The effect of ultralow-dose antibiotics exposure on soil nitrate and N2O   flux

doi:10.1038/srep16818

CORC > 北京大学 > 城市与环境学院

	The effect of ultralow-dose antibiotics exposure on soil nitrate and N2O flux
	DeVries, Stephanie L. ; Loving, Madeline ; Li, Xiqing ; Zhang, Pengfei
刊名	SCIENTIFIC REPORTS
	2015
关键词	SULFONAMIDE ANTIBIOTICS MICROBIAL COMMUNITIES AQUATIC ENVIRONMENT AGRICULTURAL SOILS PIG-MANURE NITROGEN SULFADIAZINE SULFAMETHOXAZOLE PHARMACEUTICALS GROUNDWATER
DOI	10.1038/srep16818
英文摘要	Exposure to sub-inhibitory concentrations of antibiotics has been shown to alter the metabolic activity of micro-organisms, but the impact on soil denitrification and N2O production has rarely been reported. In this study, incubation and column transport experiments were conducted on soils exposed to as many as four antibiotics in the ng.kg(-1) range (several orders of magnitude below typical exposure rates) to evaluate the impact of ultralow dose exposure on net nitrate losses and soil N2O flux over time. Under anaerobic incubation conditions, three antibiotics produced statistically significant dose response curves in which denitrification was stimulated at some doses and inhibited at others. Sulfamethoxazole in particular had a stimulatory effect at ultralow doses, an effect also evidenced by a near 17% increase in nitrate removal during column transport. Narasin also showed evidence of stimulating denitrification in anaerobic soils within 3 days of exposure, which is concurrent to a statistically significant increase in N2O flux measured over moist soils exposed to similar doses. The observation that even ultralow levels of residual antibiotics may significantly alter the biogeochemical cycle of nitrogen in soil raises a number of concerns pertaining to agriculture, management of nitrogen pollution, and climate change, and warrants additional investigations.; Northeast Sustainable Agriculture Research and Education (SARE) program [GNE13-057]; SCI(E); PubMed; ARTICLE; pzhang@ccny.cuny.edu; 16818; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416504]
专题	城市与环境学院
推荐引用方式 GB/T 7714	DeVries, Stephanie L.,Loving, Madeline,Li, Xiqing,et al. The effect of ultralow-dose antibiotics exposure on soil nitrate and N2O flux[J]. SCIENTIFIC REPORTS,2015.
APA	DeVries, Stephanie L.,Loving, Madeline,Li, Xiqing,&Zhang, Pengfei.(2015).The effect of ultralow-dose antibiotics exposure on soil nitrate and N2O flux.SCIENTIFIC REPORTS.
MLA	DeVries, Stephanie L.,et al."The effect of ultralow-dose antibiotics exposure on soil nitrate and N2O flux".SCIENTIFIC REPORTS (2015).