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Microbial Interactions Related to N2O Emissions and Temperature Sensitivity from Rice Paddy Fields
10.1128/mbio.03262-22
Xian Xiao
Manuel Delgado-Baquerizo
Haoyang Shen
Zhiyuan Ma
Jizhong Zhou
Bo Sun
Yuting Liang
Research Article
Research Article
climate warming
soil biome
microbial interactions
core microbiome
greenhouse gas emission
temperature sensitivity
American Society for Microbiology
Xiao et al.
Copyright © 2023 Xiao et al.
This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.
20230131
2023
ABSTRACT
The soil microbiome is a driver of nitrous oxide (N2O) emissions in terrestrial ecosystems. Identifying the core microbiome of N2O emissions and its temperature sensitivity from trillions of soil microorganisms is a great challenge and is essential to improving the predictability of soil-climate feedback related to increasing temperature. Here, the integrated soil microbiome covering archaeal, bacterial, fungal, algal, and microfaunal communities was studied to disengage the potential linkage with its N2O emissions and its temperature sensitivity in paddy fields by hunting for core species pairs. The results showed that between-group interactions of core bacterial and archaeal members and the within-group interactions of core bacterial members jointly contributed to the N2O emissions and its temperature sensitivity. The contribution of between-group interactions (32 to 33%) was greater than that of within groups (10 to 18%). These results suggested that N2O emissions and their fluctuations related to climate warming are affected by the within- and between-group interactions of the soil microbiome. Our results help advance the knowledge on the importance of microbial keystone species and network associations in controlling N2O production and their responses to increasing temperature.
IMPORTANCE Soil microorganisms drive emissions of nitrous oxide from soils; this is a powerful greenhouse gas and the dominant ozone-depleting agent. N2O emissions can be partly predicted from soil properties and specific microbial groups, whereas a possible role of below-ground microbial interactions has largely been overlooked. Here, the integrated soil microbiome covering archaeal, bacterial, fungal, algal, and microfaunal communities was studied to disengage the potential linkage with the N2O emissions and temperature sensitivity of the microbiome in paddy fields by hunting for core species pairs. The results showed that between-group interactions of core bacterial and archaeal members and the within-group interactions of core bacterial members jointly contributed to the N2O emissions. The contribution of between-group interactions (32 to 33%) was greater than that of within-group interactions (10 to 18%). Our results help advance the knowledge on the importance of microbial keystone species and interactions in controlling N2O production and their responses to increasing temperature.
20221123
20221223
2150-7511
Adobe LiveCycle PDF Generator; modified using iText® 5.5.13.2 ©2000-2020 iText Group NV (AGPL-version)2023-06-02T07:11:11-07:00
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