A joint analysis strategy reveals genetic changes associated with artificial selection between egg-type and meat-type ducks

文献类型： 外文期刊

第一作者： Gu, H.

作者： Gu, H.;Zhu, T.;Qu, L.;Li, X.;Chen, Y.;Wang, L.;Lv, X.;Yang, W.;Jia, Y.;Jiang, Z.

作者机构：

关键词： egg duck; meat duck; RNA-seq; selective sweeps

期刊名称：ANIMAL GENETICS （ 影响因子：3.169； 五年影响因子：3.058 ）

ISSN： 0268-9146

年卷期： 2020 年 51 卷 6 期

页码：

收录情况： SCI

摘要： Egg-type ducks and meat-type ducks are predominantly commercial or indigenous and have been subjected to artificial directional selection. These two duck types differ substantially in body shape, production performance and reproductivity. However, the genetic changes associated with phenotypic differences remain unclear. Here, we compared the two duck types at the genomic and transcriptomic levels. We identified a large number of SNPs and genes in genomic divergent regions in terms ofF(ST)and theta pi values. The corresponding genes were mainly enriched in embryonic development function and metabolic pathway. RNA-seq analysis also revealed differential gene expression in the liver and gonads. The differentially expressed genes were functionally associated with signal transmission and substance metabolism respectively. Furthermore, we found that seven genes were related to differentiation between the two types by both g genome and transcriptome analysis and were plausible candidate genes. These genes were annotated to GO categories of cell development and disease immunity. These findings will enable a better understanding of the artificial selection history of meat and egg ducks and provide a valuable resource for future research on the breeding of these two lineages.

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