Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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The +1316 T/T Genotype in the Exon 3 of Uncoupling Protein Gene is Associated with Daily Percent Lay in Korean Native Chicken

한국 재래 닭의 Uncoupling Protein 유전자 Exon 3에서의 +1316 T/T 유전자형이 산란율에 미치는 효과 분석

  • Oh J. D. (Genomic Informatics Center, Hankyong National University) ;
  • Lee J. H. (Genomic Informatics Center, Hankyong National University) ;
  • Hong Y. S. (Genomic Informatics Center, Hankyong National University) ;
  • Lee S. J. (Genomic Informatics Center, Hankyong National University) ;
  • Lee S. G. (Genomic Informatics Center, Hankyong National University) ;
  • Kong H. S. (Animal Products Grading Service) ;
  • Sang B. D. (National Livestock Research Institute, RDA) ;
  • Choi C. H. (National Livestock Research Institute, RDA) ;
  • Cho B. W. (Department of Animal Science, Miryang National University) ;
  • Jeon G. J. (Genomic Informatics Center, Hankyong National University) ;
  • Lee H. K. (Genomic Informatics Center, Hankyong National University)
  • Published : 2005.12.01
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Abstract

Uncoupling protein(UCP) is expressed exclusively in brown adipose tissue(BAT). It is blown to uncouple phosphorylation from oxidation and hence to be involved in energy metabolism and heat production, especially under cold exposure. In the present study, we identified single nucleotide polymorphism(SNP) in exon 3 of avUCP gene in Korean native chicken(KNC) population. It was detected a SNP T+1316C in exon 3 of avUCP gene by sequence analysis in KNC population. For PCR-RFLP analysis of the SNP T+1316C, used by AP III restriction enzyme. The result of PCR-RFLP analysis showed that allele T has two fragments of 255 bp and 86 bp, and allele C has only one fragment of 341 bp. The genotype frequencies were TT type, 0.7875; TC type, 0.1875 and CC type, 0.025; and the frequencies of allele T and C were 0.881 and 0.119, respectively in KNC population. Next study was conducted to investigate the effect of the SNP in avUCP gene on economic traits in the KNC population. The TT genotype had a significant higher daily percent lay(84.61) than CC genotype(p<0.05) in KNC population. This study may be useful for genetic studies of avCUP gene and selection on daily percent lay of KNC.

Uncoupling protein(UCP)은 갈색 지방세포에서 특이적으로 발현하고 있으며 복잡한 세포의 열 생산 작용에 관여한다고 알려져 있다. 본 연구는 한국 재래 닭 집단의 UCP 유전자 내에 존재하는 SNP를 검출하였다. 한국 재래 닭 집단의 UCP유전자 exon 3지역의 염기서열 분석 결과 1316 bp에서 T염기가 C염기로 치환되어짐을 확인하였다. T+11316C 지역의 PCR-RFLP 분석을 위해 제한효소 Afl III를 사용하였다. 한국 재래닭 집단내 유전자형 빈도는 TT가 0.7875, TC가 0.1875 그리고 CC가 0.025로 검출되었으며 대립유전자의 빈도는 T가 0.881 그리고 C가 0.119로 나타났다. 또한 검출된 SNP가 경제형질에 미치는 영향을 분석한 결과 한국 재래 닭 집단의 T/T 유전자형과 C/C유전자형에서 일당 산란율에서 통계적으로 유의한 차이가 있음을 확인하였다. 본 연구의 결과는 향후 더 많은 UCP 유전자와 관련된 연구와 한국 재래 닭의 육종 전략에 도움이 될 것으로 사료된다.

Keywords

References

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