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Predator strike shapes antipredator phenotype through new genetic interactions in water striders

How novel genetic interactions evolve, under what selective pressures, and how they shape adaptive traits is often unknown. Here we uncover behavioural and developmental genetic mechanisms that enable water striders to survive attacks by bottom-striking predators. Long midlegs, critical for antipred...

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Autores principales: Armisén, David, Nagui Refki, Peter, Crumière, Antonin Jean Johan, Viala, Séverine, Toubiana, William, Khila, Abderrahman
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4568302/
https://www.ncbi.nlm.nih.gov/pubmed/26323602
http://dx.doi.org/10.1038/ncomms9153
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author Armisén, David
Nagui Refki, Peter
Crumière, Antonin Jean Johan
Viala, Séverine
Toubiana, William
Khila, Abderrahman
author_facet Armisén, David
Nagui Refki, Peter
Crumière, Antonin Jean Johan
Viala, Séverine
Toubiana, William
Khila, Abderrahman
author_sort Armisén, David
collection PubMed
description How novel genetic interactions evolve, under what selective pressures, and how they shape adaptive traits is often unknown. Here we uncover behavioural and developmental genetic mechanisms that enable water striders to survive attacks by bottom-striking predators. Long midlegs, critical for antipredator strategy, are shaped through a lineage-specific interaction between the Hox protein Ultrabithorax (Ubx) and a new target gene called gilt. The differences in leg morphologies are established through modulation of gilt differential expression between mid and hindlegs under Ubx control. Furthermore, short-legged water striders, generated through gilt RNAi knockdown, exhibit reduced performance in predation tests. Therefore, the evolution of the new Ubx–gilt interaction contributes to shaping the legs that enable water striders to dodge predator strikes. These data show how divergent selection, associated with novel prey–predator interactions, can favour the evolution of new genetic interactions and drive adaptive evolution.
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spelling pubmed-45683022015-09-28 Predator strike shapes antipredator phenotype through new genetic interactions in water striders Armisén, David Nagui Refki, Peter Crumière, Antonin Jean Johan Viala, Séverine Toubiana, William Khila, Abderrahman Nat Commun Article How novel genetic interactions evolve, under what selective pressures, and how they shape adaptive traits is often unknown. Here we uncover behavioural and developmental genetic mechanisms that enable water striders to survive attacks by bottom-striking predators. Long midlegs, critical for antipredator strategy, are shaped through a lineage-specific interaction between the Hox protein Ultrabithorax (Ubx) and a new target gene called gilt. The differences in leg morphologies are established through modulation of gilt differential expression between mid and hindlegs under Ubx control. Furthermore, short-legged water striders, generated through gilt RNAi knockdown, exhibit reduced performance in predation tests. Therefore, the evolution of the new Ubx–gilt interaction contributes to shaping the legs that enable water striders to dodge predator strikes. These data show how divergent selection, associated with novel prey–predator interactions, can favour the evolution of new genetic interactions and drive adaptive evolution. Nature Pub. Group 2015-09-01 /pmc/articles/PMC4568302/ /pubmed/26323602 http://dx.doi.org/10.1038/ncomms9153 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Armisén, David
Nagui Refki, Peter
Crumière, Antonin Jean Johan
Viala, Séverine
Toubiana, William
Khila, Abderrahman
Predator strike shapes antipredator phenotype through new genetic interactions in water striders
title Predator strike shapes antipredator phenotype through new genetic interactions in water striders
title_full Predator strike shapes antipredator phenotype through new genetic interactions in water striders
title_fullStr Predator strike shapes antipredator phenotype through new genetic interactions in water striders
title_full_unstemmed Predator strike shapes antipredator phenotype through new genetic interactions in water striders
title_short Predator strike shapes antipredator phenotype through new genetic interactions in water striders
title_sort predator strike shapes antipredator phenotype through new genetic interactions in water striders
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4568302/
https://www.ncbi.nlm.nih.gov/pubmed/26323602
http://dx.doi.org/10.1038/ncomms9153
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