气候变化领域集成服务门户(CCPortal): Ectomycorrhizal access to organic nitrogen mediates CO2 fertilization response in a dominant temperate tree

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DOI	10.1038/s41467-021-25652-x
	Ectomycorrhizal access to organic nitrogen mediates CO2 fertilization response in a dominant temperate tree
	Pellitier P.T.; Ibáñez I.; Zak D.R.; Argiroff W.A.; Acharya K.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Plant–mycorrhizal interactions mediate plant nitrogen (N) limitation and can inform model projections of the duration and strength of the effect of increasing CO2 on plant growth. We present dendrochronological evidence of a positive, but context-dependent fertilization response of Quercus rubra L. to increasing ambient CO2 (iCO2) along a natural soil nutrient gradient in a mature temperate forest. We investigated this heterogeneous response by linking metagenomic measurements of ectomycorrhizal (ECM) fungal N-foraging traits and dendrochronological models of plant uptake of inorganic N and N bound in soil organic matter (N-SOM). N-SOM putatively enhanced tree growth under conditions of low inorganic N availability, soil conditions where ECM fungal communities possessed greater genomic potential to decay SOM and obtain N-SOM. These trees were fertilized by 38 years of iCO2. In contrast, trees occupying inorganic N rich soils hosted ECM fungal communities with reduced SOM decay capacity and exhibited neutral growth responses to iCO2. This study elucidates how the distribution of N-foraging traits among ECM fungal communities govern tree access to N-SOM and subsequent growth responses to iCO2. © 2021, The Author(s).
语种	英语
scopus关键词	carbon dioxide; inorganic compound; organic nitrogen; soil organic matter; carbon dioxide; fungus; genomics; nitrogen; soil microorganism; soil organic matter; ambient air; Article; controlled study; dendrochronology; ectomycorrhiza; fertilization; foraging; fungal community; metagenomics; nitrogen availability; nonhuman; nutrient; plant fungus interaction; Quercus rubra; temperate deciduous forest; tree growth; turnover rate; Quercus rubra
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250621
作者单位	School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, United States; Department of Biology, Stanford University, Stanford, CA, United States
推荐引用方式 GB/T 7714	Pellitier P.T.,Ibáñez I.,Zak D.R.,et al. Ectomycorrhizal access to organic nitrogen mediates CO2 fertilization response in a dominant temperate tree[J],2021,12(1).
APA	Pellitier P.T.,Ibáñez I.,Zak D.R.,Argiroff W.A.,&Acharya K..(2021).Ectomycorrhizal access to organic nitrogen mediates CO2 fertilization response in a dominant temperate tree.Nature Communications,12(1).
MLA	Pellitier P.T.,et al."Ectomycorrhizal access to organic nitrogen mediates CO2 fertilization response in a dominant temperate tree".Nature Communications 12.1(2021).