农科机构知识库联盟

Copy number variation identification and analysis of the chicken genome using a 60K SNP BeadChip

文献类型：外文期刊

第一作者： Rao, Y. S.

作者： Rao, Y. S.;Li, J.;Zhang, R.;Lin, X. R.;Xu, J. G.;Xie, L.;Xu, Z. Q.;Wang, L.;Gan, J. K.;Xie, X. J.;He, J.;Zhang, X. Q.;Li, J.;Zhang, R.;Lin, X. R.;Xu, J. G.;Xu, Z. Q.;Wang, L.;Gan, J. K.;Xie, X. J.;He, J.;Zhang, X. Q.;Rao, Y. S.;Xu, J. G.

作者机构：

关键词： chicken;copy number variation;SNP BeadChip;quantitative real-time PCR

期刊名称：POULTRY SCIENCE （影响因子：3.352；五年影响因子：3.679 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Copy number variation (CNV) is an important source of genetic variation in organisms and a main factor that affects phenotypic variation. A comprehensive study of chicken CNV can provide valuable information on genetic diversity and facilitate future analyses of associations between CNV and economically important traits in chickens. In the present study, an F2 full-sib chicken population (554 individuals), established from a cross between Xinghua and White Recessive Rock chickens, was used to explore CNV in the chicken genome. Genotyping was performed using a chicken 60K SNP BeadChip. A total of 1,875 CNV were detected with the PennCNV algorithm, and the average number of CNV was 3.42 per individual. The CNV were distributed across 383 independent CNV regions (CNVR) and covered 41 megabases (3.97%) of the chicken genome. Seven CNVR in 108 individuals were validated by quantitative real-time PCR, and 81 of these individuals (75%) also were detected with the PennCNV algorithm. In total, 274 CNVR (71.54%) identified in the current study were previously reported. Of these, 147 (38.38%) were reported in at least 2 studies. Additionally, 109 of the CNVR (28.46%) discovered here are novel. A total of 709 genes within or overlapping with the CNVR was retrieved. Out of the 2,742 quantitative trait loci (QTL) collected in the chicken QTL database, 43 QTL had confidence intervals overlapping with the CNVR, and 32 CNVR encompassed one or more functional genes. The functional genes located in the CNVR are likely to be the QTG that are associated with underlying economic traits. This study considerably expands our insight into the structural variation in the genome of chickens and provides an important resource for genomic variation, especially for genomic structural variation related to economic traits in chickens.

分类号： S8

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