 mg·kg–1, which has long-time control effects on FAW. The control effects of the three doses of granules against Spodoptera frugiperda were higher than 78% after 14 days of application. At the tested dosage, no phytotoxicity to crops was observed. At harvest, neither the maize grain nor the cobs had EB content. New controlled formulations to S. frugiperda were developed and will be suitable for application in mountainous areas where the lack of water resources is a factor.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Distribution of Emamectin Benzoate Granules in Maize Plants by Broadcasting into Maize Leaf Whorls

et al. 2023

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“…Nanomaterials have been used as controlled-release pesticides to ensure that a drug can more accurately reach a target site, increase the drug duration, and improve the effective utilization of the drug. − Inorganic–organic hybrid nanoparticles based on mesoporous silica nanoparticles (MSNs) have attracted much attention for their good biocompatibility, physical stability, and easy surface functionalization. − Yang et al developed a buprofezin delivery system prepared using MSNs as the core and poly as the shell to prevent the degradation of buprofezin under UV light . Wang’s group prepared spiroworm tetramer nanodrug-loading particles, which could improve the uptake and translocation of spirotetramat in plants . Zeng’s team synthesized fluorescent core–shell SiO 2 NPs to study the transport and retention of three widely utilized porous materials, i.e., sand, anthracite, and granular activated carbon (GAC) .…”

Section: Introductionmentioning

confidence: 99%

“…42 Wang's group prepared spiroworm tetramer nanodrug-loading particles, which could improve the uptake and translocation of spirotetramat in plants. 43 transport and retention of three widely utilized porous materials, i.e., sand, anthracite, and granular activated carbon (GAC). 44 In addition, as a mineral element necessary for plant growth, silicon also promotes plant photosynthesis, enhances plant disease resistance, and increases crop yield.…”

Section: Introductionmentioning

confidence: 99%

Bioactivity, Uptake, and Distribution of Prothioconazole Loaded on Fluorescent Double-Hollow Shelled Mesoporous Silica in Soybean Plants

Wang

Zhao

et al. 2023

J. Agric. Food Chem.

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Prothioconazole (PTC) has been widely utilized for plant fungal disease control, but its metabolite prothioconazoledesthio (PTC-d) exhibits reproductive toxicity. In the present study, carbon quantum dot (CQD)-modified fluorescent doublehollow shelled mesoporous silica nanoparticles (FL-MSNs) loaded with PTC, referred to as PTC@FL-MSNs, were constructed with an average size of 369 nm and a loading capacity of 28.1 wt %, which could increase the antifungal efficiency of PTC. In addition, upright fluorescence microscope and UPLC-MS/MS studies showed that PTC@FL-MSNs could be effectively transported via root uptake and foliar spray in soybean plants. Compared to a 30% PTC dispersible oil suspension agent, the PTC@FL-MSN treatment group showed higher concentrations (leaves: 0.50 > 0.48 mg/kg), longer half-lives for degradation (leaves: 3.62 > 3.21 d; roots: 3.39 > 2.82 d), and fewer metabolites. These findings suggest that sustained pesticide release and toxicity reduction are potential applications for PTC nanofungicide delivery technology.

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Efficacy of drip irrigation with thiamethoxam on control of Monolepta hieroglyphica, and uptake, translocation and dietary risk of thiamethoxam in maize

Yan

Zheng

Yang

et al. 2023

Pest Management Science

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BACKGROUNDMonolepta hieroglyphica (Motschulsky) is an important agricultural pest that causes significant economic losses in terms of crop production. Conventional pesticide spraying treatments can result in pesticide drift, endanger nontarget organisms, and cause pests to fly away, resulting in unsatisfactory prevention and control effects. To study the effect of thiamethoxam on the control of maize M. hieroglyphica, a field experiment was conducted to determine the optimal thiamethoxam application dose, its spatial and temporal distribution dynamics and its dietary risk based on its control effect when applied by spray and drip irrigation.RESULTSThe results of the field trials showed that compared with spray irrigation, drip irrigation resulted in greater control starting from the 5th day. This result was due to the hysteresis effect of thiamethoxam being first absorbed by the roots and then continuously transferred upward, where it accumulates. After 30 days of drip irrigation with 75 and 150 g a.i. ha‐1 thiamethoxam, the control effect on M. hieroglyphica was 32.41‐49.44% and 69.77‐80.57%, respectively. The results of the dietary risk assessment showed that the risk of thiamethoxam ingestion through maize kernels was acceptable regarding its effect on human health.CONCLUSIONSDrip irrigation with thiamethoxam can improve the effective utilization rate of pesticides, achieve precise control of maize M. hieroglyphica, and provide a new method for sustainable agricultural production.This article is protected by copyright. All rights reserved.

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Development of spirotetramat nanoparticles based on mesoporous silica: improving the uptake and translocation of spirotetramat in plants

Cited by 7 publications

References 14 publications

Distribution of Emamectin Benzoate Granules in Maize Plants by Broadcasting into Maize Leaf Whorls

Distribution of Emamectin Benzoate Granules in Maize Plants by Broadcasting into Maize Leaf Whorls

Bioactivity, Uptake, and Distribution of Prothioconazole Loaded on Fluorescent Double-Hollow Shelled Mesoporous Silica in Soybean Plants

Efficacy of drip irrigation with thiamethoxam on control of Monolepta hieroglyphica, and uptake, translocation and dietary risk of thiamethoxam in maize

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