数字农科院2.0

Genome-Wide Association Study Using Individual Single-Nucleotide Polymorphisms And Haplotypes For Erythrocyte Traits In Alpine Merino Sheep

文献类型： 外文期刊

作者： Zhu, SH; Guo, TT; Zhao, HC; Qiao, GY; Han, M; Liu, JB; Yuan, C; Wang, TX; Li, FW; Yue, YJ; Yang, BH

作者机构：

关键词： Genome-Wide Association Study; Single-Nucleotide Polymorphism; Haplotype; High-Altitude Hypoxia Adaptation; Erythrocyte Traits; Alpine Merino Sheep

期刊名称： FRONTIERS IN GENETICS

ISSN：

年卷期： 2020 年 11 卷

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收录情况： JCR（2021版）

摘要： Adaptation to high-altitude hypoxia is essential for domestic animals, such as yak, Tibetan chicken, and Tibetan sheep, living on high plateaus, as it ensures efficient oxygen absorption and utilization. Red blood cells are the primary medium for transporting oxygen in the blood. However, little is known about the genetic mechanism of erythrocyte traits. Genome-wide association studies (GWASs) based on single markers or haplotypes have identified potential mechanisms for genetic variation and quantitative traits. To identify loci associated with erythrocyte traits, we performed a GWAS based on the method of the single marker and haplotype in 498 Alpine Merino sheep for six erythrocyte traits: red blood cell count (RBC), hemoglobin (HGB), hematocrit (HCT), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), and RBC volume distribution width coefficient of variation (RWD_CV). Forty-two significant single-nucleotide polymorphisms (SNPs) associated with the six erythrocyte traits were detected by means of a single-marker GWAS, and 34 significant haplotypes associated with five erythrocyte traits were detected by means of haplotype analysis. We identified six genes (DHCR24, SPATA9, FLI1, PLCB1, EFNB2, andSH2B3) as potential genes of interest via gene function annotations, location, and expression variation. In particular,FLI1andPLCB1were associated with hematopoiesis and erythropoiesis, respectively. These results provide a theoretical basis for analyzing erythrocyte traits and high-altitude hypoxia adaptation in Alpine Merino sheep and will be a useful reference for future studies of plateau-dwelling livestock.

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