11 / 16
Page 28
conferenceseries
.com
Volume 7, Issue 5 (Suppl)
J Biotechnol Biomater
ISSN: 2155-952X JBTBM, an open access journal
Biotechnology 2017
November 13-14, 2017
November 13-14, 2017 Osaka, Japan
19
th
World Congress on
Biotechnology
Characterization of microbial diversity influenced by natural radon source in soil environment
Kyu Yeon Lee and Chang Gyun Kim
Inha University, South Korea
R
adon is an inert gas with no color and odor having a half-life of 4 days, which is a radioactive element produced by the
decay of Uranium. Recently, public interest about indoor radon presence has been increased over decade. In general, high
concentrations radon is generally known to be making deleterious effects on plants, animals and humans, which can cause cell
viability disruption, cell morphological changes or hormonal disorders. On the contrary, lower concentration of radon may
nevertheless improve crop growth while disabling pest activity. This study shows how much of lower level concentrations of
radon in natural soils affect microbial community and their diversity with regard to basal soil physicochemical characteristics.
Microorganisms exposed to low radioactivity, such as low-level radon, can have strong viability and high biodiversity. Soil
physicochemical parameters such as pH, electrical conductivity, moisture content and soil particle size were measured
according to Korean Standard Analytical Methods for Soils. Gas phase of radon concentration was measured for 1 hour (FRD-
400, FT-Radon Lab., Korea) while the concentration of it has been varied in lower, equal and greater level compared to the
natural source of radon origin in the field. In the meantime, colony enumeration, dehydrogenase activity and identification of
species were performed. In the long run, there were relatively greater extent of diversity and population density being observed
when microbes were exposed to relatively lower or equal level compared to the natural origin. In response, they revealed higher
enzymatic activity under the given lower level radon exposure.
Biography
Kyu Yeon Lee has been studying on the neutralization ability of acid soil and the environmental impacts and decomposition mechanisms of micro pollutants such
as medicines and micro-plastics in Soil Groundwater Laboratory of Inha University. Also, investigating on the characteristics of microbial diversity in natural radon
soil environments verifying microbial differences at various radon concentration conditions.
cgk@inha.ac.krKyu Yeon Lee et al., J Biotechnol Biomater 2017, 7:5 (Suppl)
DOI: 10.4172/2155-952X-C1-082