ArticleJournal of applied genetics2019
Exome sequencing in genomic regions related to racing performance of Quarter Horses.
Article in Journal of applied genetics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 11 citations in OpenAlex.
- Review: Genomic insights into the adaptive traits and stress resistance in modern horses.Stress biology · 2026Review
- Broadening the ARMC2 mutational phenotype: linking multiple morphological abnormalities of the Flagella to Pulmonary Manifestations in Primary Ciliary Dyskinesia.Reproductive biology and endocrinology : RB&E · 2025Article
- Genome-wide epigenetic modifications in sports horses during training as an adaptation phenomenon.Scientific reports · 2023Article
- Article
- Article
- Functional Role of AKNA: A Scoping Review.Biomolecules · 2021Article
- Ten years of the horse reference genome: insights into equine biology, domestication and population dynamics in the post-genome era.Animal genetics · 2019Review
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Among horses selected for speed, the racing line of Quarter Horses is characterized by high performance in sprint races, with these animals being considered the fastest horses in the world. However, few studies have investigated in more detail the polymorphisms and genes that act on this trait. The objective of this study was to analyze exomes and UTRs in regions previously associated with this trait by GWAS in Quarter Horse racehorses with contrasting maximum speed index (SImax), prospecting causal gene polymorphisms that are related to or are in strong linkage disequilibrium with racing performance. Genotypic and phenotypic records from 360 animals of the racing line of Quarter Horses, previously genotyped with an SNP chip to obtain individual genomic estimated breeding values for performance, were used for the formation and sequencing of two groups of animals with contrasting racing performance (20 animals with superior SImax and 20 with inferior SImax). Two rapid runs were performed using two pools of libraries containing 20 and 19 samples randomly chosen among the 40 samples with contrasting SIs. A total of 1203 variants (1105 SNPs and 93 InDels) were identified in 33 regions of interest obtained previously by GWAS. Twenty-nine of the polymorphisms (24 SNPs and 5 InDels) were considered to be important based on three different and independent approaches: SIFT scores classified as deleterious (< 0.05), degree of impact on the consensus region of each polymorphism, and different allele frequencies identified by Fisher's exact test (p < 0.01) between the groups of horses with contrasting SImax. Thus, eight genes described as functional and positional candidates in previous studies (ABCG5, COL11A1, GEN1, SOCS3, MICAL1, SPTBN1, EPB41L3, and SHQ1) and nine new candidate genes (AKNA, ARMC2, FKBP15, LHX1, NOL10, TMEM192, ZFP37, FIG4, and HNRNPU), some of them with known function, were related to racing performance in Quarter Horses.
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