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糖果的端粒到端粒基因组组合

Meng Li¹, Chunhai Chen², Haigang Wang³

¹Center for Agricultural Genetic Resources Research, Shanxi Agricultural University, Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture and Rural Affairs, Taiyuan, 030031, China. nkypzslm@163.com.

Scientific data

|August 2, 2024

概括

这项研究介绍了古老的小麦品种"Cuohu Bazi" (CHBZ) 的第一个完整的基因组组合. 这种高质量的,没有差距的组合显著改善了以前的参考资料,帮助了的遗传学研究.

科学领域:

基因组学就是基因组学.
植物科学植物科学
农业科学农业科学

背景情况:

像"Cuohu Bazi" (CHBZ) 这样的古老品种具有宝贵的农学特征.
之前的麦参考基因组包含空白,缺乏完全的端粒到端粒 (T2T) 分辨率.

研究的目的:

为了生成首个T2T和无间隙的基因组组合,用于CHBZ糖果品种.
为CHBZ提供高质量的参考基因组,增强的遗传和基因组研究.

主要方法:

使用PacBio HiFi读数,牛津纳米孔技术和Hi-C数据进行基因组测序.
采用先进的生物信息学工具进行组装,填补差距和基因注释.

主要成果:

实现了724.85 Mb的T2T,为CHBZ实现了无缺口的基因组组装,解决了3,913个之前的缺口.
该组件包括所有10个中间体和20个端粒,具有高连续性 (N50: 71.1 Mb),完整性 (99.01% BUSCO) 和正确性 (QV: 61.60).
与BTx623.3相比,注释了32,855个编码蛋白质的基因,并确定了161个特定于CHBZ的存在/缺失变异.

结论:

高质量的CHBZ基因组组合为了解的遗传学和进化提供了宝贵的资源.
这项工作为未来研究古代品种的独特特征和遗传多样性提供了基础.

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