Whole-genome resequencing reveals selection signatures for caviar yield in Russian sturgeon (Acipenser gueldenstaedtii)
文献类型： 外文期刊
作者： Song, Hailiang 1 ; Zhu, Boyu 3 ; Dong, Tian 1 ; Wang, Wei 1 ; Hu, Mou 4 ; Yan, Xiaoyu 1 ; Xu, Shijian 4 ; Hu, Hongxia 1 ;
作者机构： 1.Fisheries Sci Inst, Beijing Acad Agr & Forestry Sci, Beijing 100068, Peoples R China
2.Beijing Key Lab Fisheries Biotechnol, Beijing 100068, Peoples R China
3.Univ Toronto, Fac Arts & Sci, Toronto, ON M5S1A1, Canada
4.Hangzhou Qiandaohu Xunlong Scitech Co Ltd, Hangzhou 311700, Peoples R China
关键词： Acipenser gueldenstaedtii; Caviar yield; Whole-genome resequencing; Selection signatures
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： 2023 年 568 卷
页码：
收录情况： SCI
摘要： Russian sturgeon, Acipenser gueldenstaedtii, an ancient fish, has great economic and nutritional value as a source of caviar. Although significant differences exist in the female reproductive capacity under artificial breeding conditions, genome-wide adaptations to domesticated female reproductive capacity have never been investi-gated. In this study, we conducted whole-genome resequencing of 35 and 37 individuals from high-fecundity (H) and low-fecundity (L) populations, respectively, with an average sequencing depth of about symbolscript resulting in approximately 32.57 million high-quality SNPs for each individual. Weir and Cockerham's FST combined with cross-population composite likelihood ratio (XP-CLR) identified a total of 1268 (56.6 Mb) candidate selection regions, containing 1279 genes. Further GO terms and KEGG pathways functional annotation suggested that 11 genes (TLR4, AKT3, BMPR1B, GDF7, IGF1R, HDAC7, HDAC9, MAP2K4, MAP2K7, PLCB4 and TGFBR2) were essential for caviar yield trait. In general, these candidate genes related to caviar yield identified in this study could contribute to understanding the genetic mechanism of caviar yield of Russian sturgeon and will also be of great significance for genome-assisted breeding of the sturgeons in the future.
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