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澳大利亚阿尔卑斯山皮草Bassiana duperreyi的基因组组装和注释,使用长期阅读的技术
Benjamin J Hanrahan1, Kirat Alreja2, Andre L M Reis3,4,5
1School of Biotechnology and Biomolecular Science, Faculty of Science, University of New South Wales, Sydney, Sydney, NSW 2052, Australia.
G3 (Bethesda, Md.)
|March 14, 2025
概括
我们为东部三线 (Bassiana duperreyi) 提供了一种高质量的基因组组件,这是一种以温度依赖的性别逆转而闻名的物种. 此资源有助于研究性别决定和生殖策略的演变.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 类学 类学 类学 类学
背景情况:
- 东部三线 (Bassiana duperreyi) 是一种来自澳大利亚的卵性爬行动物.
- 这种物种表现出取决于温度的性别逆转,这是一个罕见的现象,XX个体在低化温度下发展为雄性.
- 了解这种特征的遗传基础对于进化和发育生物学至关重要.
研究的目的:
- 为了生成一个染色体规模的基因组组装Bassiana duperreyi.
- 为研究性别决定和性别逆转提供基因组资源.
- 为了促进Scincidae家族内的比较基因组学,并研究活偶的演化.
主要方法:
- 使用PacBio HiFi和牛津纳米孔技术进行基因组测序是长时间的阅读.
- 使用Illumina HiC数据进行长读的脚手架,用于染色体级组装.
- 通过基因组减去和重复元素分析识别Y染色体支架.
主要成果:
- 一个1.57 Gb的染色体规模的基因组组件被制造出来,具有很高的连续性 (222 Mb的N50脚手架).
- 该组件在很大程度上被组织成已知的型 (宏染色体,微染色体,X染色体).
- 新的α-卫星重复在中心区域被确定,并组装了线粒体和rDNA基因组.
结论:
- 高质量的B.duperreyi基因组组合符合并超过了地球生物基因组项目标准.
- 这种资源对于研究性别决定,热可移性性别逆转以及生殖模式的演变来说将是无价的.
- 它作为体内的比较基因组学研究的基础.
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