alkaloids; various fatty acids like oleic acid, linoleic acids, linolenic acids, arachidonic acid, eicosapentaenoic acid, and elaidic acid; arabinopyranosides; ecdysone
; ecdysterone; juglanin; kaempferols; and melilotoside.
On the study of ecdysone
, Zhao and Lu (2004) observed ultrastructure of Y-organ during the molting cycle.
receptor is the product of EcR and Ultraspiracle genes.
Prothoracic glands secreting ecdysone
hormone in larval instars, are larval structures that disintegrate gradually by hemocytic autolysis in the pupal period and then disappear completely in the adult life of the insect.
Azadirachtin isstructurally similartothe insect ecdysone
hormones, which control the process of metamorphosis as the insects pass from larva to pupa to adult.
Effects of the neem three components azadirachtin, salanin, nimbin, and 6- desacetylnimbin on ecdysone
Cuticular protein and transcription factor genes expressed during prepupal-pupal transition and by ecdysone
pulse treatment in wing discs of Bombyx mori.
Thummel, "GFP in living animals reveals dynamic developmental responses to ecdysone
during Drosophila metamorphosis," Developmental Biology, vol.
Caption: FIGURE 2: Chemical structure of cortisol (a) and ecdysone
As one possibility, ecdysone
signaling is an innate immunity maturation or immunity-stimulating hormonal agent [19, 20].
Ignesti et al., "Drosophila 4EHP is essential for the larval-pupal transition and required in the prothoracic gland for ecdysone
biosynthesis," Developmental Biology, vol.
Effects of ecdysone
agonist halofenozide against Culex pipiens.