The sterlet sturgeon genome sequence and the mechanisms of segmental rediploidization.

Details

Ressource 1Download: 32231327_BIB_E5D3059F527A.pdf (2116.13 [Ko])
State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_E5D3059F527A
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The sterlet sturgeon genome sequence and the mechanisms of segmental rediploidization.
Journal
Nature ecology & evolution
Author(s)
Du K., Stöck M., Kneitz S., Klopp C., Woltering J.M., Adolfi M.C., Feron R., Prokopov D., Makunin A., Kichigin I., Schmidt C., Fischer P., Kuhl H., Wuertz S., Gessner J., Kloas W., Cabau C., Iampietro C., Parrinello H., Tomlinson C., Journot L., Postlethwait J.H., Braasch I., Trifonov V., Warren W.C., Meyer A., Guiguen Y., Schartl M.
ISSN
2397-334X (Electronic)
ISSN-L
2397-334X
Publication state
Published
Issued date
06/2020
Peer-reviewed
Oui
Volume
4
Number
6
Pages
841-852
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Sturgeons seem to be frozen in time. The archaic characteristics of this ancient fish lineage place it in a key phylogenetic position at the base of the ~30,000 modern teleost fish species. Moreover, sturgeons are notoriously polyploid, providing unique opportunities to investigate the evolution of polyploid genomes. We assembled a high-quality chromosome-level reference genome for the sterlet, Acipenser ruthenus. Our analysis revealed a very low protein evolution rate that is at least as slow as in other deep branches of the vertebrate tree, such as that of the coelacanth. We uncovered a whole-genome duplication that occurred in the Jurassic, early in the evolution of the entire sturgeon lineage. Following this polyploidization, the rediploidization of the genome included the loss of whole chromosomes in a segmental deduplication process. While known adaptive processes helped conserve a high degree of structural and functional tetraploidy over more than 180 million years, the reduction of redundancy of the polyploid genome seems to have been remarkably random.
Keywords
Animals, Chromosomes, Fishes/genetics, Genome, Phylogeny, Polyploidy
Pubmed
Web of science
Open Access
Yes
Create date
04/04/2020 15:39
Last modification date
30/04/2021 6:15
Usage data