一个高质量的染色体水平野生大米基因组的Oryza coarctata
Hang Zhao1,2, Wenzheng Wang1, Yirong Yang1
1Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
Scientific data
|October 14, 2023
概括
野生大米的亲属Oryza coarctata具有一种新的高质量的基因组组. 本资源有助于理解耐压力和大米基因组的演变.
科学领域:
- 基因组学就是基因组学.
- 植物科学 植物科学
- 进化生物学 进化生物学
背景情况:
- 米 (Oryza coarctata) 是一种野生大米的亲属,具有独特的盐度和潜水耐受性.
- 以前的基因组组装是零碎和不完整的.
- 它含有有价值的基因,可以改善作物.
研究的目的:
- 为了生成一个高度连续的染色体层次的基因组组合和注释Oryza coarctata.
- 在Oryza属中识别新的基因组类型.
- 为大米研究和育种提供有价值的资源.
主要方法:
- 为高质量的读取提供PacBio HiFi测序.
- 对于脚手架和染色体固的Hi-C数据.
- 用于基因注释和基因组组的生物信息分析.
主要成果:
- 一个高度连续的基因组组合573.4 Mb,N50为23.1 Mb.
- 96.99%的组件固定在24个染色体上.
- 鉴定KK和LL基因组类型,有助于了解大米进化.
- 组合包括45,571个基因,其重复性含量为25.5%.
结论:
- 在O. coarctata的染色体级基因组组合是一个显著的进步.
- 该资源将促进对大米应激耐受机制的研究.
- 提供了对Oryza属的进化历史的见解.
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