Characterization of Partial Sequence of Myostatin Gene Exon 2 along with SNP detection in Indian Horse Breeds (Equus caballus).
Authors: Sonali, Giri Shiv Kumar, Unnati, Nayan Varij, Legha Ram Avatar, Pal Yash, Bhardwaj Anuradha
Journal: Journal of equine veterinary science
Summary
# Editorial Summary Myostatin (MSTN) regulates muscle development and has long been recognised as a key genetic marker for equine athletic potential, yet Indian horse breeds have never been systematically evaluated for MSTN polymorphisms. Researchers sequenced exon 2 of the MSTN gene in 60 horses across eight Indian breeds, identifying two transition mutations (T>C) at codon positions 12 and 13 on chromosome 18; these single nucleotide polymorphisms represent the first documented MSTN variants in Indian horse populations. The breed-specific haplotype patterns revealed unique genetic variation between breeds whilst showing relatively even gene distribution across the broader population, with phylogenetic analysis indicating that breed divergence aligns with their distinct geographical origins. These findings establish a genetic baseline for Indian breeds and suggest that MSTN genotyping could inform selection strategies for racing performance and breeding programmes, though practitioners should note that SNP presence alone is insufficient for predicting athletic merit without additional performance and phenotypic data. For farriers, veterinarians and coaches working with Indian horses, this research provides a foundation for more targeted performance assessment and conditioning protocols, particularly if breeders adopt MSTN profiling as part of their selection criteria.
Read the full abstract on PubMed
Practical Takeaways
- •Myostatin SNPs can serve as genetic markers to predict athletic performance potential in Indian horse breeds for breeding and racing selection programs
- •Breed-specific haplotype profiles may help identify performance-related genetic traits to inform training and competition suitability decisions
- •This baseline genetic characterization of Indian breeds enables future association studies linking MSTN variants to measurable performance outcomes in racing and endurance disciplines
Key Findings
- •T>C transition single nucleotide polymorphisms identified at two codon positions (T12C, T13C) in MSTN exon 2 on chromosome 18 across 60 Indian horse samples
- •Haplotype analysis revealed unique breed-level variation while the MSTN gene is equally distributed throughout the overall population
- •Phylogenetic analysis showed all eight Indian horse breeds are geographically distinct with specific regional distribution patterns
- •First characterization of MSTN gene variations in Indian horse breeds provides genetic markers for predicting racing and athletic performance