Effect of Plant Essential Oils and Their Major Constituents on Cypermethrin Tolerance Associated Detoxification Enzyme Activities in Spodoptera litura (Lepidoptera: Noctuidae)

2019 ◽  
Vol 112 (5) ◽  
pp. 2167-2176 ◽  
Author(s):  
Torranis Ruttanaphan ◽  
Wanchai Pluempanupat ◽  
Chutikan Aungsirisawat ◽  
Polnarong Boonyarit ◽  
Gaelle Le Goff ◽  
...  
Keyword(s):  
Essential Oil ◽  
Synergistic Effect ◽  
Essential Oils ◽  
Spodoptera Litura ◽  
Cytochromes P450 ◽  
Detoxification Enzymes ◽  
Plant Essential Oils ◽  
Activity Measurements ◽  
Lepidoptera Noctuidae ◽  
Essential Oil Compounds

Abstract Essential oils are well known to act as biopesticides. This research evaluated the acute toxicity and synergistic effect of essential oil compounds in combination with cypermethrin against Spodoptera litura Fabricius (Lepidoptera: Noctuidae). The effects of distillation extracts of essential oils from Alpinia galanga Zingiberaceae (Zingiberales) rhizomes and Ocimum basilicum Lamiaceae (Lamiales) leaves; one of their primary essential oil compounds 1,8-cineole; and linalool were studied on second-instar S. litura by topical application under laboratory conditions. The results showed that A. galanga had the highest control efficiency, whereas1,8-cineole provided a moderate efficacy. The mixtures of linalool, 1,8-cineole, O. basilicum, or A. galanga with cypermethrin were synergistic on mortality. Activity measurements of the main detoxification enzymes show that linalool and 1,8-cineole inhibit the activity of cytochromes P450 and carboxylesterases, which could explain their synergistic effect. Based on our results, the use of these mixtures represents an ideal eco-friendly approach, helping to manage cypermethrin resistance of S. litura.

scholarly journals Essential Oil Compounds for Thrips Control – a Review

2008 ◽  
Vol 3 (7) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Elisabeth H. Koschier
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Host Selection ◽  
Selection Process ◽  
Control Strategies ◽  
Interesting Case ◽  
Botanical Insecticides ◽  
Pest Species ◽  
Plant Essential Oils ◽  
Essential Oil Compounds

This review covers aspects of putting essential oil compounds to use either as allelochemicals that manipulate the host selection process of Thysanopteran pest species or as botanical insecticides that kill these pests. Thysanoptera (thrips) make an especially interesting case study in this field, because their increasing economic impact puts some urgency on the development of novel control strategies, especially strategies that incorporate natural compounds. Known facts about the host selection behaviour of thrips are briefly summarized, and methods for the evaluation of thrips responses to volatile and non-volatile plant compounds are outlined. Recent results on the search for attractive and repellent volatiles and for feeding and/or oviposition deterrent essential oil compounds are listed in detail and their potential for use in control strategies against thrips pests is discussed. An overview of plant essential oils used either for insecticidal spraying treatments of crops or for fumigation of crops in greenhouses or fumigation chambers completes the picture of bioactivities. Finally, an outlook on the perspectives for future control strategies against thrips pests is given, including thoughts on the direction of further research needed to fully evaluate the thrips control potential of plant essential oils.

scholarly journals Anti-biofilm and Virulence Factor-Reducing Activities of Essential Oils and Oil Components as a Possible Option for Bacterial Infection Control

Planta Medica ◽  
2020 ◽  
Vol 86 (08) ◽  
pp. 520-537 ◽  
Author(s):  
Jürgen Reichling
Keyword(s):  
Quorum Sensing ◽  
Essential Oil ◽  
Essential Oils ◽  
Virulence Factor ◽  
Model Organisms ◽  
Regulation System ◽  
Expression Of Genes ◽  
Reporter Strains ◽  
Violacein Production ◽  
Essential Oil Compounds

AbstractPathogenic biofilm-associated bacteria that adhere to biological or nonbiological surfaces are a big challenge to the healthcare and food industries. Antibiotics or disinfectants often fail in an attempt to eliminate biofilms from those surfaces. Based on selected experimental research, this review deals with the potential biofilm-inhibiting, virulence factor-reducing, and biofilm-eradicating activities of essential oils and single essential oil compounds using Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Chromobacterium violaceum as model organisms. In addition, for the bacteria reviewed in this overview, different essential oils and essential oil compounds were reported to be able to modulate the expression of genes that are involved in the formation of autoinducer molecules, biofilms, and virulence factors. The anti-quorum sensing activity of some essential oils and single essential oil compounds was demonstrated using the gram-negative bacterium C. violaceum. Reporter strains of this bacterium produce the violet-colored compound violacein whose synthesis is regulated by quorum sensing autoinducer molecules called acylhomeserinlactones. Of great interest was the discovery that enantiomeric monoterpenes affected the quorum sensing regulation system in different ways. While the (+)-enantiomers of carvone, limonene, and borneol increased violacein formation, their (−)-analogues inhibited violacein production.For the successful eradication of biofilms and the bacteria living inside them, it is absolutely necessary that the lipophilic volatile substances can penetrate into the aqueous channels of biofilms. As shown in recent work, hydrophilic nano-delivery systems encapsulating essential oils/essential oil compounds with antibacterial effects may contribute to overcome this problem.

Research Progress of Essential Oil as a New Complementary Therapy in the Treatment of Depression

2021 ◽  
Vol 21 ◽  
Author(s):  
Xinli Liang ◽  
Xinli Wang ◽  
Guowei Zhao ◽  
Xiaoying Huang ◽  
Xiqiang Xu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Mental Disease ◽  
Complementary Therapy ◽  
Scientific Basis ◽  
Research Progress ◽  
Chemical Components ◽  
Physical And Mental Health ◽  
Plant Essential Oils ◽  
Treatment Of Depression

: Depression is a mood disorder or affective disorder disease with depression as the main symptom. It has become a kind of mental disease that cannot be ignored in the world that seriously endangers human physical and mental health. Antidepressants commonly used in clinics generally have some defects including slow action, unremarkable effects and large side-effects. Therefore, there has a huge developing space for the research of new and effective therapeutic drugs to supplement or replace traditional drugs. Essential oil has obvious advantages in the treatment of depression and other emotional diseases, its aromatic odor can directly stimulate the olfactory nerves, and the lipophilic small- molecular compounds can cross the blood-brain barrier easily, to play its regulatory role of releasing of neurotransmitters and hormones related to depression, or adjusting the expression of brain-derived neurotrophic factor and proinflammatory cytokines. The pathogenesis of depression and the problems in traditional medication was illustrated, the research on the antidepressant effects and mechanism of essential oils in recent years was summarized and the antidepressant chemical components in plant essential oils were reviewed in this article. It could provide scientific basis for essential oil to be a new choice for relieving depression and treating depression.

High toxicity of camphene and γ-elemene from Wedelia prostrata essential oil against larvae of Spodoptera litura (Lepidoptera: Noctuidae)

2017 ◽  
Vol 25 (11) ◽  
pp. 10383-10391 ◽  
Author(s):  
Giovanni Benelli ◽  
Marimuthu Govindarajan ◽  
Mohamad S. AlSalhi ◽  
Sandhanasamy Devanesan ◽  
Filippo Maggi
Keyword(s):  
Essential Oil ◽  
Spodoptera Litura ◽  
High Toxicity ◽  
Lepidoptera Noctuidae ◽  
Wedelia Prostrata

scholarly journals Essential Oils from Indigenous Iranian Plants: A Natural Weapon vs. Multidrug-Resistant Escherichia coli

2022 ◽  
Vol 10 (1) ◽  
pp. 109
Author(s):  
Mohammadreza Pajohi Alamoti ◽  
Behnaz Bazargani-Gilani ◽  
Razzagh Mahmoudi ◽  
Anna Reale ◽  
Babak Pakbin ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Essential Oil ◽  
Essential Oils ◽  
Antimicrobial Properties ◽  
Multidrug Resistant ◽  
Zataria Multiflora ◽  
Cuminum Cyminum ◽  
Plant Essential Oils ◽  
E Coli ◽  
Mentha Longifolia

Aim of this study was to investigate the antimicrobial properties of herbal plant essential oils (EOs) from selected Iranian plant species such as Ferulago angulata, Zataria multiflora, Cuminum cyminum, and Mentha longifolia against antibiotic-resistant Escherichia coli (E. coli) strains. For this purpose, the Escherichia coli strains, isolated from raw cow’s milk and local dairy products (yogurt, cream, whey, cheese, and confectionery products) collected from different areas of Hamedan province, Iran, were investigated for their resistance to antibiotics (i.e., streptomycin, tetracycline, gentamicin, chloramphenicol, ciprofloxacin, and cefixime). Thus, the E. coli strains were tested for their susceptibility to the above-mentioned essential oils. Regarding antibiotics, the E. coli strains were highly sensitive to ciprofloxacin. In relation to essential oils, the most effective antibacterial activity was observed with Zataria multiflora; also, the bacteria were semi-sensitive to Cuminum cyminum and Mentha longifolia essential oils. All strains were resistant to Ferulago angulata essential oil. According to the results, the essential oil of Zataria multiflora can be considered as a practical and alternative antibacterial strategy to inhibit the growth of multidrug-resistant E. coli of dairy origin.

scholarly journals Antifeedant and larvicidal activities of leaf essential oils from Hyptis suaveolens (L.) Poit., Chromolaena odorata (L.) R.M. King and Lantana camara L. against Spodoptera litura Fab. (Lepidoptera: Noctuidae)

2020 ◽  
Vol 3 (4) ◽  
pp. 244-251
Author(s):  
Hung Thanh Tran ◽  
My-Ngan Thi Luong ◽  
Le Van Bui ◽  
Hieu Trung Tran
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Spodoptera Litura ◽  
Ipomoea Batatas ◽  
Pupal Stage ◽  
Lantana Camara ◽  
Volatile Components ◽  
Chromolaena Odorata ◽  
Hyptis Suaveolens ◽  
Larvicidal Activities

The current study was carried out to evaluate antifeedant and insecticidal activities of three essential oils from leaves of Hyptis suaveolens, Chromolaena odorata and Lantana camara against fourth instar larvae of Spodoptera litura under the laboratory conditions. Results indicated that the essential oil from leaves of Hyptis suaveolens had a strong antifeedant impact on the larvae with antifeedant index (AI) of 75.4, 88.5 and 92.9 when leaf disks of Ipomoea batatas were treated with the essential oil at concentration of 1.5, 2.0 and 2.5 %, respectively. Also dose dependent mortalities were observed in the larvae topical treated with the essential oil at different concentrations. At the treated concentration of 0.4 mg per each larva, 68.3 % of the larvae were killed after 24 hours, and 25.0 % were died at the pupal stage after 30 days of observation. At the concentration of 1.2 mg/larva, 93.3 % of the larvae were killed after 24 hours, and no emergence of adults was recorded after 30 days of observation. Larvicidal activity of the H. suaveolens essential oil (with the lethal doses LD50=0.16 and LD95=1.52 mg/larva) was stronger than those of the C. odorata and L. camara essential oils (with LD50=0.57–0.63 and LD95=4.64–4.97 mg/larva) after 24 hour of treatment. GC–MS analysis indicates that the major volatile components of the essential oil from leaves of H. suaveolens are composed of b-caryophyllene (30.0 %), eucalyptol (12.0 %), copaene (5.9 %), and a-bergamotene (5.7 %). This essential oil needs to be further investigated and used as a bio-insecticide for control of S. litura.  

Insecticidal toxicity of thirteen commercial plant essential oils against Spodoptera exigua (Lepidoptera: Noctuidae)

2018 ◽  
Vol 46 (2) ◽  
pp. 233-245 ◽  
Author(s):  
Ana Murcia-Meseguer ◽  
Thiago J. S. Alves ◽  
Flor Budia ◽  
Antonio Ortiz ◽  
Pilar Medina
Keyword(s):  
Essential Oils ◽  
Spodoptera Exigua ◽  
Plant Essential Oils ◽  
Commercial Plant ◽  
Insecticidal Toxicity ◽  
Lepidoptera Noctuidae
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