Evaluation of the toxicity of 17 essential oils against <i>Choristoneura rosaceana</i> (Lepidoptera: Tortricidae) and <i>Trichoplusia ni</i> (Lepidoptera: Noctuidae)

Machial, Cristina M.; Shikano, Ikkei; Smirle, Michael J.; Bradbury, Roderick; Isman, Murray B.

doi:10.1002/ps.1988

Cited by 53 publications

(29 citation statements)

References 32 publications

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“…In studies of evaluating essential oils against lepidopteron larvae, patchouli oil was found to be the most toxic to oblique banded leafroller ( Choristoneura rosaceana ) larvae (LC 50 = 2.8 µl/ml and LD 50 = 8.0 µg/insect, whereas garlic oil was the most toxic to Trichoplusia ni larvae (LC 50 = 3.3 µl/ml and LD 50 = 22.7 µg/insect), followed by patchouli oil and lemongrass oil (Machial et al 2010). In another study, essential oils of Thymus vulgaris (LC 50 = 4.8 mg/ml), Syzygium aromaticum (LC 50 = 6.0 mg/ml), Cymbopogon citrates (LC 50 = 7.7 mg/ml), Cinnamomum cassia (LC 50 = 8.5 mg/ml), Cymbopogon nardus (LC 50 = 10.1 mg/ml) were found toxic to T. ni larvae in residual bioassays (Jiang et al 2010).…”

Section: Resultsmentioning

confidence: 99%

Chemical Composition and Larvicidal Activities of the Himalayan Cedar,Cedrus deodaraEssential Oil and Its Fractions Against the Diamondback Moth,Plutella xylostella

Chaudhary

Sharma

Nadda

et al. 2011

Journal of Insect Science

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Plants and plant-derived materials play an extremely important role in pest management programs. Essential oil from wood chips of Himalayan Cedar, Cedrus deodara (Roxburgh) Don (Pinales: Pinaceae), was obtained by hydrodistillation and fractionated to pentane and acetonitrile from which himachalenes and atlantones enriched fractions were isolated. A total of forty compounds were identified from these fractions using GC and GC-MS analyses. Essential oils and fractions were evaluated for insecticidal activities against second instars of the diamondback moth, Plutella xylostella L. (Lepidoptera: Yponomeutidae), using a leaf dip method. All samples showed promising larvicidal activity against larvae of P. xylostella. The pentane fraction was the most toxic with a LC50 value of 287 µg/ml. The himachalenes enriched fraction was more toxic (LC50 = 362 µg/ml) than the atlantones enriched fraction (LC50 = 365 µg/ml). LC50 of crude oil was 425 µg/ml and acetonitrile fraction was LC50 = 815 µg/ml. The major constituents, himachalenes and atlantones, likely accounted for the insecticidal action. Present bioassay results revealed the potential for essential oil and different constituents of C. deodara as botanical larvicides for their use in pest management.

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Section: Resultsmentioning

confidence: 99%

Chemical Composition and Larvicidal Activities of the Himalayan Cedar,Cedrus deodaraEssential Oil and Its Fractions Against the Diamondback Moth,Plutella xylostella

Chaudhary

Sharma

Nadda

et al. 2011

Journal of Insect Science

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“…Investigations of structureactivity relations have yielded little predictive value in this regard (Rice and Coats 1994;Tsao et al 1995). We recently screened 17 commercially available plant essential oils for contact toxicity to the cabbage looper and to the obliquebanded leafroller (Choristoneura rosaceana, Tortricidae), and important fruit pest in North America (Machial et al 2010). For the cabbage looper the most toxic oils were those from garlic (Allium sativum, Alliaceae), lemongrass (Cymbopogon nardus), and patchouli (Pogostemon cablin, Lamiaceae), whereas for the leafroller the most active oils were those from patchouli and thyme (Thymus vulgaris).…”

Section: Relationship Between Chemical Composition and Bioactivity Inmentioning

confidence: 99%

Commercial opportunities for pesticides based on plant essential oils in agriculture, industry and consumer products

2010

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In spite of intensive research on plant natural products and insect-plant chemical interactions over the past three decades, only two new types of botanical insecticides have been commercialized with any success in the past 15 years, those based on neem seed extracts (azadirachtin), and those based on plant essential oils. Certain plant essential oils, obtained through steam distillation and rich in monoand sesquiterpenes and related phenols, are widely used in the flavouring and fragrance industries and in aromatherapy. Some aromatic plants have traditionally been used for stored product protection, but the potential for development of pesticides from plant essential oils for use in a wide range of pest management applications has only recently been realized. Many plant essential oils and their major terpenoid constituents are neurotoxic to insects and mites and behaviourally active at sublethal concentrations. Most plant essential oils are complex mixtures. In our laboratory we have demonstrated that individual constituents of oils rarely account for a major share of the respective oil's toxicity. Further, our results suggest synergy among constituents, including among those that appear non-toxic in isolation. Repellent effects may be particularly useful in applications against public health and domestic pests, but may be useful in specific agricultural applications as well. In all of these applications, there is a premium on human and animal safety that takes priority over absolute efficacy. In agriculture, the main market niche for essential oil-based pesticides is in organic food production, at least in developed countries, where there are fewer competing pest management products. There is also scope for mixing these oils with conventional insecticides and for enhancing their efficacy with natural synergists. Some examples of field efficacy against agricultural pests are discussed.

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“…Variations in chemical composition owing to seasonal or geographic differences, growth conditions, and extraction methods for thyme (Thymus vulgaris L.) essential oil (Senatore 1996;Hudaib et al 2002;Asllani and Toska 2003) and lemongrass (Cymbopogon citratus Stapf.) essential oil (Zheljazkov et al 2011;Desai et al 2014;Moncada et al 2014) are well documented, along with their insecticidal activity (Lee et al 2001;Machial et al 2010;Jiang et al 2012), repellence (Diaz-Montano andTrumble 2013;Zhang et al 2013), and physiological impact such as insect larval growth or feeding deterrence (Hummelbrunner and Isman 2001;Jiang et al 2012) as well as acaricidal activity (Sertkaya et al 2010). Although many screening data highlighted the merit of both essential oils as insect control agents, understandings of the activities of individual constituents and their comparative contributions to the overall toxicity are vital in the considerations of candidate oils as for practical use (i.e., determinations of cultivation condition, commercialization, or quality control).…”

Section: Introductionmentioning

confidence: 99%

Contact, fumigant, and cytotoxic activities of thyme and lemongrass essential oils against larvae and an ovarian cell line of the cabbage looper, Trichoplusia ni

2015

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The chemical composition of a plant essential oil can be affected by many environmental and biological factors. Understanding the role of individual constituents as well as their interactions to the overall insecticidal bioactivity is prerequisite to the use of essential oils as an alternative to conventional insecticides. In the present study, the chemical compositions of plant essential oils obtained from Thymus vulgaris (thyme) and Cymbopogon citratus (lemongrass) were analyzed by gas chromatography/mass spectrometry, and the insecticidal and cytotoxic activities of individual constituents were evaluated against third instar larvae and an ovarian cell line of Trichoplusia ni. Thymol was the most abundant compound in thyme oil and the primary active constituent in contact and cytotoxicity tests, whereas p-cymene was the most effective compound for fumigant toxicity. In lemongrass oil, citral was identified as the major active and most abundant constituent. A weak correlation between insecticidal activity and cytotoxicity was observed, indicating limitation of the latter as a screening tool for novel insecticides. Although the evaporation of thymol was enhanced at higher temperatures, its contribution to fumigant activity was limited.

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Evaluation of the toxicity of 17 essential oils against Choristoneura rosaceana (Lepidoptera: Tortricidae) and Trichoplusia ni (Lepidoptera: Noctuidae)

Abstract: Based on these results, patchouli oil and other essential oils have sufficient efficacy to be considered as components of an essential oil-based insecticide that targets these lepidopteran pests.

Cited by 53 publications

References 32 publications

Chemical Composition and Larvicidal Activities of the Himalayan Cedar,Cedrus deodaraEssential Oil and Its Fractions Against the Diamondback Moth,Plutella xylostella

Chemical Composition and Larvicidal Activities of the Himalayan Cedar,Cedrus deodaraEssential Oil and Its Fractions Against the Diamondback Moth,Plutella xylostella

Commercial opportunities for pesticides based on plant essential oils in agriculture, industry and consumer products

Contact, fumigant, and cytotoxic activities of thyme and lemongrass essential oils against larvae and an ovarian cell line of the cabbage looper, Trichoplusia ni

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