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Elife


Title:Sex-specific triacylglycerides are widely conserved in Drosophila and mediate mating behavior
Author(s):Chin JS; Ellis SR; Pham HT; Blanksby SJ; Mori K; Koh QL; Etges WJ; Yew JY;
Address:"Temasek Life Sciences Laboratory, National University of Singapore, Singapore, Singapore"
Journal Title:Elife
Year:2014
Volume:20140311
Issue:
Page Number:e01751 -
DOI: 10.7554/eLife.01751
ISSN/ISBN:2050-084X (Electronic) 2050-084X (Linking)
Abstract:"Pheromones play an important role in the behavior, ecology, and evolution of many organisms. The structure of many insect pheromones typically consists of a hydrocarbon backbone, occasionally modified with various functional oxygen groups. Here we show that sex-specific triacylclyerides (TAGs) are broadly conserved across the subgenus Drosophila in 11 species and represent a novel class of pheromones that has been largely overlooked. In desert-adapted drosophilids, 13 different TAGs are secreted exclusively by males from the ejaculatory bulb, transferred to females during mating, and function synergistically to inhibit courtship from other males. Sex-specific TAGs are comprised of at least one short branched tiglic acid and a long linear fatty acyl component, an unusual structural motif that has not been reported before in other natural products. The diversification of chemical cues used by desert-adapted Drosophila as pheromones may be related to their specialized diet of fermenting cacti"
Keywords:Animals Biological Evolution Crotonates/*chemistry/metabolism Desert Climate Drosophila melanogaster/chemistry/classification/*physiology Female Hemiterpenes Male Molecular Structure Pheromones/biosynthesis/*chemistry Phylogeny Reproduction/physiology Sex;
Notes:"MedlineChin, Jacqueline S R Ellis, Shane R Pham, Huong T Blanksby, Stephen J Mori, Kenji Koh, Qi Ling Etges, William J Yew, Joanne Y eng Research Support, Non-U.S. Gov't England 2014/03/13 Elife. 2014 Mar 11; 3:e01751. doi: 10.7554/eLife.01751"

 
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