View : 23 Download: 0

Effects of soil-plant interactive system on response to exposure to ZnO nanoparticles

Title
Effects of soil-plant interactive system on response to exposure to ZnO nanoparticles
Authors
Lee S.Kim S.Lee I.
Ewha Authors
이인숙
SCOPUS Author ID
이인숙scopusscopus
Issue Date
2012
Journal Title
Journal of Microbiology and Biotechnology
ISSN
1017-7825JCR Link
Citation
vol. 22, no. 9, pp. 1264 - 1270
Indexed
SCIE; SCOPUS; KCI WOS scopus
Abstract
The ecotoxicological effects of nanomaterials on animal, plant, and soil microorganisms have been widely investigated; however, the nanotoxic effects of plant-soil interactive systems are still largely unknown. In the present study, the effects of ZnO nanoparticles (NPs) on the soil-plant interactive system were estimated. The growth of plant seedlings in the presence of different concentrations of ZnO NPs within microcosm soil (M) and natural soil (NS) was compared. Changes in dehydrogenase activity (DHA) and soil bacterial community diversity were estimated based on the microcosm with plants (M+P) and microcosm without plants (M-P) in different concentrations of ZnO NPs treatment. The shoot growth of M+P and NS+P was significantly inhibited by 24% and 31.5% relative to the control at a ZnO NPs concentration of 1,000 mg/kg. The DHA levels decreased following increased ZnO NPs concentration. Specifically, these levels were significantly reduced from 100 mg/kg in M-P and only 1,000 mg/kg in M+P. Different clustering groups of M+P and M-P were observed in the principal component analysis (PCA). Therefore, the M-P's soil bacterial population may have more toxic effects at a high dose of ZnO NPs than M+P's. The plant and activation of soil bacteria in the M+P may have a less toxic interactive effect on each of the soil bacterial populations and plant growth by the ZnO NPs attachment or absorption of plant roots surface. The soil-plant interactive system might help decrease the toxic effects of ZnO NPs on the rhizobacteria population. © The Korean Society for Microbiology and Biotechnology.
DOI
10.4014/jmb.1203.03004
Appears in Collections:
자연과학대학 > 생명과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE