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Evolutionary shifts in taste coding in the fruit pest Drosophila suzukii

Although most Drosophila species lay eggs in overripe fruit, the agricultural pest Drosophila suzukii lays eggs in ripe fruit. We found that changes in bitter taste perception have accompanied this adaptation. We show that bitter-sensing mutants of Drosophila melanogaster undergo a shift in egg layi...

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Autores principales: Dweck, Hany KM, Talross, Gaëlle JS, Wang, Wanyue, Carlson, John R
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7899650/
https://www.ncbi.nlm.nih.gov/pubmed/33616529
http://dx.doi.org/10.7554/eLife.64317
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author Dweck, Hany KM
Talross, Gaëlle JS
Wang, Wanyue
Carlson, John R
author_facet Dweck, Hany KM
Talross, Gaëlle JS
Wang, Wanyue
Carlson, John R
author_sort Dweck, Hany KM
collection PubMed
description Although most Drosophila species lay eggs in overripe fruit, the agricultural pest Drosophila suzukii lays eggs in ripe fruit. We found that changes in bitter taste perception have accompanied this adaptation. We show that bitter-sensing mutants of Drosophila melanogaster undergo a shift in egg laying preference toward ripe fruit. D. suzukii has lost 20% of the bitter-sensing sensilla from the labellum, the major taste organ of the head. Physiological responses to various bitter compounds are lost. Responses to strawberry purées are lost from two classes of taste sensilla. Egg laying is not deterred by bitter compounds that deter other species. Profiling of labellar transcriptomes reveals reduced expression of several bitter Gr genes (gustatory receptors). These findings support a model in which bitter compounds in early ripening stages deter egg laying in most Drosophila species, but a loss of bitter response contributes to the adaptation of D. suzukii to ripe fruit.
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spelling pubmed-78996502021-02-24 Evolutionary shifts in taste coding in the fruit pest Drosophila suzukii Dweck, Hany KM Talross, Gaëlle JS Wang, Wanyue Carlson, John R eLife Neuroscience Although most Drosophila species lay eggs in overripe fruit, the agricultural pest Drosophila suzukii lays eggs in ripe fruit. We found that changes in bitter taste perception have accompanied this adaptation. We show that bitter-sensing mutants of Drosophila melanogaster undergo a shift in egg laying preference toward ripe fruit. D. suzukii has lost 20% of the bitter-sensing sensilla from the labellum, the major taste organ of the head. Physiological responses to various bitter compounds are lost. Responses to strawberry purées are lost from two classes of taste sensilla. Egg laying is not deterred by bitter compounds that deter other species. Profiling of labellar transcriptomes reveals reduced expression of several bitter Gr genes (gustatory receptors). These findings support a model in which bitter compounds in early ripening stages deter egg laying in most Drosophila species, but a loss of bitter response contributes to the adaptation of D. suzukii to ripe fruit. eLife Sciences Publications, Ltd 2021-02-22 /pmc/articles/PMC7899650/ /pubmed/33616529 http://dx.doi.org/10.7554/eLife.64317 Text en © 2021, Dweck et al http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Neuroscience
Dweck, Hany KM
Talross, Gaëlle JS
Wang, Wanyue
Carlson, John R
Evolutionary shifts in taste coding in the fruit pest Drosophila suzukii
title Evolutionary shifts in taste coding in the fruit pest Drosophila suzukii
title_full Evolutionary shifts in taste coding in the fruit pest Drosophila suzukii
title_fullStr Evolutionary shifts in taste coding in the fruit pest Drosophila suzukii
title_full_unstemmed Evolutionary shifts in taste coding in the fruit pest Drosophila suzukii
title_short Evolutionary shifts in taste coding in the fruit pest Drosophila suzukii
title_sort evolutionary shifts in taste coding in the fruit pest drosophila suzukii
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7899650/
https://www.ncbi.nlm.nih.gov/pubmed/33616529
http://dx.doi.org/10.7554/eLife.64317
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