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Arbuscular Mycorrhiza Reduced Nitrogen Loss via Runoff, Leaching, and Emission of N2O and NH3 from Microcosms of Paddy Fields

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Abstract

This study aims to investigate the role of arbuscular mycorrhizal (AM) symbiosis in reducing N loss from paddy fields, using two rice lines: a mycorrhiza-defective rice line (non-mycorrhizal) and its mycorrhizal progenitor. Two rice lines were grown in the presence of an AM fungal isolate. In this study, N loss of runoff, leaching, N2O emission, and NH3 volatilization were measured, and in addition, N uptake of rice, soil aggregates, and plant available N concentration of soil. The results obtained suggest that N loss via runoff, leaching, NH3 volatilization, and N2O emission of mycorrhizal rice was 11%, 8%, 6%, and 1%, lower than that of non-mycorrhizal rice, respectively. Meanwhile, mycorrhizal rice has higher biomass and plant N uptake. Our study shows that the AM symbiosis contributes to the sustainability of rice production by reducing N loss, enhancing soil aggregation and increasing plant N uptake.

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All data generated or analyzed during this study are included in this published article.

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Acknowledgements

We thank Miao He for helping with data collection, Haiyang Xu for designing the microcosm, Ertao Wang for providing the plant and AM fungal isolate, and Xiaowei Wang for the inoculum production.

Funding

This work was supported by the Natural Science Foundation of Jiangsu Province (grant no. BK20160689) and the Postgraduate Research & Practice Innovation Program of Jiangsu Province (JSCX19_0351).

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SZ, analyzed the data, wrote the first manuscript, and modified it; WY, YX, and SW, performed the experiments, collected the samples, and collected the data; YZ and MR, designed the experiment, revised the manuscript, and modified the language. All the authors discussed the results and commented on the manuscript.

Corresponding author

Correspondence to Zhaoyang You.

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The authors declare no competing interests.

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Zhang, S., Yun, W., Xia, Y. et al. Arbuscular Mycorrhiza Reduced Nitrogen Loss via Runoff, Leaching, and Emission of N2O and NH3 from Microcosms of Paddy Fields. Water Air Soil Pollut 233, 11 (2022). https://doi.org/10.1007/s11270-021-05429-0

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  • DOI: https://doi.org/10.1007/s11270-021-05429-0

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