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DOE OSTI · 2470645

Microbial Interactions Related to N 2 O Emissions and Temperature Sensitivity from Rice Paddy Fields

Xiao, Xian·Delgado-Baquerizo, Manuel·Shen, Haoyang·Ma, Zhiyuan·Zhou, Jizhong·Sun, Bo·Liang, Yuting
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Abstract

The soil microbiome is a driver of nitrous oxide (N 2 O) emissions in terrestrial ecosystems. Identifying the core microbiome of N 2 O 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 N 2 O 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 N 2 O 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 N 2 O 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 N 2 O production and their responses to increasing temperature.

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59 BASIC BIOLOGICAL SCIENCESclimate warmingcore microbiomegreenhouse gas emissionmicrobial interactionsmicrobiologysoil biometemperature sensitivity

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Xiao, Xian, Delgado-Baquerizo, Manuel, Shen, Haoyang, Ma, Zhiyuan, Zhou, Jizhong, Sun, Bo, Liang, Yuting. 2023-01-31. Microbial Interactions Related to N 2 O Emissions and Temperature Sensitivity from Rice Paddy Fields. https://doi.org/10.1128/mbio.03262-22

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