Subgenome Partitioning and Polyploid Genome Evolution in the Loach Family Botiidae (Order Cypriniformes).

ABSTRACT: Vertebrates have undergone two rounds of whole-genome duplication (WGD), termed 1R and 2R, with a third, teleost-specific duplication (TSGD or 3R) occurring in ray-finned fishes. In the order Cypriniformes, additional lineage-specific WGDs have further contributed to species diversification. While polyploidy is well characterized in species like common carp and goldfish, other polyploid taxa-particularly loaches-remain understudied. Here, high-quality, chromosome-level genome assemblies are presented for two loach species: Sinibotia superciliaris (Golden Chinese Loach) and Parabotia fasciatus (Yichang Sand Loach). By integrating these genomes into a comparative framework with 20 other cypriniform species, key phylogenetic relationships are reconstructed, and introduce a novel subgenome par

SUBMITTER: Lv Y 

PROVIDER: S-EPMC12462953 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature