Initial characterization of the vitellogenin receptor from a Psocoptera insect: Function analysis and RNA interference in Liposcelis entomophila (Enderlein)

Wang, Suisui; Miao, Shiyuan; Yang, Baofeng; Wang, Zhengyan; Liu, Qian; Wang, Ruidong; Du, Xiaobo; Ren, Yonglin; Lu, Yujie

doi:10.1016/j.jspr.2021.101803

Cited by 10 publications

(6 citation statements)

References 54 publications

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“…Experiments with cockroaches showed that the protected molecules (lipoplexes), formulated as liquid baits, in the cockroach digestive system successfully triggered lethal RNA interference. Recently, oral delivery-mediated RNAi was first used to silence the LeVgR gene in Liposcelis entomophila (Enderlein) (Psocoptera) [ 284 ]. The VgR gene may thus become an important potential target to disrupt insect reproduction for pest management through the oral delivery of dsRNA.…”

Section: Delivery Of Insecticides As Liquids (Admixtures Liquid Baits Aerosols Sprays Etc)mentioning

confidence: 99%

Synthetic and Natural Insecticides: Gas, Liquid, Gel and Solid Formulations for Stored-Product and Food-Industry Pest Control

Stejskal

Vendl

Aulický

et al. 2021

Insects

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The selective application of insecticides is one of the cornerstones of integrated pest management (IPM) and management strategies for pest resistance to insecticides. The present work provides a comprehensive overview of the traditional and new methods for the application of gas, liquid, gel, and solid physical insecticide formulations to control stored-product and food industry urban pests from the taxa Acarina, Blattodea, Coleoptera, Diptera, Hymenoptera, Lepidoptera, Psocoptera, and Zygentoma. Various definitions and concepts historically and currently used for various pesticide application formulations and methods are also described. This review demonstrates that new technological advances have sparked renewed research interest in the optimization of conventional methods such as insecticide aerosols, sprays, fumigants, and inert gases. Insect growth regulators/disruptors (IGRs/IGDs) are increasingly employed in baits, aerosols, residual treatments, and as spray-residual protectants for long-term stored-grain protection. Insecticide-impregnated hypoxic multilayer bags have been proven to be one of the most promising low-cost and safe methods for hermetic grain storage in developing countries. Insecticide-impregnated netting and food baits were originally developed for the control of urban/medical pests and have been recognized as an innovative technology for the protection of stored commodities. New biodegradable acaricide gel coatings and nets have been suggested for the protection of ham meat. Tablets and satchels represent a new approach for the application of botanicals. Many emerging technologies can be found in the form of impregnated protective packaging (insect growth regulators/disruptors (IGRs/IGDs), natural repellents), pheromone-based attracticides, electrostatic dust or sprays, nanoparticles, edible artificial sweeteners, hydrogels, inert baits with synthetic attractants, biodegradable encapsulations of active ingredients, and cyanogenic protective grain coatings. Smart pest control technologies based on RNA-based gene silencing compounds incorporated into food baits stand at the forefront of current strategic research. Inert gases and dust (diatomaceous earth) are positive examples of alternatives to synthetic pesticide products, for which methods of application and their integration with other methods have been proposed and implemented in practice. Although many promising laboratory studies have been conducted on the biological activity of natural botanical insecticides, published studies demonstrating their effective industrial field usage in grain stores and food production facilities are scarce. This review shows that the current problems associated with the application of some natural botanical insecticides (e.g., sorption, stability, field efficacy, and smell) to some extent echo problems that were frequently encountered and addressed almost 100 years ago during the transition from ancient to modern classical chemical pest control methods.

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Section: Delivery Of Insecticides As Liquids (Admixtures Liquid Baits Aerosols Sprays Etc)mentioning

confidence: 99%

Synthetic and Natural Insecticides: Gas, Liquid, Gel and Solid Formulations for Stored-Product and Food-Industry Pest Control

Stejskal

Vendl

Aulický

et al. 2021

Insects

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“…In S. exigua , Vg ( SeVg ) and Vg receptor ( SeVgR ) are the key genes associated with yolk synthesis and accumulation. Vg is the main nutrient for egg development in pests, and the vitellogenin receptor plays a key role in the uptake of SeVg by oocytes and transport to the ovary ( Zhao et al, 2018 ; Thomas et al, 2020 ; Hafeez et al, 2021 ; Wang et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

The main component of the aphid alarm pheromone (E)-β-farnesene affects the growth and development of Spodoptera exigua by mediating juvenile hormone-related genes

Sun

Zhang

et al. 2022

Front. Plant Sci.

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The (E)-β-farnesene (EβF) is one of the most important secondary metabolites in some plants and provides indirect defense against aphids. However, the direct effect of EβF against pests is still unclear. In this study, various concentrations of EβF (0.16, 0.8, and 4 g/kg) were provided in an artificial diet to determine the direct effects of EβF on Spodoptera exigua. The results showed that an artificial diet containing 4 g/kg of EβF reduced the final survival of the S. exigua larvae and per female fecundity of adults significantly when compared with CK and SC controls (p < 0.05), then ultimately it also significantly affected the intrinsic rate of increase (p < 0.05). Furthermore, the results of the EβF bioassay in an artificial diet also indicated that the proliferation of the S. exigua population was inhibited by the ingestion of EβF in a dose-dependent manner. Combined differential RNA-seq data and RT-qPCR analysis, it was found that four key genes involved in juvenile hormone degradation significantly upregulated in S. exigua larvae treated by EβF at a dose of 0.8 and 4 g/kg when compared with two controls (p < 0.05). This indicated that EβF could disturb the normal function of juvenile hormones and reduce the survival rate of S. exigua larvae. Additionally, two key genes that regulate per fecundity of S. exigua females, including SeVg and SeVgR, were significantly downregulated in adult females (p < 0.05) when they were treated with 0.8 and 4 g/kg of EβF at the larval stage, relative to the expression of these genes after treatment with controls. These findings suggested that EβF first disturbed the normal function of juvenile hormone by upregulating key degradation genes, and then inhibited the expression of SeVg/SeVgR genes and proteins, thus reducing the population size of S. exigua by increasing larval mortality and inhibiting per female fecundity.

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“…The current baits mainly contain relatively nonrepellent, slow-acting compounds [ 90 , 92 , 93 , 94 ]. Most recently, the development of bait technologies for liquid baits with liposomes as carriers of dsRNA has been suggested by several research teams [ 95 , 96 ]. In recent decades, a new generation of attractive (synthetic or natural) baits or gel-based baits, frequently hydrophilic, has been established.…”

Section: Gels Baits For Control Of Ants Cockroaches and Other Urban P...mentioning

confidence: 99%

“…Although the results are still in the research stage, they do not look pessimistic. For example, a substantially new generation of bait technologies for liquid baits with liposomes as carriers of dsRNA has been suggested by several research teams [ 95 , 96 ]. Specifically, a new method was developed [ 95 ] which uses liposome vesicles (so-called dsRNA lipoplexes) as carriers of dsRNA molecules.…”

Section: Outlooks and Perspectivesmentioning

confidence: 99%

“…Laboratory tests showed that the protected molecules (lipoplexes), formulated as liquid or gel baits, may trigger lethal RNA interference in the cockroach digestive system. Oral-delivery-mediated RNAi was first used to silence the LeVgR gene in Liposcelis entomophila (Enderlein) [ 96 ]. The VgR gene may thus become an important potential target for disrupting insect reproduction for pest management through the oral delivery of dsRNA.…”

Section: Outlooks and Perspectivesmentioning

confidence: 99%

See 1 more Smart Citation

Gel Carriers for Plant Extracts and Synthetic Pesticides in Rodent and Arthropod Pest Control: An Overview

Shah

Vendl

Aulický

et al. 2022

Gels

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Insecticides and rodenticides form the basis of integrated pest management systems worldwide. As pest resistance continues to increase and entire groups of chemical active ingredients are restricted or banned, manufacturers are looking for new options for more effective formulations and safer application methods for the remaining pesticide ingredients. In addition to new technological adaptations of mainstream formulations in the form of sprays, fumigants, and dusts, the use of gel formulations is becoming increasingly explored and employed. This article summarizes information on the current and potential use of gel (including hydrogel) and paste formulations against harmful arthropods or rodents in specific branches of pest management in the agricultural, food, stored product, structural wood, urban, medical, and public health areas. Due to the worldwide high interest in natural substances, part of the review was devoted to the use of gels for the formulation of pesticide substances of botanical origin, such as essential or edible oils. Gels as emerging formulation of so called “smart insecticides” based on molecular iRNA disruptors are discussed.

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Initial characterization of the vitellogenin receptor from a Psocoptera insect: Function analysis and RNA interference in Liposcelis entomophila (Enderlein)

Cited by 10 publications

References 54 publications

Synthetic and Natural Insecticides: Gas, Liquid, Gel and Solid Formulations for Stored-Product and Food-Industry Pest Control

Synthetic and Natural Insecticides: Gas, Liquid, Gel and Solid Formulations for Stored-Product and Food-Industry Pest Control

The main component of the aphid alarm pheromone (E)-β-farnesene affects the growth and development of Spodoptera exigua by mediating juvenile hormone-related genes

Gel Carriers for Plant Extracts and Synthetic Pesticides in Rodent and Arthropod Pest Control: An Overview

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