1. Genomic scans for selection signatures revealed candidate genes for adaptation and production traits in a variety of cattle breeds.
- Author
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Saravanan, K.A., Panigrahi, Manjit, Kumar, Harshit, Parida, Subhashree, Bhushan, Bharat, Gaur, G.K., Dutt, Triveni, Mishra, B.P., and Singh, R.K.
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CATTLE breeds , *CATTLE breeding , *STRAINS & stresses (Mechanics) , *GENES , *NUCLEOTIDE sequencing , *DISEASE susceptibility - Abstract
Domestication and selection are the major driving forces responsible for the determinative genetic variability in livestock. These selection patterns create unique genetic signatures within the genome. BovineSNP50 chip data from 236 animals (seven indicine and five taurine cattle breeds) were analyzed in the present study. We implemented three complementary approaches viz. iHS (Integrated haplotype score), ROH (Runs of homozygosity), and F ST , to detect selection signatures. A total of 179, 56, and 231 regions revealed 518, 277, and 267 candidate genes identified by iHS, ROH, and F ST methods, respectively. We found several candidate genes (e.g., NCR3 , ARID5A , HIST1H2BN , DEFB4 , DEFB7 , HSPA1L , HSPA1B, and DNAJB4) related to production traits and the adaptation of indigenous breeds to local environmental constraints such as heat stress and disease susceptibility. However, further studies are warranted to refine the findings using a larger sample size, whole-genome sequencing, and/or high density genotyping. • The combination of various statistical approaches could facilitate the wider spectrum of detection of both recent and ancient selection signatures. • The identified candidate genes provide insights into the adaptation and production performance of various cattle breeds. • Our observations can provide valuable knowledge for GWAS, genomic selection, implementing breeding schemes and conservation programmes. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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