| DOI | 10.1111/ele.12802
|
| Feedbacks between plant N demand and rhizosphere priming depend on type of mycorrhizal association |
| Sulman B.N.; Brzostek E.R.; Medici C.; Shevliakova E.; Menge D.N.L.; Phillips R.P.
|
| 发表日期 | 2017
|
| ISSN | 1461-023X
|
| EISSN | 1461-0248
|
| 卷号 | 20期号:8 |
| 英文摘要 | Ecosystem carbon (C) balance is hypothesised to be sensitive to the mycorrhizal strategies that plants use to acquire nutrients. To test this idea, we coupled an optimality-based plant nitrogen (N) acquisition model with a microbe-focused soil organic matter (SOM) model. The model accurately predicted rhizosphere processes and C–N dynamics across a gradient of stands varying in their relative abundance of arbuscular mycorrhizal (AM) and ectomycorrhizal (ECM) trees. When mycorrhizal dominance was switched – ECM trees dominating plots previously occupied by AM trees, and vice versa – legacy effects were apparent, with consequences for both C and N stocks in soil. Under elevated productivity, ECM trees enhanced decomposition more than AM trees via microbial priming of unprotected SOM. Collectively, our results show that ecosystem responses to global change may hinge on the balance between rhizosphere priming and SOM protection, and highlight the importance of dynamically linking plants and microbes in terrestrial biosphere models. © 2017 John Wiley & Sons Ltd/CNRS |
| 英文关键词 | Biogeochemical model; biogeochemistry; carbon cycling; forest productivity; mycorrhizae; N-cycle feedbacks; plant-soil interactions; soil carbon |
| 学科领域 | nitrogen; microbiology; mycorrhiza; rhizosphere; soil; tree; Mycorrhizae; Nitrogen; Rhizosphere; Soil; Soil Microbiology; Trees
|
| 语种 | 英语
|
| scopus关键词 | nitrogen; microbiology; mycorrhiza; rhizosphere; soil; tree; Mycorrhizae; Nitrogen; Rhizosphere; Soil; Soil Microbiology; Trees |
| 来源期刊 | Ecology Letters
(IF:8.699[JCR-2018],11.576[5-Year]) |
| 文献类型 | 期刊论文
|
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/118353
|
| 作者单位 | Program in Atmospheric and Oceanic Sciences, Department of Geosciences, Princeton University, Princeton, NJ, United States; Department of Biology, West Virginia University, Morgantown, WV, United States; Princeton Environmental Institute, Princeton University, Princeton, NJ, United States; NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; Department of Ecology, Evolution and Environmental Biology, Columbia University, New York, NY, United States; Department of Biology, Indiana University, Bloomington, IN, United States
|
推荐引用方式
GB/T 7714 |
Sulman B.N.,Brzostek E.R.,Medici C.,et al. Feedbacks between plant N demand and rhizosphere priming depend on type of mycorrhizal association[J],2017,20(8).
|
| APA |
Sulman B.N.,Brzostek E.R.,Medici C.,Shevliakova E.,Menge D.N.L.,&Phillips R.P..(2017).Feedbacks between plant N demand and rhizosphere priming depend on type of mycorrhizal association.Ecology Letters,20(8).
|
| MLA |
Sulman B.N.,et al."Feedbacks between plant N demand and rhizosphere priming depend on type of mycorrhizal association".Ecology Letters 20.8(2017).
|
