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样品处理和储存条件对存档生理活跃的土壤微生物群落的影响

Marcus T Brock¹, Hilary G Morrison², Loïs Maignien^2,3

¹Department of Botany, University of Wyoming, 1000 E. University Ave., Laramie, WY 82071, United States.

FEMS microbiology letters

|June 12, 2024

概括

保护土壤微生物群落用于研究是一项挑战. 选土壤在-20°C下保存50天,对微生物组成的影响最小,这使得未来的植物微生物相互作用研究成为可能.

科学领域:

微生物学微生物学
生态生态学生态生态学
土壤科学土壤科学

背景情况:

土壤微生物群落对于生态系统功能和植物健康至关重要.
微生物群落的季节性和连续性变化使长期的植物微生物相互作用研究复杂化.
了解样本处理如何影响微生物群落对于可重复性研究至关重要.

研究的目的:

调查土壤样本处理 (选与过) 和储存条件 (-20°C与-80°C) 对土壤微生物群落生存能力的影响.
为未来的实验确定保护生理活跃的土壤微生物的最佳方法.
评估归档对微生物物种丰富度和社区组成的影响.

主要方法:

来自蒙大拿州和俄克拉荷马州农田的土壤样本被选 (2毫米) 或过 (45微米).
样品在-20°C或-80°C下存档50天,然后恢复2天或7天.
提取了DNA和RNA,并使用16S amplicon测序来表征微生物群落.

主要成果:

过和储存都显著改变了土壤微生物群落,影响了物种丰富性和组成.
在-20°C保存过的土壤对微生物群体组成的破坏最小,特别是当通过RNA池进行评估时.
过改变了社区组成,但没有改变物种丰富.

结论:

在-20°C保存过的土壤提供了一种可行的方法来保护生理活跃的土壤微生物群落.
这种保存技术可以促进长期和可重复的植物微生物相互作用实验.
仔细考虑土壤样本的处理和储存对于保持微生物社区在研究中的完整性至关重要.

关键词:

16S rRNA 是一个16S rRNA.档案档案档案档案档案档案过器过器过器的过方法微生物社区的微生物社区.储存储存储存储存储存是一个

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