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Dissecting the genomic regions of selection on the X chromosome in different cattle breeds

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Abstract

Mammalian X and Y chromosomes independently evolved from various autosomes approximately 300 million years ago (MYA). To fully understand the relationship between genomic composition and phenotypic diversity arising due to the course of evolution, we have scanned regions of selection signatures on the X chromosome in different cattle breeds. In this study, we have prepared the datasets of 184 individuals of different cattle breeds and explored the complete X chromosome by utilizing four within-population and two between-population methods. There were 23, 25, 30, 17, 17, and 12 outlier regions identified in Tajima’s D, CLR, iHS, ROH, FST, and XP-EHH. Bioinformatics analysis showed that these regions harbor important candidate genes like AKAP4 for reproduction in Brown Swiss, MBTS2 for production traits in Brown Swiss and Guernsey, CXCR3 and CITED1 for health traits in Jersey and Nelore, and BMX and CD40LG for regulation of X chromosome inactivation in Nelore and Gir. We identified genes shared among multiple methods, such as TRNAC-GCA and IL1RAPL1, which appeared in Tajima’s D, ROH, and iHS analyses. The gene TRNAW-CCA was found in ROH, CLR and iHS analyses. The X chromosome exhibits a distinctive interaction between demographic factors and genetic variations, and these findings may provide new insight into the X-linked selection in different cattle breeds.

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The WIDDE database and the Dryad repository both contain the genotypic data used for this study (http://widde.toulouse.inra.fr/widde/).

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Acknowledgements

All the authors of the manuscript wish to thank the Director and Joint Director (Research), ICAR-Indian Veterinary Research Institute (IVRI), Izatnagar. We would also like to acknowledge ICAR-National Agricultural Science Fund (NASF) for their support and providing infrastructural facility.

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Correspondence to Manjit Panigrahi.

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Rajawat, D., Panigrahi, M., Nayak, S.S. et al. Dissecting the genomic regions of selection on the X chromosome in different cattle breeds. 3 Biotech 14, 50 (2024). https://doi.org/10.1007/s13205-023-03905-4

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  • DOI: https://doi.org/10.1007/s13205-023-03905-4

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