Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow

	Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow
	Chu, Houjuan 1; Wang, Shiping 2; Yue, Haowei 1; Lin, Qiaoyan 3; Hu, Yigang 3,4; Li, Xiangzhen 5; Zhou, Jizhong 1,6,7,8; Yang, Yunfeng 1
刊名	microbiologyopen
	2014-10-01
卷号	3 期号:5 页码:585-594
关键词	Alpine grassland GeoChip soil microbial community Tibetan plateau
ISSN号	2045-8827
中文摘要	the grassland and shrubland are two major landscapes of the tibetan alpine meadow, a region very sensitive to the impact of global warming and anthropogenic perturbation. herein, we report a study showing that a majority of differences in soil microbial community functional structures, measured by a functional gene array named geochip 4.0, in two adjacent shrubland and grassland areas, were explainable by environmental properties, suggesting that the harsh environments in the alpine grassland rendered niche adaptation important. furthermore, genes involved in labile carbon degradation were more abundant in the shrubland than those of the grassland but genes involved in recalcitrant carbon degradation were less abundant, which was conducive to long-term carbon storage and sequestration in the shrubland despite low soil organic carbon content. in addition, genes of anerobic nitrogen cycling processes such as denitrification and dissimilatory nitrogen reduction were more abundant, shifting soil nitrogen cycling toward ammonium biosynthesis and consequently leading to higher soil ammonium contents. we also noted higher abundances of stress genes responsive to nitrogen limitation and oxygen limitation, which might be attributed to low total nitrogen and higher water contents in the shrubland. together, these results provide mechanistic knowledge about microbial linkages to soil carbon and nitrogen storage and potential consequences of vegetation shifts in the tibetan alpine meadow.
英文摘要	the grassland and shrubland are two major landscapes of the tibetan alpine meadow, a region very sensitive to the impact of global warming and anthropogenic perturbation. herein, we report a study showing that a majority of differences in soil microbial community functional structures, measured by a functional gene array named geochip 4.0, in two adjacent shrubland and grassland areas, were explainable by environmental properties, suggesting that the harsh environments in the alpine grassland rendered niche adaptation important. furthermore, genes involved in labile carbon degradation were more abundant in the shrubland than those of the grassland but genes involved in recalcitrant carbon degradation were less abundant, which was conducive to long-term carbon storage and sequestration in the shrubland despite low soil organic carbon content. in addition, genes of anerobic nitrogen cycling processes such as denitrification and dissimilatory nitrogen reduction were more abundant, shifting soil nitrogen cycling toward ammonium biosynthesis and consequently leading to higher soil ammonium contents. we also noted higher abundances of stress genes responsive to nitrogen limitation and oxygen limitation, which might be attributed to low total nitrogen and higher water contents in the shrubland. together, these results provide mechanistic knowledge about microbial linkages to soil carbon and nitrogen storage and potential consequences of vegetation shifts in the tibetan alpine meadow.
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	microbiology
研究领域[WOS]	microbiology
关键词[WOS]	agricultural management ; environmental-samples ; organic-carbon ; plateau ; grassland ; nitrogen ; vegetation ; ecosystem ; climate ; denitrification
收录类别	SCI
语种	英语
WOS记录号	WOS:000343761600001
公开日期	2014-12-19
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/4183]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
作者单位	1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Alpine Ecol & Biodivers, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adapt & Evolut Plateau Biota, Xining 810008, Peoples R China 4.Chinese Acad Sci, Cold & Arid Reg & Environm & Engn Res Inst, Shapotou Desert Expt & Res Stn, Lanzhou 730000, Peoples R China 5.Chengdu Inst Biol, Chinese Acad Sci, Chengdu 610041, Peoples R China 6.Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA 7.Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA 8.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA
推荐引用方式 GB/T 7714	Chu, Houjuan,Wang, Shiping,Yue, Haowei,et al. Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow[J]. microbiologyopen,2014,3(5):585-594.
APA	Chu, Houjuan.,Wang, Shiping.,Yue, Haowei.,Lin, Qiaoyan.,Hu, Yigang.,...&Yang, Yunfeng.(2014).Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow.microbiologyopen,3(5),585-594.
MLA	Chu, Houjuan,et al."Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow".microbiologyopen 3.5(2014):585-594.