并非一切都失去了:微生物群样本对冷器故障和长期存储的弹性
M Fabiola Pulido Barriga1,2, James W J Randolph1, Sydney I Glassman1
1Department of Microbiology and Plant Pathology, University of California-Riverside, Riverside, California, USA.
mSphere
|December 20, 2024
概括
微生物组研究可以从冷机故障中恢复. 真菌群落和整体社区结构 (β-多样性) 显示出对解和长期储存的弹性,使可靠的数据分析成为可能.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 环境科学 环境科学
背景情况:
- 微生物组研究依赖于广泛的样本采集和储存,通常使用超冷冷 (-80°C).
- 冷机故障对数据完整性和研究连续性构成重大风险.
- 评估这种故障对样本可回收性的影响对于长期研究至关重要.
研究的目的:
- 评估 -80°C冷器意外故障对土壤微生物样本的影响.
- 评估解后的土壤样本的可回收性和在-20°C的长期DNA储存.
- 确定冷机故障和储存条件对细菌和真菌群体组成以及实验性治疗效应的影响.
主要方法:
- 在解后提取的DNA与长期存储在-20°C的DNA进行了比较.
- 利用16S和ITS2测序数据从冷机故障之前和之后.
- 使用Illumina MiSeq来评估细菌和真菌的丰富性和社区组成 (β-多样性).
主要成果:
- 菌类丰富性和细菌和真菌β多样性都表现出对土壤样本解和延长冷DNA存储的实质性弹性.
- 菌比细菌对短期解的抵抗力更强.
- 主导的微生物种群在解和长时间结中持续存在,支持时间跟踪.
结论:
- 在冷机故障后的微生物组研究中,β多样性比α多样性更强大.
- 菌类比细菌更适应冷器故障.
- 在-80°C的土壤储存比在-20°C的提取DNA储存更稳健,以长期保存微生物样本.
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