Trophic Regulations of the Soil Microbiome

The soil microbiome regulates vital ecosystem functions ranging from primary production to soil carbon sequestration. Yet, we have only begun to understand the factors regulating the soil microbiome. While the importance of abiotic factors is increasingly recognized, the roles of trophic regulations...

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Vydané v:Trends in microbiology (Regular ed.) Ročník 27; číslo 9; s. 771 - 780
Hlavní autori: Thakur, Madhav P., Geisen, Stefan
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: England Elsevier Ltd 01.09.2019
Elsevier Science Ltd
Predmet:
Abiotic factors
bacteria
Carbon sequestration
climate change
Community structure
Ecological function
environmental factors
food webs
fungi
microbiome
Microbiomes
Microorganisms
Predation
Predators
Primary production
primary productivity
Regulations
soil
soil microorganisms
Soil structure
Soils
Structure-function relationships
top-down control
food webs
predators
bacteria
top-down control
fungi
climate change
ISSN:0966-842X, 1878-4380, 1878-4380
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Shrnutí:The soil microbiome regulates vital ecosystem functions ranging from primary production to soil carbon sequestration. Yet, we have only begun to understand the factors regulating the soil microbiome. While the importance of abiotic factors is increasingly recognized, the roles of trophic regulations in driving the structure and function of the soil microbiome remain less explored. Here, we review the current understanding of how and when microbial and top predators of the soil shape the community structure and function of the soil microbiome via both direct and indirect effects. We finally highlight that the structure and function of the soil microbiome depend on the interactive effects among predation, plant inputs, and abiotic variables present in the soil. Predators of the soil microbiome regulate microbial structure and functions via both preferential and nonpreferential feeding, with implications on their structure (e.g., diversity) and functions (e.g., nutrient mineralization).The trophic cascade effects on the soil microbiome is often masked due to intraguild predation and omnivory in the soil.Less is known about how microbiome predators influence the competition between soil bacteria and soil fungi.Global climate change can alter the trophic ecology of the soil microbiome by making it fungus-dominated, depending on soil moisture and resource availability.We propose that the interaction among microbiome predators, plant inputs, and abiotic resources could interactively determine the structure of the soil microbiome.
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ISSN:0966-842X
1878-4380
1878-4380
DOI:10.1016/j.tim.2019.04.008