Variants modulating the expression of a chromosome domain encompassing PLAG1 influence bovine stature - PubMed

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• PMID: 21516082
• DOI: 10.1038/ng.814

Variants modulating the expression of a chromosome domain encompassing PLAG1 influence bovine stature

Latifa Karim et al. Nat Genet. 2011 May.

Abstract

We report mapping of a quantitative trait locus (QTL) with a major effect on bovine stature to a ∼780-kb interval using a Hidden Markov Model-based approach that simultaneously exploits linkage and linkage disequilibrium. We re-sequenced the interval in six sires with known QTL genotype and identified 13 clustered candidate quantitative trait nucleotides (QTNs) out of >9,572 discovered variants. We eliminated five candidate QTNs by studying the phenotypic effect of a recombinant haplotype identified in a breed diversity panel. We show that the QTL influences fetal expression of seven of the nine genes mapping to the ∼780-kb interval. We further show that two of the eight candidate QTNs, mapping to the PLAG1-CHCHD7 intergenic region, influence bidirectional promoter strength and affect binding of nuclear factors. By performing expression QTL analyses, we identified a splice site variant in CHCHD7 and exploited this naturally occurring null allele to exclude CHCHD7 as single causative gene.

Comment in

• Cattle gain stature.

  Visscher PM, Goddard ME. Visscher PM, et al. Nat Genet. 2011 May;43(5):397-8. doi: 10.1038/ng.819. Nat Genet. 2011. PMID: 21522175 No abstract available.

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