Differential responses of arbuscular mycorrhizal fungi to nitrogen addition in a near pristine Tibetan alpine meadow
Zheng, Y; Kim, YC; Tian, XF; Chen, L; Yang, W; Gao, C; Song, MH; Xu, XL; Guo, LD
2014
Source PublicationFEMS MICROBIOLOGY ECOLOGY
ISSN0168-6496
Volume89Issue:3Pages:594-605
AbstractElucidating the responses of soil microbial abundance and community composition to nitrogen (N) addition is important for predicting ecosystem function under increased atmospheric N deposition. We examined the arbuscular mycorrhizal (AM) fungal community under three N forms (NH4+-N, NO3--N, and NH4NO3-N) and two N rates (1.5 and 7.5gNm(-2)year(-1)) in an alpine meadow of the Qinghai-Tibetan Plateau. AM fungal extraradical hyphal density was significantly decreased by NH4+-N in May, but was not affected by N form nor N rate in August. N rate, but not N form, significantly affected AM fungal spore density; high N rate decreased spore density. No direct N addition effect was observed on AM fungal community; however, soil available phosphorus, pH, and NO3--N were considered as important factors that influenced AM fungal community composition. Structural equation model results showed that N rate, not N form, strongly affected soil characteristics, which directly influenced community compositions of plants and AM fungi, as well as spore density. Therefore, AM fungal community was influenced by N addition, primarily because of altered soil characteristics, and partially by a modified plant community, but not or just slightly by direct N addition effects in this alpine meadow ecosystem.
SubtypeJournal
Keyword454 pyrosequencing AMF community composition nitrogen deposition Qinghai-Tibetan Plateau
Subject AreaMicrobiology
WOS Subject ExtendedMicrobiology
WOS KeywordMICROBIAL COMMUNITIES ; SEMIARID GRASSLANDS ; TALLGRASS PRAIRIE ; TEMPERATE STEPPE ; PLANT DIVERSITY ; ATMOSPHERIC CO2 ; SOIL ; FERTILIZATION ; DEPOSITION ; ABUNDANCE
Indexed BySCI
Language英语
WOS IDWOS:000341704000008
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44513
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Zheng, Y,Kim, YC,Tian, XF,et al. Differential responses of arbuscular mycorrhizal fungi to nitrogen addition in a near pristine Tibetan alpine meadow[J]. FEMS MICROBIOLOGY ECOLOGY,2014,89(3):594-605.
APA Zheng, Y.,Kim, YC.,Tian, XF.,Chen, L.,Yang, W.,...&Guo, LD.(2014).Differential responses of arbuscular mycorrhizal fungi to nitrogen addition in a near pristine Tibetan alpine meadow.FEMS MICROBIOLOGY ECOLOGY,89(3),594-605.
MLA Zheng, Y,et al."Differential responses of arbuscular mycorrhizal fungi to nitrogen addition in a near pristine Tibetan alpine meadow".FEMS MICROBIOLOGY ECOLOGY 89.3(2014):594-605.
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