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在普通鱼片中氨基酸组合的基因组和转录基因组分析
Yingjie Chen1,2, Kaikuo Wang1,2, Qi Wang2
1National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China.
Animals : an open access journal from MDPI
|May 14, 2025
概括
这项研究揭示了影响普通鱼片中氨基酸含量的遗传因素. 基因组选择策略可以提高养殖鱼类的必需氨基酸水平,以改善人类营养.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 动物遗传学动物遗传学
- 营养科学 营养科学
背景情况:
- 鱼类是氨基酸 (AAs) 的重要来源,包括人类必需氨基酸 (HEAAs).
- 了解养殖鱼类的AA法规是提高营养价值的关键.
- 普通鱼是一种重要的水产养殖物种,具有改善营养的潜力.
研究的目的:
- 为了研究常见鱼片中氨基酸变异的遗传基础.
- 识别控制氨基酸含量的基因和调控机制.
- 开发基因组选择工具,用于培育含有较高AA含量的常见鱼.
主要方法:
- 分析了17个单个AAA和5个AAA组,在304个普通鱼片中使用热酸水解.
- 进行了全基因组关联研究 (GWAS),以确定与AA含量相关的单核酸多态 (SNP).
- 利用转录组数据来识别与AA度相关的候选基因.
- 应用基因组选择程序来估计AA含量的育种值.
主要成果:
- 确定了大多数AA和AA组的显著遗传性 (遗传性>0.2).
- 通过GWAS发现了1974年的SNP和许多与AA含量相关的候选基因.
- 发现了7089个与多个AA度相关的候选基因,并确定了HEAA含量的特定基因功能 (例如ATPase活性).
- 在实际AA含量和估计的繁殖值之间实现了高正相关性 (0.760.90).
结论:
- 阐明了影响鱼AA成分的主要遗传过程和调节机制.
- 证明了基因组选择在增加养殖鱼类AA含量的有效性.
- 基因组选择计划为繁殖普通鱼提供了一条途径,这些鱼具有增强的营养特征,以满足人类的饮食需求.
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