Too much of a good thing? Inorganic nitrogen (N) inhibits moss-associated N2 fixation but organic N can promote it
文献类型：期刊论文
| 作者 | Wang, Yinliu1,4; Lett, Signe3; Rousk, Kathrin3 |
| 刊名 | BIOGEOCHEMISTRY
 |
| 出版日期 | 2022 |
| 卷号 | 159期号:2页码:179-191 |
| ISSN号 | 0168-2563 |
| 关键词 | Cyanobacteria Feathermosses Nitrogen pollution Nitrogen fixation Organic nitrogen Sphagnum |
| DOI | 10.1007/s10533-022-00920-0 |
| 文献子类 | Article |
| 英文摘要 | Moss-associated nitrogen (N-2) fixation is one of the main inputs of new N in pristine ecosystems that are characterized by low N availability. Previous studies have shown that N-2 fixation is inhibited by inorganic N (IN) inputs, but if N-2 fixation in mosses is similarly affected by organic N (ON) remains unknown. Here, we assessed N-2 fixation in two dominant mosses in boreal forests (Pleurozium schreberi and Sphagnum capillifolium) in response to different levels of N, simulating realistic (up to 4 kg N ha(-1) year(-1)) and extreme N addition rates in pristine ecosystems (up to 20 kg N ha(-1) year(-1)) of IN (ammonium nitrate) and ON (alanine and urea). We also assessed if N-2 fixation can recover from the N additions. In the realistic scenario, N-2 fixation was inhibited by increasing NH4NO3 additions in P. schreberi but not in S. capillifolium, and alanine and urea stimulated N-2 fixation in both moss species. In contrast, in the extreme N additions, increasing N inputs inhibited N-2 fixation in both moss species and all N forms. Nitrogen fixation was more sensitive to N inputs in P. schreberi than in S. capillifolium and was higher in the recovery phase after the realistic compared to the extreme N additions. These results demonstrate that N-2 fixation in mosses is less sensitive to organic than inorganic N inputs and highlight the importance of considering different N forms and species-specific responses when estimating the impact of N inputs on ecosystem functions such as moss-associated N-2 fixation. |
| 学科主题 | Environmental Sciences ; Geosciences, Multidisciplinary |
| 电子版国际标准刊号 | 1573-515X |
| 出版地 | DORDRECHT |
| WOS关键词 | AMINO-ACID-UPTAKE ; BOREAL ; DEPOSITION ; RESILIENCE ; BRYOPHYTES ; DIVERSITY ; AMMONIUM |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000777056000001 |
| 资助机构 | Independent Research Fund Denmark (IRFD), Sapere Aude Grant [7027-00011B] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28522]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Copenhagen, Ctr Permafrost, Oster Voldgade 10, DK-1350 Copenhagen, Denmark 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Univ Copenhagen, Dept Biol, Univ Sparken 15, DK-2100 Copenhagen, Denmark |
| 推荐引用方式 GB/T 7714 | Wang, Yinliu,Lett, Signe,Rousk, Kathrin. Too much of a good thing? Inorganic nitrogen (N) inhibits moss-associated N2 fixation but organic N can promote it[J]. BIOGEOCHEMISTRY,2022,159(2):179-191. |
| APA | Wang, Yinliu,Lett, Signe,&Rousk, Kathrin.(2022).Too much of a good thing? Inorganic nitrogen (N) inhibits moss-associated N2 fixation but organic N can promote it.BIOGEOCHEMISTRY,159(2),179-191. |
| MLA | Wang, Yinliu,et al."Too much of a good thing? Inorganic nitrogen (N) inhibits moss-associated N2 fixation but organic N can promote it".BIOGEOCHEMISTRY 159.2(2022):179-191. |
入库方式： OAI收割
来源：植物研究所
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