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Comparative genomics reveal shared genomic changes in syngnathid fishes and signatures of genetic convergence with placental mammals.
- Source :
-
National science review [Natl Sci Rev] 2020 Jun; Vol. 7 (6), pp. 964-977. Date of Electronic Publication: 2020 Jan 09. - Publication Year :
- 2020
-
Abstract
- Syngnathids (seahorses, pipefishes and seadragons) exhibit an array of morphological innovations including loss of pelvic fins, a toothless tubular mouth and male pregnancy. They comprise two subfamilies: Syngnathinae and Nerophinae. Genomes of three Syngnathinae members have been analyzed previously. In this study, we have sequenced the genome of a Nerophinae member, the Manado pipefish ( Microphis manadensis ), which has a semi-enclosed brood pouch. Comparative genomic analysis revealed that the molecular evolutionary rate of the four syngnathids is higher than that of other teleosts. The loss of all but one P/Q-rich SCPP gene in the syngnathids suggests a role for the lost genes in dentin and enameloid formation in teleosts. Genome-wide comparison identified a set of 118 genes with parallel identical amino acid substitutions in syngnathids and placental mammals. Association of some of these genes with placental and embryonic development in mammals suggests a role for them in syngnathid pregnancy.<br /> (© The Author(s) 2020. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.)
Details
- Language :
- English
- ISSN :
- 2053-714X
- Volume :
- 7
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- National science review
- Publication Type :
- Academic Journal
- Accession number :
- 34692118
- Full Text :
- https://doi.org/10.1093/nsr/nwaa002