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• W3201211772 endingPage "101630" @default.
• W3201211772 startingPage "101630" @default.
• W3201211772 abstract "Our previous study on the ovarian transcriptomic analysis in Leizhou black duck revealed that the ESR2 gene was involved in hormone regulation in reproduction and the estrogen signaling pathway related to reproductive performance was enriched. This suggested that ESR2 may have a functional role in the reproductive performance of the Leizhou black duck. Thus, this study aimed at evaluating the polymorphism of the ESR2 gene and its association with egg-laying traits and the distribution pattern of ESR2 mRNA in laying and non-laying Leizhou black ducks. In this study, genomic DNA was extracted from blood samples of 101 Leizhou black ducks to identify single nucleotide polymorphisms (SNPs) of the ESR2 gene to elucidate molecular markers highly associated with egg-laying traits. Four each of laying and non-laying Leizhou black ducks were selected to collect different tissues to analyze the ESR2 gene expression. A total of 23 SNPs were identified and association analysis of the single SNP sites showed that SNPs g.56805646 T>C and exon 3-20G>A were significantly (P < 0.05) associated with egg weight. Ducks with CT and AG genotypes had significantly higher (P < 0.05) egg weights than their respective other genotypes. Haplotype association analysis of g.56805646 T>C and exon 3-20G>A showed that the haplotypes were significantly associated with egg weight. Higher egg weight was seen in individuals with H3H4 haplotypes. In the hypothalamus-pituitary-gonadal (HPG) axis, the results of qRT/PCR showed that ESR2 mRNA was significantly (P < 0.05) expressed in the ovaries of both duck groups than in the hypothalamus and pituitary. In the oviduct, ESR2 was significantly (P < 0.05) higher in the infundibulum and magnum of laying and non-laying ducks respectively. This study provides a molecular marker for selecting Leizhou black ducks for egg production. In addition, it offers theoretical knowledge for studying the related biological functions of the ESR2 gene at the cellular level." @default.
• W3201211772 created "2021-09-27" @default.
• W3201211772 creator A5002179062 @default.
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• W3201211772 creator A5060484839 @default.
• W3201211772 creator A5064626896 @default.
• W3201211772 date "2022-03-01" @default.
• W3201211772 modified "2023-09-26" @default.
• W3201211772 title "Polymorphism analysis and expression profile of the estrogen receptor 2 gene in Leizhou black duck" @default.
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• W3201211772 doi "https://doi.org/10.1016/j.psj.2021.101630" @default.
• W3201211772 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35033905" @default.
• W3201211772 hasPublicationYear "2022" @default.
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