6,10,14-Trimethylpentadecan-2-one: A Bermuda grass phagostimulant to fall armyworm (lepidoptera: Noctuidae)

Mohamed, M. A.; Quisenberry, S. S.; Moellenbeck, D. J.

doi:10.1007/bf00987827

Cited by 18 publications

(7 citation statements)

References 30 publications

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“…In addition, it serves as a phagostimulant of Bermuda grass to larvae of the fall armyworm, Spodoptera litoralis. [42] The respective alcohol 21 is a male pheromone of the butterfly Bicyclus anynana, [43] while (E)-phytol (23) serves this function in males of the moth Ephestia elutella. It evokes female-courtship response in mixtures with 4-decanolide or 4-undecanolide.…”

Section: Discussionmentioning

confidence: 99%

Aphrodisiac Pheromones from the Wings of the Small Cabbage White and Large Cabbage White Butterflies, Pieris rapae and Pieris brassicae

et al. 2009

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The small and large cabbage butterflies, Pieris rapae and P. brassicae, are found worldwide and are of considerable economic importance. The composition of the male scent-producing organs present on the wings was investigated. More than 120 components were identified, but only a small portion proved to be male specific. Major components were the known beetle pheromone ferrulactone (1) in P. rapae and its previously unknown larger analogue, brassicalactone (2), in P. brassicae. The latter carries an additional isoprene unit and is closely related to 1. Other components present in larger amounts on male relative to female wings were hexahydrofarnesylacetone (18) and phytol (23). Brassicalactone (2) was fully characterized by synthesis of its various diastereomers by using ring-closing metathesis. A similar approach to ferrulactone (1) failed, presumably because of its smaller ring size. Instead, this compound was synthesized by using a modified literature procedure. The biological activity of the compounds in the extract was tested by coupled gas chromatographic-electroantennographic (GC-EAD) analysis, which showed that both macrolides and the other major components of the wings can be detected by the antennae of the conspecific female butterflies. Other detectable compounds included several alkanes, which are typical constituents of the butterfly cuticula, derivatives of phytol (23) and long-chain secondary alcohols. Finally, bioassays with males showed that the mixture of 1 (P. rapae) or 2 (P. brassicae) together with 18 and 23 applied to freshly eclosed males increased mating success compared to untreated males. Therefore, the two macrolides 1 and 2 are aphrodisiac pheromone components of male small and large cabbage white butterflies, respectively.

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Section: Discussionmentioning

confidence: 99%

Aphrodisiac Pheromones from the Wings of the Small Cabbage White and Large Cabbage White Butterflies, Pieris rapae and Pieris brassicae

et al. 2009

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“…A diterpenoid, phytol was of the highest concentration (21.00%) in the extract (Fig.1). Phytol-rich extract have been reported to exhibit antimicrobial (Fitsiou et al, 2007;Radulovic et al, 2011) alleopathic (Razavi and Nejad-Ebrahimi, 2010) and insecticidal activities (Mohamed et al, 1992). From the spectrophotometric analysis, flavonoids and saponins were estimated as 6.25 mg rutin/g and 5.18 mg ginsenoside/g respectively (Table 2).…”

Section: Resultsmentioning

confidence: 99%

Isolation of 2, 5-dithia-3, 6-diazabicyclo [2.2.1] heptane and GC-MS analysis of silylated extract from Tragia benthamii

Balogun¹,

Oladosu²,

Liu³

2020

ijs

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Tragia benthamii is a medicinal plant of repute endemic in West Africa. However, despite the traditional uses of the plant its secondary metabolites are yet to be profiled. Thus, this study aimed at identifying the chemical constituents of T. benthamii. Air-dried samples (600 g) of the plant were extracted with aqueous ethanol (95 %) and thereafter, portions of the crude extract obtained were used separately for chromatographic purifications, GC-MS analysis and spectrophotometric quantitation of the secondary metabolites. The chromatographic purification of the extract afforded a pure compound elucidated as 2,5-dithia-3,6-diazabicyclo [2.2.1] heptane using spectroscopic techniques. Upon silylation and GC-MS analysis of the extract, derivatives of sugar (34.65%), fatty acids (24.11%) and phytol (21.00%) were identified as principal constituents. Also, a total of 6.25 mg rutin/g, 5.18 mg ginsenoside/g and 6.84 mg glucose/g dry weight sample were obtained for flavonoids, saponins and carbohydrate, respectively from the spectrophotometric quantitation. These secondary metabolites are being reported for the first time from this plant. Keywords: Tragia benthamii; secondary metabolites; quantitative analysis; silylation

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“…This somaclone maintained the same yield, persistence, and forage nutritional quality parameters as the parent. Biochemieal tests showed that the somaclone had lower levels of an insect feeding stimulant (Mohamed et al, 1992). This somaclone maintained the positive agronomie traits of the parent cultivar, but had a change in the production of a secondary metabolite that conferred increased resistance to fall armyworm.…”

Section: Somaclonal Variation In Forage Grassesmentioning

confidence: 95%

Clonal Variation in Cereals and Forage Grasses

Rush

Xie

Croughan

et al. 1998

Somaclonal Variation and Induced Mutations in Crop Improvement

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6,10,14-Trimethylpentadecan-2-one: A Bermuda grass phagostimulant to fall armyworm (lepidoptera: Noctuidae)

Cited by 18 publications

References 30 publications

Aphrodisiac Pheromones from the Wings of the Small Cabbage White and Large Cabbage White Butterflies, Pieris rapae and Pieris brassicae

Aphrodisiac Pheromones from the Wings of the Small Cabbage White and Large Cabbage White Butterflies, Pieris rapae and Pieris brassicae

Isolation of 2, 5-dithia-3, 6-diazabicyclo [2.2.1] heptane and GC-MS analysis of silylated extract from Tragia benthamii

Clonal Variation in Cereals and Forage Grasses

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