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在南极洲的奥利古纪岩石样本中,利用DNA元编码 (DNA Metabarcoding) 探索了内石的真菌多样性

Natana G Rabelo¹, Vívian N Gonçalves¹, Marcelo A Carvalho²

¹Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil.

|June 27, 2024

概括

这项研究使用DNA元编码探索了古老的奥利古纪岩石中的真菌多样性. 研究人员发现了一个复杂而多样化的真菌生物群,与现代南极息地相似,这表明了未来研究和应用的潜力.

科学领域:

古代生物学的古生物学.
分子生态学分子生态学
地质微生物学的生物.

背景情况:

在古代岩石中存在的真菌群落在很大程度上仍未被探索.
了解过去的微生物生命,可以了解地球的历史和进化过程.

研究的目的:

为了描述与Oligocene岩石核心相关的真菌多样性.
评估古老的内结石菌生物组的复杂性和组成.
将古老的真菌多样性与现代息地进行比较.

主要方法:

用DNA元编码来分析来自Oligocene岩石核心的真菌DNA.
高通量测序确定了真菌的安普利康序列变异 (ASV).
用多样性指数和稀疏度曲线来量化和评估真菌多样性.

主要成果:

检测到一个丰富而复杂的真菌生物群,包括多个类型的198种真菌ASV.
主导的种类包括*Pseudogymnoascus pannorum*,*Penicillium* sp.和*Aspergillus* sp. 这些种类都占据了主导地位.
观察到高的真菌多样性指数,不同岩石核心之间存在差异.

结论:

奥利戈纪岩石内核是多样化的内石真菌群体的所在地.
检测到的真菌生物群在多样性方面与最近的南极息地相当.
需要进一步的研究来分离这些真菌用于进化,生理学,生物地球化学和生物技术研究.

关键词:

在南极洲,南极洲是南极洲.我们的eDNADNA 环境驱动因素环境驱动因素菌是一种真菌.

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