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Deciphering biodegradable chelant-enhanced phytoremediation through microbes and nitrogen transformation in contaminated soils
Fang, Linchuan1; Wang, Mengke2; Cai, Lin3; Cang, Long4; Cang, L (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China.
SubtypeArticle
2017
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
description.correspondentemailcanglong2016@hotmail.com
Volume24Issue:17Pages:14627-14636
AbstractBiodegradable 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.
KeywordBiodegradable Chelants Phytoremediation Interactions Nitrogen Microbes
Subject AreaEnvironmental Sciences & Ecology
DOI10.1007/s11356-017-9029-y
URL查看原文
Indexed BySCI
Publication PlaceHEIDELBERG
Language英语
WOS IDWOS:000402997700008
PublisherSPRINGER HEIDELBERG
Funding OrganizationNational Natural Science Foundation of China [41571314, 41201226] ; National Natural Science Foundation of China [41571314, 41201226]
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7984
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorCang, L (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China.
Affiliation1.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
Recommended Citation
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.
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