Single nucleotide polymorphisms of Kit gene in Chinese indigenous horses.

The research investigates the variations found within the Kit gene in fourteen different breeds of domestic horses in China. It catalogs the presence of six specific Single Nucleotide Polymorphisms (SNPs) and their impact on the diversity in Chinese horse breeds.

Objective of the Research

The study aimed to analyze the many variations of the Kit gene found in different breeds of domestic horses in China. The Kit gene largely influences the white coat color in horses and has a crucial role in melanoblast survival.

Methods Employed in the Research

• The researchers conducted a thorough mutation analysis involving all 21 exons, or segments of a DNA or RNA molecule containing information coding for a protein or peptide sequence, of the Kit gene across 14 different Chinese domestic horse breeds.
• They identified six SNPs at different locations within the Kit gene.
• Post identification, the researchers genotyped these SNPs in 632 Chinese horses using PCR-RFLP (Polymerase Chain Reaction – Restriction Fragment Length Polymorphism) or direct sequencing techniques.

Findings of the Research

• The six SNPs identified in the study defined a total of 18 haplotypes, indicative of significant haplotype diversity among Chinese horses.
• The mutant alleles and haplotypes were evenly shared among different horse breeds.
• There were lesser mutations detected in Chinese horses compared to those from abroad, intriguingly suggesting that Chinese horses could be part of a more ancient genetic pool.

Significance of the Research

The findings from the study present essential genetic information that contributes to evaluating the genetic diversity of the Kit gene in indigenous Chinese horse breeds. This research can help understand the lineage and evolutionary history of these horse breeds and can be beneficial in future breeding programs.