Identifying Candidate Genes For Hypoxia Adaptation Of Tibet Chicken Embryos By Selection Signature Analyses And Rna Sequencing
文献类型: 外文期刊
作者: Liu, XY; Wang, XC; Liu, J; Wang, XY; Bao, HG
作者机构:
关键词: Tibet Chicken; Hypoxia Adaptation; Signatures Of Selection; Rna Sequencing
期刊名称: GENES
ISSN:
年卷期: 2020 年 11 卷 7 期
页码:
收录情况: JCR(2021版)
摘要: The Tibet chicken (Gallus gallus) lives on the Qinghai-Tibet Plateau and adapts to the hypoxic environment very well. The objectives of this study was to obtain candidate genes associated with hypoxia adaptation in the Tibet chicken embryos. In the present study, we used the fixation index (Fst) and cross population extended haplotype homozygosity (XPEHH) statistical methods to detect signatures of positive selection of the Tibet chicken, and analyzed the RNA sequencing data from the embryonic liver and heart with HISAT, StringTie and Ballgown for differentially expressed genes between the Tibet chicken and White leghorn (Gallus gallus, a kind of lowland chicken) embryos hatched under hypoxia condition. Genes which were screened out by both selection signature analysis and RNA sequencing analysis could be regarded as candidate genes for hypoxia adaptation of chicken embryos. We screened out 1772 genes by XPEHH and 601 genes by Fst, and obtained 384 and 353 differentially expressed genes in embryonic liver and heart, respectively. Among these genes, 89 genes were considered as candidate genes for hypoxia adaptation in chicken embryos. ARNT, AHR, GSTK1 and FGFR1 could be considered the most important candidate genes. Our findings provide references to elucidate the molecular mechanism of hypoxia adaptation in Tibet chicken embryos.
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