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Cho, Jaeweon
OWIELAB(Organic-Water Interface Engineering Laboratory)
Research Interests
  • Convergence of Science and Arts, Feces Standard Money (FSM), Water & Energy

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Abundance and expression of denitrifying genes (narG, nirS, norB, and nosZ) in sediments of wastewater stabilizing constructed wetlands

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Title
Abundance and expression of denitrifying genes (narG, nirS, norB, and nosZ) in sediments of wastewater stabilizing constructed wetlands
Author
Chon, KyongmiCho, Jaeweon
Issue Date
2015-03
Publisher
Korean Society of Environmental Engineers
Citation
ENVIRONMENTAL ENGINEERING RESEARCH, v.20, no.1, pp.51 - 57
Abstract
As expected, the expression of denitrifying genes in a Typha wetland (relatively stagnant compared to other ponds), showing higher nitrogen removal efficiency in summer, was affected by temperature. The abundance and gene transcripts of nitrate reductase (narG), nitrite reductase (nirS), nitric oxide reductase (norB), and nitrous oxide reductase (nosZ) genes in seasonal sediment samples taken from the Acorus and Typha ponds of free surface flow constructed wetlands were investigated using quantitative polymerase chain reaction (Q-PCR) and quantitative reverse transcription PCR (Q-RT-PCR). Denitrifying gene copy numbers (10(5)-10(8) genes g(-1) sediment) were found to be higher than transcript numbers( 10(3)-10(7) transcripts g(-1) sediment) of the Acorus and Typha ponds, in both seasons. Transcript numbers of the four functional genes were significantly higher for Typha sediments, in the warm than in the cold season, potentially indicating greater bacterial activity, during the relatively warm season than the cold season. In contrast, copy numbers and expression of denitrifying genes of Acorus did not provide a strong correlation between the different seasons.
URI
https://scholarworks.unist.ac.kr/handle/201301/11381
URL
http://ocean.kisti.re.kr/IS_mvpopo001P.do?method=multMain&cn1=JAKO201510665813563&poid=kosenv&free=
DOI
10.4491/eer.2014.069
ISSN
1226-1025
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