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Agronomy
Volume 13
Issue 9
10.3390/agronomy13092420
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Article

Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields

by
Yubing Dong
1,2,
Xintong Xu
1,
Junqian Zhang
1,
Ying Jiao
1,
Bingxue Wang
1,
Chenyuan Wang
1 and
Zhengqin Xiong
1,*
1
Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
2
Huaiyin Institute of Agricultural Sciences of Xuhuai Region in Jiangsu, Jiangsu Academy of Agricultural Sciences, Huaian 223001, China
*
Author to whom correspondence should be addressed.
Agronomy 2023, 13(9), 2420; https://doi.org/10.3390/agronomy13092420
Submission received: 9 August 2023 / Revised: 16 September 2023 / Accepted: 18 September 2023 / Published: 20 September 2023
(This article belongs to the Special Issue Editorial Board Members' Collection Series: Effective Control of the Nitrogen Gap - a Double Gain - Higher Yields and Reduced Environmental Risk)
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Abstract

With excessive nitrogen (N) input, high nitrous oxide (N2O) emissions are frequently observed in greenhouse vegetable fields. We hypothesized that the underlying production mechanisms can be derived across a wide selection of vegetable fields in the middle and lower reaches of the Yangtze River. Thus, we investigated the emission characteristics and relative contributions of ammonia-oxidizing archaea (AOA) and bacteria (AOB) and other microbial processes to the N2O production from five long-term greenhouse vegetable fields through an incubation experiment with combined inhibition methods. The results showed that the ammonia oxidation process is the dominant contributor to N2O production at all five sites, accounting for 88–97% of the total N2O emissions. Regardless of acidic, neutral, or alkaline soil, AOA-driven N2O emission rates were consistently higher than AOB-driven N2O emission rates. Both AOA-driven and AOB-driven N2O emissions exhibited positive correlations with soil pH, with significant increases in soil N2O production associated with high pH levels. Therefore, general production mechanisms were derived, such that more attention should be paid to AOA-driven N2O emissions and to vegetable soils with a relatively high pH in the middle and lower reaches of the Yangtze River.
Keywords: intensive vegetable production; greenhouse gas; nitrification inhibitor; ammonia-oxidizing archaea (AOA); ammonia-oxidizing bacteria (AOB) intensive vegetable production; greenhouse gas; nitrification inhibitor; ammonia-oxidizing archaea (AOA); ammonia-oxidizing bacteria (AOB)

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MDPI and ACS Style

Dong, Y.; Xu, X.; Zhang, J.; Jiao, Y.; Wang, B.; Wang, C.; Xiong, Z. Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields. Agronomy 2023, 13, 2420. https://doi.org/10.3390/agronomy13092420

AMA Style

Dong Y, Xu X, Zhang J, Jiao Y, Wang B, Wang C, Xiong Z. Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields. Agronomy. 2023; 13(9):2420. https://doi.org/10.3390/agronomy13092420

Chicago/Turabian Style

Dong, Yubing, Xintong Xu, Junqian Zhang, Ying Jiao, Bingxue Wang, Chenyuan Wang, and Zhengqin Xiong. 2023. "Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields" Agronomy 13, no. 9: 2420. https://doi.org/10.3390/agronomy13092420

APA Style

Dong, Y., Xu, X., Zhang, J., Jiao, Y., Wang, B., Wang, C., & Xiong, Z. (2023). Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields. Agronomy, 13(9), 2420. https://doi.org/10.3390/agronomy13092420

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