Whole-genome resequencing of Russian sturgeon (Acipenser gueldenstaedtii) reveals selection signatures associated with caviar color
文献类型： 外文期刊
作者： Song, Hailiang 1 ; Dong, Tian 1 ; Wang, Wei 1 ; Yan, Xiaoyu 1 ; Jiang, Boyun 3 ; Xu, Shijian 3 ; Hu, Hongxia 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Fisheries Sci Inst, Beijing 100068, Peoples R China
2.Beijing Key Lab Fisheries Biotechnol, Beijing 100068, Peoples R China
3.Hangzhou Qiandaohu Xunlong Scitech Co Ltd, Hangzhou 311700, Peoples R China
4.Minist Agr & Rural Affairs, Key Lab Sturgeon Genet & Breeding, Hangzhou 311799, Peoples R China
关键词： Acipenser gueldenstaedtii; Whole-genome resequencing; Selection signatures; Caviar color
期刊名称：AQUACULTURE （ 影响因子：4.5； 五年影响因子：4.6 ）
ISSN： 0044-8486
年卷期： 2024 年 582 卷
页码：
收录情况： SCI
摘要： Russian sturgeon, Acipenser gueldenstaedtii, a primitive freshwater fish, holds high economic value as the source of caviar. Remarkably, the economic significance of gold caviar surpasses that of its black counterpart. However, the genetic basis underlying the color variations in caviar remains unexplored. In this study, we conducted whole-genome resequencing of 62 individuals from gold caviar (G) and black caviar (B) populations, achieving an average sequencing depth of approximately 12.21x, and each individual produced approximately 32.47 million high-quality single nucleotide polymorphisms (SNPs). By combining FST and XPEHH methods, we identified 1138 candidate selection regions spanning 26.7 Mb, encompassing 771 genes. Furthermore, significantly enriched GO terms and KEGG pathways were related to pigmentation (e.g., Protein digestion and absorption and Retinol metabolism, etc.) and immunity (e.g., Purine metabolism, Phagosome and Vibrio cholerae infection). Based on the findings, 12 genes (ACTA1, ADCY3, ADCY5, ATP6V1C1, ATP6V1H, CHST11, COL6A3, GART, KCNJ13, RDH10, KCNN4 and XDH) were identified as candidate genes that may affect caviar color. Furthermore, four genes (ATP6V1H, GART, RDH10 and KCNN4) detected simultaneously by FST and XPEHH methods were validated using KASP. This study lays the groundwork for unraveling the molecular mechanisms underlying caviar color and provides insights for the selective breeding of sturgeons with the desired gold caviar trait.
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