China Animal Husbandry and Veterinary Medicine ›› 2019, Vol. 46 ›› Issue (10): 2998-3006.doi: 10.16431/j.cnki.1671-7236.2019.10.021

• Genetics and Breeding • Previous Articles     Next Articles

Haplotype Detection and mRNA Expression Level Analysis of ASIP Gene in Skin of American Mink (Neovison vison)

SONG Xingchao1, LIU Linling1, WANG Shuming2, SONG Shanshan1, XU Chao1, YANG Tongao1, LIU Zongyue1, CONG Bo1, ZHANG Zhiming2, YANG Fuhe1, PENG Yinghua1   

  1. 1. State Key Laboratory of Special Economic Animal Molecular Biology, Key Laboratory of Genetics, Breeding and Reproduction of Special Economic Animals, Ministry of Agriculture and Rural Affairs, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China;
    2. Dalian Mingwei Mink Limited Corporation, Dalian 116100, China
  • Received:2019-01-25 Online:2019-10-20 Published:2019-10-21

Abstract: The aim of this study was to explore the effects of haplotype formed by single nucleotide polymorphisms (SNPs) of agouti signaling protein (ASIP) gene and analyze the association of mRNA differential expression with coat color phenotype in American mink (Neovison vison).The SNPs haplotypes of ASIP gene in Jinzhou Black mink,Red eye White mink and Mingwei Silverblue mink were detected by PCR and Sanger direct sequencing technology.The mRNA expression levels of ASIP gene in skin tissue with three kinds of coat color were detected by Real-time PCR,and then the correlation between haplotypes,mRNA differential expression levels and coat color traits were analyzed.The results showed that a total of 10 SNPs were detected in 301 samples,of which 4 SNPs (G18A,A159G,G235T and C1189T) were located in intron 2,6 SNPs(C252T,A290C,G298C,A340G,T343C and T379C) were located in partial intron 3.10(Hap1-Hap10) and 4 (Hap1-Hap4) haplotypes were formed by 4 and 6 SNPs,respectively,of which Hap1 (GAGC) and Hap2 (GAGT) were shared haplotypes in intron 2,Hap2 (CCCGCC) was the main haplotype in Mingwei Silverblue mink.5 loci (A290C,G298C,A340G,T343C and T379C) were in complete linkage disequilibrium.Real-time PCR results showed that the mRNA expression levels of ASIP gene of Jinzhou Black mink and Mingwei Silverblue mink were 1.25 and 0.95 times,which were higher than that of Red eye White mink,there was no significant difference among three coat colors (P>0.05).The results indicated that the molecular mechanism of ASIP gene regulating the formation of mink coat color phenotype might be different.

Key words: mink; ASIP gene; haplotype; differential expression; coat color

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