气候变化领域集成服务门户(CCPortal): Feedbacks between plant N demand and rhizosphere priming depend on type of mycorrhizal association

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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
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).