Journal of Insect Science (2004) 4 (28), p. 2 (Bober et al.)

R. Bober, T. Zacharova and A. Rafaeli (2004)
The effect of juvenile hormone on the PBAN-receptor and pheromone production in the moth Helicoverpa armigera: An aging hormone in adult females?
Journal of Insect Science 4 (28), 2-2
Abstracts from Eighth International Conference on the Juvenile Hormones
Abstract: The present study was designed to elucidate the effect of Juvenile Hormone (JH) on PBAN activation of pheromone production in vitro and on specific binding to a PBAN-receptor (PBANR) in pheromone glands of H. armigera females. PBAN can activate pheromone biosynthesis only in pheromone glands of newly emerged adult females, after which levels increase with age and reach maximum levels in 3 and 4 day old female glands, thereafter the pheromonotropic response decreases. Female pharate pupae do not respond to PBAN but, in the presence of JH II or its analog, fenoxycarb (FX), PBAN can induce a response in pharate females. In addition, a photoaffinity-biotin-labeled PBAN-analog, specifically binds to a 50 kD putative PBAN membrane receptor in adult females. This binding is absent in pharate females but can be induced after JH II or FX treatments to levels of newly emerged females, thereby providing evidence that JH up-regulates the PBAN-R in immature females. In contrast, in 3-4 day-old mature adult females, FX causes down-regulation of both pheromone production and PBAN-R binding to levels present in older females. Taken together these data indicate that juvenile hormone treatment shifts the normal age-dependent response to PBAN.
Database assignments for author(s): Ada Rafaeli

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera