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题名: The phylogenetic structure of AMF communities shifts in response to gradient warming with and without winter grazing on the Qinghai-Tibet Plateau
作者: Shi, Guoxi1, 2; Yao, Buqing1; Liu, Yongjun3; Jiang, Shengjing3; Wang, Wenying2; Pan, Jianbin3; Zhao, Xinquan1; Feng, Huyuan3; Zhou, Huakun1
刊名: APPLIED SOIL ECOLOGY
出版日期: 2017-12-01
卷号: 121, 页码:31-40
关键词: Winter clipping ; Warming gradient ; Soil microbial community ; Global climate change ; Ecological processes
DOI: 10.1016/j.apsoil.2017.09.010
文章类型: Article
英文摘要: Arbuscular mycorrhizal fungi (AMF) have been demonstrated to influence many ecological processes in their natural ecosystems. However, little is known about how AMF communities respond to gradient warming and grazing, especially winter grazing. In the present study, we conducted an experiment to examine the interaction between warming and winter grazing, simulated by clipping before the growing season, to measure changes in the AMF community across a warming gradient with and without winter clipping in an alpine meadow ecosystem. A total of 63 phylotypes of AMF were identified using 454 pyrosequencing. Both warming and clipping reduced AMF species richness, but had no additive negative effects. The clipping alone and the interaction between warming and clipping changed the AMF species composition, but not its phylogenetic composition. The phylogenetic structure of AMF communities were dramatically changed from phylogenetically random to convergent across our warming gradient under the unclipped treatments and were phylogenetically random in all treatments with clipping. Our findings suggest that the primary ecological processes determining AMF communities shift from stochastic processes to habitat filtering across our warming gradient under the unclipped treatments, whilst there was no such shift under the clipped treatments. This study highlights that the removal of standing dead biomass through winter grazing serves a key role in regulating soil microbial diversity in the much warmer world.
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Soil Science
研究领域[WOS]: Agriculture
关键词[WOS]: ARBUSCULAR MYCORRHIZAL FUNGI ; ALPINE MEADOW ECOSYSTEM ; TEMPERATE GRASSLAND ; SEMIARID STEPPE ; SHORT-TERM ; PLANT ; COLONIZATION ; DIVERSITY ; EVOLUTION ; NITROGEN
收录类别: SCI
项目资助者: National Natural Foundation of China(31500427 ; National Key Research and Development Project of China(2016YFC0501901) ; Province Natural Foundation of Qinghai(2016-ZJ-957Q) ; China Postdoctoral Science Foundation(2015M582735) ; Qinghai innovation platform construction project(2017-ZJ-Y20) ; 31672475 ; 31670433 ; 31572354)
语种: 英语
WOS记录号: WOS:000414085700004
Citation statistics:
内容类型: 期刊论文
URI标识: http://210.75.249.4/handle/363003/10369
Appears in Collections:中国科学院西北高原生物研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Area Qinghai Prov, Xining 810008, Qinghai, Peoples R China
2.Qinghai Normal Univ, Coll Life Sci & Geog, Xining 810008, Qinghai, Peoples R China
3.Lanzhou Univ, Sch Life Sci, MOE Key Lab Cell Act & Stress Adaptat, Lanzhou 730000, Gansu, Peoples R China
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