The Atlantic salmon genome provides insights into rediploidization

The whole-genome duplication 80 million years ago of the common ancestor of salmonids (salmonid-specific fourth vertebrate whole-genome duplication, Ss4R) provides unique opportunities to learn about the evolutionary fate of a duplicated vertebrate genome in 70 extant lineages. Here we present a high-quality genome assembly for Atlantic salmon (Salmo salar), and show that large genomic reorganizations, coinciding with bursts of transposon-mediated repeat expansions, were crucial for the post-Ss4R rediploidization process. Comparisons of duplicate gene expression patterns across a wide range of tissues with orthologous genes from a pre-Ss4R outgroup unexpectedly demonstrate far more instances of…

• UD
  U.S. Department of Agriculture
• CD
  Corporación de Fomento de la Producción
• CC
  Compute Canada
• GO
  Government of Canada
• GB
  Genome British Columbia
• NF
  Norges Forskningsråd

  Awards: 208481, 225181, 226266, 221734, 221734/O30, 208481/F50
• NM
  Norges Miljø- og Biovitenskapelige Universitet
• F-
  Fiskeri - og havbruksnæringens forskningsfond
• NS
  Natural Sciences and Engineering Research Council of Canada