Effect of the pheromone biosynthesis activating neuropeptide on sex pheromone biosynthesis in Spodoptera littoralis isolated glands

✍ Scribed by Gemma Fabriás; M. Pilar Marco; Francisco Camps

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 667 KB
• Volume: 27
• Category: Article
• ISSN: 0739-4462
• DOI: 10.1002/arch.940270202

✦ Synopsis

The control of Spodopfera littoralis sex pheromone biosynthesis has been investigated with synthetic pheromone biosynthesis activating neuropeptide (PBAN) and different labeled tracers using an in vitro isolated gland system. Responsiveness of the glands to PBAN stimulation was impaired by careless tissue manipulation. The fact that PBAN is active in the isolated gland system suggests that this might be a target organ for this peptide in S. littoralis. As reported previously with Br-SOG extracts and intact females, label incorporation into the pheromone increased in glands treated with PBAN from all the precursors tested. However, the formation of labeled intermediates from dsEll-14:Acid also occurred in glands incubated in the absence of the peptide, but the amounts of d5Z9,E11-14:Acid were lower in PBAN treated glands than in controls. These results indicate that PBAN controls pheromone biosynthesis in 5. littoralis by regulating the reduction of acyl moieties.