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夏季干旱对泥炭土微生物组结构和功能的影响-多个代理-比较

Haitao Wang¹, Mareike Meister², Corinna Jensen³

¹Institute of Microbiology, University of Greifswald, Greifswald, Germany. haitao.wang@uni-greifswald.de.

ISME communications

|November 8, 2023

概括

在干旱期间使用DNA和RNA代理来评估微生物组动态. 与基于DNA的方法相比,RNA代理,特别是mRNA,更好地捕捉了与DNA相比,在重新灌的中对土壤微生物的干旱影响.

科学领域:

微生物学微生物学
生态生态学生态生态学
环境科学环境科学

背景情况:

了解微生物组的动态对于生态研究至关重要.
现有的微生物组分析代理具有局限性,并且在不同研究中存在差异.
评估环境变化对土壤微生物群的影响,如干旱,需要强大的方法.

研究的目的:

为了比较四种不同的代理 (16/18S rRNA基因,16/18S rRNA转录,mRNA分类学和mRNA功能) 在评估微生物组结构和功能的有效性.
为了揭示夏季严重干旱对重新灌的泥泥土中的 prokaryotic 和 eukaryotic 微生物群的影响.
为了确定不同的代理在预测干旱引起的微生物组变化的准确性.

主要方法:

使用了安普利康和元转录基因测序.
比较了四种不同的代理:rRNA基因,rRNA转录,mRNA分类学和mRNA功能.
分析了微生物组的组成和功能,以应对干旱在两个德国的重新灌的芬泥炭地.

主要成果:

在干燥和潮湿的月份之间,原生生物和真核生物微生物组的组成显著不同.
对于 prokaryotes,mRNA代理显示出更强烈的干旱影响,而对于 eukaryotes,18S rRNA 转录和 mRNA 分类更敏感.
rRNA基因代理在反映干旱影响方面表现出最低的准确性,突出了基于DNA的方法的局限性.

结论:

微生物组的组成和功能对极端天气事件敏感,比如重新灌的树中的干旱.
基于mRNA的代理程序可以更准确地评估干旱诱导的微生物组动态,特别是对于 prokaryotes.
代理的选择显著影响了对微生物群对环境变化反应的理解.

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