High level of novelty under the hood of convergent evolution

• 成果类型: Article
• 署名作者: Belleghem, Steven M. Van; Ruggieri, Angelo A.; Concha, Carolina; Livraghi, Luca; Hebberecht, Laura; Rivera, Edgardo Santiago; Ogilvie, James G.; Hanly, Joseph J.; Warren, Ian A.; Planas, Silvia; Ortiz-Ruiz, Yadira; Reed, Robert; Lewis, James J.; Jiggins, Chris D.; Counterman, Brian A.; McMillan, W. Owen; Papa, Riccardo
• 署名单位: University of Puerto Rico; University of Puerto Rico Medical Sciences Campus; KU Leuven; Smithsonian Institution; Smithsonian Tropical Research Institute; George Washington University; University of Bristol; University of Cambridge; University of Bayreuth; Auburn University System; Auburn University; University of Puerto Rico; Cornell University; Clemson University; University of Puerto Rico; University of Puerto Rico Medical Sciences Campus
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-10683
• DOI: 10.1126/science.ade0004
• 发表日期: 2023-03-10
• 页码: 1043-1049
• 关键词: chromatin; pattern; butterflies; underlies; landscape

摘要

Little is known about the extent to which species use homologous regulatory architectures to achieve phenotypic convergence. By characterizing chromatin accessibility and gene expression in developing wing tissues, we compared the regulatory architecture of convergence between a pair of mimetic butterfly species. Although a handful of color pattern genes are known to be involved in their convergence, our data suggest that different mutational paths underlie the integration of these genes into wing pattern development. This is supported by a large fraction of accessible chromatin being exclusive to each species, including the de novo lineage-specific evolution of a modular optix enhancer. These findings may be explained by a high level of developmental drift and evolutionary contingency that occurs during the independent evolution of mimicry.