Sensitive Groups of Bacteria Dictate Microbial Functional Responses to Short-term Warming and N Input in a Semiarid Grassland

doi:10.1007/s10021-021-00719-4

	Sensitive Groups of Bacteria Dictate Microbial Functional Responses to Short-term Warming and N Input in a Semiarid Grassland
	Wang, Fuwei 1; Li, Zhen 1; Su, Fanglong 1; Guo, Hui 1; Wang, Peng 1; Guo, Jiuxin 2; Zhu, Weixing 3; Wang, Yi 4; Hu, Shuijin 1,5
刊名	ECOSYSTEMS
	2021-10-22
页码	12
关键词	Bacterial composition grassland loess Plateau microbial physiological properties N input warming
ISSN号	1432-9840
DOI	10.1007/s10021-021-00719-4
通讯作者	Wang, Fuwei(fuwei_wang@hotmail.com) ; Wang, Yi(wangyibill@hotmail.com)
英文摘要	Environmental change factors can significantly affect the composition and physiology of soil microbes. How the resulting changes in the community composition are related to microbial functions, however, remains poorly understood. We investigated the effects of climate warming (+ 1.4 degrees C of air temperature and + 0.75 degrees C of soil temperature at 10 cm depth) and reactive nitrogen (N) input (12 g N m(-2) year(-1)) on the community composition and physiologies of soil bacteria in a semiarid Loess grassland. Soil bacterial communities were assessed by Miseq sequencing of 16S rRNA gene amplicons while their physiological properties were assessed by microbial metabolic quotients (qCO(2), microbial respiration per unit of microbial biomass) and microbial community-level physiological profiles (CLPPs). Our results showed that N input, but not warming, altered bacterial community structure, although both warming and N input significantly affected the abundances of certain phyla. While phyla Verrucomicrobia and Chloroflexi were sensitive to warming, Saccharibacteria, Bacteroidetes and Actinobacteria were primarily responsive to N input. Both warming and N input increased microbial metabolic quotients, but only warming significantly impacted soil microbial CLPPs with L-cysteine, oxalic acid, oxoglutaric acid and aminobutyric acid being the sensitive C sources. Structural equation modeling showed that warming and N input influenced soil bacterial phyla through soil moisture, soil NO3--N and plant biomass. The sensitive bacterial phyla, not the whole community property, were significantly correlated with qCO(2) and microbial C utilization. Our findings suggest that responses of bacterial groups sensitive to environmental change factors, rather than the whole community, may exert dominant effects on soil microbial functions under future climate change scenarios.
资助项目	National Key R&D Program of China[2017YFC0503902] ; National Natural Science Foundation of China[41671269]
WOS关键词	NITROGEN ADDITION ; TEMPERATURE ADAPTATION ; COMMUNITY STRUCTURE ; LOESS PLATEAU ; SOIL ; BIOMASS ; FERTILIZATION ; DEPOSITION ; CARBON ; PRECIPITATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000710075200001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17133]
专题	地球环境研究所_生态环境研究室
通讯作者	Wang, Fuwei; Wang, Yi
作者单位	1.Nanjing Agr Univ, Coll Resources & Environm Sci, Ecosyst Ecol Lab, Nanjing 210095, Peoples R China 2.Fujian Agr & Forestry Univ, Coll Resources & Environm, Int Magnesium Inst, Fuzhou 350002, Peoples R China 3.SUNY Binghamton, Dept Biol Sci, Binghamton, NY 13902 USA 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary, Xian 710061, Peoples R China 5.North Carolina State Univ, Dept Entomol & Plant Pathol, Raleigh, NC 27695 USA
推荐引用方式 GB/T 7714	Wang, Fuwei,Li, Zhen,Su, Fanglong,et al. Sensitive Groups of Bacteria Dictate Microbial Functional Responses to Short-term Warming and N Input in a Semiarid Grassland[J]. ECOSYSTEMS,2021:12.
APA	Wang, Fuwei.,Li, Zhen.,Su, Fanglong.,Guo, Hui.,Wang, Peng.,...&Hu, Shuijin.(2021).Sensitive Groups of Bacteria Dictate Microbial Functional Responses to Short-term Warming and N Input in a Semiarid Grassland.ECOSYSTEMS,12.
MLA	Wang, Fuwei,et al."Sensitive Groups of Bacteria Dictate Microbial Functional Responses to Short-term Warming and N Input in a Semiarid Grassland".ECOSYSTEMS (2021):12.