Abstract
Understanding how evolutionary factors related to climate adaptation and human selection have influenced the genetic architecture of domesticated animals is of great interest in biology. In the current study, by using 304 whole genomes from different geographical regions (including Europe, north Africa, Southwest Asia, east Asia, west Africa, south Asia, east Africa, Australia and Turkey), We evaluate global sheep population dynamics in terms of genetic variation and population structure. We further conducted comparative population analysis to study the genetic underpinnings of climate adaption to local environments and also morphological traits. In order to identify genomic signals under selection, we applied fixation index (FST) and also nucleotide diversity (θπ) statistical measurements. Our results revealed several candidate genes on different chromosomes under selection for local climate adaptation (e.g. HOXC12, HOXC13, IRF1, FGD2 and GNAQ), body size (PDGFA, HMGA2, PDE3A) and also morphological related traits (RXFP2). The discovered candidate genes may offer newel insights into genetic underpinning of regional adaptation and commercially significant features in local sheep.
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Data availability
The merged VCF file is available from the corresponding author upon reasonable request. The other data generated in this study have been presented as supplementary information with this manuscript. The fastq files used in this research work were acquired from the public sequence database.
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This study was performed as postdoctoral research at Shahid Bahonar University of Kerman, Kerman, Iran. H.A.N. was supported jointly by Shahid Bahonar University of Kerman and Iran National Science Foundation (INSF; Grant number: 4006174).
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This study was carried out with financial support from the Iran National Science Foundation (INSF; Grant number: 4006174) and Shahid Bahonar University of Kerman, Kerman, Iran.
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M.A.F. and H.A. N. conceived the project and designed the research. H.A.N. analyzed the data and drafted the manuscript. H.A.N, Z.A.G., M.A.F., revised the manuscript. All authors approved the final manuscript.
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Asadollahpour Nanaei, H., Amiri Ghanatsaman, Z., Farahvashi, M.A. et al. High-throughput DNA sequence analysis elucidates novel insight into the genetic basis of adaptation in local sheep. Trop Anim Health Prod 56, 150 (2024). https://doi.org/10.1007/s11250-024-04002-1
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DOI: https://doi.org/10.1007/s11250-024-04002-1