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SNP ofAHSA2gene in three cattle breeds using snapshot technology

文献类型： 外文期刊

作者： Cheng, Shu-Zhu 1 ; Guang-Xin, E. 1 ; Liu, Cheng-Li 1 ; Basang, Wang-Dui 2 ; Zhu, Yan-Bin 2 ; Na, Ri-Su 1 ; Han, Yan-Gu 1 ;

作者机构： 1.Southwest Univ, Coll Anim Sci & Technol, Chongqing Key Lab Forage & Herbivore, Chongqing Engn Res Ctr Herbivores Resource Protec, Chongqing 400716, Peoples R China

2.Tibet Acad Agr & Anim Husb Sci TAAAS, State Key Lab Barley & Yak Germplasm Resources &, Lhasa 850002, Tibet, Peoples R China

3.Qixia Manor Vet Stn, Qixia 265300, Shandong, Peoples R China

关键词： AHSA2gene; heat stress; snapshot technology; single-nucleotide polymorphism

期刊名称：JOURNAL OF GENETICS （ 影响因子：1.166； 五年影响因子：1.212 ）

ISSN： 0022-1333

年卷期： 2020 年 99 卷 1 期

页码：

收录情况： SCI

摘要： Droughtmaster is a tropical breed of beef cattle that can survive in hot climates and easily adapt to torrid environments. These traits are important in livestock breeding. In this study, we genotyped five single-nucleotide polymorphisms (SNPs) of theAHSA2gene from 190 cattle belonging to three different breeds (Droughtmaster, Angus and Simmental) by using snapshot technology. This work aimed to identify the valuable molecular marker of heat resistance in cattle. Results showed that Droughtmaster exhibited higher expected heterozygosity and polymorphic information content compared with the two other breeds. TheAHSA2-1 locus deviated from the Hardy-Weinberg equilibrium in the Droughtmaster breed (P< 0.05). Two SNPs in Droughtmaster diverged significantly from Angus and Simmental. The SNPs were identified asAHSA2-3 andAHSA2-4, which were closely linked to the three breeds based on pair-wiseF(ST).AHSA2-4 involved a missense mutation. In summary, the GG genotypes inAHSA2-3 andAHSA2-4 may be candidate genotypes associated with heat resistance traits and may serve as valuable genetic markers for breeding of heat-tolerant beef cattle in the future.

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