期刊
NATIONAL SCIENCE REVIEW
卷 7, 期 6, 页码 964-977出版社
OXFORD UNIV PRESS
DOI: 10.1093/nsr/nwaa002
关键词
Manado pipefish; whole-genome sequencing; transposable elements; placenta-like structure; convergent evolution
资金
- National Natural Science Foundation of China [41825013, 41890853]
- Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0407]
- K. C. Wong Education Foundation
- Key Research Program of Frontier Sciences of CAS [ZDBS-LY-DQC004]
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2018PY03]
- Biomedical Research Council of A*STAR, Singapore
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.
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