Population genomics and transcriptomics identify patterns of selection in two Liangshan chicken breeds.

IF 1.6 3区农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE

British Poultry Science Pub Date : 2025-03-12 DOI:10.1080/00071668.2025.2454964

T Wang, Z Cai, X Bai, H Zhong, D Li, B Chen

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引用次数: 0

Abstract

1. The global diversity of domestic chicken breeds, each exhibiting unique and specialised traits, offers a compelling context to explore how selection influences genetic variation patterns. China, with its myriad local chicken breeds, contributes significantly to this diversity.2. This study presents a population genome overview of genetic variations in 35 domestic chickens encompassing two distinct breeds from the Liangshan Prefecture in Sichuan Province. Through comparative genomic analysis of 17 red jungle fowls (RJF), genes associated with artificial selection in the Yanying and Luning chickens were identified. Further transcriptome comparison between these two breeds with Lohmann layers identified expression profiles of genes under selection.3. In total, 1,006 and 982 selected genes were identified in Yanying and Luning chickens, respectively, with 326 shared genes. These genes were primarily involved in immunity, energy metabolism, body size maintenance, and fertility. Transcriptomic analysis revealed tissue-specific gene expression, with Yanying showing immunity-related gene upregulation in ovaries compared to Lohmann chickens.4. These findings provide valuable insights into the genetic basis of breed-specific traits, offering potential targets for future breeding programmes to enhance chicken productivity and adaptability.

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群体基因组学和转录组学确定了两个凉山鸡品种的选择模式。

1. 家鸡品种的全球多样性，每个品种都表现出独特和专门的特征，为探索选择如何影响遗传变异模式提供了令人信服的背景。中国拥有无数的地方鸡品种，对这种多样性做出了重大贡献。本研究对来自四川省凉山州的35只家鸡（包括两个不同品种）的遗传变异进行了群体基因组综述。通过对17只红丛林鸡（RJF）的比较基因组分析，鉴定了燕英鸡和鲁宁鸡的人工选择相关基因。进一步比较这两个品种罗曼蛋鸡的转录组，确定了选择条件下基因的表达谱。在燕营鸡和鲁宁鸡中分别鉴定出1006个和982个选择基因，其中共有基因326个。这些基因主要与免疫、能量代谢、体型维持和生育有关。转录组学分析显示了组织特异性基因表达，与罗曼鸡相比，燕鹰鸡卵巢中免疫相关基因表达上调。这些发现为了解品种特异性性状的遗传基础提供了有价值的见解，为未来提高鸡的生产力和适应性的育种计划提供了潜在的目标。

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来源期刊

British Poultry Science 农林科学-奶制品与动物科学

CiteScore

3.90

自引率

5.00%

发文量

审稿时长

4.5 months

期刊介绍： From its first volume in 1960, British Poultry Science has been a leading international journal for poultry scientists and advisers to the poultry industry throughout the world. Over 60% of the independently refereed papers published originate outside the UK. Most typically they report the results of biological studies with an experimental approach which either make an original contribution to fundamental science or are of obvious application to the industry. Subjects which are covered include: anatomy, embryology, biochemistry, biophysics, physiology, reproduction and genetics, behaviour, microbiology, endocrinology, nutrition, environmental science, food science, feeding stuffs and feeding, management and housing welfare, breeding, hatching, poultry meat and egg yields and quality.Papers that adopt a modelling approach or describe the scientific background to new equipment or apparatus directly relevant to the industry are also published. The journal also features rapid publication of Short Communications. Summaries of papers presented at the Spring Meeting of the UK Branch of the WPSA are published in British Poultry Abstracts .