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Different bacterial co-occurrence patterns and community assembly between rhizosphere and bulk soils under N addition in the plant-soil system

文献类型：期刊论文

作者Wang, Jie2; Liao, Lirong1; Ye, Zhencheng2; Liu, Hongfei3; Zhang, Chao1,2; Zhang, Lu1; Liu, Guobin1,2; Wang, Guoliang1,2
刊名PLANT AND SOIL
出版日期2022-01-13
页码17
关键词Nitrogen addition Microbial diversity Co-occurrence network Assembly processes
ISSN号0032-079X
DOI10.1007/s11104-021-05214-2
通讯作者Zhang, Chao(zhangchao1985@nwafu.edu.cn)
英文摘要Aims Extensive studies have demonstrated a significant impact of nitrogen (N) addition on microbial community diversity, composition, and functions in various soils. However, microbial co-occurrence patterns and assembly processes under enhanced N levels is less known, especially with respect to the rhizosphere where microbes are closely linked with plant growth. Methods In this study, we performed a pot experiment using N addition gradient (0, 2.5, 5, 7.5, 10, and 15 g N center dot m(-2)center dot year(-1)) and amplicon sequencing and metabolomics to investigate the effect of short-term N addition (2 years) on the co-occurrence patterns and assembly process of bacterial communities as well as their potential drivers in the rhizosphere. Results Short-term N addition significantly altered bacterial community diversity and composition in the rhizosphere soil but not in the bulk soil; i.e., the rhizosphere bacterial diversity increased with N addition but decreased under high N input (>5 g N center dot m(-2)center dot year(-1)). The rhizosphere co-occurrence networks showed a more complex topology than the bulk soil, and this complexity could be strengthened by the quantity of N added. The N-induced establishment of the bacterial community in the rhizosphere was mainly dominated by deterministic processes with an increase in the variable selection in response to the increase in the N-addition rate, while the bacterial community in the bulk soil exhibited a transition from stochastic to deterministic processes. N addition stimulated the release of amino acids and short-chain organic acids into the rhizosphere, and these changes in root exudates and the soil NH4+-N level were mainly responsible for the changes in the structure of the rhizosphere bacterial community and co-occurrence networks of keystone species. Conclusions Our results demonstrated the differences in the co-occurrence patterns and assembly processes of bacterial communities between rhizosphere and bulk soils under N addition, which were closely associated with root exudates. These findings improve our understanding of plant-microbial interactions.
WOS关键词TERM NITROGEN ADDITION ; MICROBIAL COMMUNITIES ; ROOT EXUDATION ; DIVERSITY ; ASSOCIATIONS ; NETWORKS ; FEATURES ; BIOMASS
资助项目National Natural Sciences Foundation of China[41771554] ; West Light Foundation of the Chinese Academy of Sciences[XAB2020YN05] ; Natural Science Basic Research Program of Shaanxi Province[2019KJXX-081] ; Natural Science Basic Research Program of Shaanxi Province[2021JM605] ; Chinese Universities Scientifc Fund[2452018336]
WOS研究方向Agriculture ; Plant Sciences
语种英语
WOS记录号WOS:000741923200007
出版者SPRINGER
资助机构National Natural Sciences Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; Natural Science Basic Research Program of Shaanxi Province ; Chinese Universities Scientifc Fund
源URL[http://ir.igsnrr.ac.cn/handle/311030/169748]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Chao
作者单位1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
3.Univ Bayreuth, Dept Agroecol, D-95440 Bayreuth, Germany
推荐引用方式
GB/T 7714		 Wang, Jie,Liao, Lirong,Ye, Zhencheng,et al. Different bacterial co-occurrence patterns and community assembly between rhizosphere and bulk soils under N addition in the plant-soil system[J]. PLANT AND SOIL,2022:17.
APA Wang, Jie.,Liao, Lirong.,Ye, Zhencheng.,Liu, Hongfei.,Zhang, Chao.,...&Wang, Guoliang.(2022).Different bacterial co-occurrence patterns and community assembly between rhizosphere and bulk soils under N addition in the plant-soil system.PLANT AND SOIL,17.
MLA Wang, Jie,et al."Different bacterial co-occurrence patterns and community assembly between rhizosphere and bulk soils under N addition in the plant-soil system".PLANT AND SOIL (2022):17.

入库方式： OAI收割

来源：地理科学与资源研究所

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