基于AMPLCON的微生物组分析:从第二代到第三代测序,以获得更高的分类分辨率.
Elisabetta Notario1, Grazia Visci2, Bruno Fosso1
1Department of Biosciences, Biotechnology and Environment, University of Bari Aldo Moro, 70126 Bari, Italy.
Genes
|August 26, 2023
概括
第三代测序 (TGS) 通过分析整个16S rRNA基因长度,提供了卓越的微生物组概况. 与传统的下一代测序 (NGS) 方法相比,这种全长方法提供了更高的分类分辨率.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- 16S rRNA amplicon测序是微生物组分析的一个常见方法.
- 下一代测序 (NGS) 通常使用短读数,针对少数超变区.
- 第三代测序 (TGS) 的进步使得全长基因测序成为可能.
研究的目的:
- 为了比较不同16S rRNA amplicon测序方法的分类学表征性能.
- 为了评估单区域,多重 (NGS短读) 和全长 (TGS长读) 方法.
- 确定深层微生物组分类学表征的最佳策略.
主要方法:
- 三种方法的比较:单区域NGS,多重NGS和全长TGS.
- 对具有已知的分类学组成的基准微生物群样本的分析.
- 基于超变区和基因覆盖面的分类性能评估.
主要成果:
- 不同的基于amplicon的方法显示了不同的分类性能.
- 使用TGS的全长测序显示出最高的区分能力,达到物种水平.
- 性能与高变性区域和目标基因覆盖率有关.
结论:
- 建议使用第三代测序 (TGS) 来增强微生物群的分类学特征.
- 与基于NGS的方法相比,全长方法提供了更高的分辨率.
- 为了实施TGS,需要进一步改进实验协议和生物信息学.
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