Evolutionary Novelty in a Butterfly Wing Pattern through Enhancer Shuffling - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue PLoS Biology Année : 2016

Evolutionary Novelty in a Butterfly Wing Pattern through Enhancer Shuffling

Richard W R Wallbank
  • Fonction : Auteur
Simon Baxter
  • Fonction : Auteur
Carolina Pardo-Diaz
  • Fonction : Auteur
Joseph J Hanly
  • Fonction : Auteur
Kanchon K Dasmahapatra
  • Fonction : Auteur
Camilo Salazar
  • Fonction : Auteur
Nicola Nadeau
  • Fonction : Auteur
W. Owen Owen Mcmillan
  • Fonction : Auteur
Chris D Jiggins
  • Fonction : Auteur
  • PersonId : 1060369

Résumé

An important goal in evolutionary biology is to understand the genetic changes underlying novel morphological structures. We investigated the origins of a complex wing pattern found among Amazonian Heliconius butterflies. Genome sequence data from 142 individuals across 17 species identified narrow regions associated with two distinct red colour pattern elements, dennis and ray. We hypothesise that these modules in non-coding sequence represent distinct cis-regulatory loci that control expression of the transcription factor optix, which in turn controls red pattern variation across Heliconius. Phylogenetic analysis of the two elements demonstrated that they have distinct evolutionary histories and that novel adaptive morphological variation was created by shuffling these cis-regulatory modules through recombination between divergent lineages. In addition, recombination of modules into different combinations within species further contributes to diversity. Analysis of the timing of diversification in these two regions supports the hypothesis of introgression moving regulatory modules between species, rather than shared ancestral variation. The dennis phenotype introgressed into Heliconius melpomene at about the same time that ray originated in this group, while ray introgressed back into H. elevatus much more recently. We show that shuffling of existing enhancer elements both within and between species provides a mechanism for rapid diversification and generation of novel morphological combinations during adaptive radiation.
Fichier principal
Vignette du fichier
wallbank16plosbiol.pdf (10.47 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02401881 , version 1 (10-12-2019)

Identifiants

Citer

Richard W R Wallbank, Simon Baxter, Carolina Pardo-Diaz, Joseph J Hanly, Simon Martin, et al.. Evolutionary Novelty in a Butterfly Wing Pattern through Enhancer Shuffling. PLoS Biology, 2016, 14 (1), pp.e1002353. ⟨10.1371/journal.pbio.1002353⟩. ⟨hal-02401881⟩
53 Consultations
15 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More