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Periphytic biofilms function as a double‐edged sword influencing nitrogen cycling in paddy fields.
- Source :
-
Environmental Microbiology . Dec2022, Vol. 24 Issue 12, p6279-6289. 11p. - Publication Year :
- 2022
-
Abstract
- It remains unclear whether periphytic biofilms are beneficial to N cycling in paddy fields. Here, based on a national‐scale field investigation covering 220 rice fields in China, the N accumulation potential of periphytic biofilms was found to decrease from 8.8 ± 2.4 to 4.5 ± 0.7 g/kg and 3.1 ± 0.6 g/kg with increasing habitat latitude and longitude, respectively. The difference in abundant and rare subcommunities likely accounts for their geo‐difference in N accumulation potential. The N cycling pathways involved in periphytic biofilms inferred that soil N and N2 were two potential sources for N accumulation in periphytic biofilms. Meanwhile, some of the accumulated N may be lost via N2, N2O, NO, or NH3 outputs. Superficially, periphytic biofilms are double‐edged swords to N cycling by increasing soil N through biological N fixation but accelerating greenhouse gas emissions. Essentially, augmented periphytic biofilms increased change of TN (ΔTN) content in paddy soil from −231.9 to 31.9 mg/kg, indicating that periphytic biofilms overall benefit N content enhancement in paddy fields. This study highlights the contribution of periphytic biofilms to N cycling in rice fields, thus, drawing attention to their effect on rice production and environmental security. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14622912
- Volume :
- 24
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Environmental Microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 160872881
- Full Text :
- https://doi.org/10.1111/1462-2920.16277