Hypothalamic and ovarian transcriptome profiling reveals potential candidate genes in low and high egg production of white Muscovy ducks (Cairina moschata)
文献类型： 外文期刊
作者： Bello, Semiu Folaniyi 1 ; Xu, Haiping 1 ; Guo, Lijin 1 ; Li, Kan 1 ; Zheng, Ming 1 ; Xu, Yibin 1 ; Zhang, Siyu 1 ; Bekele 1 ;
作者机构： 1.South China Agr Univ, Dept Anim Genet Breeding & Reprod, Coll Anim Sci, Guangzhou 510642, Guangdong, Peoples R China
2.Minist Agr, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Guangzhou 510642, Guangdong, Peoples R China
3.Minist Agr, Key Lab Chicken Genet Breeding & Reprod, Guangzhou 510642, Guangdong, Peoples R China
4.Wens Foodstuff Grp Co Ltd, Yunfu 527400, Guangdong, Peoples R China
关键词： egg production; transcriptome; gene expression; candidate genes; Muscovy duck
期刊名称：POULTRY SCIENCE （ 影响因子：3.352； 五年影响因子：3.679 ）
ISSN：
年卷期： 2021 年 100 卷 9 期
页码：
收录情况： SCI
摘要： In China, the low egg production rate is a major challenge to Muscovy duck farmers. Hypothala-mus and ovary play essential role in egg production of birds. However, there are little or no reports from these tissues to identify potential candidate genes responsible for egg production in White Muscovy ducks. A total of 1,537 laying ducks were raised; the egg production traits which include age at first egg (days), number of eggs at 300 d, and number of eggs at 59 wk were recorded. More -over, 4 lowest (LP) and 4 highest producing (HP) were selected at 59 wk of age, respectively. To understand the mechanism of egg laying regulation, we sequenced the hypothalamus and ovary transcriptome profiles in LP and HP using RNA-Seq. The results showed that the number of eggs at 300 d and number of eggs at 59 wk in the HP were significantly more (P < 0.001) than the LP ducks. In total, 106.98G clean bases were generated from 16 libraries with an average of 6.68G clean bases for each library. Further analysis showed 569 and 2,259 differentially expressed genes (DEGs) were identified in the hypothalamus and ovary between LP and HP, respectively. The KEGG pathway enrichment analysis revealed 114 and 139 pathways in the hypothalamus and ovary, respectively which includes Calcium signal -ing pathway, ECM-receptor interaction, Focal adhesion, MAPK signaling pathway, Apoptosis and Apelin signal -ing pathways that are involved in egg production. Based on the GO terms and KEGG pathways results, 10 poten-tial candidate genes (P2RX1, LPAR2, ADORA1, FN1, AKT3, ADCY5, ADCY8, MAP3K8, PXN, and PTTG1) were identified to be responsible for egg pro-duction. Further, protein-protein interaction was ana-lyzed to show the relationship between these candidate genes. Therefore, this study provides useful information on transcriptome of hypothalamus and ovary of LP and HP Muscovy ducks.
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