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연구성과 > 금주의 우수논문

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SCI Article

Plant extract-mediated green silver nanoparticles: Efficacy as soil conditioner and plant growth pro
성명 김기현()
소속 공과대학 건설환경공학과
캠퍼스
우수선정주 2018년 02월 3째주
Author
Corresponding Author Info Bhattacharya, SS (reprint author), Tezpur Univ, Soil & Agrobioengn Lab, Dept Environm Sci, Tezpur 784028, Assam, India.; Kim, KH (reprint author), Hanyang Univ, Dept Civil & Environm Engn, 222 Wangsimni Ro, Seoul 04763, South Korea.
E-mail 이메일 아이콘kkim61@hanyang.ac.kr
Document Type Article
Source JOURNAL OF HAZARDOUS MATERIALS Volume:346 Issue: Pages:62-72 Published:2018
Times Cited 0
External Information http://dx.doi.org/10.1016/j.jhazmat.2017.12.020
Abstract Recently, concerns have been raised regarding the ultimate fate of silver nanoparticles (SNPs) after their release into the environment. In this study, the environmental feasibility of plant leaf (Thuja occidentalis) extract-mediated green SNPs (GSNPs) was assessed in terms of their effects on soil physicochemical properties and crop growth in comparison to conventionally synthesized silver nanoparticles (CSNPs). Upon application of GSNPs, soil pH shifted toward neutrality, and substantial increments were observed in water holding capacity (WHC), cation exchange capacity (CEC), and NAP availability. The mechanism behind the enhanced availability of N was verified through lab-scale experiments in which GSNP-treated soils efficiently resisted nitrate leaching, thereby sustaining N availability in root zone soil layers. However, retardation in nutrient availability and enzyme activity was apparent in soils treated with 100 mg kg(-1) of either CSNPs or GSNPs. Remarkable improvements in leaf area index (LAI), leaf number, chlorophyll content, nitrate reductase (NR) activity, and Phaseolus vulgaris pod yield were observed after the application of low doses of GSNPs (25-50 mg kg(-1)). The true benefit of GSNP application to soil was substantiated through experiments on plant uptake of nutrients, NR expression, and ferredoxin gene expression in P. vulgaris leaves. (C) 2017 Elsevier B.V. All rights reserved.
Web of Science Categories Engineering, Environmental; Environmental Sciences
Funding National Research Foundation of Korea (NRF) - Ministry of Science, ICT, & Future Planning [2016R1E1A1A01940995]; Department Biotechnology, Govt. of India [BT/473/NE/TBP/2013]; DST-SERB NPDF [PDF/2016/002137]
Language English
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