干旱区生态环境知识资源中心(Arid): Response of ammonia-oxidizing Bacteria and Archaea to long-term saline water irrigation in alluvial grey desert soils

Arid

DOI	10.1038/s41598-019-57402-x
	Response of ammonia-oxidizing Bacteria and Archaea to long-term saline water irrigation in alluvial grey desert soils
	Guo, Huijuan 1; Ma, Lijuan 1; Liang, Yongchao 2; Hou, Zhenan 1; Min, Wei 1
通讯作者	Hou, Zhenan ; Min, Wei
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2020
卷号	10 期号:1
英文摘要	Soil nitrification via ammonia oxidation is a key ecosystem process in terrestrial environments, but little is known of how increasing irrigation of farmland soils with saline waters effects these processes. We investigated the effects of long-term irrigation with saline water on the abundances and community structures of ammonia-oxidizing bacteria (AOB) and archaea (AOA). Irrigation with brackish or saline water increased soil salinity (EC1:5) and NH4-N compared to irrigation with freshwater, while NO3-N, potential nitrification rates (PNR) and amoA gene copy numbers of AOA and AOB decreased markedly under irrigation regimes with saline waters. Moreover, irrigation with brackish water lowered AOA/AOB ratios. PNR was positively correlated with AOA and AOB amoA gene copy numbers across treatments. Saline and brackish water irrigation significantly increased the diversity of AOA, as noted by Shannon index values, while saline water irrigation markedly reduced AOB diversity. In addition, irrigation with brackish or fresh waters resulted in higher proportions of unclassified taxa in the AOB communities. However, irrigation with saline water led to higher proportions of unclassified taxa in the AOA communities along with the Candidatus Nitrosocaldus genus, as compared to soils irrigated with freshwater. AOA community structures were closely associated with soil salinity, NO3-N, and pH, while AOB communities were only significantly associated with NO3-N and pH. These results suggest that salinity was the dominant factor affecting the growth of ammonia-oxidizing microorganisms and community structure. These results can provide a scientific basis for further exploring the response mechanism of ammonia-oxidizing microorganisms and their roles in nitrogen transformation in alluvial grey desert soils of arid areas.
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000551462200005
WOS关键词	ENVIRONMENTAL GRADIENTS ; USE EFFICIENCY ; AMOA GENES ; DIVERSITY ; ABUNDANCE ; NITRIFICATION ; OXIDATION ; SEDIMENTS ; NITRIFIERS ; SALT
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319789
作者单位	1.Shihezi Univ, Dept Resources & Environm Sci, Shihezi 832003, Xinjiang, Peoples R China; 2.Zhejiang Univ, Coll Environm & Resource Sci, Key Lab Environm Remediat & Ecol Hlth, Minist Educ, Hangzhou 310058, Peoples R China
推荐引用方式 GB/T 7714	Guo, Huijuan,Ma, Lijuan,Liang, Yongchao,et al. Response of ammonia-oxidizing Bacteria and Archaea to long-term saline water irrigation in alluvial grey desert soils[J],2020,10(1).
APA	Guo, Huijuan,Ma, Lijuan,Liang, Yongchao,Hou, Zhenan,&Min, Wei.(2020).Response of ammonia-oxidizing Bacteria and Archaea to long-term saline water irrigation in alluvial grey desert soils.SCIENTIFIC REPORTS,10(1).
MLA	Guo, Huijuan,et al."Response of ammonia-oxidizing Bacteria and Archaea to long-term saline water irrigation in alluvial grey desert soils".SCIENTIFIC REPORTS 10.1(2020).