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Whole-genome sequencing revealed genetic diversity and selection of Guangxi indigenous chickens

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  • Junli Sun
  • Tao Chen
  • Min Zhu
  • Ran Wang
  • Yingfei Huang
  • Qiang Wei
  • Manman Yang
  • Yuying Liao

Abstract

Guangxi chickens play a crucial role in promoting the high-quality development of the broiler industry in China, but their value and potential are yet to be discovered. To determine the genetic diversity and population structure of Guangxi indigenous chicken, we analyzed the whole genomes of 185 chickens from 8 phenotypically and geographically representative Guangxi chicken breeds, together with 12 RJFt, 12 BRA and 12 WL genomes available from previous studies. Calculation of heterozygosity (Hp), nucleotide diversity (π), and LD level indicated that Guangxi populations were characterized by higher genetic diversity and lower differentiation than RJFt and commercial breeds except for HGFC. Population structure analysis also confirmed the introgression from commercial broiler breeds. Each population clustered together while the overall differentiation was slight. MA has the richest genetic diversity among all varieties. Selective sweep analysis revealed BCO2, EDN3 and other candidate genes had received strong selection in local breeds. These also provided novel breeding visual and data basis for future breeding.

Suggested Citation

  • Junli Sun & Tao Chen & Min Zhu & Ran Wang & Yingfei Huang & Qiang Wei & Manman Yang & Yuying Liao, 2022. "Whole-genome sequencing revealed genetic diversity and selection of Guangxi indigenous chickens," PLOS ONE, Public Library of Science, vol. 17(3), pages 1-13, March.
    • Handle: RePEc:plo:pone00:0250392
    DOI: 10.1371/journal.pone.0250392
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    1. Carl-Johan Rubin & Michael C. Zody & Jonas Eriksson & Jennifer R. S. Meadows & Ellen Sherwood & Matthew T. Webster & Lin Jiang & Max Ingman & Ted Sharpe & Sojeong Ka & Finn Hallböök & Francois Besnier, 2010. "Whole-genome resequencing reveals loci under selection during chicken domestication," Nature, Nature, vol. 464(7288), pages 587-591, March.
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