China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (6): 2082-2090.doi: 10.16431/j.cnki.1671-7236.2021.06.021

• Genetics and Breeding • Previous Articles     Next Articles

Genetic Effects Analysis of Polymorphism and Expression of SLC4A9 Gene on Eggshell Quality in Sansui Ducks

YANG Suan1,2, ZHANG Yiyu1,2, TAN Yuancheng1,2, WANG Yingtong1,2, YOU Minfang1,2, LIAO Chaomei1,2   

  1. 1. Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, College of Animal Science, Guizhou University, Guiyang 550025, China;
    2. Key Laboratory of Animal Genetics, Breeding and Reproduction of Guizhou Province, Guizhou University, Guiyang 550025, China
  • Received:2020-12-30 Online:2021-06-20 Published:2021-06-18

Abstract: In order to explore the genetic effects of solute carrier family 4 member 9 (SLC4A9) expression and polymorphism on the eggshell quality in duck,the expression levels of SLC4A9 gene in different tissues of Sansui ducks were detected by Real-time quantitative PCR,the SNP of SLC4A9 gene in Sansui ducks were directly sequenced by PCR products,and the genetic effect of SNP on the eggshell quality in Sansui ducks was analyzed.The results showed that the SLC4A9 gene mRNA was expressed to varying degrees in 10 tissues of Sansui ducks,with highly specific expression in heart and pancreas,moderate expression in kidney,and low expression in others.A total of 10 SNPs were detected among which three were located on exons and all were missense mutations(g.6803 C>T,g.7065 C>T and g.7089 C>G),and seven were located in introns (g.7162 C>G,g.11044 G>A,g.11090 T>C,g.11234 C>T,g.11261 C>T,g.11349 C>T and g.11403 G>A).Among them,g.6803 C>T mutation led to alanine (GCG) turning into valine (GTG),g.7065 C>T mutation caused alanine (GCC) to valine (GTC),g.7089 C>G mutation caused alanine (GCA) to glycine (GGA).χ2 test found that g.6803 C>T,g.11090 T>C and g.11349 C>T deviated from Hardy-Weinberg equilibrium (P<0.05),and the genotype distribution of the other SNPs were in accordance with Hardy-Weinberg equilibrium (P>0.05).Correlation analysis results showed that the eggshell strength of CC and CT genotypes at g.11349 C>T was significantly higher than that of TT genotype (P<0.05).In conclusion,10 SNPs of SLC4A9 gene all affected the eggshell quality of Sansui ducks,and g.11349 C>T reached a significant level,which could provide reference for the improvement of eggshell quality and the selection of genetic markers in ducks.

Key words: Sansui ducks; SLC4A9 gene; organization expression; polymorphism; eggshell quality

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