Chemical composition and bioactivities of three Chrysanthemum essential oils against Tribolium confusum (du Val) (Coleoptera: Tenebrionidae)

Abstract

Essential oils from three species of Chrysanthemum growing in Tunisia (C. coronarium, C. fuscatum, and C. grandiflorum) were first analyzed by gas chromatography (GC) and GC/mass spectrometry (MS) and then evaluated for toxicity and antifeeding action against Tribolium confusum. The essential oils obtained from leaves and flowers shared a similar qualitative composition, but the relative proportions of the constituents were quite different. The essential oil of C. grandiflorum was rich in sesquiterpenoids, while those of C. fuscatum and C. coronarium were rich in monoterpenoids. The main common constituents of all the essential oils were α-pinene, myrcene, α-humulene, β-caryophylene, spathulenol, and caryophyllene oxide. The most effective essential oil was obtained from the leaves of C. grandiflorum, that inhibited the relative growth rate (−0.03 mg/mg/d), efficiency of conversion of ingested food (−50.69%), relative consumption rate, caused an antifeeding effect (66.43%) and a high mortality (80%) of T. confusum larvae. Topical application C. grandiflorum essential oil caused a significant insect mortality that attends 27% after 7 days of treatment. While essential oil from C. coronarium flowers has contact and fumigant toxicity with a mortality of 9 and 13%, respectively. Results analysis highlights a relationship between essential oils composition and insecticidal activity against T. confusum. The study showed that each essential oil has specific chemical composition and act differently according to the nature of attributed test. The use of essential oils from different Chrysanthemum species with different methods helps poor farmers who store small amounts of grains to preserve it against pest infestatio

Headspace solid-phase microextraction and gas chromatography–mass spectrometry of volatile components of <i>Chrysanthemum morifolium</i> Ramat

“…Essential oils are blends of volatile secondary metabolites from plants; these oils feature a broad-spectrum activity because of the presence of several chemicals [5]. Currently, the main extraction methods for volatile oil from C. morifolium are steam distillation extraction (SDE) [4,5,7], ultrasonic extraction [8], and supercritical carbon dioxide extraction [3]. Different from the above-mentioned extraction methods, headspace solid-phase microextraction (HS-SPME) is simple and reproducible, does not involve solvent use, and includes a short extraction time [9].…”

“…The plant's dried flowers contain alkanes, flavonoids, terpenoids, unsaturated fatty acids, polysaccharides, and essential oils [1][2][3][4][5][6][7]. Essential oils are blends of volatile secondary metabolites from plants; these oils feature a broad-spectrum activity because of the presence of several chemicals [5]. Currently, the main extraction methods for volatile oil from C. morifolium are steam distillation extraction (SDE) [4,5,7], ultrasonic extraction [8], and supercritical carbon dioxide extraction [3].…”

Repellent and Fumigant Activities of <i>Tanacetum nubigenum</i> Wallich. ex DC Essential Oils against <i>Tribolium castaneum</i> (Herbst) (Coleoptera: Tenebrionidae)

“…Literature records showed that fumigant efficacy of a number of aromatic and medicinal plant essential oils have been investigated in the laboratories against stored product insect pests including T. castaneum 19,20 . However, reports on the insecticidal activity of T. nubigenum essential oil against stored product pests are meager.…”

“…The ionization of the sample components was performed in EI mode of 70 eV. The constituents of oil were identified by calculation of their retention indices under temperature programmed condition for n-alkanes C 8 -C 20 . Identification of individual components was assigned by retention time comparison with authentic components and oil of known composition and by mass spectra with those obtained from Wiley/NIST/ Pfleger Mass Spectral library Version 2.0 f as well as with literature data 11 .…”

Elemental defense of nickel hyperaccumulator seeds against a generalist insect granivore

“…The confused flour beetle, Tribolium confusum Jaquelin du Val (Coleoptera: Tenebrionidae), is a small insect (adults measure 3-6 mm) that commonly infests flour and grain (Haouas et al 2012). Adults of T. confusum used in the experiments were obtained from a population cultured at Auburn University for more than 10 years.…”