Abstract
Nandan-Yao chicken is a Chinese native chicken with lower fat deposition and better meat quality. Fat deposition is a quite complex and important economic trait. However, its molecular mechanism is still unknown in chickens. In the current study, Nandan-Yao chicken was divided into two groups based on the rate of abdominal fat at 120 days old, namely the high-fat group and low-fat group. The total RNAs were isolated and sequenced by RNA sequencing (RNA-seq). After quality control, we gained 1222, 902, 784, 624, and 736 differentially expressed genes (DEGs) in abdominal fat, back skin, liver, pectoral muscle, and leg muscle, respectively. Analysis of Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) showed that significantly enriched GO term and KEGG signaling pathway mainly involved cytosolic ribosome, growth development, PPAR signaling pathway, Wnt signaling pathway, and linoleic acid metabolism in abdominal fat, back skin, and liver. While in pectoral muscle and leg muscle, it is mainly enriched in phosphatidylinositol signaling system, adrenergic signaling in cardiomyocytes, cytosolic ribosome, and cytosolic part. Sixteen genes were differentially expressed in all five tissues. Among them, PLA2G4A and RPS4Y1 might be the key regulators for fat deposition in Nandan-Yao chicken. The protein-protein interaction (PPI) network analysis of DEGs showed that PCK1 was the most notable genes. The findings in the current study will help to understand the regulation mechanism of abdominal fat and intramuscular fat in Nandan-Yao chicken and provide a theoretical basis for Chinese local chicken breeding.
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Abbreviations
- RNA-seq:
-
RNA sequencing
- QPCR:
-
quantitative real-time PCR
- DEG:
-
differentially expressed genes
- PPI:
-
protein-protein interaction
- FPKM:
-
fragments per kilobase of transcript per million mapped reads
- GO:
-
Gene Ontology
- KEGG:
-
Kyoto Encyclopedia of Genes and Genomes
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This work was supported in part by the National Natural Science Foundation of China (31660635) and the Science and Technology Major Project of Guangxi (GK AA17204027).
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Data curation: Cong Xiao, Tiantian Sun, Zuliang Yang, and Wenwen Xu. Formal analysis: Cong Xiao, Tiantian Sun, Zuliang Yang, and Xiurong Yang. Funding acquisition: Xiurong Yang. Investigation: Cong Xiao, Tiantian Sun, and Linghu Zeng. Methodology: Cong Xiao and Xiurong Yang. Project administration: Xiurong Yang. Resources: Jixian Deng and Xiurong Yang. Supervision: Jixian Deng and Xiurong Yang. Validation: Tiantian Sun and Juan Wang. Writing—original draft: Cong Xiao and Tiantian Sun. Writing—review and editing: Zuliang Yang and Xiurong Yang.
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Highlights
1. RNA-seq of Nandan-Yao chicken in five tissues: abdominal fat, back skin, liver, pectoral muscle, leg muscle
2. Differentially expressed genes function enrichment analysis
3. Protein-protein interaction analysis of differentially expressed genes
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Supplementary information
Table S1-S5 represent the statistic of differentially expressed genes in the liver, back skin, pectoral muscle, leg muscle, abdominal fat, respectively. Table S6-S10 represents the statistics of GO enrichment items in the liver, back skin, pectoral muscle, leg muscle, abdominal fat, respectively. Table S11-S15 represents the statistics of KEGG enrichment items in the liver, back skin, pectoral muscle, leg muscle, abdominal fat, respectively.
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Xiao, C., Sun, T., Yang, Z. et al. Transcriptome landscapes of differentially expressed genes related to fat deposits in Nandan-Yao chicken. Funct Integr Genomics 21, 113–124 (2021). https://doi.org/10.1007/s10142-020-00764-7
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DOI: https://doi.org/10.1007/s10142-020-00764-7