对13个Malus加入的泛基因组分析揭示了与水果特征相关的结构和序列变异
Ting Wang1, Shiyao Duan2, Chen Xu1
1College of Horticulture, China Agricultural University, Beijing, China.
Nature communications
|November 15, 2023
概括
这项研究组装了Malus泛基因组,确定了许多结构变异 (SV) 和副本数变异 (CNV). 这些变异影响了基因表达,水果特征和果化.
科学领域:
- 基因组学就是基因组学.
- 植物生物学 植物生物学
- 进化生物学 进化生物学
背景情况:
- 结构变异 (SVs) 和副本数变异 (CNVs) 是有肉果植物表型多样性的关键驱动因素.
- 了解果 (Malus) 的这些变异对于作物改进和化研究至关重要.
研究的目的:
- 通过整合新的和现有的基因组组合来构建一个全面的Malus泛基因组.
- 为了识别和描述Malus属内的结构变异 (SVs) 和副本数变异 (CNVs).
- 研究 SV 和 CNV 对基因表达,水果特征和经济重要特征的功能影响.
主要方法:
- 基因组组合10个不同的马卢斯加入,包括"奶奶史密斯"和"红色富士".
- 与之前报告的三种Malus基因组进行整合,以创建泛基因组.
- 识别和分析副本数变化 (CNV) 和结构变化 (SV).
- 在CNV和基因表达水平之间的相关性分析.
- 对影响水果颜色的特定非编码RNA的功能性表征.
主要成果:
- 马卢斯泛基因组组合,包括10个新测序的基因组和3个以前报告的基因组.
- 识别了20,220个副本数变化 (CNV) 和317,393个结构变化 (SV).
- 在CNV和相关基因表达水平之间观察到正相关性.
- 在MMK2基因内突中从209bp插入中发现一种非编码RNA,该基因调节基因表达并影响水果颜色.
- 识别与水果质量和生物耐药性特征相关的重叠 SV.
结论:
- 马卢斯泛基因组为理解遗传多样性和特征变异提供了宝贵的资源.
- 在果中,CNVs对基因表达调节有显著的贡献.
- 在果化,水果质量和对生物因素的耐药性方面,SVs起着至关重要的作用.
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