Detection of loci under positive selection in Iranian Baluchi and Zel sheep breeds

Document Type : Research Paper

Authors

1 M. Sc. Student, Department of Animal Science, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran

2 Associate Professor, Department of Animal Science, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran

3 Assistant Professor, Department of Animal Science, College of Agriculture and Natural Resources, University of Arak, Iran

4 Assistant Professor, Department of Animal Science, Sari Agricultural Sciences and Natural Resources University, Iran

Abstract

Selective signatures in whole genome can help us to understand the mechanisms of selection and to identify the genomic regions that have been under natural or artificial selection during long years. The objective of this study was to identify the genomic regions that have been under artificial and natural selection in Baluchi and Zel sheep breeds. 143 sheep from Baluchi (N=96) and Zel breeds (N=47) have been genotyped using the Illumina ovine SNP50 BeadChip. Unbiased method of Weir and Cockerham’s FST (Theta) was used to detect the selection signatures in the R package. The results revealed seventeen genomic regions on 3, 4, 5, 7, 10, 11, 12, 13, 15, 18 and X chromosomes. Bioinformatics analysis demonstrated that some of these genomic regions overlapped with reported genes included in the development of the skeletal system and tail, cytology cells, immune system, sugar and energy metabolism and reproduction traits such as RPS6KA3, HOXB9, ESPL1, AAAS, FNDC3A genes. The results of the present study and the identified genomic regions can play an important role in study of the effect of the selection on population differentiation in two Baluchi fat-tailed and Zel thin-tailed breeds and subsequently, would direct us to identify the genomic regions associated with traits differentiate these breeds.

Keywords

References

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Iranian Journal of animal Science
Volume 47, Issue 3 - Serial Number 3
December 2016
Pages 389-398

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History

  • Receive Date: 25 May 2016
  • Revise Date: 31 July 2016
  • Accept Date: 10 September 2016

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