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Published August 2014 | Supplemental Material + Published + Accepted Version
Journal Article Open

The comb jelly opsins and the origins of animal phototransduction

Abstract

Opsins mediate light detection in most animals, and understanding their evolution is key to clarify the origin of vision. Despite the public availability of a substantial collection of well-characterized opsins, early opsin evolution has yet to be fully understood, in large part because of the high level of divergence observed among opsins belonging to different subfamilies. As a result, different studies have investigated deep opsin evolution using alternative data sets and reached contradictory results. Here, we integrated the data and methods of three, key, recent studies to further clarify opsin evolution. We show that the opsin relationships are sensitive to outgroup choice; we generate new support for the existence of Rhabdomeric opsins in Cnidaria (e.g., corals and jellyfishes) and show that all comb jelly opsins belong to well-recognized opsin groups (the Go-coupled opsins or the Ciliary opsins), which are also known in Bilateria (e.g., humans, fruit flies, snails, and their allies) and Cnidaria. Our results are most parsimoniously interpreted assuming a traditional animal phylogeny where Ctenophora are not the sister group of all the other animals.

Additional Information

© 2014 The Author(s). Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. Accepted: July 18, 2014. First published online: July 24, 2014. We would like to thank the three anonymous reviewers for their insightful comments. D.P. was partially supported by a Science Foundation Ireland research Frontiers Program grant to D.P. and James O. McInerney (EOB3106). T.H.O. was supported by a National Science Foundation grant (DEB-1146337).

Attached Files

Published - Genome_Biol_Evol-2014-Feuda-1964-71.pdf

Accepted Version - Genome_Biol_Evol-2014-Feuda-gbe-evu154.pdf

Supplemental Material - suppl_data.zip

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August 20, 2023
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