Biopesticidal Potential of Nerolidol, a Sesquiterpene Compound, and its Drastic Impact on Growth and Metamorphosis of the Cotton Leafworm Spodoptera littoralis (Lepidoptera: Noctuidae)

Ghoneim, Karem; Hamadah, Kh.; Selim, Shady; Waheeb, H

doi:10.36347/sajb.2021.v09i02.004

Cited by 7 publications

(2 citation statements)

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“…In insects, the disturbing development or metamorphosis program can be indicated by failure of ecdysis of larvae or the production of extra moult, superlarva, permanent larvae, larval-pupal, or/and pupal-adult intermediates. All or some of these symptoms or features had been recorded for certain insects by some plant-derived compounds (Kaur et al, 2014;Palanikumar et al, 2017), such asthe confused flour beetle Triboliumconfusum after treatment with Andrographolide (Lingampally et al, 2013), S. litura after treatment with Andrographolide (Edwin et al, 2016), S. littoralis after treatment with farnesol (Ghoneim et al, 2020) or nerolidol (Ghoneim et al, 2021). As far as our literature survey could ascertain, no information was available on the impairing effects of PGRs on the development or metamorphosis program.…”

Section: Disturbed Metamorphosis and Morphogenesis Programsof G Mellonella By Iaamentioning

confidence: 99%

“…Apart from PGRs, different plant products or plant-derived compounds hindered the pupation process of various insect species (Jilani et al, 2006;Kaur et al, 2010;Kaur et al, 2017;Gupta et al, 2017), such as S. frugiperda after treatment with eucalyptin, chrysin, eucalyptin, quercetin, luteolin, and betulinic and oleanolic acids (Salazar et al, 2015); S. litura after feeding of 3 rd instar larvae on diet mixed with alantolactone and isoalantolactone (Kaur et al, 2017) and S. littoralis after larval treatment with Farnesol (Ghoneim et al, 2020) or Nerolidol (Ghoneim et al, 2021).…”

Section: Inhibited Pupationmentioning

confidence: 99%

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Toxicity and Bio-Efficacy of Indole-3-Acetic Acid, A Plant Growth Regulator, Against the Greater Wax Moth, Galleria mellonella Linnaeus (Lepidoptera: Pyralidae)

Ghoneim

Hamadah

El‐Hela

2021

Egyptian Academic Journal of Biological Sciences. A, Entomology

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The greater wax moth Galleria mellonella L. is a dangerous pest for the apiculture industry in the world. The objective of the present study was to evaluate the insecticidal activity of the auxin plant growth regulator, Indole-3-acetic acid (IAA), against G. mellonella and its effect on the growth, development, metamorphosis and morphogenesis of this insect pest. The 3 rd instar larvae were force-fed on an artificial diet supplemented with six concentrations, viz., 100, 10.0, 1.0, 0.1, 0.01 & 0.001ppm of IAA. The most important results could be summarized as follows. IAA exhibited the strongest acute toxicity on larvae at the higher two concentrations. At other concentrations, various degrees of toxicity on larvae were found in a dose-dependent course. No pupae or adults were produced at the higher two concentrations. IAA failed to display chronic toxicity on the developed pupae. All emerged adults died at 1.00ppm of IAA but no adult mortality was observed at the three lower concentrations. LC50 value was calculated in 0.24 ppm. IAA enhanced the treated larvae to grow with increasing weight gain. Also, it promoted the treated larvae, since the growth rate increased with the increasing concentration. IAA exhibited a retarding effect on the pupation, only at the higher two concentrations. The larval and pupal durations were significantly prolonged, in a dose-dependent manner. On the other hand, IAA failed to disturb the hormonal regulation of the development program, since no intermediate creatures were produced. Also, it failed to disrupt the pupal morphogenesis, since no pupal deformities had been observed.

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Section: Disturbed Metamorphosis and Morphogenesis Programsof G Mellonella By Iaamentioning

confidence: 99%

Section: Inhibited Pupationmentioning

confidence: 99%

Toxicity and Bio-Efficacy of Indole-3-Acetic Acid, A Plant Growth Regulator, Against the Greater Wax Moth, Galleria mellonella Linnaeus (Lepidoptera: Pyralidae)

Ghoneim

Hamadah

El‐Hela

2021

Egyptian Academic Journal of Biological Sciences. A, Entomology

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Elucidating the molecular mechanisms of essential oils' insecticidal action using a novel cheminformatics protocol

Correa

Carvalho

Oliveira

et al. 2023

Sci Rep

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Essential oils (EOs) are a promising source for novel environmentally safe insecticides. However, the structural diversity of their compounds poses challenges to accurately elucidate their biological mechanisms of action. We present a new chemoinformatics methodology aimed at predicting the impact of essential oil (EO) compounds on the molecular targets of commercial insecticides. Our approach merges virtual screening, chemoinformatics, and machine learning to identify custom signatures and reference molecule clusters. By assigning a molecule to a cluster, we can determine its most likely interaction targets. Our findings reveal that the main targets of EOs are juvenile hormone-specific proteins (JHBP and MET) and octopamine receptor agonists (OctpRago). Three of the twenty clusters show strong similarities to the juvenile hormone, steroids, and biogenic amines. For instance, the methodology successfully identified E-Nerolidol, for which literature points indications of disrupting insect metamorphosis and neurochemistry, as a potential insecticide in these pathways. We validated the predictions through experimental bioassays, observing symptoms in blowflies that were consistent with the computational results. This new approach sheds a higher light on the ways of action of EO compounds in nature and biotechnology. It also opens new possibilities for understanding how molecules can interfere with biological systems and has broad implications for areas such as drug design.

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Adult food and species type influence the nutritional physiology and tolerance of two flour beetles to the extract of Dennettia tripetala (G. Baker)

Oyeniyi,

Omotoso,

Barbosa

et al. 2024

Physiological Entomology

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Tribolium castaneum (Herbst) and Tribolium confusum (Jacquelin du Val) are common and damaging pests of stored grain flours in several homes and flour mill industries worldwide. This study examines how food, species, concentration, and exposure time affect the susceptibility and nutritional physiology of T. castaneum and T. confusum when exposed to partially purified methanolic fruit extract of Dennettia tripetala (G. Baker) and two of its major active compounds (linalool and 2‐phenylnitroethane). Gas chromatography–mass spectrometry was used to evaluate the chemical profile of the partially purified plant extract. Thirty‐two compounds were found in the plant, including established insecticidal and insectifuge compounds such as linalool, cis‐vaccenic acid, 2‐phenylnitroethane, and linoleic acid, among others. The interactions among the factors have a differential impact on the susceptibility and nutritional indices of both Tribolium species to D. tripetala, linalool and 2‐phenylnitroethane. According to LC50 values, linalool and 2‐phenylnitroethane were the most and least toxic to both beetles, respectively. With increasing extract concentrations, all nutritional indices except feeding deterrence decreased. Relative to controls, linalool and 2‐phenylnitroethane evoked the highest and least reduction, respectively, in beetles' nutritional indices. Treated corn discs deterred both species over treated wheat discs, regardless of insecticide type. T. castaneum had a higher overall food consumption than T. confusum. Regardless of insecticide type, the relative growth rate was higher in T. confusum and T. castaneum fed with treated corn and wheat discs, respectively. D. tripetala extract, linalool, and 2‐phenylnitroethane showed higher post‐ingestion toxicity to T. castaneum than T. confusum. This study emphasises the importance of certain intrinsic factors, like beetles' species and cereal food types, when managing Tribolium species with plant‐based insecticides. The various data obtained from this study will help researchers and pesticide manufacturers formulate effective biopesticides from linalool and 2‐phenylnitroethane to control Tribolium species on corn and wheat flours.

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Biopesticidal Potential of Nerolidol, a Sesquiterpene Compound, and its Drastic Impact on Growth and Metamorphosis of the Cotton Leafworm Spodoptera littoralis (Lepidoptera: Noctuidae)

Cited by 7 publications

References 0 publications

Toxicity and Bio-Efficacy of Indole-3-Acetic Acid, A Plant Growth Regulator, Against the Greater Wax Moth, Galleria mellonella Linnaeus (Lepidoptera: Pyralidae)

Toxicity and Bio-Efficacy of Indole-3-Acetic Acid, A Plant Growth Regulator, Against the Greater Wax Moth, Galleria mellonella Linnaeus (Lepidoptera: Pyralidae)

Elucidating the molecular mechanisms of essential oils' insecticidal action using a novel cheminformatics protocol

Adult food and species type influence the nutritional physiology and tolerance of two flour beetles to the extract of Dennettia tripetala (G. Baker)

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