Increased soil microbial AOB amoA and narG abundances sustain long-term positive responses of nitrification and denitrification to N deposition
文献类型：期刊论文
| 作者 | Song, Lei1,2; Niu, Shuli1,2 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 166页码:12 |
| 关键词 | Nitrogen deposition Nitrification Denitrification Functional gene Microbe Nitrous oxide |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2021.108539 |
| 通讯作者 | Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | Nitrification and denitrification driven by microbes are important processes mediating soil N availability and N2O emission. Enhanced N deposition usually stimulates both nitrification and denitrification rates, but whether these stimulation effects are generally persistent or not, and the underlying biological mechanism remain un-clear. To clarify these issues, we compiled the responses of soil nitrification rate, denitrification rate, and mi-crobial functional gene abundances as well as corresponding N2O emission to N deposition at global scale. The results showed that both nitrification rate and AOB amoA abundance were stimulated by N deposition on average, while denitrification rate was stimulated without any change in denitrification related functional gene abundance. When the data set was partitioned by N addition duration, there were larger significant positive responses of nitrification rate and AOB amoA abundance as well as those of denitrification rate and narG abundance with longer duration. The response ratio of nitrification rate was positively correlated with that of AOB amoA abundance (p < 0.01). The response ratio of N2O emission was positively correlated with that of AOB amoA abundance (p = 0.04) as well as that of narG abundance (p < 0.01). These results indicated the crucial role of AOB amoA and narG abundances for the responses of nitrification and denitrification rates to N deposition, as well as the response of N2O emission. The larger gene abundances of AOB amoA and narG with longer term N deposition sustain long-term positive responses of nitrification and denitrification to N deposition. This chal-lenges the traditional cognition that long term N deposition diminished the positive response of N2O emission to N deposition by dampening the microbial activity. The responses of AOB amoA and narG abundances to N deposition should be considered to better predict the dynamic of nitrification rate, denitrification rate or N2O emission in the context of enhanced N deposition. |
| WOS关键词 | AMMONIA-OXIDIZING BACTERIA ; NITROGEN-OXIDE EMISSIONS ; TREATED PIG SLURRIES ; COMMUNITY STRUCTURE ; FOREST SOILS ; N2O EMISSIONS ; DENITRIFYING BACTERIA ; TEMPERATE STEPPE ; PINE PLANTATION ; SIMULATED N |
| 资助项目 | National Natural Science Founda-tion of China[31988102] ; National Natural Science Founda-tion of China[31625006] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000777624700006 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Founda-tion of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/173331]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Song, Lei,Niu, Shuli. Increased soil microbial AOB amoA and narG abundances sustain long-term positive responses of nitrification and denitrification to N deposition [J]. SOIL BIOLOGY & BIOCHEMISTRY,2022,166:12. |
| APA |
Song, Lei,&Niu, Shuli.(2022). Increased soil microbial AOB amoA and narG abundances sustain long-term positive responses of nitrification and denitrification to N deposition .SOIL BIOLOGY & BIOCHEMISTRY,166,12. |
| MLA |
Song, Lei,et al." Increased soil microbial AOB amoA and narG abundances sustain long-term positive responses of nitrification and denitrification to N deposition ".SOIL BIOLOGY & BIOCHEMISTRY 166(2022):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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