China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (11): 4279-4287.doi: 10.16431/j.cnki.1671-7236.2022.11.018

• Genetics and Breeding • Previous Articles     Next Articles

Polymorphism of MSRB3 Gene and Its Association Analysis with Antler Weight Traits in Sika Deer

ZHOU Ya, ZHANG Heyang, LIU Linling, LI Haodong, ZHENG Junjun, WANG Guiwu   

  1. Institute of Special Animal and Plant Sciences of Chinese Academy of Agricultural Sciences, Changchun 130112, China
  • Received:2022-04-10 Online:2022-11-05 Published:2022-11-04

Abstract: 【Objective】 This study aimed to explore the polymorphism of methionine sulfoxide reductase B3 (MSRB3) gene and its association with antler weight trait.【Method】 8 sika deer with high and 8 sika deer with low antler yield were selected, and the gene mutation sites were detected by direct DNA sequencing. The genetic variation of MSRB3 gene in 314 24-month-old sika deer was genotyped by MassARRAY® SNP typing technology, and the association analysis and haplotype analysis were carried out combined with the data of antler weight traits of sika deer.【Result】 A total of 6 SNPs were found in MSRB3 gene of sika deer, of which 2 SNPs were located in the exon region, and the mutations did not cause amino acid changes, belonging to synonymous mutations, and the other 4 SNPs were located in the intron region.The typing results showed that 4 samples were not successfully typed, and the remaining 310 samples were subjected to follow-up analysis.The observed heterozygosity of each locus was basically consistent with the expected heterozygosity.The heterozygosity of g.44455582 T>C, g.44455759 C>T, g.44414424 T>C, g.44350306 T>C and g.44340836 G>A were higher, which showed moderately polymorphic (0.25<PIC<0.5).And g.44340734 G>C locus had low heterozygosity, which showed low polymorphism (PIC<0.25).The results of chi-square test showed that g.44455759 C>T deviated from Hardy-Weinberg equilibrium (P<0.05), and the other 5 loci were in Hardy-Weinberg equilibrium (P>0.05).The results of association analysis between the different genotypes of 6 SNPs and antler weight of sika deer showed that the antler weight of TT genotype with g.44455582 T>C locus was extremely significantly higher than that of CC and TC genotypes (P<0.01).The haplotype analysis results showed that g.44340734 G>C and g.44350306 T>C, g.44455582 T>C and g.44455759 C>T were strongly linked, each producing 3 haplotypes.The antler weight of haplotype TC in Block 2 was significantly higher than that of haplotype CT (P<0.05).【Conclusion】 MSRB3 gene was closely related to the antler weight traits of sika deer, g.44455582 T>C locus and haplotype TC could be used as molecular markers for screening high-yield sika deer.

Key words: sika deer; MSRB3 gene; SNPs; antler weight

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