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| Rate-specific responses of prokaryotic diversity and structure to nitrogen deposition in the Leymus chinensis steppe | |
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; Wang, Yanfen7; He, Zhili1; Frouz, Jan5; Li, Xiangzhen2,3
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| 2014 | |
| 发表期刊 | SOIL BIOLOGY & BIOCHEMISTRY
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| ISSN | 0038-0717 |
| 卷号 | 79页码:81-90 |
| 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. |
| 关键词 | N deposition Community structure Diversity Copiotrophic bacteria Oligotrophic bacteria Steppe ecosystem |
| 学科领域 | Soil Science |
| DOI | 10.1016/j.soilbio.2014.09.009 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | SOIL MICROBIAL COMMUNITIES ; BACTERIAL COMMUNITIES ; BIODIVERSITY ; THRESHOLDS ; ENRICHMENT ; SEQUENCES ; CYCLE |
| WOS研究方向 | Agriculture |
| WOS记录号 | WOS:000344428600011 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 文献子类 | Article |
| 出版地 | OXFORD |
| EISSN | 1879-3428 |
| 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] |
| 作者邮箱 | lixz@cib.ac.cn |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | 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. |
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| Rate_specific_respon（1873KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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