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Using Targeted Resequencing for Identification of Candidate Genes and SNPs for a QTL Affecting the pH Value of Chicken Meat
Swedish Univ Agr Sci, Dept Anim Breeding & Genet, SE-75007 Uppsala, Sweden..
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Växtekologi och evolution.
INRA, Rech Avicoles UR83, F-37380 Nouzilly, France.;Univ Edinburgh, Roslin Inst, Roslin EH25 9RG, Midlothian, Scotland.;Univ Edinburgh, R D SVS, Roslin EH25 9RG, Midlothian, Scotland..
INRA, Rech Avicoles UR83, F-37380 Nouzilly, France..
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2015 (engelsk)Inngår i: G3: Genes, Genomes, Genetics, ISSN 2160-1836, E-ISSN 2160-1836, Vol. 5, nr 10, s. 2085-2089Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Using targeted genetical genomics, a quantitative trait locus (QTL) affecting the initial postmortem pH value of chicken breast muscle (Pectoralis major) on chromosome 1 (GGA1) recently was fine-mapped. Thirteen genes were present in the QTL region of approximately 1 Mb. In this study, 10 birds that were inferred to be homozygous for either the high (QQ) or low (qq) QTL allele were selected for resequencing. After enrichment for 1 Mb around the QTL region, >500 x coverage for the QTL region in each of the 10 birds was obtained. In total 5056 single-nucleotide polymorphisms (SNPs) were identified for which the genotypes were consistent with one of the QTL genotypes. We used custom tools to identify putative causal mutations in the mapped QTL region from these SNPs. Four nonsynonymous SNPs differentiating the two QTL genotype groups were identified within four local genes (PRDX4, EIF2S3, PCYT1B, and E1BTD2). Although these are likely candidate SNPs to explain the QTL effect, 54 additional consensus SNPs were detected within gene-related regions (untranslated regions, splicing sites CpG island, and promoter regions) for the QQ birds and 71 for the qq birds. These could also play a role explaining the observed QTL effect. The results provide an important step for prioritizing among a large amount of candidate mutations and significantly contribute to the understanding of the genetic mechanisms affecting the initial postmortem pH value of chicken muscle.

sted, utgiver, år, opplag, sider
2015. Vol. 5, nr 10, s. 2085-2089
Emneord [en]
chicken muscle, pH values, QTL, next-generation sequencing, SNPs, nonsynonymous SNPs
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-265832DOI: 10.1534/g3.115.020552ISI: 000362505600016PubMedID: 26276381OAI: oai:DiVA.org:uu-265832DiVA, id: diva2:866616
Tilgjengelig fra: 2015-11-03 Laget: 2015-11-03 Sist oppdatert: 2017-12-01bibliografisk kontrollert

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