The application of essential oils as a next-generation of pesticides: recent developments and future perspectives

Fierăscu, Radu Claudiu; Fierascu, Ioana Catalina; Dinu-Pîrvu, Cristina-Elena; Fierăscu, Irina; Păunescu, Alina

doi:10.1515/znc-2019-0160

Cited by 53 publications

(37 citation statements)

References 115 publications

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“…In addition, in AgNPs spectra, there are bands not found in the extract spectrum: at 1406, 1021 and 840 cm -1 , bands specific for the presence of silver. 40 Shifted peaks were also observed in the FTIR spectra of AgNPs synthesized from the tea leaf extract: from 3420 to 3371 cm -1 due to N-H stretching amides, from 2931 to 2925 cm -1 due to C-H stretching alkanes, from 1383 to 1371 cm -1 for hydroxyl groups and from 1051 to 1044 cm -1 for C-stretching from ether groups. In the AgNPs, new peaks were observed at 1695, 1452, 1241, and 926 cm -1 related to alkene groups (C-C stretching), tertiary ammonium ions, polyphenols, aliphatic amines (C-N stretching vibrations) and alkene groups (C-H stretching).…”

Section: Ftir Spectroscopymentioning

confidence: 86%

Biosynthesis, characterisation and therapeutic applications of plant-mediated silver nanoparticles

Corciovă

Ivănescu

2018

JSCS

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Nanotechnology is one of the most studied domains, and nanoparticle synthesis, especially of silver nanoparticles, has gained special importance due to their properties, biocompatibility and applications. Today, the processes of nanoparticles synthesis tend toward the development of inexpensive, simple, non-toxic and environmentally friendly methods. Thus, the use of plants in the synthesis of silver nanoparticles has attracted considerable interest because biomolecules can act as both reducing and stabilizing agents. This survey aims at discussing the conditions for obtaining silver nanoparticles using plants and their characterization by several methods, such as FTIR and UV-Vis spectroscopy, X-ray diffraction, and scanning and transmission electron microscopy. In addition, it examines some of the most common biological uses of silver nanoparticles: antibacterial, antioxidant and cytotoxic.

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Section: Ftir Spectroscopymentioning

confidence: 86%

Biosynthesis, characterisation and therapeutic applications of plant-mediated silver nanoparticles

Corciovă

Ivănescu

2018

JSCS

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“…This mechanism affects the phase I metabolism of xenobiotics, which is responsible for inactivating the insecticides. EOs also exert repellent activity, blocking the odour receptor neurons (ORNs) of the insects [ 17 , 33 , 80 ].…”

Section: Discussionmentioning

confidence: 99%

Piper aduncum essential oil: a promising insecticide, acaricide and antiparasitic. A review

et al. 2021

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Several studies have assessed the potential of essential oils as substitutes for synthetic pesticides, in order to counter insect resistance to commercial pesticides. Piper aduncum L. is a very common shrub in the Amazon Rainforest and in other subtropical areas. The objective of this review was to analyse the existing information on P. aduncum essential oil as a raw material for new bioproducts for sustainable pest disease management. With this review, we collected and critically analysed 59 papers, representing all the studies that aimed to evaluate the essential oil properties of this species as an insecticide, acaricide and antiparasitic. The chemical composition differs depending on the origin, although phenylpropanoid dillapiole is the most cited component, followed by myristicin, 1,8-cineole and β-ocimene. Between the acaricidal, antiparasitic and synergistic activities, the insecticidal effects are highly promising, with optimal results against the malaria vector Aedes aegypti, with an LC50 that ranges between 57 and 200μg/mL. Acaricidal activity has mainly been reported against Tetranychus urticae, showing an LC50 that ranges between 5.83 and 7.17μg/mL. Antiparasitic activity has predominately been found on Leishmania amazonensis, and antipromastigote activity has been found to be between 23.8 and 25.9μg/mL. Concerning the synergistic effect between dillapiole and synthetic insecticides, four studies on Spodoptera frugiperda found promising results with cypermethrin. In this review, we highlighted the potential of P. aduncum essential oil as a biopesticide, also focusing on the lack of information about applied research. We also provide suggestions for future investigations.

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“…Essential oils (Eos), which are the secondary metabolites of plants, are composed of a complex and unique mixture of compounds and were shown to have insecticide, insect repellent, nematicide, and acaricide properties [61]. Direct toxicity of essential oils as insecticides may come from their neurotoxic effects through the inhibition of acetylcholinesterase, blocking the octopamine receptors [62] or by blocking the γ‐aminobutyric acid (GABA) receptor [63].…”

Section: Next‐generation Pesticidesmentioning

confidence: 99%

Are insect GPCRs ideal next‐generation pesticides: opportunities and challenges

et al. 2021

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The increasing human population, combined with low inefficiency and adverse effects of available pesticides, has magnified the urgent need of developing next-generation pesticides. Among the available approaches, strategies targeting invertebrate G protein-coupled receptors (GPCRs) are very promising as these receptors are the targets of endogenous neuropeptides/neuromodulators that upon binding to their receptors induce profound changes in insect physiology. Therefore, exploring GPCR regulators has great potential in the development of targeted next-generation pesticides. Despite the great potential of such alternative pesticides, so far there has been only one approved compound, Amitraz, which conveys its antipest activity via the GPCR Octopamine receptor. Here, we review the current status of pesticide development, hazards associated with conventional pesticide compounds, alternative strategies that involve next-generation of pesticides, structural features of GPCRs, and opportunities and challenges of targeting the members of this superfamily in invertebrates to develop anti-pest agents. In conclusion, we emphasize that the potential of GPCRs cannot be utilized in full without more genomic and transcriptomic data to improve our understanding of the complex network of peptidergic signaling pathways. We argue how vital it is to obtain three-dimensional (3D) structural data on physiologically important target GPCRs and encourage the readers to use the state of the art in silico methods such as virtual screening for the discovery of new pesticide compounds.

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The application of essential oils as a next-generation of pesticides: recent developments and future perspectives

Cited by 53 publications

References 115 publications

Biosynthesis, characterisation and therapeutic applications of plant-mediated silver nanoparticles

Biosynthesis, characterisation and therapeutic applications of plant-mediated silver nanoparticles

Piper aduncum essential oil: a promising insecticide, acaricide and antiparasitic. A review

Are insect GPCRs ideal next‐generation pesticides: opportunities and challenges

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