Cited by 34Genetic and phenotypic traits in livestockGenetic Mapping and Diversity in Plants and AnimalsGenetic Associations and Epidemiology

Whole-Genome Resequencing Reveals Selection Signal Related to Sheep Wool Fineness

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Zhang, Wentao, Jin, Meilin, Li, Taotao, Lu, Zengkui, Wang, Huihua, Yuan, Zehu, Wei, Caihong·2023·Animals

Abstract

Wool fineness affects the quality of wool, and some studies have identified about forty candidate genes that affect sheep wool fineness, but these genes often reveal only a certain proportion of the variation in wool thickness. We further explore additional genes associated with the fineness of sheep wool. Whole-genome resequencing of eight sheep breeds was performed to reveal selection signals associated with wool fineness, including four coarse wool and four fine/semi-fine wool sheep breeds. Multiple methods to reveal selection signals (Fst and θπ Ratio and XP-EHH) were applied for sheep wool fineness traits. In total, 269 and 319 genes were annotated in the fine wool (F vs. C) group and the coarse wool (C vs. F) group, such as LGR4, PIK3CA, and SEMA3C and NFIB, OPHN1, and THADA. In F vs. C, 269 genes were enriched in 15 significant GO Terms (p < 0.05) and 38 significant KEGG Pathways (p < 0.05), such as protein localization to plasma membrane (GO: 0072659) and Inositol phosphate metabolism (oas 00562). In C vs. F, 319 genes were enriched in 21 GO Terms (p < 0.05) and 16 KEGG Pathways (p < 0.05), such as negative regulation of focal adhesion assembly (GO: 0051895) and Axon guidance (oas 04360). Our study has uncovered genomic information pertaining to significant traits in sheep and has identified valuable candidate genes. This will pave the way for subsequent investigations into related traits.

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  • Variants of keratin and keratin-associated protein genes have been shown to associate with wool quality and are potential selection markers for livestock improvements.

    “Importantly, variants of these genes have been shown to associate with wool quality, and are potential selection markers for livestock improvements164–167.”

    From Chromosomal-level reference genome assembly of muskox (Ovibos moschatus) from Banks Island in the Canadian Arctic, a resource for conservation genomics (2024) · cites this paper as [167]

    The Introduction (page not provided) reports a mutant KRT74 linked to finer wool and says KAP genes may affect wool fineness. The Discussion §4.2 (page not provided) relates KRT and KAP expression to finer wool, but does not establish KAP variants as associated with wool quality or identify variants of these genes as selection markers for livestock improvement. (LLM, conf=0.83)

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Authors
Zhang, W., Jin, M., Li, T., Lu, Z., Wang, H., Yuan, Z., & Wei, C.
Affiliations
  • Chinese Academy of Agricultural Sciences (CN)
  • Lanzhou Institute of Husbandry and Pharmaceutical Sciences (CN)
  • Yangzhou University (CN)
Corresponding author
Wei, Caihong
Venue
Animals
Publisher
MDPI AG
Published
2023-09-16
Volume
13
Issue
18
Pages
2944
ISSN
2076-2615 (ISSN-L)
OpenAlex
W4386838427
Cited by
30
References
98
Citations by year
2026: 6 · 2025: 13 · 2024: 11
FWCI
5.64
Type
journal article
Language
en
Open access
Locations
  • Animals (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (32272851)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
Keywords
selection signals, fine wool, coarse wool, candidate genes, whole-genome resequencing, FST, XP-EHH, LGR4, PIK3CA, SEMA3C, NFIB, OPHN1, THADA, inositol phosphate metabolism, axon guidance, focal adhesions, gene ontology enrichment, KEGG pathways

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