Deciphering biodegradable chelant-enhanced phytoremediation through microbes and nitrogen transformation in contaminated soils

doi:10.1007/s11356-017-9029-y

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	Deciphering biodegradable chelant-enhanced phytoremediation through microbes and nitrogen transformation in contaminated soils
	Fang, Linchuan 1; Wang, Mengke 2; Cai, Lin 3; Cang, Long 4; Cang, L (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China.
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2017
卷号	24 期号:17 页码:14627-14636
关键词	Biodegradable Chelants Phytoremediation Interactions Nitrogen Microbes
ISSN号	0944-1344
DOI	10.1007/s11356-017-9029-y
文献子类	Article
英文摘要	Biodegradable chelant-enhanced phytoremediation offers an alternative treatment technique for metal contaminated soils, but most studies to date have addressed on phytoextraction efficiency rather than comprehensive understanding of the interactions among plant, soil microbes, and biodegradable chelants. In the present study, we investigated the impacts of biodegradable chelants, including nitrilotriacetate, S,S-ethylenediaminedisuccinic acid (EDDS), and citric acid on soil microbes, nitrogen transformation, and metal removal from contaminated soils. The EDDS addition to soil showed the strongest ability to promote the nitrogen cycling in soil, ryegrass tissue, and microbial metabolism in comparison with other chelants. Both bacterial community-level physiological profiles and soil mass specific heat rates demonstrated that soil microbial activity was inhibited after the EDDS application (between day 2 and 10), but this effect completely vanished on day 30, indicating the revitalization of microbial activity and community structure in the soil system. The results of quantitative real-time PCR revealed that the EDDS application stimulated denitrification in soil by increasing nitrite reductase genes, especially nirS. These new findings demonstrated that the nitrogen release capacity of biodegradable chelants plays an important role in accelerating nitrogen transformation, enhancing soil microbial structure and activity, and improving phytoextraction efficiency in contaminated soil.
学科主题	Environmental Sciences & Ecology
URL标识	查看原文
出版地	HEIDELBERG
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000402997700008
资助机构	National Natural Science Foundation of China [41571314, 41201226] ; National Natural Science Foundation of China [41571314, 41201226] ; National Natural Science Foundation of China [41571314, 41201226] ; National Natural Science Foundation of China [41571314, 41201226]
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7984]
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Cang, L (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China 3.Univ Hong Kong, Dept Civil Engn, Environm Biotechnol Lab, Hong Kong, Hong Kong, Peoples R China 4.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Fang, Linchuan,Wang, Mengke,Cai, Lin,et al. Deciphering biodegradable chelant-enhanced phytoremediation through microbes and nitrogen transformation in contaminated soils[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2017,24(17):14627-14636.
APA	Fang, Linchuan,Wang, Mengke,Cai, Lin,Cang, Long,&Cang, L .(2017).Deciphering biodegradable chelant-enhanced phytoremediation through microbes and nitrogen transformation in contaminated soils.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,24(17),14627-14636.
MLA	Fang, Linchuan,et al."Deciphering biodegradable chelant-enhanced phytoremediation through microbes and nitrogen transformation in contaminated soils".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 24.17(2017):14627-14636.