从冰人的肠道解开古代的真菌DNA
Nikolay Oskolkov1, Anna Sandionigi2,3, Anders Götherström4
1Department of Biology, Science for Life Laboratory, National Bioinformatics Infrastructure Sweden, Lund University, Lund, Sweden. nikolay.oskolkov@scilifelab.se.
BMC genomics
|December 20, 2024
概括
古老的真菌DNA,特别是Pseudogymnoascus物种,在Ötzi冰人的肠道中被检测到. 这一发现突显了古代人类与真菌的潜在共存,并验证了一种新的生物信息学方法.
科学领域:
- 古代DNA研究研究古老的DNA.
- 菌类学 菌类学是指菌类学.
- 生物信息学是一种生物信息学.
背景情况:
- 在古老的元基因组样本中很少发现真菌DNA,这限制了对古老真菌的了解.
- 冰人Ötzi是一个自然木乃伊的个体,提供了一个独特的机会来研究古代肠道微生物组合.
研究的目的:
- 为了调查Ötzi冰人胃肠道中的古代真菌物种的存在和身份.
- 开发和验证用于检测真菌古代DNA (aDNA) 的生物信息管道.
主要方法:
- 一个专门的生物信息管道被用来检测和验证真菌aDNA.
- 分析的重点是来自Ötzi的肌肉,胃,小肠和大肠样本.
主要成果:
- 发现了属于Pseudogymnoascus属的古老DNA.
- 可能的物种包括Pseudogymnoascus destructans和Pseudogymnoascus verrucosus,在胃和小肠中大量存在.
- 肌肉和大肠样本中明显缺少真菌DNA.
结论:
- 奥茨很可能在他的饮食中偶然摄入了这些真菌,在寒冷的环境中生存有助于保存.
- 这一发现表明,古代人类与机会主义真菌共存.
- 这项研究验证了在历史样本中检测真菌aDNA的强有力的生物信息方法.
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