View : 14 Download: 0

Impact of Asian dust events on airborne bacterial community assessed by molecular analyses

Title
Impact of Asian dust events on airborne bacterial community assessed by molecular analyses
Authors
Jeon E.M.Kim H.J.Jung K.Kim J.H.Kim M.Y.Kim Y.P.Ka J.-O.
Ewha Authors
김용표
SCOPUS Author ID
김용표scopus
Issue Date
2011
Journal Title
Atmospheric Environment
ISSN
1352-2310JCR Link
Citation
vol. 45, no. 25, pp. 4313 - 4321
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Impact of Asian dust events (ADE) on atmospheric bacterial communities was studied using both cultivation and culture-independent methods. In addition, size-segregated aerosol mass concentrations and their chemical compositions were measured and backward trajectory analysis was performed. During the days affected by ADE, culturable bacterial population levels showed significant positive correlations with total suspended particles (TSP) and particulate matter with aerodynamic diameter<10μm (PM10), whereas no significant correlation was found during non-Asian dust (NAD) days. Asian dust seemed to directly impact the airborne bacterial communities, as abrupt changes of denaturing gradient gel electrophoresis (DGGE)-band patterns and significant differences in the 16S rDNA clone library between ADE and NAD days were observed. In addition, the changes of DGGE patterns were in agreement with the shift of PM2.5 chemical composition, suggesting that the outdoor bacterial community was affected by the source and transport pathways of air masses. The isolation sources of clone libraries reflected the sampled air mass transport pathways, which were simulated by backward trajectories. The results of this study revealed that the airborne culturable bacterial concentration was significantly increased and the ambient bacterial community structure was abruptly changed during ADE. © 2010 Elsevier Ltd.
DOI
10.1016/j.atmosenv.2010.11.054
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > 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