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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Crop and Product Physiology
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1501410
This article is part of the Research Topic Enhancing Plant Stress Resilience: Innovative Roles of Plant Growth-Promoting Bacteria (PGPB) in Sustainable Agriculture and Crop Protection View all articles

Soil properties and rhizosphere interactions affecting nitrous oxide emissions with mitigation by nitrification inhibitors in rice growth stages

Provisionally accepted
Haipeng Zhang Haipeng Zhang *Yiyin Lu Yiyin Lu Wanyi Li Wanyi Li Fuxing Liao Fuxing Liao Juanjuan Wang Juanjuan Wang Hongcheng Zhang Hongcheng Zhang Yanju Yang Yanju Yang
  • Yangzhou University, Yangzhou, China

The final, formatted version of the article will be published soon.

    Nitrous oxide (N2O) emissions from paddy soils, particularly from the rice rhizosphere, significantly contribute to agricultural greenhouse gas outputs. This study explores N2O emission dynamics in rhizosphere (R) and non-rhizosphere (NR) soils from two distinct paddy types (JR and YC) during the primary rice growth stages (tillering, jointing, heading, and grain-filling). Cumulative N2O emissions were measured at 688.56, 762.90, 831.20, and 1072.32 µg N kg -1 for JR-NR, JR-R, YC-NR, and YC-R, respectively. Notably, JR-R and YC-R exhibited increases in cumulative N2O emissions by up to 20.04% and 28.23%, respectively, compared to their NR counterparts at different growth stages. These enhanced emissions were primarily associated with microbial genera Nitrosospira and Nitrosospirae, and influenced by factors such as electrical conductivity (EC) and available potassium (AK). The soil organic carbon to total nitrogen ratio (C/N) was a key determinant influencing Nitrosospira abundance.Additionally, nitrification inhibitors (NIs) demonstrated a substantial reduction in N2O emissions, with a decrease of 92.37% in JR-R and 91.93% in YC-R at selected growth stages, showing more pronounced effects compared to NR soils. These findings highlight the efficacy of NIs in significantly mitigating N2O emissions, particularly in rhizosphere soils. Variations in the efficiency of NIs across different soil types and growth stages suggest that optimizing application timing and developing tailored soilspecific strategies could further enhance the effectiveness of NIs in mitigating N2O emissions from paddy fields. This research provides essential insights for developing targeted mitigation strategies to reduce N2O emissions in rice cultivation and contributes to sustainable agricultural practices.

    Keywords: nitrous oxide emissions, Rice growth, Nitrifying communities, Nitrification inhibitors, rhizosphere soil

    Received: 25 Sep 2024; Accepted: 31 Jan 2025.

    Copyright: © 2025 Zhang, Lu, Li, Liao, Wang, Zhang and Yang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Haipeng Zhang, Yangzhou University, Yangzhou, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.