Chromosome-level Genome Assembly of Acanthopagrus latus Provides Insights into Salinity Stress Adaptation of Sparidae
Marine Biotechnology(2022)
Abstract
The yellowfin seabream, Acanthopagrus latus , is widely distributed throughout the Indo-West Pacific. This species, as a euryhaline Sparidae fish, inhabits in coastal environments with large and frequent salinity fluctuation. So the A. latus can be considered as an ideal species for elucidating the evolutionary mechanism of salinity stress adaption on teleost fish species. Here, a chromosome-scale assembly of A. latus was obtained with PacBio and Hi-C hybrid sequencing strategy. The final assembly genome of A. latus is 685.14 Mbp. The values of contig N50 and scaffold N50 are 14.88 Mbp and 30.72 Mbp, respectively. 29,227 genes were successfully predicted for A. latus in total. Then, the comparative genomics and phylogenetic analysis were employed for investigating the different osmoregulation strategies of salinity stress adaption on multiple whole genome scale of Sparidae species. The highly accurate chromosomal information provides the important genome resources for understanding the osmoregulation evolutionary pattern of the euryhaline Sparidae species.
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Key words
Euryhaline fish, Sparidae, Osmoregulation, Adaptive evolution
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