Repellency, toxicity, and anti-oviposition of essential oil of Gardenia jasminoides and its four major chemical components against whiteflies and mites

Wagan, Tufail Ahmed; Cai, Wanlun; Hua, Hongxia

doi:10.1038/s41598-018-27366-5

Cited by 34 publications

(23 citation statements)

References 17 publications

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“…Wagan et al . reported that squalene showed maximum repellency against whitefly adults at 24 (89.59%) and 48‐h (84.76%) post‐treatment in the glasshouse experiments.…”

Section: Resultsmentioning

confidence: 99%

Bioassay guided isolation of mosquito biting deterrent compounds from Strumpfia maritima

Alı

Zaki

Parveen

et al. 2020

Pest Management Science

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BACKGROUND: In our natural products screening program against mosquitoes, we screened ethanolic extract of Strumpfia maritima Jacq. which showed high biting deterrent activity in Klun and Debboun (K&D) bioassays against Aedes aegypti L. Through bioguided fractionation we isolated six compounds from the active fractions. The extract and pure compounds were evaluated for larvicidal and biting deterrent activity against Aedes aegypti.RESULTS: Ethanolic extract with proportion not biting (PNB) value of 0.8 ± 0.08 provided biting deterrent activity similar to N,N-dimethyl-m-toluamide (DEET) (PNB = 0.9 ± 0.05) against Ae. aegypti. Five out of eight fractions, prepared through bioassay-guided fractionation, showed biting deterrent activity similar to DEET. Six compounds were isolated from active fractions and characterized as squalene, ursolic acid, betulonic acid, cabraleone, ursolic acid acetate, and 27-p-Ecoumaroyloxyursolic acid. The biting deterrent activity of ursolic acid acetate (biting deterrence index, BDI = 0.85), cabraleone (BDI = 0.79), and ursolic acid (BDI = 0.78) was similar to DEET against Ae. aegypti. Strumpfia maritima extract did not show larvicidal activity at the highest screening dose of 125 ppm in the larvicidal bioassay.CONCLUSION: The ethanolic extract and pure compounds showed biting deterrent activity against Ae. aegypti. The high biting deterrent activity of ursolic acid acetate and cabraleone indicated a great potential for these natural compounds to be developed as mosquito repellents.

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“…Wagan et al . reported that squalene showed maximum repellency against whitefly adults at 24 (89.59%) and 48‐h (84.76%) post‐treatment in the glasshouse experiments.…”

Section: Resultsmentioning

confidence: 99%

Bioassay guided isolation of mosquito biting deterrent compounds from Strumpfia maritima

Alı

Zaki

Parveen

et al. 2020

Pest Management Science

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“…Lee et al (2019) reported the production of Dibutyl succinate (Dibutyl butanedioate) by I. javanica that showed insecticidal activity against Myzus persicae and inhibitory activity against a fungal pathogen Colletotrichum acutatum. Wagan et al (2018) reported that squalene showed repellent activity against B. tabaci adults and insecticidal activity against B. tabaci nymphs and Tetranychus urticae (two-spotted spider mite). The production of lauric acid as the major compound by an entomopathogenic strain of Aspergillus flavus which is effective against teak defoliator (Hyblaea purea) has been reported (Senthilkumar et al 2014).…”

Section: Resultsmentioning

confidence: 99%

Efficacy of an Omani strain ofCordyceps javanicaand its culture filtrate against whitefly (Bemisia tabaci) under laboratory conditions

et al. 2020

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In this study, an entomopathogenic fungus was isolated from whitefly (Bemisia tabaci) cadaver samples collected from eggplant fields in Barka, Oman. The fungus was identified as Cordyceps javanica based on sequence analysis of ribosomal DNA internal transcribed spacer (ITS) regions. Under in vitro conditions, the fungus was able to grow between 20°C and 30°C, with a maximum growth at 30°C. No growth occurred at 35°C. Studies on the efficacy of different concentrations of conidia of C. javanica against whitefly nymphs revealed that the mortality rate increased with the increase in concentrations of inoculum. About 95.6 ± 2.1% corrected mortality was recorded at a concentration of 10 7 conidia ml −1 after 7 days of treatment. The culture filtrate of C. javanica exhibited toxicity against whitefly nymphs and recorded 61.3 ± 9.5% corrected mortality after 48 h of treatment. There was no significant difference between the mortality caused by conidial suspension and culture filtrate. Gas chromatography-mass spectrometry (GC-MS) analysis revealed the presence of 17 compounds in the culture filtrate of C. javanica. Lauric acid was present in the largest amount (28.7%) and the long chain (C22-25) hydrocarbons contributed 38.3%. This is the first report on the isolation and characterization of C. javanica from B. tabaci from Oman.

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“…A drench application of NeemAzal, a commercial neem-based product, resulted in up to 90% mortality of immature B. tabaci populations in tropical open fieldgrown and greenhouse-grown tomato [262]. Moreover, plant-derived essential oils have also been widely evaluated to manage B. tabaci [263][264][265][266][267][268][269]. For example, essential oils of Piper callosum, Adenocalymma alliaceum, Pelargonium graveolens, and Plectranthus neochilus deterred the settlement and oviposition of B. tabaci adults on tomato plants [266].…”

Section: Plant-based Productsmentioning

confidence: 99%

Bemisia tabaci on Vegetables in the Southern United States: Incidence, Impact, and Management

Mbata

Punnuri

et al. 2021

Insects

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Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) is among the most economically important insect pests of various vegetable crops in the Southern United States. This insect is considered a complex of at least 40 morphologically indistinguishable cryptic species. Bemisia tabaci Middle East-Asia Minor 1 (MEAM1) was initially introduced in the United States around 1985 and has since rapidly spread across the Southern United States to Texas, Arizona, and California, where extreme field outbreaks have occurred on vegetable and other crops. This pest creates extensive plant damage through direct feeding on vegetables, secreting honeydew, causing plant physiological disorders, and vectoring plant viruses. The direct and indirect plant damage in vegetable crops has resulted in enormous economic losses in the Southern United States, especially in Florida, Georgia, and Texas. Effective management of B. tabaci on vegetables relies mainly on the utilization of chemical insecticides, particularly neonicotinoids. However, B. tabaci has developed considerable resistance to most insecticides. Therefore, alternative integrated pest management (IPM) strategies are required, such as cultural control by manipulation of production practices, resistant vegetable varieties, and biological control using a suite of natural enemies for the management of the pest.

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Repellency, toxicity, and anti-oviposition of essential oil of Gardenia jasminoides and its four major chemical components against whiteflies and mites

Cited by 34 publications

References 17 publications

Bioassay guided isolation of mosquito biting deterrent compounds from Strumpfia maritima

Bioassay guided isolation of mosquito biting deterrent compounds from Strumpfia maritima

Efficacy of an Omani strain ofCordyceps javanicaand its culture filtrate against whitefly (Bemisia tabaci) under laboratory conditions

Bemisia tabaci on Vegetables in the Southern United States: Incidence, Impact, and Management

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