Title |
Distinct Patterns of Marine Bacterial Communities in the South and North Pacific Oceans |
Author |
Sung-Suk Suh1, Mirye Park1, Jinik Hwang1, Sukchan Lee2, Youngjae Chung3*, and Taek-Kyun Lee1* |
Address |
1South Sea Environment Research Department, Korea Institute of Ocean Science and Technology, Geoje 656-830, Republic of Korea, 2Department of Genetic Engineering Sungkyunkwan University, Suwon 440-746, Republic of Korea, 3Department of Life Science and Biotechnology, Shin Gyeong University, Hwaseong 445-741, Republic of Korea |
Bibliography |
Journal of Microbiology, 52(10),834-841, 2014,
|
DOI |
10.1007/s12275-014-4287-6
|
Key Words |
Operational Taxonomic Units (OTUs), pyrosequencing,
16S rRNA |
Abstract |
The study of oceanic microbial communities is crucial for
our understanding of the role of microbes in terms of biomass,
diversity and ecosystem function. In this study, 16S
rRNA gene tag pyrosequencing was used to investigate
change in bacterial community structure between summer
and winter water masses from Gosung Bay in the South Sea
of Korea and Chuuk in Micronesia, located in the North
and South Pacific Oceans, respectively. Summer and winter
sampling from each water mass revealed highly diverse bacterial
communities, containing ~900 Operational Taxonomic
Units (OTUs). The microbial distribution and highly heterogeneous
composition observed at both sampling sites were
different from those of most macroorganisms. The bacterial
communities in the seawater at both sites were most abundant
in Proteobacteria during the summer in Gosung and
in Bacterioidetes during the winter. The proportion of Cyanobacteria
was higher in summer than in winter in Chuuk
and similar in Gosung. Additionally, the microbial community
during summer in Gosung was significantly different
from other communities observed based on the unweighted
UniFrac distance. These data suggest that in both oceanic
areas sampled, the bacterial communities had distinct distribution
patterns with spatially- and temporally-heterogeneous
distributions. |