Coupled genomic evolutionary histories as signatures of organismal innovations in Cephalopods co-evolutionary signatures across levels of genome organization may shed light on functional linkage and origin of Cephalopod novelties

Ritschard, Elena A., Whitelaw, Brooke, Albertin, Caroline B., Cooke, Ira R., Strugnell, Jan M., and Simakov, Oleg (2019) Coupled genomic evolutionary histories as signatures of organismal innovations in Cephalopods co-evolutionary signatures across levels of genome organization may shed light on functional linkage and origin of Cephalopod novelties. BioEssays, 41. 1900073.

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Abstract

How genomic innovation translates into organismal organization remains largely unanswered. Possessing the largest invertebrate nervous system, in conjunction with many species-specific organs, coleoid cephalopods (octopuses, squids, cuttlefishes) provide exciting model systems to investigate how organismal novelties evolve. However, dissecting these processes requires novel approaches that enable deeper interrogation of genome evolution. Here, the existence of specific sets of genomic co-evolutionary signatures between expanded gene families, genome reorganization, and novel genes is posited. It is reasoned that their co-evolution has contributed to the complex organization of cephalopod nervous systems and the emergence of ecologically unique organs. In the course of reviewing this field, how the first cephalopod genomic studies have begun to shed light on the molecular underpinnings of morphological novelty is illustrated and their impact on directing future research is described. It is argued that the application and evolutionary profiling of evolutionary signatures from these studies will help identify and dissect the organismal principles of cephalopod innovations. By providing specific examples, the implications of this approach both within and beyond cephalopod biology are discussed.

Item ID: 61247
Item Type: Article (Research - C1)
ISSN: 1521-1878
Keywords: Cephalopod, gene duplication, genome rearrangement, novel gene, organismal innovation
Copyright Information: ©2019 The Authors. BioEssays published by Wiley Periodicals, Inc. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Funders: Austrian Science Fund, Stazione Zoologica Anton Dohrn
Projects and Grants: ASF Grant no. P30686-B29
Date Deposited: 18 Dec 2019 08:02
FoR Codes: 06 BIOLOGICAL SCIENCES > 0604 Genetics > 060408 Genomics @ 50%
06 BIOLOGICAL SCIENCES > 0604 Genetics > 060409 Molecular Evolution @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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