China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (2): 488-496.doi: 10.16431/j.cnki.1671-7236.2020.02.020

• Genetics and Breeding • Previous Articles     Next Articles

A Tissue Expression and Polymorphism of ATF3 Gene and Its Association with Meat Quality Traits in Yanbian Yellow Cattle

SHAO Jing, YIN Baozhen, JIAO Shi, ZHANG Jiasu, ZHANG Luomeng, GENG Chunyin, XIA Guangjun   

  1. Agricultural College of Yanbian University, Yanji 133002, China
  • Received:2019-06-02 Published:2020-02-28

Abstract: The aim of this study was to elucidate the association between tissue expression level and polymorphism of ATF3 gene and meat quality traits in Yanbian Yellow cattle.Using 70 healthy 30-month-old Yanbian Yellow cattle as the research object,Real-time PCR was used to compare the expression of ATF3 gene in 10 tissues including heart,liver,spleen,lung,kidney,hind leg muscle,eye muscle,sirloin,upper brain and subcutaneous fat tissue.The exon 4 of ATF3 gene was amplified,SNP was screened and verified by Sanger direct sequencing and PCR-RFLP methods,and the association with meat quality traits was analyzed.The results showed that the expression of ATF3 gene was detected in 10 tissues of Yanbian Yellow cattle,and the expression of ATF3 gene in subcutaneous adipose was extremely significantly higher than other tissues (P < 0.01).The relative expression of ATF3 gene in sirloin was extremely significantly positively correlated with IMF content (P < 0.01),and the coefficient of correlation was 0.996;There was a significant positive correlation between ATF3 gene expression and IMF content in eye muscle (P < 0.05),and the coefficient of correlation was 0.999.There were no significant correlation between the expression of ATF3 gene and IMF content in the upper brain and hind leg muscle (P > 0.05),and the correlation coefficients were 0.757 and 0.658,respectively.There was a G→C mutation at 1 428 bp of ATF3 gene,contained three genotypes:GG,GC and CC.The fat content and back fat thickness of GC and CC genotypes were significantly higher than GG genotype (P < 0.05),the marbling grade of GC and CC genotypes were extremely significantly better than GG genotype (P<0.01).The results demonstrated that the mutation site could be used as a potential molecular marker for meat quality traits,and ATF3 gene might be a candidate gene for fat deposition in Yanbian Yellow cattle.

Key words: Yanbian Yellow cattle; ATF3 gene; tissue expression profile; polymorphism; meat quality traits

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