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	Phylogenetic structure of arbuscular mycorrhizal community shifts in response to increasing soil fertility
	Liu, Yongjun1,2; Johnson, Nancy Collins3; Mao, Lin1; Shi, Guoxi4; Jiang, Shengjing1; Ma, Xiaojun1; Du, Guozhen5; An, Lizhe1,2; Feng, Huyuan1
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2015-10-01
卷号	89页码:196-205
关键词	Symbiotic fungi Phylogenetic structure Ecological process Competition Environmental filtering Resource availability
ISSN号	0038-0717
DOI	10.1016/j.soilbio.2015.07.007
通讯作者	An, Lizhe(lizhean@lzu.edu.cn)
英文摘要	Understanding the underlying mechanisms driving responses of belowground communities to increasing soil fertility will facilitate predictions of ecosystem responses to anthropogenic eutrophication of terrestrial systems. We studied the impact of fertilization of an alpine meadow on arbuscular mycorrhizal (AM) fungi, a group of root-associated microorganisms that are important in maintaining sustainable ecosystems. Species and phylogenetic composition of AM fungal communities in soils were compared across a soil fertility gradient generated by 8 years of combined nitrogen and phosphorus fertilization. Phylogenetic patterns were used to infer the ecological processes structuring the fungal communities. We identified 37 AM fungal virtual taxa, mostly in the genus Glomus. High fertilizer treatments caused a dramatic loss of Glomus species, but a significant increase in genus richness and a shift towards dominance of the lineage of Diversispora. AM fungal communities were phylogenetically clustered in unfertilized soil, random in the low fertilizer treatment and over-dispersed in the high fertilizer treatments, suggesting that the primary ecological process structuring communities shifted from environmental filtering (selection by host plants and fungal niches) to a stochastic process and finally to competitive exclusion across the fertilization gradient. Our findings elucidate the community shifts associated with increased soil fertility, and suggest that high fertilizer inputs may change the dominant ecological processes responsible for the assembly of AM fungal communities towards increased competition as photosynthate from host plants becomes an increasingly limited resource. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别	SCI
WOS关键词	FUNGAL COMMUNITIES ; NITROGEN-FERTILIZATION ; EXPERIMENTAL GRASSLAND ; MICROBIAL COMMUNITIES ; MOLECULAR DIVERSITY ; PLANT DIVERSITY ; ROOT ; ECOSYSTEM ; FOREST ; ECOLOGY
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000361159800018
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557030
专题	寒区旱区环境与工程研究所
通讯作者	An, Lizhe
作者单位	1.Lanzhou Univ, Sch Life Sci, MOE Key Lab Cell Act & Stress Adaptat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 3.No Arizona Univ, Sch Earth Sci & Environm Sustainabil, Flagstaff, AZ 86011 USA 4.Longdong Univ, Univ Key Lab Protect & Utilizat Longdong Bioresou, Qingyang 745000, Peoples R China 5.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland & Agroecosyst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yongjun,Johnson, Nancy Collins,Mao, Lin,et al. Phylogenetic structure of arbuscular mycorrhizal community shifts in response to increasing soil fertility[J]. SOIL BIOLOGY & BIOCHEMISTRY,2015,89:196-205.
APA	Liu, Yongjun.,Johnson, Nancy Collins.,Mao, Lin.,Shi, Guoxi.,Jiang, Shengjing.,...&Feng, Huyuan.(2015).Phylogenetic structure of arbuscular mycorrhizal community shifts in response to increasing soil fertility.SOIL BIOLOGY & BIOCHEMISTRY,89,196-205.
MLA	Liu, Yongjun,et al."Phylogenetic structure of arbuscular mycorrhizal community shifts in response to increasing soil fertility".SOIL BIOLOGY & BIOCHEMISTRY 89(2015):196-205.

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