Rapid Shifts in Bacterial Community Assembly under Static and Dynamic Hydration Conditions in Porous Media
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Date
2020-01
Publication Type
Journal Article
ETH Bibliography
yes
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OPEN ACCESS
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Abstract
The complexity of natural soils presents a challenge to the systematic identification and disentanglement of governing processes that shape natural bacterial communities. Studies have highlighted the critical role of the soil aqueous phase in shaping interactions among soil bacterial communities. To quantify and improve the attributability of soil aqueous-phase effects, we introduced a synthetic and traceable bacterial community to simple porous microcosms and subjected the community to constant or dynamic hydration conditions. The results were expressed in terms of absolute abundance and show species-specific responses to hydration and nutrient conditions. Hydration dynamics exerted a significant influence on the fraction of less-abundant species, especially after extended incubation periods. Phylogenetic relationships did not explain the group of most abundant species. The ability to quantify species-level dynamics in a bacterial community offers an important step toward deciphering the links between community composition and functions in dynamic terrestrial environments.
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Publication status
published
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Journal / series
Volume
86 (1)
Pages / Article No.
Publisher
American Society for Microbiology
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Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
microbial ecology; bacterial community assembly; absolute quantification; quantitative real-time PCR (qPCR); microbial interactions; Fluidigm; porous media
Organisational unit
03812 - Or, Dani (emeritus) / Or, Dani (emeritus)
Notes
Funding
182734 - Deciphering mechanisms of soil bacterial community assembly under changing hydration regimes (SNF)
320499 - The Hidden Frontier: Quantitative Exploration of Physical and Ecological Origins of Microbial Diversity in Soil (EC)
320499 - The Hidden Frontier: Quantitative Exploration of Physical and Ecological Origins of Microbial Diversity in Soil (EC)