Trade-off between toxicity and signal detection orchestrated by frequency- and density-dependent genes

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פותח על ידי קלירמאש פתרונות בע"מ -

Trade-off between toxicity and signal detection orchestrated by frequency- and density-dependent genes

Year: 

2011

Source of publication :

PLoS ONE

Authors :

דומברובסקי, אביב

.

Volume :

Co-Authors: 

Arthaud, L., UMR INRA/CNRS/UNSA 6243, University of Nice Sophia Antipolis, Sophia Antipolis, France
Rokia-Mille, S.B., UMR INRA/CNRS/UNSA 6243, University of Nice Sophia Antipolis, Sophia Antipolis, France
Raad, H., UMR INRA/CNRS/UNSA 6243, University of Nice Sophia Antipolis, Sophia Antipolis, France
Dombrovsky, A., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Prevost, N., UMR INRA/CNRS/UNSA 6243, University of Nice Sophia Antipolis, Sophia Antipolis, France
Capovilla, M., Department of Biology and Evolution, Dulbecco Telethon Institute, University of Ferrara, Ferrara, Italy
Robichon, A., UMR INRA/CNRS/UNSA 6243, University of Nice Sophia Antipolis, Sophia Antipolis, France

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Trade-off between toxicity and signal detection orchestrated by frequency- and density-dependent genes

Abstract: 

Behaviors in insects are partly highly efficient Bayesian processes that fulfill exploratory tasks ending with the colonization of new ecological niches. The foraging (for) gene in Drosophila encodes a cGMP-dependent protein kinase (PKG). It has been extensively described as a frequency-dependent gene and its transcripts are differentially expressed between individuals, reflecting the population density context. Some for transcripts, when expressed in a population at high density for many generations, concomitantly trigger strong dispersive behavior associated with foraging activity. Moreover, genotype-by-environment interaction (GEI) analysis has highlighted a dormant role of for in energetic metabolism in a food deprivation context. In our current report, we show that alleles of for encoding different cGMP-dependent kinase isoforms influence the oxidation of aldehyde groups of aromatic molecules emitted by plants via Aldh-III and a phosphorylatable adaptor. The enhanced efficiency of oxidation of aldehyde odorants into carboxyl groups by the action of for lessens their action and toxicity, which should facilitate exploration and guidance in a complex odor environment. Our present data provide evidence that optimal foraging performance requires the fast metabolism of volatile compounds emitted by plants to avoid neurosensory saturation and that the frequency-dependent genes that trigger dispersion influence these processes. © 2011 Arthaud et al.