Dual evolutionary origin of insect wings supported by an investigation of the abdominal wing serial homologs in Tribolium

Proceedings of the National Academy of Sciences of the United States of America
David M Linz, Yoshinori Tomoyasu

Abstract

The origin of insect wings is still a highly debated mystery in biology, despite the importance of this evolutionary innovation. There are currently two prominent, but contrasting wing origin hypotheses (the tergal origin hypothesis and the pleural origin hypothesis). Through studies in the Tribolium beetle, we have previously obtained functional evidence supporting a third hypothesis, the dual origin hypothesis. Although this hypothesis can potentially unify the two competing hypotheses, it requires further testing from various fields. Here, we investigated the genetic regulation of the tissues serially homologous to wings in the abdomen, outside of the appendage-bearing segments, in Tribolium We found that the formation of ectopic wings in the abdomen upon homeotic transformation relies not only on the previously identified abdominal wing serial homolog (gin-trap), but also on a secondary tissue in the pleural location. Using an enhancer trap line of nubbin (a wing lineage marker), we were able to visualize both of these two tissues (of tergal and pleural nature) contributing to form a complete wing. These results support the idea that the presence of two distinct sets of wing serial homologs per segment represents an ancestr...Continue Reading

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Citations

Nov 23, 2019·Science·Yonggang HuArmin P Moczek
Jan 16, 2019·Proceedings of the National Academy of Sciences of the United States of America·Benjamin WipflerSabrina Simon
Mar 29, 2020·Proceedings of the National Academy of Sciences of the United States of America·Feng ShangJin-Jun Wang
Aug 5, 2020·Nature Ecology & Evolution·Courtney M Clark-Hachtel, Yoshinori Tomoyasu
Jul 18, 2018·Journal of Developmental Biology·Mireya Ruiz-LosadaCarlos Estella
Oct 30, 2020·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·Antónia Monteiro
Jan 21, 2021·Proceedings. Biological Sciences·Yonggang Hu, Armin P Moczek
Mar 2, 2021·Current Opinion in Genetics & Development·Yoshinori Tomoyasu
Jun 19, 2018·Arthropod Structure & Development·Courtney M Clark-HachtelYoshinori Tomoyasu
Jul 8, 2019·ACS Biomaterials Science & Engineering·Jafar HasanPrasad K D V Yarlagadda

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