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Effects of Biological Nitrification Inhibitor on Nitrous Oxide and nosZ, nirK, nirS Denitrifying Bacteria in Paddy Soils

Author

Listed:
  • Xingchen Huang

    (Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
    These authors contributed equally to this work.)

  • Yuning Zou

    (Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
    These authors contributed equally to this work.)

  • Cece Qiao

    (Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China)

  • Qiumeng Liu

    (Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China)

  • Jingwen Liu

    (Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China)

  • Rui Kang

    (Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China)

  • Lantian Ren

    (Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China)

  • Wenge Wu

    (Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230041, China)

Abstract

This study aimed to investigate the effects of a biological nitrification inhibitor on nitrous oxide emission and rice yield quality in paddy soils and its effects on denitrifying the bacteria of nosZ, nirK, and nirS types. Two treatments were performed: (1) using a local conventional fertilizer as the control CK; (2) using the partial application of a conventional fertilizer + biological nitrification inhibitor as SW. N 2 O emission was measured using gas chromatography; qPCR amplification was performed using primers for the targeted functional genes, nosZ, nirS, and nirK, and denitrifying functional gene abundance and denitrifying microbial community structure were analyzed using fluorescence quantification and high–throughput sequencing, respectively. The results reveal that the biological nitrification inhibitor resulted in a 41.83% reduction in N 2 O, relative to the normal fertilizer treatment. Meanwhile, rice yield increased by 15.45% and related quality indexes were also improved. This can promote the reproduction of bacteria with the nosZ gene while inhibiting the growth of bacteria with nirS and nirK genes. The core bacteria, Nitrosospira , Rhodanobacter , Bradyrhizobium , Tardiphaga , Rhodopseudomonas , and Paracoccus, positively correlated with N 2 O emissions, while core bacteria Azospirillum , Burkholderia , and Mesorhizobium negatively correlated with N 2 O emissions. Therefore, the application of a biological nitrification inhibitor could be an effective measure to promote rice yield and quality, reduce N 2 O emissions, and affect key denitrifying bacteria.

Suggested Citation

  • Xingchen Huang & Yuning Zou & Cece Qiao & Qiumeng Liu & Jingwen Liu & Rui Kang & Lantian Ren & Wenge Wu, 2023. "Effects of Biological Nitrification Inhibitor on Nitrous Oxide and nosZ, nirK, nirS Denitrifying Bacteria in Paddy Soils," Sustainability, MDPI, vol. 15(6), pages 1-12, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:6:p:5348-:d:1100225
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    References listed on IDEAS

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    1. Wang, Dongyan & Guo, Liping & Zheng, Lei & Zhang, Yigong & Yang, Rongquan & Li, Ming & Ma, Fen & Zhang, Xinyue & Li, Yingchun, 2019. "Effects of nitrogen fertilizer and water management practices on nitrogen leaching from a typical open field used for vegetable planting in northern China," Agricultural Water Management, Elsevier, vol. 213(C), pages 913-921.
    2. Clayton D. Elder & Xiaomei Xu & Jennifer Walker & Jordan L. Schnell & Kenneth M. Hinkel & Amy Townsend-Small & Christopher D. Arp & John W. Pohlman & Benjamin V. Gaglioti & Claudia I. Czimczik, 2018. "Greenhouse gas emissions from diverse Arctic Alaskan lakes are dominated by young carbon," Nature Climate Change, Nature, vol. 8(2), pages 166-171, February.
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    Cited by:

    1. Dafeng Hui & Avedananda Ray & Lovish Kasrija & Jaekedah Christian, 2024. "Impacts of Climate Change and Agricultural Practices on Nitrogen Processes, Genes, and Soil Nitrous Oxide Emissions: A Quantitative Review of Meta-Analyses," Agriculture, MDPI, vol. 14(2), pages 1-24, February.

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