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危物种Magnolia amoena的高质量的染色体级基因组组合

Yu Liu¹, Xing-Jian Liu¹, Ke Hu¹

¹Jiangsu Key Laboratory for Conservation and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China.

Scientific data

|March 4, 2026

概括

我们生成了Magnolia amoena的高质量基因组组,这是一种罕见的树种. 这项研究为了解它的进化,适应和保护工作提供了基础.

科学领域:

基因组学就是基因组学.
进化生物学进化生物学
植物学植物学

背景情况:

马格诺利亚阿莫纳 (Magnolia amoena) 是东亚特有树,具有显著的花多样性和药用价值,但缺乏全面的基因组数据.
这种研究不足的状况阻碍了保护策略和Magnoliaceae物种的进化洞察力.

研究的目的:

为了生成一个高质量的,染色体规模的基因组组装Magnolia amoena.
为保护,进化研究和了解M. amoena.适应提供基因组资源.

主要方法:

利用DNBSEQ-T7,PacBio HiFi和Hi-C测序技术进行基因组组装.
采用了11种巨类物种的比较基因组学和家族基因组重建.

主要成果:

实现了1.87Gb的染色体尺度组合,其中95.73%的染色体在19个伪染色体上.
鉴定了39739个编码蛋白质的基因,23,244个基因家族 (1,905个是M. amoena独有的),以及显著的重复元素 (79.55%).
遗传学分析显示,M. amoena是M. biondii的姐妹,大约在1850万年前分离.

结论:

染色体规模的基因组组合为Magnolia amoena提供了一个关键的资源.
这一基因组基础将促进对M. amoena的进化,适应和保护的未来研究.

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