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Title: Genomic adaptations to aquatic and aerial life in mayflies and the origin of insect wings
Author: Almudi, Isabel
Vizueta Moraga, Joel
Wyatt, Christopher D. R.
de Mendoza, Alex
Marletaz, Ferdinand
Firbas, Panos N.
Feuda, Roberto
Masiero, Giulio
Medina, Patricia
Alcaina Caro, Ana
Cruz, Fernando
Gómez Garrido, Jessica
Gut, Marta
Alioto, Tyler S.
Vargas Chavez, Carlos
Davie, Kristofer
Misof, Bernhard
González, Josefa
Aerts, Stein
Lister, Ryan
Paps, Jordi
Rozas Liras, Julio A.
Sánchez-Gracia, Alejandro
Irimia, Manuel
Maeso, Ignacio
Casares, Fernando
Keywords: Genètica animal
Adaptació animal
Animal genetics
Animal adaptation
Issue Date: 26-May-2020
Publisher: Nature Publishing Group
Abstract: The evolution of winged insects revolutionized terrestrial ecosystems and led to the largest animal radiation on Earth. However, we still have an incomplete picture of the genomic changes that underlay this diversification. Mayflies, as one of the sister groups of all other winged insects, are key to understanding this radiation. Here, we describe the genome of the mayfly Cloeon dipterum and its gene expression throughout its aquatic and aerial life cycle and specific organs. We discover an expansion of odorant-binding-protein genes, some expressed specifically in breathing gills of aquatic nymphs, suggesting a novel sensory role for this organ. In contrast, flying adults use an enlarged opsin set in a sexually dimorphic manner, with some expressed only in males. Finally, we identify a set of wing-associated genes deeply conserved in the pterygote insects and find transcriptomic similarities between gills and wings, suggesting a common genetic program. Globally, this comprehensive genomic and transcriptomic study uncovers the genetic basis of key evolutionary adaptations in mayflies and winged insects.
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It is part of: Nature Communications, 2020, vol. 11, num. 2631
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ISSN: 2041-1723
Appears in Collections:Articles publicats en revistes (Genètica, Microbiologia i Estadística)

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