The Atlantic salmon genome published
CEES researchers in Nature
CEES researchers Sissel Jentoft, Lex Nederbragt, Ave Tooming-Klunderud and Kjetill S. Jakobsen are co-authors on the article The Atlantic salmon genome provides insights into rediploidization by Lien et al., published online
The high-quality tetraploid Atlantic salmon genome was generated from a double haploid with an array of sequencing technologies including long-read PacBio reads. The CEES researchers have been involved in creating the double haploid and the PacBio approach. The genome assembly reveals that the rediploidization process of the original tetraploid genome involved large genomic reorganizations, transposon-mediated repeat expansions and an unexpetcted degree of neofunctionalization of orthologous genes. Another major finding was that genes retained as duplicated after the ancient teleost-specific whole genome duplication (320 million years ago) were not more frequently retained after the salmonid- specific genome duplication. The Atlantic salmon genome assembly will serve as a reference genome for the study of other salmonids and re-sequencing of Atlantic salmon for ecological, evolutionary and aquaculture purposes.