Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China

doi:10.1111/nph.18516

	Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China
	Wu, Hui 1; Yang, Junjie 2; Fu, Wei 1; Rillig, Matthias C.; Cao, Zhenjiao ; Zhao, Aihua ; Hao, Zhipeng ; Zhang, Xin ; Chen, Baodong 1; Han, Xingguo1,2
	2023
发表期刊	NEW PHYTOLOGIST
ISSN	0028-646X
卷号	237 期号:1 页码:279-294
摘要	Nitrogen (N) enrichment poses threats to biodiversity and ecosystem stability, while arbuscular mycorrhizal (AM) fungi play important roles in ecosystem stability and functioning. However, the ecological impacts, especially thresholds of N enrichment potentially causing AM fungal community shifts have not been adequately characterized. Based on a long-term field experiment with nine N addition levels ranging from 0 to 50 g N m(-2) yr(-1) in a temperate grassland, we characterized the community response patterns of AM fungi to N enrichment. Arbuscular mycorrhizal fungal biomass continuously decreased with increasing N addition levels. However, AM fungal diversity did not significantly change below 20 g N m(-2) yr(-1), but dramatically decreased at higher N levels, which drove the AM fungal community to a potentially unstable state. Structural equation modeling showed that the decline in AM fungal biomass could be well explained by soil acidification, whereas key driving factors for AM fungal diversity shifted from soil nitrogen : phosphorus (N : P) ratio to soil pH with increasing N levels. Different aspects of AM fungal communities (biomass, diversity and community composition) respond differently to increasing N addition levels. Thresholds for substantial community shifts in response to N enrichment in this grassland ecosystem are identified.
关键词	arbuscular mycorrhizal fungi biodiversity community response global change nitrogen deposition stability threshold
学科领域	Plant Sciences
DOI	10.1111/nph.18516
收录类别	SCI
语种	英语
WOS关键词	SOIL MICROBIAL BIOMASS ; ECOSYSTEM STABILITY ; PLANT COMMUNITY ; CRITICAL LOADS ; GLOBAL CHANGE ; LIFE-HISTORY ; TRADE-OFFS ; DEPOSITION ; RESPONSES ; DIVERSITY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000870347900001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1469-8137
资助机构	National Natural Science Foundations of China [41877050] ; National Key Research and Development Program of China [2016YFC0500702]
作者邮箱	bdchen@rcees.ac.cn
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/29096
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Rillig, Matthias C.] Free Univ Berlin, Inst Biol, D-14195 Berlin, Germany 5.Rillig, Matthias C.] Berlin Brandenburg Inst Adv Biodivers Res BBIB, D-14195 Berlin, Germany
推荐引用方式 GB/T 7714	Wu, Hui,Yang, Junjie,Fu, Wei,et al. Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China[J]. NEW PHYTOLOGIST,2023,237(1):279-294.
APA	Wu, Hui.,Yang, Junjie.,Fu, Wei.,Rillig, Matthias C..,Cao, Zhenjiao.,...&Han, Xingguo.(2023).Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China.NEW PHYTOLOGIST,237(1),279-294.
MLA	Wu, Hui,et al."Identifying thresholds of nitrogen enrichment for substantial shifts in arbuscular mycorrhizal fungal community metrics in a temperate grassland of northern China".NEW PHYTOLOGIST 237.1(2023):279-294.

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