遗物DNA掩盖了河水水库生态系统中多个微生物分类组的基于DNA的分析
Yuanyuan Xue1, Mamun Abdullah Al1, Huihuang Chen1,2
1Aquatic Eco-Health Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China.
Molecular ecology
|July 15, 2023
概括
水样中的遗留DNA可以扭曲活跃的微生物社区概况和生态网络. 删除这种不可活性的DNA可以更清楚地了解淡水微生物的生命及其与环境的相互作用.
科学领域:
- 环境微生物学环境微生物学
- 水生生态学 水生生态学
- 分子生态学分子生态学
背景情况:
- 水中微生物群落的时空变异性得到了很好的研究.
- 遗留DNA对微生物群落概况,特别是微核细胞的影响尚未完全理解.
研究的目的:
- 研究遗留DNA对河流水库中的细菌和微核细胞社区组成的影响.
- 评估遗留DNA如何影响微生物网络和环境关系.
主要方法:
- 胺 (PMA) 处理与高通量测序相结合.
- 总和活跃的细菌和微核细胞群落的表征.
- 贝塔多样性分析和微生物网络分析.
主要成果:
- PMA治疗显著改变了微核细胞社区的组成,而不是细菌.
- 遗留DNA的去除影响了特定植物浮游生物,真菌和原生虫的相对丰度.
- 遗留DNA的去除改变了微生物网络的复杂性和环境因素关系,但并没有改变时间周转率.
结论:
- 遗留DNA可能导致对活跃的微生物群落,网络和环境相关性的误导性解释.
- 建议对淡水生态系统中不可活性的DNA进行进一步研究.
- 区分活跃和遗留DNA对于准确的生态评估至关重要.
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