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| Advances in research on carp subgenome adaptive evolution and breeding mechanism |
On September 30, the large aquatic genetic data research and application innovation team of the Biotechnology Research Center of the Chinese Academy of Fishery Sciences, in conjunction with the Heilongjiang Fisheries Research Institute of the Chinese Academy of Fishery Sciences, the Freshwater Fisheries Research Center, and North China University of Technology —Genetics" published research papers online
.
This study took allotetraploid carp and crucian carp as the research objects.
The team improved the genome maps of common carp and crucian carp, and assembled high-quality genomes of bream-like bream and tiger skin fish for the first time
.
(1) This study has improved the carp genome map, and compared with the previous carp genome map, important quality parameters have been significantly improved
Studies have speculated that the A and B subgenomes of the allotetraploid carp and crucian carp are derived from different ancestral species, and it is believed that the subfamily Carp subfamily, including tiger skin fish, is the B subgenome ancestor species of carp and crucian carp
.
Tiger fish genome using the carp, crucian carp A and B are each divided into two sets of chromosomes subgenomic
The study also found that while convergent evolution occurs between subgenomes, there are also ten expression divergence strategies, which are analyzed in detail in the paper
.
After the genetic information of allotetraploids is doubled, through a variety of expression divergence strategies, the subgenomes can play more flexibly with each other's functions, making the tetraploid fish more tolerant of external changes
In addition, the team used Furui carp, which grows fast and has a high survival rate, as the research material
.
In order to ascertain the genetic effects of genomic structural variation on the traits of Furui carp, researchers re-sequenced and annotated the gene functions of Songpu mirror carp, Huanghe carp and Furui carp No.
Related paper information: https://doi.
https://doi.
org/10.
1038/s41588-021-00933-9
