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2025年5月7日 星期三
农业生物技术学报  2019, Vol. 27 Issue (12): 2198-2206    DOI: 10.3969/j.issn.1674-7968.2019.12.011
  研究论文与报告 本期目录 | 过刊浏览 | 高级检索 |
基于RAD-seq技术分析边鸡保种群体的遗传进化
李国辉1, 魏清宇2, 张会永1, 殷建玫1, 薛倩1, 朱云芬1, 苏一军1, 王克华1, 邹剑敏1, 韩威1,*
1 江苏省家禽科学研究所 国家级地方鸡种基因库,扬州 225125;
2 山西省农业科学院 畜牧兽医研究所, 太原 030032
The Analysis on Genetic Evolution of Bian Chicken (Gallus gallus) Population Based on RAD-seq Technology
LI Guo-Hui1, Wei Qing-Yu2, ZHANG Hui-Yong1, YIN Jian-Mei1, XUE Qian1, ZHU Yun-Fen1, SU Yi-Jun1, WANG Ke-Hua1, ZOU Jian-Min1, HAN Wei1,*
1 National Chickens Genetic Resources, Jiangsu Institute of Poultry Science, Yangzhou 225125, China;
2 Sciences of Shanxi Agricultural Academy Institute of Animal Husbandry & Veterinary, Taiyuan 030032, China
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摘要 边鸡(Gallus gallus)是我国珍贵的地方鸡遗传资源。从分子水平上探究边鸡保种群的遗传多样性和分子遗传进化,对该品种资源的保护具有重要意义。本研究利用简化基因组测序(restriction-site associated DNA sequence, RAD-seq)检测边鸡群体的SNP标记,通过计算遗传统计量,分析比较边鸡群体与其他地方鸡种群体的遗传差异,并对进化过程中受到选择的基因进行功能注释。结果在边鸡保种群体中鉴定出SNP标记319 723个,保种群体的观察杂合度(observed heterozygosity, Ho)为0.193,核苷酸多样度(Pi)为0.231,近交系数为0.167,近交水平相对较高。连锁不平衡分析表明,边鸡群体各等位基因不存在强烈的连锁不平衡现象。模型聚类结果表明,边鸡与大骨鸡、安义瓦灰鸡及狼山鸡聚为一类,亲缘关系较近。对鉴定出的前200个受到强烈选择的基因进行基因本体论 (Gene Ontology, GO)和京都基因与KEGG注释分析,这些差异基因主要富集在代谢、神经受体—配体的相互作用、丝裂原活化蛋白激酶(mitogen-activated protein kinase, MAPK)、血管内皮生长因子等信号通路。基因功能分析的结果有助于了解边鸡的抗寒、耐缺氧、繁殖力、神经系统发育和抗逆性等特殊性状形成的分子机理,为我国地方鸡种的遗传进化、种质特性评价及品种保护提供理论依据。
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李国辉
魏清宇
张会永
殷建玫
薛倩
朱云芬
苏一军
王克华
邹剑敏
韩威
关键词 边鸡简化基因组测序(RAD-seq)选择信号遗传进化种质特性评价    
Abstract:Bian chicken (Gallus gallus) is a valuable genetic resource as a Chinese native chicken. It is of great significance to explore the genetic diversity and molecular genetic evolution of the population at the molecular level. In this study, RAD-seq simplified genome sequencing technology was employed to identify SNP markers in Bian chickens and compare the genetic differences between the Bian chicken population and the other breeds population by calculating the genetic statistics. Functional annotation was conducted for the selected genes during evolution. The results showed that 319 727 SNP markers were identified in Bian chickens. The average observed heterozygosity (0.193) and nucleotide diversity (0.231) were in the medium levels, but inbreeding coefficient(0.167) was relatively high.The linkage disequilibrium analysis showed that there was no strong linkage disequilibrium between the alleles of Bian chickens population. The clustering results of the structure model showed that Bian chicken and Dagu chicken, Anyi gray chicken, Langshan chicken had a close relationship and belonged to the same type. 200 selected genes were identified through the Fst and θπ testing. Gene Ontology (GO) and KEGG analysis showed that these selected genes were mainly enriched in metabolism, neuroactive ligand-receptor interaction, mitogen-activated protein kinase (MAPK), vascular smooth muscle contraction signal pathways. The function analysis of the genes including nitric oxide synthase (NOS2), heterochromatin protein 1 binding protein 3 (HP1BP3), aprataxin (APTX), prostaglandin endoperoxide synthase 2 (PTGS2) and phospholipase A2 group 4 type alpha (PLA2G4A) was helpful to understand the molecular mechanism of special traits such as cold resistance, hypoxia, fertility, nervous system development and stress resistance in Bian chicken. The results of the study provide molecular basis for the genetic evolution and evaluation and conservation of local chicken breeds.
Key wordsBian Chicken    Restriction-site associated DNA sequence (RAD-seq)    Selection signal    Genetic evolution    Germplasm characteristics evaluation
收稿日期: 2019-07-06     
ZTFLH:  S831.2  
基金资助:江苏省六大人才高峰高层次人才项目(NY-024)、江苏省公益类科研院所自主科研经费项目(BM2018026-1)、国家自然科学基金(No. 31572358)和现代农业产业技术体系建设专项资金(CARS-42-G03)
通讯作者: * hanwei830@163.com   
引用本文:   
李国辉, 魏清宇, 张会永, 殷建玫, 薛倩, 朱云芬, 苏一军, 王克华, 邹剑敏, 韩威. 基于RAD-seq技术分析边鸡保种群体的遗传进化[J]. 农业生物技术学报, 2019, 27(12): 2198-2206.
LI Guo-Hui, Wei Qing-Yu, ZHANG Hui-Yong, YIN Jian-Mei, XUE Qian, ZHU Yun-Fen, SU Yi-Jun, WANG Ke-Hua, ZOU Jian-Min, HAN Wei. The Analysis on Genetic Evolution of Bian Chicken (Gallus gallus) Population Based on RAD-seq Technology. 农业生物技术学报, 2019, 27(12): 2198-2206.
链接本文:  
http://journal05.magtech.org.cn/Jwk_ny/CN/10.3969/j.issn.1674-7968.2019.12.011     或     http://journal05.magtech.org.cn/Jwk_ny/CN/Y2019/V27/I12/2198
 
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