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Transcriptome analyses to reveal the dynamic change mechanism of pigeon magnum during one egg-laying cycle

文献类型： 外文期刊

作者： Lu, Lizhi 1 ; Xu, Xiaoqin 2 ; Du, Xue 1 ; Zeng, Tao 1 ; Yang, Tingbang 2 ; Chen, Yao 2 ; Tao, Zhengrong 1 ; Zhong, Shengl 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Anim Husb & Vet Sci, Hangzhou, Zhejiang, Peoples R China

2.China West Normal Univ, Inst Ecol, Nanchong 637009, Sichuan, Peoples R China

3.PingYang XingLiang Pigeon Farming Co Ltd, Wenzhou, Zhejiang, Peoples R China

4.PingYang AoFeng Pigeon Farming Co Ltd, Wenzhou, Zhejiang, Peoples R China

关键词： magnum; pigeon; RNA-seq; transcriptome

期刊名称：MOLECULAR REPRODUCTION AND DEVELOPMENT （ 影响因子：2.609； 五年影响因子：3.47 ）

ISSN： 1040-452X

年卷期：

页码：

收录情况： SCI

摘要： We analyzed the transcriptome of pigeon magnum in three stages (C1: pre-ovulation, C2: post-ovulation, C3: 5-6 days after ovulation) to elucidate the molecular and cellular events associated with morphological changes during the laying cycle. We observed that C1 was highly developed, apoptosis rate was highest in C2, and C3 attained the smallest size. Through RNA-sequencing, we obtained 54,764,938 (97.2%) high-quality clean reads that aligned to 20,767 genes. Gene expression profile analysis showed the greatest difference between C1 and C3; 3966 differentially expressed genes (DEGs) were identified, of which 2250 genes were upregulated and 1716 genes were downregulated in C1. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses revealed that protein processing and transport activities were prominent in C1, and upregulated genes included those related to signal recognition particle (SRP), signal recognition particle receptor (SRPR), translocon, GRP78, RRBP1, TRAP, TRAM1, and OST. Egg white protein-related gene expression was highest, withOVALYbeing the most highly expressed. In C2, apoptosis-related gene expression was higher than in C1, and fatty acid metabolism was active, which may be correlated with magnum tissue regression. Collagen- and laminin-related gene expression was prominent in C1 and C3, indicating roles in egg white protein generation and magnum reconstruction. PR gene expression was highest and exhibited drastic change in the three groups, indicating that PR and its regulation may be involved in changes in magnum morphology and function. Through the identification and functional analysis of DEGs and other crucial genes, this may contribute to understand the egg white protein production, magnum tissue regression, and magnum regeneration mechanisms.

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