PMID- 37720157
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230921
IS  - 1664-302X (Print)
IS  - 1664-302X (Electronic)
IS  - 1664-302X (Linking)
VI  - 14
DP  - 2023
TI  - Nitrogen fertilization promoted microbial growth and N(2)O emissions by 
      increasing the abundance of nirS and nosZ denitrifiers in semiarid maize field.
PG  - 1265562
LID - 10.3389/fmicb.2023.1265562 [doi]
LID - 1265562
AB  - Nitrous oxide (N(2)O) emissions are a major source of gaseous nitrogen loss, 
      causing environmental pollution. The low organic content in the Loess Plateau 
      region, coupled with the high fertilizer demand of maize, further exacerbates 
      these N losses. N fertilizers play a primary role in N(2)O emissions by 
      influencing soil denitrifying bacteria, however, the underlying microbial 
      mechanisms that contribute to N(2)O emissions have not been fully explored. 
      Therefore, the research aimed to gain insights into the intricate relationships 
      between N fertilization, soil denitrification, N(2)O emissions, potential 
      denitrification activity (PDA), and maize nitrogen use efficiency (NUE) in 
      semi-arid regions. Four nitrogen (N) fertilizer rates, namely N0, N1, N2, and N3 
      (representing 0, 100, 200, and 300 kg ha(-1) yr.(-1), respectively) were applied 
      to maize field. The cumulative N(2)O emissions were 32 and 33% higher under N2 
      and 37 and 39% higher under N3 in the 2020 and 2021, respectively, than the N0 
      treatment. N fertilization rates impacted the abundance, composition, and network 
      of soil denitrifying communities (nirS and nosZ) in the bulk and rhizosphere 
      soil. Additionally, within the nirS community, the genera Cupriavidus and 
      Rhodanobacter were associated with N(2)O emissions. Conversely, in the nosZ 
      denitrifier, the genera Azospirillum, Mesorhizobium, and Microvirga in the bulk 
      and rhizosphere soil reduced N(2)O emissions. Further analysis using both random 
      forest and structural equation model (SEM) revealed that specific soil properties 
      (pH, NO(3)(-)-N, SOC, SWC, and DON), and the presence of nirS-harboring 
      denitrification, were positively associated with PDA activities, respectively, 
      and exhibited a significant association to N(2)O emissions and PDA activities but 
      expressed a negative effect on maize NUE. However, nosZ-harboring denitrification 
      showed an opposite trend, suggesting different effects on these variables. Our 
      findings suggest that N fertilization promoted microbial growth and N(2)O 
      emissions by increasing the abundance of nirS and nosZ denitrifiers and altering 
      the composition of their communities. This study provides new insights into the 
      relationships among soil microbiome, maize productivity, NUE, and soil N(2)O 
      emissions in semi-arid regions.
CI  - Copyright (c) 2023 Fudjoe, Li, Anwar, Shi, Xie, Wang, Xie and Yongjie.
FAU - Fudjoe, Setor Kwami
AU  - Fudjoe SK
AD  - State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, 
      Lanzhou, China.
AD  - College of Agronomy, Gansu Agricultural University, Lanzhou, China.
FAU - Li, Lingling
AU  - Li L
AD  - State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, 
      Lanzhou, China.
AD  - College of Agronomy, Gansu Agricultural University, Lanzhou, China.
FAU - Anwar, Sumera
AU  - Anwar S
AD  - Department of Botany, Government College Women University Faisalabad, Faisalabad, 
      Pakistan.
FAU - Shi, Shangli
AU  - Shi S
AD  - College of Grassland Science, Gansu Agricultural University, Lanzhou, China.
FAU - Xie, Junhong
AU  - Xie J
AD  - State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, 
      Lanzhou, China.
AD  - College of Agronomy, Gansu Agricultural University, Lanzhou, China.
FAU - Wang, Linlin
AU  - Wang L
AD  - State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, 
      Lanzhou, China.
AD  - College of Agronomy, Gansu Agricultural University, Lanzhou, China.
FAU - Xie, Lihua
AU  - Xie L
AD  - State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, 
      Lanzhou, China.
AD  - College of Agronomy, Gansu Agricultural University, Lanzhou, China.
FAU - Yongjie, Zhou
AU  - Yongjie Z
AD  - State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, 
      Lanzhou, China.
AD  - College of Agronomy, Gansu Agricultural University, Lanzhou, China.
LA  - eng
PT  - Journal Article
DEP - 20230831
PL  - Switzerland
TA  - Front Microbiol
JT  - Frontiers in microbiology
JID - 101548977
PMC - PMC10501401
OTO - NOTNLM
OT  - nitrogen fertilization
OT  - potential denitrification activity
OT  - semiarid Loess Plateau
OT  - soil N2O emission
OT  - soil nirS and nosZ communities
COIS- The authors declare that the research was conducted in the absence of any 
      commercial or financial relationships that could be construed as a potential 
      conflict of interest.
EDAT- 2023/09/18 06:42
MHDA- 2023/09/18 06:43
PMCR- 2023/08/31
CRDT- 2023/09/18 04:35
PHST- 2023/07/23 00:00 [received]
PHST- 2023/08/18 00:00 [accepted]
PHST- 2023/09/18 06:43 [medline]
PHST- 2023/09/18 06:42 [pubmed]
PHST- 2023/09/18 04:35 [entrez]
PHST- 2023/08/31 00:00 [pmc-release]
AID - 10.3389/fmicb.2023.1265562 [doi]
PST - epublish
SO  - Front Microbiol. 2023 Aug 31;14:1265562. doi: 10.3389/fmicb.2023.1265562. 
      eCollection 2023.