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March 25, 2026AnimalsOpen Access

Genetic Structure and Selective Signature Analysis of Xinjiang Local Sheep Populations

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Authors

CLChunyan LuoXinjiang Academy of Animal ScienceMYMarzia YasenXinjiang Academy of Animal ScienceFBFeng BaiXinjiang Academy of Animal Science

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Implication

This genomic analysis reveals genetic diversity and adaptations in sheep populations from Xinjiang, suggesting their evolutionary strategies.

Key Points

  • The study aims to investigate the genetic structure and adaptive mechanisms in local sheep breeds from Xinjiang.
  • Conducted whole-genome resequencing of 140 sheep from seven indigenous populations.
  • Identified 18,700,507 high-quality SNPs.
  • Performed genetic diversity analyses and population structure assessments.
  • Applied multiple selection signature detection methods including F_ST and π ratio.
  • All populations showed comparable genetic diversity with Turpan Black sheep having the highest observed heterozygosity.
  • Geographic isolation was found to drive genetic differentiation, notably in Kirgiz sheep.
  • Genes under selection in Kirgiz sheep were linked to stem cell regulation, DNA repair, and neural development.
  • Turpan Black sheep adaptations were associated with heat stress management and melanin biosynthesis.
  • Candidate genes related to growth and development were identified, revealing a complex genetic regulatory network.

Cite This Study

Luo et al. (2026) studied this question.

synapsesocial.com/papers/69c37b11b34aaaeb1a67d1d8https://doi.org/10.3390/ani16060985
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