中国农业科学 ›› 2017, Vol. 50 ›› Issue (18): 3608-3619.doi: 10.3864/j.issn.0578-1752.2017.18.016

• 畜牧·兽医·资源昆虫 • 上一篇    下一篇

半番鸭与番鸭精巢组织差异表达转录组测序分析

李丽1,缪中纬1,辛清武1,朱志明1, 章琳俐1,庄晓东2,郑嫩珠1,3

 
  

  1. 1福建省农业科学院畜牧兽医研究所,福州 350013;2福建昌龙集团,福建漳州 363000; 3福建农林大学食品科学学院,福州351100
  • 收稿日期:2017-02-04 出版日期:2017-09-16 发布日期:2017-09-16
  • 通讯作者: 郑嫩珠,Tel:0591-83815170,E-mail: zhengnz@163.com
  • 作者简介:李丽,Tel:13960985616,E-mail: 576801792@qq.com
  • 基金资助:
    福建省农科院青年人才创新基金(YC2017-7);福建省省属公益类科研院所基本科研专项(2017R1023-5);福建省农科院所青年基金(MYQJ2015-5)

Transcriptome Analysis of Differential Gene Expression Associated with Testis Tissue in Mule Duck and Muscovy Duck

LI Li1, MIAO ZhongWei1, XIN QingWu1, ZHU ZhiMing1, ZHANG LinLi1, ZHUANG XiaoDong2, ZHENG NenZhu1,3   

  1. 1Institute of Animal Science and Veterinary Medicine, Fujian Academy of Agricultural Sciences, Fuzhou 350013; 2Fujian Changlong Group, Zhangzhou 363000, Fujian; 3Food college of Fujian Agriculture and Forestry University, Fuzhou 350002
  • Received:2017-02-04 Online:2017-09-16 Published:2017-09-16

摘要: 【目的】研究半番鸭与番鸭精巢组织转录组差异表达基因,为进一步阐明半番鸭不育的遗传机制奠定理论基础。【方法】利用转录组测序方法对半番鸭和番鸭的精巢组织进行研究,筛选其差异表达基因,并对其功能进行注释和荧光定量PCR(quantitative real-time PCR, QRT-PCR)验证。【结果】测序共获得43.84Gb Clean Data,组装后共获得193 535条Unigene。DESeq分析发现3 597个基因在两个鸭品种间差异表达,其中上调基因1 194个和下调基因2 403个,包括与生殖功能相关的基因,如成纤维细胞生长因子(fibroblast growth factor, FGF)、蛋白激酶A(protein kinaseA, PKA)、丝裂原活化蛋白激酶7(mitogen-activated protein kinase 7-like, partial, BMK)、生长因子受体结合蛋白2(growth factor receptor-bound protein 2, GRB2)、c-Jun氨基末端激酶(c-Jun N-terminal kinase, JNK)和肿瘤坏死因子受体超家族成员6(tumor necrosis factor receptor superfamily member 6, FAS)等。GO (gene Ontology)分析发现382个差异基因获得功能注释,其中97个基因涉及发育繁殖生物学过程。KEGG (kyoto Encyclopedia of Genes and Genomes)通路分析表明差异表达基因共富集到50 条信号通路中,其中17个通路显著富集,包括丝裂原活化蛋白激酶信号转导通路 (mitogen-activated protein kinase signaling pathway, MAPK)、甘油酯代谢(glycerolipid metabolism)以及钙信号途径 (calcium signaling pathway)信号通路等,与生殖功能密切相关的有促性腺激素释放激素信号通路(gonadotropin releasing hormone (GnRH) signaling pathway)和MAPK信号转导通路。经QRT-PCR验证,差异基因表达变化模式与转录组测序结果一致,测序结果可靠。【结论】在转录组水平上筛选出半番鸭和番鸭精巢组织差异表达基因,揭示了GnRH和MAPK信号通路在鸭的生殖活动中发挥了重要作用,为进一步探索半番鸭生殖系统的分化机理提供可靠的参考依据。

关键词: 半番鸭, 番鸭, 精巢组织, 差异表达基因, 转录组

Abstract: 【Objective】 The purpose of this study is to analyze the transcriptome differential gene expression of mule duck and muscovy duck testis, results of the study will lay a theoretical foundation for the further elucidation of the mechanisms of genetic sterility of mule duck. 【Method】 Transcriptome sequencing of testis from mule duck and muscovy duck was performed using the Illumina HiSeq 2500 platform with 2 biological replicates per duck breed, and verified by quantitative real-time PCR (QRT-PCR). 【Result】 After removing sequencing adaptors and the low-quality reads, a total of 43.84 Gb clean reads were obtained, the Q30 base percentage at 91.36% and above, and clean reads were assembled into 193 535 Unigene. The r2 Differential expression analysis showed that 3 597 differentially expressed genes were found between two duck breeds, including 1 194 up regulated genes and 2 403 down-regulated genes. Several genes were related with reproductive function, such as fibroblast growth factor, FGF, protein kinase A (PKA), mitogen-activated protein kinase 7-like, partial (BMK),growth factor receptor-bound protein 2 (GRB2), c-Jun N-terminal kinase (JNK )and tumor necrosis factor receptor superfamily member 6(FAS),and so on. With Gene Ontology (GO) annotation, 382 differentially expressed genes were identified including 97 related annotation genes involving development and reproduction biological process. Kyoto encyclopedia of genes and genomes (KEGG) pathway analysis showed that differentially expression genes annotated to 50 metabolic pathway, and 17 pathways were enriched significantly, such as calcium signaling pathway, glycerolipid metabolism and MAPK signaling pathway, and gonadotropin releasing hormone (GnRH) signaling pathway and MAPK signaling pathway associated with testis physiology and reproduction activities. Verified by QRT-PCR, the pattern of differential gene expression was consistent with the results of transcriptome sequencing, which showed the sequencing results were reliable. 【Conclusion】 Differentially expressed genes of mule duck and muscovy duck testis were screened by transcriptional analysis, revealed that the GnRH and MAPK signaling pathway play an important role in duck reproductive activities, which provide reliable reference for exploring the differentiation mechanism of reproductive system in mule duck.

Key words: mule duck, muscovy duck, testis tissue, differentially expressed genes, transcriptome