干旱区生态环境知识资源中心(Arid): Response of bacterial communities and plant-mediated soil processes to nitrogen deposition and precipitation in a desert steppe

Arid

DOI	10.1007/s11104-020-04424-4
	Response of bacterial communities and plant-mediated soil processes to nitrogen deposition and precipitation in a desert steppe
	Wang, Zhen 1,2; Na, Risu 1; Koziol, Liz 3; Schellenberg, Michael P.4; Li, Xiliang 1; Ta, Na 1; Jin, Ke 1; Wang, Hai 1
通讯作者	Jin, Ke ; Wang, Hai
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2020
卷号	448 期号:1-2 页码:277-297
英文摘要	Background and aims Changes in nitrogen (N) and precipitation levels can substantially alter soil properties and plant growth, thereby altering soil microbial diversity and functionality. Method We used manipulated precipitation treatments (50% reduction, control, and plus 50%) and tested two N fertilization levels (control and plus 35 kg N ha(-1) yr(-1)) from a 4-year field experiment to evaluate the effects on soil bacterial diversity, community composition, and N-cycle gene abundance. Results N additions significantly increased ammonia-oxidizing bacterial abundance (via AOB-amoA) but decreased denitrification genes (i.e., nirS and nosZ). Decreased precipitation significantly decreased the abundance of N-cycle genes (AOB-amoA, nirS, and nosZ), while increased precipitation conversely increased the abundance of these same genes. Decreased precipitation led to differences in the microbial community composition that favored drought resistance, indicating that plant-associated microbiomes may be able to modulate plant growth fitness in the context of extreme environmental conditions. N additions substantially altered soil bacterial communities, increasing the relative abundance of certain bacteria and of nitrification-related genes in a manner that depended on precipitation fluctuations. Conclusions Differences in the bacterial community composition and N-cycle genes determined the functional response of a grassland ecosystem to decreased precipitation conditions, and therefore could affect the influence of N deposition on plant growth as well as the physical and chemical properties of the soil.
英文关键词	Plant characteristics Soil properties Bacterial diversity Bacterial community composition Nitrification genes Denitrification genes
类型	Article
语种	英语
国家	Peoples R China ; USA ; Canada
收录类别	SCI-E
WOS记录号	WOS:000508718600001
WOS关键词	AMMONIA-OXIDIZING BACTERIA ; MICROBIAL COMMUNITIES ; FUNGAL COMMUNITIES ; SEVERE DROUGHT ; N CYCLE ; FERTILIZATION ; DIVERSITY ; CARBON ; RESPIRATION ; WATER
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
EI主题词	2020-01-22
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312576
作者单位	1.Chinese Acad Agr Sci, Grassland Res Inst, Hohhot 010010, Peoples R China; 2.Minist Agr, Key Lab Grassland Ecol & Restorat, Hohhot 010010, Peoples R China; 3.Univ Kansas, Dept Ecol & Evolutionary Biol, 35B Takeru Higuchi Hall, Lawrence, KS 66045 USA; 4.Semiarid Prairie Agr Res Ctr, AAFC AAC 1030, Swift Current, SK S9H 3X2, Canada
推荐引用方式 GB/T 7714	Wang, Zhen,Na, Risu,Koziol, Liz,et al. Response of bacterial communities and plant-mediated soil processes to nitrogen deposition and precipitation in a desert steppe[J],2020,448(1-2):277-297.
APA	Wang, Zhen.,Na, Risu.,Koziol, Liz.,Schellenberg, Michael P..,Li, Xiliang.,...&Wang, Hai.(2020).Response of bacterial communities and plant-mediated soil processes to nitrogen deposition and precipitation in a desert steppe.PLANT AND SOIL,448(1-2),277-297.
MLA	Wang, Zhen,et al."Response of bacterial communities and plant-mediated soil processes to nitrogen deposition and precipitation in a desert steppe".PLANT AND SOIL 448.1-2(2020):277-297.