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在中国家的保护计划中管理基因组多样性
Mengmeng Zhang1,2, Shiwei Wang1, Ran Xu1
1College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China.
Genetics, selection, evolution : GSE
|December 15, 2023
概括
在现场保存的中国家禽品种的基因多样性低于在现场保存的品种. 这种遗传差异化可能是由于遗传漂移或适应新环境造成的,这会影响保护策略.
科学领域:
- 动物遗传学动物遗传学
- 保护生物学 保护生物学
- 基因组学就是基因组学.
背景情况:
- 有效地保护农场动物对于可持续的粮食生产至关重要.
- 现场和现场战略保护中国家禽品种的遗传完整性.
- 保存种群中的基因组多样性和种群结构需要进行比较.
研究的目的:
- 为了比较基因组多样性和in situ和ex situ保存的中国家禽品种之间的种群结构.
- 在保存种群中识别遗传差异化和选择的特征.
- 为优化国内品种的保护计划提供见解.
主要方法:
- 基因型测序 (GBS) 用于来自中国三种家品种的361个个体.
- 基因组多样性估计使用异构性,近亲繁殖和链接不平衡.
- 使用PCA,邻近树木和ADMIXTURE分析了种群结构;使用FST,Pi和XP-EHH分析了选择特征.
主要成果:
- 现场保护的种群的遗传多样性比现场种群的遗传多样性少.
- 在同一品种的in situ和ex situ种群之间观察到遗传差异化.
- 差异化可能是由遗传漂移,突变或适应驱动的,如在北京You中所见.
结论:
- 保护计划在中国家禽品种中保持可持续的基因组多样性.
- 在受控环境中的ex situ保护导致基因多样性相比于in situ减少.
- 为了保护,种群转移可能会导致遗传差异化,由于漂移或适应,为未来的战略提供信息.
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