« Previous Abstract"Separation, identification, and design of alpha-glucosidase inhibitory peptides based on the molecular mechanism from Paeonia ostii 'Feng Dan' seed protein"    Next Abstract"Selectivity and neuroendocrine regulation of the precursor uptake by pheromone glands from hemolymph in geometrid female moths, which secrete epoxyalkenyl sex pheromones" »

Insect Biochem Mol Biol

Title:		Polyunsaturated hydrocarbons in the hemolymph: biosynthetic precursors of epoxy pheromones of geometrid and arctiid moths
Author(s):		Wei W; Miyamoto T; Endo M; Murakawa T; Pu GQ; Ando T;
Address:		"Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan"
Journal Title:		Insect Biochem Mol Biol
Year:		2003
Volume:		33
Issue:		4
Page Number:		397 - 405
DOI:		10.1016/s0965-1748(03)00002-x
ISSN/ISBN:		0965-1748 (Print) 0965-1748 (Linking)
Abstract:		"Female moths of many species in Geometridae, Arctiidae and some other macrolepidopteran families produce epoxy pheromones, which are probably derived from polyunsaturated hydrocarbons. In order to understand a biosynthetic site, hemolymph from both sexes of two geometrid species, Ascotis selenaria cretacea and Hemerophila artilineata, and one arctiid species, Spilosoma imparilis, was shaken with n-hexane and the solvent extracts were analyzed by GC-MS. Each extract of the female hemolymph sex-specifically included polyunsaturated hydrocarbons corresponding to the pheromonal epoxy components in addition to many saturated hydrocarbons, but no epoxy compounds were detected in it. Based on this analysis, deuterated polyunsaturated hydrocarbons were injected into the abdomens of two geometrid females, and the labeled epoxy components were successfully yielded from the pheromone glands. This result indicated that the polyunsaturated hydrocarbons occurring in the female hemolymph were direct pheromone precursors, which might be produced outside the pheromone gland, probably in oenocytes associated with abdominal epidermal cells or in the fat body, and transported to the pheromone gland via the hemolymph for their epoxydation and emission into the atmosphere"
Keywords:		"Animals Chromatography, Thin Layer Gas Chromatography-Mass Spectrometry Hemolymph/*chemistry Hydrocarbons/*analysis/chemistry/*metabolism Moths/classification/*metabolism Sex Attractants/*biosynthesis/chemistry Species Specificity;"
Notes:		"MedlineWei, W Miyamoto, T Endo, M Murakawa, T Pu, G-Q Ando, T eng Research Support, Non-U.S. Gov't England 2003/03/26 Insect Biochem Mol Biol. 2003 Apr; 33(4):397-405. doi: 10.1016/s0965-1748(03)00002-x"