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Differential responses of soil bacterial communities to long-term N and P inputs in a semi-arid steppe

文献类型：期刊论文

作者Ling, Ning; Chen, Dima1; Guo, Hui; Wei, Jiaxin; Bai, Yongfei1; Shen, Qirong; Hu, Shuijin3
刊名GEODERMA
出版日期2017
卷号292页码:25-33
关键词Semi-arid steppe Nor P inputs Soil bacterial diversity Soil bacterial community structure Illumine Miseq sequencing
ISSN号0016-7061
DOI10.1016/j.devcel.2017.11.016
文献子类Article
英文摘要Both nitrogen (N) and phosphorus (P) may limit plant production in steppes and affect plant community structure. However, few studies have explored in detail the differences and similarities in the responses of below ground microbial communities to long-term N and P inputs. Using a high-throughput Illumina Miseq sequencing platform, we characterized the bacterial communities in a semi-arid steppe subjected to long-term N or P additions. Our results showed that both the Chao richness and Shannon's diversity were negatively correlated to N input rate, while only Chao richness was significantly and negatively correlated to P input rate. Also, both N and P additions altered the bacterial community structure. The bacterial community between plots of the same N or P input rate was much more dissimilar with the higher input level, indicating more severe niche differentiation in pots with higher N or P input. N Inputs significantly increased the relative abundance of the predicted copiotrophic groups (Proteobacteria and Firmicutes) but reduced the predicted oligotrophic groups (Acidobacteria, Nitrospirae, Chloraflexi), with the order Rhizobiales being most affected. P additions significantly affected only two phyla (Armatimonadetes and Chlorobi), which were positively correlated with P source. Results from the structural equation modelling (SEM) showed that N additions affected the bacterial community primarily by changing the pH, while P additions did so mainly by improving P availability. Our results suggest that the below-ground bacterial communities are more sensitive to N inputs, but P inputs can also play an important role in bacterial niche differentiation. These findings improve our understanding of bacterial responses to N and P inputs, and their impacts on bacterial-mediated processes, especially in the context of increasing anthropogenic nutrient inputs. (C) 2017 Elsevier B.V. All rights reserved.
学科主题Cell Biology ; Developmental Biology
出版地AMSTERDAM
电子版国际标准刊号1872-6259
WOS关键词NITROGEN-FERTILIZATION ; INNER-MONGOLIA ; TERRESTRIAL ECOSYSTEMS ; MICROBIAL COMMUNITIES ; FUNCTIONAL DIVERSITY ; GRASSLAND ; BIODIVERSITY ; LIMITATION ; DEPOSITION ; STABILITY
语种英语
WOS记录号WOS:000418271900010
出版者ELSEVIER SCIENCE BV
资助机构China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2015M570460, 2016T90473]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/22100]  
专题植被与环境变化国家重点实验室
作者单位1.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Jiangsu, Peoples R China
2.North Carolina State Univ, Dept Plant Pathol, Raleigh, NC 27695 USA
3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714		 Ling, Ning,Chen, Dima,Guo, Hui,et al. Differential responses of soil bacterial communities to long-term N and P inputs in a semi-arid steppe[J]. GEODERMA,2017,292:25-33.
APA Ling, Ning.,Chen, Dima.,Guo, Hui.,Wei, Jiaxin.,Bai, Yongfei.,...&Hu, Shuijin.(2017).Differential responses of soil bacterial communities to long-term N and P inputs in a semi-arid steppe.GEODERMA,292,25-33.
MLA Ling, Ning,et al."Differential responses of soil bacterial communities to long-term N and P inputs in a semi-arid steppe".GEODERMA 292(2017):25-33.

入库方式： OAI收割

来源：植物研究所

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