PMID- 37901810 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231031 IS - 1664-302X (Print) IS - 1664-302X (Electronic) IS - 1664-302X (Linking) VI - 14 DP - 2023 TI - Different responses of abundant and rare bacterial composition to groundwater depth and reduced nitrogen application in summer maize field. PG - 1220731 LID - 10.3389/fmicb.2023.1220731 [doi] LID - 1220731 AB - INTRODUCTION: It is well known that reduced nitrogen application and groundwater depth can change soil microbial communities, but the associated difference in the response of abundant and rare bacterial composition to these local environmental changes remains unclear. METHODS: In this study a lysimeter experiment was carried out to examine the impact of reduced nitrogen and groundwater depth on the composition of abundant and rare bacteria. RESULTS AND DISCUSSION: Our results demonstrated that the summer maize field soil species composition of rare bacterial sub-communities was significantly regulated by reduced nitrogen application, groundwater depth change and their interactions. However, only reduced nitrogen application had a significant influence on the species composition of abundant bacterial sub-communities. The structural equation model (SEM) indicated that reduced nitrogen application and groundwater depth change also could indirectly regulate the species composition of abundant and rare bacteria by altering soil attributes. The changes in soil pH and TSN had the most significant effects on the community composition of abundant and rare bacteria, respectively. More importantly, rare bacterial sub-communities were more sensitive to the changes in nitrogen input, groundwater depth and soil factors. Collectively, our study first demonstrated that abundant and rare microbial sub-communities responded differently to reduced nitrogen application and groundwater depth change. This study highlights that summer maize farmland production management should take nitrogen input and groundwater depth into consideration to maintain the compositional stability of soil rare microbial sub-communities. CI - Copyright (c) 2023 Bai, Guo, Li, Qiao, Du and Qi. FAU - Bai, Fangfang AU - Bai F AD - Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang, China. FAU - Guo, Wei AU - Guo W AD - Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang, China. AD - Water Environment Factor Risk Assessment Laboratory of Agricultural Products Quality and Safety, Ministry of Agriculture and Rural Affairs, Xinxiang, China. FAU - Li, Ping AU - Li P AD - Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang, China. AD - Agricultural Water Soil Environmental Field Research Station of Xinxiang, Chinese Academy of Agricultural Sciences, Xinxiang, China. FAU - Qiao, Dongmei AU - Qiao D AD - Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang, China. FAU - Du, Zhenjie AU - Du Z AD - Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang, China. AD - Water Environment Factor Risk Assessment Laboratory of Agricultural Products Quality and Safety, Ministry of Agriculture and Rural Affairs, Xinxiang, China. FAU - Qi, Xuebin AU - Qi X AD - Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang, China. AD - Water Environment Factor Risk Assessment Laboratory of Agricultural Products Quality and Safety, Ministry of Agriculture and Rural Affairs, Xinxiang, China. LA - eng PT - Journal Article DEP - 20231013 PL - Switzerland TA - Front Microbiol JT - Frontiers in microbiology JID - 101548977 PMC - PMC10613034 OTO - NOTNLM OT - abundant and rare bacteria OT - bacterial composition OT - groundwater depth OT - reduced nitrogen application OT - summer maize field 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- 2023/10/30 06:46 MHDA- 2023/10/30 06:47 PMCR- 2023/10/13 CRDT- 2023/10/30 04:58 PHST- 2023/05/11 00:00 [received] PHST- 2023/09/18 00:00 [accepted] PHST- 2023/10/30 06:47 [medline] PHST- 2023/10/30 06:46 [pubmed] PHST- 2023/10/30 04:58 [entrez] PHST- 2023/10/13 00:00 [pmc-release] AID - 10.3389/fmicb.2023.1220731 [doi] PST - epublish SO - Front Microbiol. 2023 Oct 13;14:1220731. doi: 10.3389/fmicb.2023.1220731. eCollection 2023.