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Distinct temporal dynamics of planktonic archaeal and bacterial assemblages in the bays of the Yellow Sea

Title
Distinct temporal dynamics of planktonic archaeal and bacterial assemblages in the bays of the Yellow Sea
Author
현정호
Issue Date
2019-08
Publisher
PUBLIC LIBRARY SCIENCE
Citation
PLOS ONE, v. 14, No. 8, Article no. e0221408
Abstract
The Yellow Sea features unique characteristics due to strong tides and nutrient-enriched freshwater outflows from China and Korea. The coupling of archaeal and bacterial assemblages associated with environmental factors at two bay areas in the Yellow Sea was investigated. Temporal variations of the archaeal and bacterial assemblages were shown to be greater than the spatial variations based on an analysis of the 16S rRNA gene sequences. Distinct temporal dynamics of both planktonic archaeal and bacterial assemblages was associated with temperature, NO2 -, and chlorophyll a ([chl-a]) concentrations in the bays of the Yellow Sea. The [chl-a] was the prime predictor of bacterial abundance, and some taxa were clearly correlated with [chl-a]. Bacteroidetes and Alpha-proteobacteria dominated at high [chl-a] stations while Gamma-proteobacteria (esp. SAR86 clade) and Actinobacteria (Candidatus Actinomarina clade) were abundant at low [chl-a] stations. The archaeal abundance was comparable with the bacterial abundance in most of the October samples. Codominance of Marine Group II (MGII) and Candidatus Nitrosopumilus suggests that the assimilation of organic nitrogen by MGII could be coupled with nitrification by ammonia-oxidizing archaea. The distinct temporal dynamics of the archaeal and bacterial assemblages might be attributable to the strong tides and the inflow of nutrient-rich freshwater
URI
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0221408http://repository.hanyang.ac.kr/handle/20.500.11754/117777
ISSN
1932-6203
DOI
10.1371/journal.pone.0221408
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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