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Rate-specific responses of prokaryotic diversity and structure to nitrogen deposition in the Leymus chinensis steppe

文献类型：期刊论文

作者Yao, Minjie1; Rui, Junpeng2,3; Li, Jiabao2,3; Dai, Yumei2,3; Bai, Yongfei4; Hedenec, Petr5; Wang, Junming6; Zhang, Shiheng2,3; Pei, Kequan4; Liu, Chi2,3,7
刊名SOIL BIOLOGY & BIOCHEMISTRY
出版日期2014
卷号79页码:81-90
关键词N deposition Community structure Diversity Copiotrophic bacteria Oligotrophic bacteria Steppe ecosystem
ISSN号0038-0717
DOI10.1016/j.soilbio.2014.09.009
文献子类Article
英文摘要Serious nitrogen (N) deposition in terrestrial ecosystems causes soil acidification and changes the structure and function of the microbial community. However, it is unclear how these changes are dependent on N deposition rates, other factors induced by N (e.g., pH), and their interactions. In this study, we investigated the responses of soil prokaryotic community structure and stability after a 13-year N addition in the semi-arid Leymus chinensis steppe in Inner Mongolia, China. Our results demonstrated that the prokaryotic community structure changed at the low N addition rate of 1.75 g N m(-2) yr(-1); however, dramatic changes in microbial abundance, respiratory quotient, and prokaryotic diversity occurred at N addition rates of more than 5.25 g N m(-2) yr(-1) when the soil pH dropped below 6.0. The two patterns indicated the difference in driving forces for different microbial properties. The N-driven and pH-driven processes are likely the most important mechanisms determining the responses of bacterial community to N. Some copiotrophic/oligotrophic bacteria, e.g., Proteobacteria and Acidbacteria, changed their relative abundances with the N addition continuously even at a low rate, indicating that they were more sensitive to N directly. Some bacterial groups significantly changed their relative abundance at a high N addition rate when pH dropped below 6.0, e.g., Verrucomicrobia and Armatimonadetes, indicating that they were more sensitive to pH below 6.0. N addition altered the prokaryotic community structure through enrichment of copiotrophic bacteria (species adjustment) at low N addition rates and through enrichment of nitrophilous taxa and significant loss of diversity at high N rates. The results also demonstrated that a high N addition diminished the stability of the prokaryotic community structure and activity through reduction in species diversity and bacterial interaction. Overall, this study supported the hypothesis that the responses of prokaryota to N were dependent on deposition rates, and N-driven and pH-driven processes were the important mechanisms to control the shift of the prokaryotic community. (C) 2014 Elsevier Ltd. All rights reserved.
学科主题Soil Science
出版地OXFORD
电子版国际标准刊号1879-3428
WOS关键词SOIL MICROBIAL COMMUNITIES ; BACTERIAL COMMUNITIES ; BIODIVERSITY ; THRESHOLDS ; ENRICHMENT ; SEQUENCES ; CYCLE
WOS研究方向Agriculture
语种英语
WOS记录号WOS:000344428600011
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构State Key Laboratory of Vegetation and Environmental Change [LVEC-2012kf02] ; National Natural Science Foundation of China [41371268, 41301272] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB15010000]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/27290]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, Chengdu Inst Biol, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Chengdu 610041, Sichuan, Peoples R China
3.Chinese Acad Sci, Key Lab Environm & Appl Microbiol, Chengdu 610041, Sichuan, Peoples R China
4.Chinese Acad Sci, Chengdu Inst Biol, Environm Microbiol Key Lab Sichuan Prov, Chengdu 610041, Sichuan, Peoples R China
5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
6.Charles Univ Prague, Inst Environm Studies, CR-12844 Prague 2, Czech Republic
7.Univ Illinois, Prairie Res Inst, Sect Climate Sci, Illinois State Water Survey, Champaign, IL 61802 USA
8.Univ Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Yao, Minjie,Rui, Junpeng,Li, Jiabao,et al. Rate-specific responses of prokaryotic diversity and structure to nitrogen deposition in the Leymus chinensis steppe[J]. SOIL BIOLOGY & BIOCHEMISTRY,2014,79:81-90.
APA Yao, Minjie.,Rui, Junpeng.,Li, Jiabao.,Dai, Yumei.,Bai, Yongfei.,...&Li, Xiangzhen.(2014).Rate-specific responses of prokaryotic diversity and structure to nitrogen deposition in the Leymus chinensis steppe.SOIL BIOLOGY & BIOCHEMISTRY,79,81-90.
MLA Yao, Minjie,et al."Rate-specific responses of prokaryotic diversity and structure to nitrogen deposition in the Leymus chinensis steppe".SOIL BIOLOGY & BIOCHEMISTRY 79(2014):81-90.

入库方式： OAI收割

来源：植物研究所

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