Whole-genome resequencing of worldwide wild and domestic sheep elucidates genetic diversity, introgression and agronomically important loci

Lv, Feng-Hua, Cao, Yin-Hong, Liu, Guang-Jian, Luo, Ling-Yun, Lu, Ran, Liu, Ming-Jun, Li, Wen-Rong, Zhou, Ping, Wang, Xin-Hua, Shen, Min, Gao, Lei, Yang, Jing-Quan, Yang, Hua, Yang, Yong-Lin, Liu, Chang-Bin, Wan, Peng-Cheng, Zhang, Yun-Sheng, Pi, Wen-Hui, Ren, Yan-Ling, Shen, Zhi-Qiang, Wang, Feng, Wang, Yu-Tao, Li, Jin-Quan, Salehian-Dehkordi, Hosein, Hehua, Eer, Liu, Yong-Gang, Chen, Jian-Fei, Wang, Jian-Kui, Deng, Xue-Mei, Esmailizadeh, Ali, Dehghani-Qanatqestani, Mostafa, Charati, Hadi, Nosrati, Maryam, Štěpánek, Ondřej, Rushdi, Hossam E., Olsaker, Ingrid, Curik, Ino, Gorkhali, Neena A., Paiva, Samuel R., Caetano, Alexandre R., Ciani, Elena, Amills, Marcel, Weimann, Christina, Erhardt, Georg, Amane, Agraw, Mwacharo, Joram M., Han, Jian-Lin, Hanotte, Olivier, Periasamy, Kathiravan, Johansson, Anna M., Hallsson, Jón H., Kantanen, Juha, Coltman, David W., Bruford, Michael W. ORCID: https://orcid.org/0000-0001-6357-6080, Lenstra, Johannes A., Li, Meng-Hua and Nowick, Katja 2022. Whole-genome resequencing of worldwide wild and domestic sheep elucidates genetic diversity, introgression and agronomically important loci. Molecular Biology and Evolution 39 (2) , msab353. 10.1093/molbev/msab353

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Abstract

Domestic sheep and their wild relatives harbor substantial genetic variants that can form the backbone of molecular breeding, but their genome landscapes remain understudied. Here, we present a comprehensive genome resource for wild ovine species, landraces and improved breeds of domestic sheep, comprising high-coverage (∼16.10×) whole-genomes of 810 samples from 7 wild species and 158 diverse domestic populations. We detected, in total, ∼121.2 million single nucleotide polymorphisms (SNPs), ∼61 million of which are novel. Some display significant (P < 0.001) differences in frequency between wild and domestic species, or are private to continent-wide or individual sheep populations. Retained or introgressed wild gene variants in domestic populations have contributed to local adaptation, such as the variation in the HBB associated with plateau adaptation. We identified novel and previously reported targets of selection on morphological and agronomic traits such as stature, horn, tail configuration and wool fineness. We explored the genetic basis of wool fineness and unveiled a novel mutation (chr25: T7068586C) in the 3’-UTR of IRF2BP2 as plausible causal variant for fleece fiber diameter. We reconstructed pre-historical migrations from the Near Eastern domestication center to South-and-Southeast Asia, and found two main waves of migrations across the Eurasian Steppe and the Iranian Plateau in the Early and Late Bronze Ages. Our findings refine our understanding of genome variation as shaped by continental migrations, introgression, adaptation and selection of sheep.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences
Additional Information:	This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/)
Publisher:	Oxford University Press
ISSN:	0737-4038
Date of First Compliant Deposit:	12 January 2022
Date of Acceptance:	10 December 2021
Last Modified:	06 Jan 2024 02:45
URI:	https://orca.cardiff.ac.uk/id/eprint/146485

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